Journal articles: 'Wet scrubber'

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Li, Cai Ling, Song Zhou, Dian Tao Liu, Zhi Yu Wang, and Yuan Qing Zhu. "An Analysis on SOx Wet Scrubbers of Marine Diesel Engine." Advanced Materials Research 726-731 (August 2013): 2115–19. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2115.

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With the increasing strictness of emission regulation, the requirements for marine diesel engine SOx emission are becoming more and more rigorous. This paper mainly introduces the reaction mechanisms of seawater scrubber and freshwater scrubber, and analyzes the research status quo of the two scrubbers. It also gives a contrast to the merits and shortcomings of them. Finally, this paper puts forward some considerations in the practical application of seawater scrubber on ships.

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Abdulwahid, Ahmed Adeeb, Rong Situ, and Richard J. Brown. "Underground Diesel Exhaust Wet Scrubbers: Current Status and Future Prospects." Energies 11, no. 11 (November 1, 2018): 3006. http://dx.doi.org/10.3390/en11113006.

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Diesel engines release a range of harmful components into the environment in the form of gases, liquids, and particulate matter (PM). These components have a direct and indirect impact on human health and climate change. Wet scrubbers are used to clean diesel exhaust emissions, by bubbling them through a liquid (usually water) to reduce their temperature and remove some soluble components and particles. Then, these emissions pass through a filter to remove further diesel particulate matter. The PM-capturing mechanism, heat transfer mechanism, and fluid mechanism of a wet scrubber are reviewed. Several parameters have a major influence on wet scrubber performance, such as inlet gas velocity. Modeling of a wet scrubber can be conducted through thermodynamics analysis, heat transfer analysis, and computational simulation. These investigations may lead to optimizing wet scrubber performance, and then to reducing both humidity and temperature at the scrubber exit. This humidity reduction increases filter life and reduces maintenance costs.

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Wu, Qirong, Min Gu, Yungui Du, and Hanxiao Zeng. "Synergistic removal of dust using the wet flue gas desulfurization systems." Royal Society Open Science 6, no. 7 (July 2019): 181696. http://dx.doi.org/10.1098/rsos.181696.

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Coal is still a major energy source, mostly used in power plants. However, the coal combustion emits harmful SO 2 and fly ash. Wet flue gas desulfurization (WFGD) technology is extensively used to control SO 2 emissions in power plants. However, only limited studies have investigated the synergistic dust removal by the WFGD system. Spray scrubbers and sieve-tray spray scrubbers are often used in WFGD systems to improve the SO 2 removal efficiency. In this study, the synergistic dust removal of WFGD systems for a spray scrubber and a sieve-tray spray scrubber was investigated using the experimental and modelling approaches, respectively. For the spray scrubber, the influence of parameters, including dust particle diameters and inlet concentrations of dust particles, and the flow rates of flue gas and slurry of limestone/gypsum on the dust removal efficiency, was investigated. For the sieve-tray spray scrubber, the influence of parameters such as the pore diameter and porosity of sieve trays on the dust removal efficiency was examined. The study found that the dust removal efficiency in the sieve-tray spray scrubber was approximately 1.1–10.6% higher than that of the spray scrubber for the same experimental conditions. Based on the parameters investigated and geometric parameters of a scrubber, a novel droplets swarm model for dust removal efficiency was developed from the single droplet model. The enhanced dust removal efficiency of sieve tray was expressed by introducing a strength coefficient to an inertial collision model. The dust removal efficiency model for the sieve-tray spray scrubber was developed by combining the droplets swarm model for the spray scrubber with the modified inertial collision model for the sieve tray. The results simulated using both models are consistent with the experimental data obtained.

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Selvaraj, J., S. Nitin Kumar, R. Ananda Raj, and B. S. Raj Santhosh. "Automobile Emission Reduction with Wet-Scrubber Technology." Applied Mechanics and Materials 813-814 (November 2015): 805–9. http://dx.doi.org/10.4028/www.scientific.net/amm.813-814.805.

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Increasing automobile emission is becoming a major problem to our environment. The available solutions like catalytic convertors, exhaust gas recirculation are costly and energy intensive. This paper examines the viability of the wet scrubber technology to reduce pollutants in the exhaust gas of the engine. This technology is already being used to reduce pollutants in static applications but not in the automobile sector. It passes the exhaust through a suitable solvent which dissolves some of the pollutants. But the problem in using these scrubbers for automobile emission control is their large size and requirement of external source of energy. In this paper a method to modify the wet scrubber technology to suit the automobile industry has been discussed and its effectiveness has been studied. This paper focuses on proving that the wet scrubber technology can be effectively used for treating automobile exhaust gas. It has been experimentally confirmed that the amount of pollutants in the exhaust could be reduced by 10% by using a wet scrubber.

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Hu, Shengyong, Yang Gao, Guorui Feng, Fei Hu, Changhe Liu, and Jihua Li. "Experimental study of the dust-removal performance of a wet scrubber." International Journal of Coal Science & Technology 8, no. 2 (February 26, 2021): 228–39. http://dx.doi.org/10.1007/s40789-021-00410-y.

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AbstractA variety of dust control methods are often applied in coal mines, among which the application of wet scrubbers has proven to be an efficient technology for the removal of dust in airstreams, rather than diluting or confining the dust. In this paper, a wet scrubber design was developed. Based on a self-designed experimental test platform, the total dust concentration, respirable dust concentration, air volume, and average pressure drops of wet scrubbers with 12, 16, 20, and 24 blades were measured under different water intake conditions. The results show that the different water intake levels have only minimal effects on the air volume of the wet scrubbers. However, increased water intake had improved the dust removal efficiency of the wet scrubbers with the same number of blades. The wet scrubber with 16 blades was found to have the best dust removal efficiency at a water intake level of 1.35 m3/h. Its total dust and respirable dust removal efficiency reached 96.81% and 95.59%, respectively. The air volume was 200.4 m3/min, and the average pressure drop was determined to be 169.4 Pa. In addition, when the wet scrubber with 16 blades was applied in a coal preparation plant in China’s Shanxi Province, it was observed that the total dust concentration had fallen below 8.1 mg/m3, and the respirable dust concentration had fallen below 5.9 mg/m3. Therefore, the results obtained in this research investigation provide important references for the use of wet scrubbers to improve coal production environmental conditions.

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Harry-Ngei, N., I. Ubong, and P. N. Ede. "A Review of the Scrubber as a Tool for the Control of flue Gas Emissions in a Combustion System." European Journal of Engineering Research and Science 4, no. 11 (November 1, 2019): 1–4. http://dx.doi.org/10.24018/ejers.2019.4.11.1561.

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This paper focuses on the description, function and working principles of the wet gas scrubber required to control air pollution emissions from a combustion system of a boiler. Important points to note in the selection and operation of the scrubber as well as the different types of scrubbers commonly deployed in the industries to cut down on emissions were addressed. A comprehensive reviews of the removal mechanisms and schemes of the scrubber were reported for various research on the subject. The packed tower scrubber, however, was recommended because of varying advantages and ease of operations.

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Khairunnissa, Isni Nur, Prima Besty Asthary, Saepulloh Saepulloh, and Rahmaniar Mulyani. "Pemanfaatan Air Limbah Wet Scrubber Flue Gas Desulphurization (FGD) Industri Kertas sebagai Medium Pertumbuhan Spirulina platensis." JURNAL SELULOSA 8, no. 02 (December 31, 2018): 95. http://dx.doi.org/10.25269/jsel.v8i02.239.

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Proses flue gas desulohurization (FGD) dengan wet scrubber adalah suatu proses untuk menurunkan konsentrasi SOx gas buang hasil pembakaran. Proses inidapat mengatasi polusi udara dengan cara menurunkan emisi gas dan partikel debu sehingga menghasilkan gas buangan yang lebih bersih. Air limbah wet scrubber bersifat asam. Salah satu alternatif pemanfaatan air limbah wet scrubber adalah untuk budidaya mikroalga. Spirulina platensis merupakan mikroalga yang berwarna hijau kebiruan yang mempunyai nilai gizi tinggi. Penelitian ini bertujuan untuk mengetahui potensi air limbah wet scrubber sebagai medium pertumbuhan S. platensis dan untuk mengetahui konsentrasi air limbah yang optimum bagi pertumbuhan S. platensis. Metode yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 5 ulangan. Air limbah wet srubber dengan konsentrasi 0%, 25%, 50%, 75%, dan 100% digunakan sebagai medium pertumbuhan S. platensis. Selama kultivasi, dilakukan pengamatan pH, produksi biomassa, dan kandungan fikosianin. Hasil menunjukkan bahwa air limbah wet scrubber dapat dimanfaatkan sebagai medium pertumbuhan S. platensis. Konsentrasi optimum bagi pertumbuhan S. platensis adalah campuran dari 75% air limbah wet scrubber dan 25% medium Zarrouk.Kata kunci : air limbah, flue gas desulphurization, wet scrubber, Spirulina platensis Utilization of Wet Scrubber Wastewater from Flue Gas Desuphurization (FGD) of Paper Industry as a Growth Medium for Spirulina platensisAbstractThe flue gas desulohurization (FGD) withwet scrubber is a process to reduce the concentration of SOx of the flue gas from combustion. This process can resolve the air pollution by reducing gas emission and the dust particles in the liquid droplets to produce cleaner flue gas. The wet scrubber wastewater is acidic. An alternative utilization of wet scrubber wastewater is for cultivation of microalgae. Spirulina platensis is bluish-green microalgae containing high nutritional value. The objective of this research is to determine the potential and the optimum concentration of wastewater from wet scrubber as growth medium of Spirulina. platensis. The research method was observation in the laboratory with a completely randomized design (CRD) with 5 treatments and 5 repetitions. The wastewater from wet scrubber with a concentration of 0 %, 25 %, 50 %, 75 %, and 100 % was used as growth medium of S. platensis. During cultivation, pH, biomass production, and pigment phycocyanin were measured. The results indicated that the wastewater of wet scrubber can be utilized as a growth medium of S. platensis. The optimum concentration for the growth of S. platensis is the mixture of 75% of the wastewater from wet scrubber and 25% of medium Zarrouk.Keywords : wastewater, flue gas desulphurization, wet scrubber, Spirulina platensis

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Biswas, A., B. Rajmohan, C. R. Mohanty, and B. C. Meikap. "Characterization of a High Efficiency Pilot Plant Wet Scrubber with Internals for Fly Ash Removal." Open Chemical Engineering Journal 2, no. 1 (August 26, 2008): 100–105. http://dx.doi.org/10.2174/1874123100802010100.

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Removal of fly ash using wet scrubbers is widely used in the small and medium scale industries. Among the wet scrubbing methods, spray column falls into the simplest type category for its simple construction and various advantages. A novel pilot plant wet scrubber has been conceived, designed and fabricated. This paper distinctly focuses on the detailed design and fabrication of the ejector, which has been used to prepare fly ash-air mixture in the laboratory. A detail experimental investigation has been carried out to characterize the system. Studies indicate very encouraging result. The size analysis of the fly ash sample along with efficiency of fly ash removal in the wet scrubber has critically been examined. It has been found that the present system yielded mentionable high efficiency for the scrubbing of fly ash. In most of the cases, the efficiency lies between 70.% and 90.%. The maximum efficiency obtained is above 90 %.

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de Mello Innocentini, Murilo Daniel, Federico Giovanni Lovero, Ariana Silva Ferreira, Tapas K. Das, and Paolo Tronville. "Environmental and economic issues concerning the use of wet scrubbers coupled to bagasse-fired boilers: a case study in the Brazilian sugarcane industry." Clean Technologies and Environmental Policy 23, no. 8 (June 18, 2021): 2319–35. http://dx.doi.org/10.1007/s10098-021-02139-3.

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Abstract For decades, wet scrubbers have been used to control particulate matter (PM) emitted by bagasse-fired boilers in the sugarcane industry. This choice was justified by their acceptable performance in meeting environmental standards, the abundance of water resources, and the fact that their operation was simpler and less expensive than other dry cleaning operations. However, the progressive tightening of PM emission limits, as well as the need for more rational water and wastewater management in these applications, has changed this aspect of the industry. Despite the extensive technical literature on wet scrubbers, the lack of up-to-date indicators of their performance in sugarcane industries has prevented the optimization of wet scrubbing processes. This paper clearly shows that the use of wet scrubbers can result in significant water and heat losses, as well as high operating costs for wastewater treatment stations (WTSs). Mass and energy balances were determined for a typical ethanol-sugar plant operating in Brazil, which is the world's largest sugarcane producer. The key boiler and scrubber performance indicators were evaluated experimentally over the course of a crop season and were compared to the legal particulate emission and water quality requirements in Brazil. The boiler processed an average of 114.8 t/h of bagasse containing 46.8% moisture and generated 4.75 t of gas and 28.2 kg of PM for each ton of dry burned bagasse. Of the total PM (ash and soot), 68% was collected as dry material in the grate, heat exchangers, and multicyclone; 25% was collected in the wet scrubber; and 7% was emitted to the atmosphere, in compliance with the Brazilian standards. The operation of the WTS linked to the gas cleaning system was inefficient, using 70% of the water to convey the dry PM retained in the boiler, heat exchangers, and multicyclone and only 30% to operate the wet scrubber. Evaporation caused the loss of 10.5% of the scrubbing water to the atmosphere. The transportation of moist cake (7.9 t/h, 78% wb) for disposal in fields resulted in significant fuel costs and water losses. The operation of the WTS accounted for 62% of the total capital expenditure of the cleaning system, while the wet scrubber accounted for only 38%. This work provides updated performance indicators and alternatives for optimizing a gas cleaning system to promote more rational water and wastewater management and savings for the sugarcane sector. Graphic abstract Required collection efficiency for bagasse boilers based on the inlet PM concentration and emission limits imposed in Brazil, China, and most countries

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Rahmawati, Fauziyah, Budi Prasetyo Samadikun, and Mochtar Hadiwidodo. "Performance Evaluation of Cyclone Particulate Controller and Wet Scrubber Unit in Paper Mill 7/8 PT. Pura Nusapersada Kudus." Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan 17, no. 2 (June 14, 2020): 144–53. http://dx.doi.org/10.14710/presipitasi.v17i2.144-153.

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The need is increasing in line with the high market demand for a product. One product that is widely used is paper. One of the recycled paper industries is PT. Pura Nusapersada Unit Paper Mill 7/8, where the production process uses water vapor from a coal-fired boiler. This process can produce ash that can pollute the air so that air pollutant control devices such as cyclones and wet scrubbers are needed. It is necessary to evaluate the efficiency of the cyclone and wet scrubber by knowing the specifications and working principles of the tool, the emissions produced, the effectiveness of the equipment, the factors that influence, problems, operation, and maintenance. The method used is direct observation, interviews, data in the form of documents, references, and routine reports. The cyclone used is a multi-cyclone type, and the wet scrubber is a venturi scrubber type. From the calculations that have been done, the efficiency of the Hitachi Boiler is 94.195%, and the Hamada II Boiler is 96.844%. The boiler produces emissions that meet quality standards for the Minister of Environment Regulation No. 07/2007. The efficiency calculation should be done once a year so that the quality of the equipment is monitored and does not pollute the surrounding air quality.

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Huboyo, Haryono S., and Sudarno Sudarno. "Analysis of Particulates and SO2 Removal from Coal Combustion Emissions Using Cyclone and Wet Scrubber With Textile Wastewater Feed." TEKNIK 41, no. 3 (November 30, 2020): 239–45. http://dx.doi.org/10.14710/teknik.v41i3.33883.

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Reuse of wastewater in the industry is mostly accomplished for watering plants. In a closed cycle, however, industrial wastewater can be returned through treatment to save water usage. This study aims to analyze textile wastewater's ability to be used as scrubbing liquid in the SO2 gas and particulate removal from coal combustion using a packed wet scrubber. Usually, the textile industry uses boiler fueled by coal and discharging base/alkaline wastewater. The method is carried out experimentally using a prototype device using a combination of cyclone and scrubber, with a source of coal combustion gas emissions. We did experiments using textile wastewater four times and two times using clean water as a control. We monitor the SO2, particulate emission in the gas stream, and pH, sulfate levels, and TSS levels in collected wastewater according to SNI. SO2 gas and particulates from coal combustion will be absorbed by the scrubber's wastewater spray so that SO2 will dissolve into sulfate, particulate matter into TSS. The study results using textile wastewater showed the removal efficiency of particulates on cyclone by 34-78%. The removal efficiency of SO2 on wet scrubber was only 24.7%. There was an increase in TSS levels after passing through the scrubber by 46%. The rise in TSS and sulfate concentrations in the wastewater indicates the absorption of SO2 and particulates into wastewater. Based on this result, we can use textile wastewater for controlling the emission of SO2 and particulate from coal combustion by feeding it for the scrubber. However, the efficiency of this process is not optimal.

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Paramitasari, Derina, Erbert Ferdy Destian, and Mochammad Ismail. "Pengaruh Ukuran Partikulat Hasil Gasifikasi Batubara Terhadap Efisiensi Wet Scrubber." Majalah Ilmiah Pengkajian Industri 13, no. 3 (January 1, 2020): 249–56. http://dx.doi.org/10.29122/mipi.v13i3.3610.

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Syngas dari gasifikasi batubara mengandung komponen pengotor seperti tar, char, H2O,Â ash, NH3, H2S dan COS. Zat-zat pengotor tersebut dibagi mejadi dua fase, yaitu fase gas (uap) dan fase padatan (partikulat). Selanjutnya, syngas akan dibersihkan dari pengotornya menggunakan cyclone, wet scrubber dan wet ESP. Dalam penelitian ini, jenis wet scrubber yang digunakan adalah venturi scrubber. Efisiensi dari venturi scubber ini ditentukan oleh ukuran partikulat pengotor dalam syngas. Syngas dari cyclone dianalisa ukuran partikulatnya menggunakan Particle Size Analyzer dan didapatkan grup ukuran partikulat dalam mikrometer (%vol), yaitu 0 â€“ 1 (8,81%), 1 â€“ 2 (12,51%), 2 â€“ 4 (27,33%), 4 â€“ 6 (15,94%), 6 â€“ 8 (10,25%), 8 â€“ 10 (6,7%), 10 â€“ 20 (10,66%), 20 â€“ 40 (4,96%), 40 â€“ 60 (2,6%), dan 60 â€“ 80 (0,17%). Lalu, data tersebut dianalisa dengan debit (flow rate) dan fraksi massa umpan venturi scrubber, maka didapatkan hasil efisiensi venturi scrubber sebesar 97,48%.Syngas from coal gasifiation consist of various impurities such as tar, char, H2O, ash, NH3, H2S and COS. Those impurities can be classified into two phase groups, which are gas phase (includes vapor) and solid phase (particulates). After gasification, syngas will be purified or cleaned from its impurities with some equipments such as cyclone, wet scrubber and wet ESP. The wet scrubber type that is used in this research is venturi scrubber. The scrubber efficiency is determined by the amount of particulate in syngas. Particulate size in syngas from cyclone is analyzed using Particle Size Analyzer, to obtain data of particulate sizes in micrometer (%vol), which are yaitu 0 â€“ 1 (8,81%), 1 â€“ 2 (12,51%), 2 â€“ 4 (27,33%), 4 â€“ 6 (15,94%), 6 â€“ 8 (10,25%), 8 â€“ 10 (6,7%), 10 â€“ 20 (10,66%), 20 â€“ 40 (4,96%), 40 â€“ 60 (2,6%), dan 60 â€“ 80 (0,17%). Then, those data are calculated together with the flow rate and mass fraction of scrubber feed, to get venturi scrubber effficiency 97,48%.

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Claremar, Björn, Karin Haglund, and Anna Rutgersson. "Ship emissions and the use of current air cleaning technology: contributions to air pollution and acidification in the Baltic Sea." Earth System Dynamics 8, no. 4 (October 13, 2017): 901–19. http://dx.doi.org/10.5194/esd-8-901-2017.

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Abstract. The shipping sector is a significant contributor to emissions of air pollutants in marine and coastal regions. In order to achieve sustainable shipping, primarily through new regulations and techniques, greater knowledge of dispersion and deposition of air pollutants is required. Regional model calculations of the dispersion and concentration of sulfur, nitrogen, and particulate matter, as well as deposition of oxidized sulfur and nitrogen from the international maritime sector in the Baltic Sea and the North Sea, have been made for the years 2011 to 2013. The contribution from shipping is highest along shipping lanes and near large ports for concentration and dry deposition. Sulfur is the most important pollutant coupled to shipping. The contribution of both SO2 concentration and dry deposition of sulfur represented up to 80 % of the total in some regions. WHO guidelines for annual concentrations were not trespassed for any analysed pollutant, other than PM2.5 in the Netherlands, Belgium, and central Poland. However, due to the resolution of the numerical model, 50 km × 50 km, there may be higher concentrations locally close to intense shipping lanes. Wet deposition is more spread and less sensitive to model resolution. The contribution of wet deposition of sulfur and nitrogen from shipping was up to 30 % of the total wet deposition. Comparison of simulated to measured concentration at two coastal stations close to shipping lanes showed some underestimations and missed maximums, probably due to resolution of the model and underestimated ship emissions. A change in regulation for maximum sulfur content in maritime fuel, in 2015 from 1 to 0.1 %, decreases the atmospheric sulfur concentration and deposition significantly. However, due to costs related to refining, the cleaning of exhausts through scrubbers has become a possible economic solution. Open-loop scrubbers meet the air quality criteria but their consequences for the marine environment are largely unknown. The resulting potential of future acidification in the Baltic Sea, both from atmospheric deposition and from scrubber water along the shipping lanes, based on different assumptions about sulfur content in fuel, scrubber usage, and increased shipping density has been assessed. The increase in deposition for different shipping and scrubber scenarios differs for the basins in the Baltic Sea, with highest potential of acidification in the southern basins with high traffic. The proportion of ocean-acidifying sulfur from ships increases when taking scrubber water into account and the major reason for increasing acidifying nitrogen from ships is increasing ship traffic. Also, with the implementation of emission control for nitrogen, the effect of scrubbers on acidification is evident. This study also generates a database of shipping and scrubber scenarios for atmospheric deposition and scrubber exhaust from the period 2011 to 2050.

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Volchyn, I. A., and V. A. Raschepkin. "FEATURES OF FLUE GAS CLEANING IN WET SCRUBBERS WITH VENTURI PIPE AT EXCESS SPRAYING." Energy Technologies & Resource Saving, no. 3 (September 14, 2018): 41–50. http://dx.doi.org/10.33070/etars.3.2018.05.

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The radical increase in the density of spraying the flue gas stream in wet Venturi scrubbers allows to significantly increase the efficiency of these dust precipitators to the level of compliance with the European requirements for dust emissions. Such a shift in the operating mode significantly affects the nature of the processes of heat and mass transfer and has feature sthat are important to consider when reconstructing and designing wet gas cleaning plants. The mathematical modeling of the process of flue gas cleaning from fly ash particles in wet Venturi scrubbers in the conditions of excess spraying is performed, the dynamics of the main thermophysical parameters of the heterogeneous flow in a medium with variable moisture content and the influence of the droplet diameter on the efficiency of wet scrubbers are investigated. The problem of changing hydrodynamic resistance of a wet scrubber at different gas flow spraying densities has been studied; the effect of the input fly ash particles distribution on the result of dust cleaning is estimated. Bibl. 26, Fig. 5, Tab. 1.

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Dinh, Thang Xuan, and Trung Thanh Nguyen. "STUDY ON EXPERIMENTAL MODEL TO DETERMINE THE EFFICIENCY OF DUST REMOVAL EQUIPMENT FOR MECHANIC WORKSHOP." Science and Technology Development Journal 13, no. 3 (September 30, 2010): 67–75. http://dx.doi.org/10.32508/stdj.v13i3.2144.

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Finding suitable method for selecting the most suitable dust collector for manufacturers is a very important practise which help to reduce environmental pollution and develop a stable society. Based on available research results, the article studies the efficiency of dust removal technique for medium and small scale workshops on three equipments: wet scrubber, wet packed scrubber and centriscrub to suggest suitable dust treatment process in factories as well as the present need. The research result on three equipments suggest that the wet packed scrubber has a minimum particle removal efficiency of 92,67% while the wet scrubber achieving removal efficiency of 81,85% and the Centriscrub achieving removal efficiency up to 99,50%. The results show that the wet cleaning methods is the most suitable method for safe and efficient collection of dusts from various metal working applications such as deburring, polishing and grinding workshop in which the centriscrub achieves the highest efficiency.

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Корниенко, Виктория Сергеевна, Роман Николаевич Радченко, and Юрий Георгиевич Щербак. "УЛУЧШЕНИЕ ЭКОЛОГИЧЕСКИХ ПОКАЗАТЕЛЕЙ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ ИСПОЛЬЗОВАНИЕМ СКРУББЕРНЫХ ТЕХНОЛОГИЙ И ЭФФЕКТА "МИКРОВЗРЫВОВ" КАПЕЛЬ ВОДОТОПЛИВНОЙ ЭМУЛЬСИИ." Aerospace technic and technology, no. 8 (August 31, 2019): 68–72. http://dx.doi.org/10.32620/aktt.2019.8.10.

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The rules of international organizations in the field of environmental protection are consistently tightening the requirements for the level of harmful emissions into the atmosphere from both stationary and ship power plants (SPP). To ensure this level, it is necessary to use wet scrubber technology and a hybrid system when used simultaneously or sequentially. The study aims to develop a wet scrubber scheme for сomplex exhaust gas cleaning system for an internal combustion engine (ICE). Experimental studies have shown that at the end of the combustion zone of a water-fuel emulsion (WFE) with a water content of 30 % due to the influence of intense turbulence created during microexplosions of WFE droplets in the zone of active combustion in gases, an equimolar NO2 : NO ratio is created automatically (or almost this). It is required to enhance the absorption properties of exhaust gases in front of the scrubber. It is established that when WFE is burnt with water content Wr = 30 %, the content of toxic ingredients in the exhaust gases in front of the scrubber will be at a much lower level compared to the cleaning system at Wr = 2 %. A scheme of a wet scrubber has been developed, which allows to clean exhaust gases from three toxic exhaust gas ingredients simultaneously with heating water to exhaust gas boiler and drying wet gases after a wet scrubber due to the heat of the intermediate coolant. It has been established that the heat of this intermediate coolant is sufficient not only to heat the feed water of the exhaust gas boiler, but also to provide a hot water supply system for the ship, since in the scrubber, as a result of exhaust water vapor condensation up to 8 % of the lower combustion heat of the fuel burned power units. Analysis of the calculated studies showed that the using of a wet scrubber reduces the NOx content from 258 ppm to 52 ppm, SO2 - from 107 ppm to 22 ppm, CO2 - from 3.1 % to 0.93 %. The developed wet scrubber scheme can be used to clean the exhaust gases of internal combustion engines from toxic ingredients and to provide the necessary level of exhaust gas purification recommended by the IMO (International Maritime Organization).

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Vlasák, Jaroslav, Tomáš Svěrák, Lukáš Dreveny, and Josef Kalivoda. "Air Purification from CO₂ Gas Using a Scrubber and Suggestions to Reach a Better Efficiency." Materials Science Forum 955 (May 2019): 1–6. http://dx.doi.org/10.4028/www.scientific.net/msf.955.1.

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This thesis deals with the testing of our wet scrubber by a laboratory at the Faculty of Chemistry, Brno University of Technology. On this wet scrubber, the CO2 capture efficiency is tested with a splash liquid consisting of 1 % NaOH. An overview of the system, which could increase the capture efficiency of CO2 from the gas mixture or other harmful particulates in the air, could be improved after introduction. The thesis also deals with finding methods to better capture efficiency of solid particles and gases on the wet scrubber.

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Sari, Ikha Rasti Julia, Januar Arif Fatkhurrahman, Bekti Marlena, Nani Harihastuti, Farida Crisnaningtyas, Yose Andriani, and Nasuka Nasuka. "WET SCRUBBER PERFORMANCE OPTIMIZATION APPLICATION ASSISTED WITH ELECTROCHEMICAL-BASED AMMONIA SENSORS." Jurnal Riset Teknologi Pencegahan Pencemaran Industri 10, no. 2 (December 15, 2019): 36–42. http://dx.doi.org/10.21771/jrtppi.2019.v10.no2.p36-42.

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Crumb rubber is one of Indonesia’s agroindustry export commodities. This industry faces environmental problems due to their wastes, both liquid and air. The source of air pollution is commonly from drying process that emitted odor from its evaporation and heating phenomena. Industry uses wet scrubber technology as air pollution control from emitted odor from drying process. Preliminary identification in noncontrolled wet scrubber shown that wet scrubber efficiency around 47%. Low efficiency wet scrubbing process causes rain drop of water vapor around drying process. This research used electrochemical based sensor MICS 5524 as ammonia monitoring instrument, assisted with arduino as microcontroller to regulate water discharge through valve controlling scrubbing process. This electrochemical based sensor reads ammonia based on voltage reads by Arduino microcontroller. Ammonia reading then control scrubbing process by adjusting valve opening for spray water distribution. Wet scrubber efficiency increases to 66,96% due to water scrubbing control, also can save water utilization as high as 61,90%, followed by absence of rain drop contains ammonia around drying process area.

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Rizkiana, Meisa Legi, Saepulloh Saepulloh, Prima Besty Asthary, and Rahmaniar Mulyani. "Pengaruh Komposisi Air Limbah Industri Kertas sebagai Media Pertumbuhan dan Fotoperiode Terhadap Kultur Spirulina platensis." JURNAL SELULOSA 9, no. 01 (June 30, 2019): 9. http://dx.doi.org/10.25269/jsel.v9i01.268.

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Industri kertas menghasilkan air limbah dari kegiatan produksi dan proses flue gas desulphurization (air limbah wet scrubber). Senyawa nutrisi (senyawa karbon, nitrogen, dan fosfat) yang masih terdapat dalam air limbah terolah dan air limbah wet scrubber belum dimanfaatkan secara optimal dan berpotensi sebagai media pertumbuhan Spirulina platensis. Penelitian dengan variasi komposisi air limbah dan fotoperiode (24 jam terang dan 12 jam terang/12 jam gelap) telah dilakukan dalam skala laboratorium selama 9 hari. Pengukuran pH media, pertumbuhan S. platensis (konsentrasi biomassa, laju pertumbuhan spesifik, dan waktu penggandaan), dan kandungan fikosianin dilakukan setiap hari untuk melihat pengaruh komposisi media dan perlakuan fotoperiode terhadap pertumbuhan S. platensis. Hasil menunjukkan bahwa S. platensis dapat tumbuh dengan baik pada semua komposisi air limbah terolah dan air limbah wet scrubber yang diujicobakan. Konsentrasi biomassa tertinggi sebesar 831 mg/L dan laju pertumbuhan spesifik tertinggi sebesar 0,52 hari-1 dengan waktu penggandaan 0,4 hari diperoleh dari perlakuan fotoperiode 24 jam terang. Komposisi air limbah terolah dan air limbah wet scrubber tidak memberikan pengaruh yang nyata terhadap konsentrasi biomassa, tetapi perbedaan fotoperiode sangat berpengaruh terhadap konsentrasi biomassa sehingga dalam aplikasi skala lapangan perlu mempertimbangkan sistem pencahayaan untuk pertumbuhan S. platensis yang optimal.Kata kunci: Spirulina platensis, media pertumbuhan, fotoperiode, air limbah terolah, air limbah wet scrubberThe Effect of Composition of Paper Industry Wastewater as A Growth Medium and Photoperiod on The Culture of Spirulina platensisAbstractThe paper industry produces wastewater from its production activities and the flue gas desulphurization process (wet scrubber wastewater). Nutritional compounds (carbon, nitrogen and phosphate compounds) which are still in treated wastewater and wet scrubber wastewater have not been utilized optimally and have potential as growth media of Spirulina platensis. Research on wastewater compositions and photoperiod variations (24 hours light and 12 hours light/12 hours dark) was carried out on a laboratory scale for 9 days. Measurements of medium pH, growth of S. platensis (biomass concentration, specific growth rate, and doubling time), and phycocyanin content were carried out every day to study the effect of wastewater composition and photoperiod treatment on the growth of S. platensis. The results showed that S. platensis can grow well on all compositions of treated wastewater and wet scrubber wastewater. The highest biomass concentration of 831 mg/L and the highest specific growth rate of 0.52 days-1 with a doubling time of 0,4 days is obtained from 24-hour light photoperiod treatment. The composition of treated wastewater and wet scrubber wastewater has no significant effect on the biomass concentration but the photoperiod differences greatly influence the biomass concentration so that in the field scale application it is necessary to consider the lighting system for optimal S. platensis growth. Keywords: Spirulina platensis, growth medium, photoperiod, treated wastewater, wet scrubber wastewater

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Perevezentsev, A. N., A. C. Bell, B. M. Andreev, M. B. Rozenkevich, Yu S. Pak, and A. V. Ovcharov. "Wet Scrubber Column for Air Detritiation." Fusion Science and Technology 56, no. 4 (November 2009): 1455–61. http://dx.doi.org/10.13182/fst56-1455.

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Jugănaru, Daniela-Elena, Mariana Panaitescu, and Liviu-Constantin Stan. "COMPARATIVE CFD BASED PARAMETRIC ANALYSIS OF GAS FLOW IN TWO CONTER-FLOW WET SCRUBBER SYSTEMS." Journal of marine Technology and Environment 1, no. 2021 (2021): 28–32. http://dx.doi.org/10.53464/jmte.01.2021.04.

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" In this study, gas flow field were simulated using ANSYS 2020R2, Fluid Flow Fluent computational fluids dynamic (CFD) software based on the continuity, velocity, temperature, energy and k -  turbulence. The overall objective of the study is to compare the pressure and velocity maps inside the wet scrubber system for two different scrubber designs. I have choose to analyse an In-Line scrubber bottom inlet, type I, and In-Line scrubber side inlet, type L. Bottom entry or side entry designs to allow a direct up-flow configuration and simplify engine exhaust gas duct routing for any type of vessel. The flow in a wet scrubber is very complex due to the interaction between dust particles, water droplets, and bulk water and flue gas. The flue gas flow is turbulent and there are multiple phases (gas, liquid and solid). CFD codes that predict gas flow patterns are based on conservation equations for mass, momentum and energy. The results show that the residuals have a very good job of converging at minimum flow contours and vectors at the inlet across the scrubbing chamber and outlet shows a distributed flow. The velocity profiles have fully conformed to the recommended profile for turbulent flow in pipes. As can be seen in the figures above, the velocity flow contour inside the scrubber is higher in the scrubber side inlet. Even though I choose to study the simplified scrubber model without taking into account that spray nozzle improve mixing between the scrubbing liquid and waste gas; from the results obtained, it can be deduced that the numerical simulation using CFD is an effective method to study the flow characteristics of a counter-flow wet scrubber system. "

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Gabriel, D., and M. A. Deshusses. "Technical and economical analysis of the conversion of a full-scale scrubber to a biotrickling filter for odor control." Water Science and Technology 50, no. 4 (August 1, 2004): 309–18. http://dx.doi.org/10.2166/wst.2004.0292.

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The present paper evaluates the technical and economical feasibility of converting wet chemical scrubbers to biotrickling filters for H2S control at the Orange County Sanitation District (OCSD), California. Results of 8 months of continuous operation of a biotrickling filter treating 16,000 m3 h-1 of foul air are analyzed. The reactor was operated at a gas contact time of 1.6 to 2.2 seconds reaching H2S elimination capacities up to 105-110 g H2S m-3 h-1, consistently maintaining outlet concentrations well below the regulatory limits (24 h average of 1 ppmv) and demonstrating to be very robust against temporary changes. Also, a cost-benefit analysis of the conversion was performed. Savings from chemicals, energy and water usage compared to a chemical scrubber operated in parallel to the biotrickling filter throughout the project indicated that the payback time of the conversion was about 1.3 years. Cost savings ranged between US$ 40,000 per year, per scrubber. While the above number may be specific to OCSD conditions, the cost analysis suggests that there is a significant benefit of converting chemical scrubbers to biotrickling filters over a wide range of operating conditions.

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Jayadi, Hurip, Frida Hendrarinata, Beny Suyanto, and Sunaryo Sunaryo. "Chimney Filter Model Wet Scrubber to Reduce Air Pollutant Emissions on the Incinerator." Health Notions 5, no. 2 (February 28, 2021): 41–45. http://dx.doi.org/10.33846/hn50201.

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In general, inpatient health care facilities produce infectious and non-infectious waste 0.3 mᶟ / day. Non-infectious waste that is burned in an incinerator without a chimney filter, can cause particles, CO, SO2, NOx (air pollutants) and cause environmental pollution. This study aims to make a chimney filter design with a Scrubber model on an incinerator at the Public Health Center, Maospati District, Magetan Regency to reduce the amount of air pollutants emitted. This type of research is experimental research. This research designed a particle trapping device, gas by spraying water into the scrubber. The independent variable of this research was the variation of the water flow sprayed in the scrubber (3.2 liters / minute, 4 liters / minute, 5.6 liters / minute). The dependent variables of this study were particles, SO2, NOx, CO. Data collection using a digital gas detector method in the form of a UV spectrophotometer. Data were analyzed descriptively, in the form of frequency distribution, and percentage, presentation of data in a table based on air emission quality standards from thermal waste processing. The results illustrate that the use of a chimney scrubber filter with water spraying 3.2 liters / minute, 4 liters / minute, 5.6 liters / minute can reduce air pollutants, emission of SO2, CO to below the air quality standard. In addition, this tool can also reduce NOx gas and particles, but not yet below the quality standard. The conclusion from the results of this study is particulate emission air pollutants, gas SO2, CO, NOx. the incinerator can be lowered by modifying variations by spraying water 3.2 liters / minute, 4 liters / minute, 5.6 liters / minute on the chimney scrubber filter on the incinerator. Keywords: incinerator; scrubber; water discharge variations; particle; gas

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Achiles, Ana, and Vádila Guerra. "Performance of a cyclone scrubber on removal of fine particulate matter." Chemical Industry and Chemical Engineering Quarterly 26, no. 1 (2020): 31–40. http://dx.doi.org/10.2298/ciceq181220022a.

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Cyclones are not classified as effective devices for removing fine particles, while high efficiency wet scrubbers usually have high operational costs. In order to achieve better performance, the aim of this study is to evaluate, for the first time, a cyclone scrubber design based on the dimensions of a Stairmand cyclone separator with the inclusion of liquid injection nozzles located in different positions to improve the separation of fine particles. Given the lack of studies considering the effect of liquid injection and other operational conditions in the removal performance of a cyclone scrubber with Stairmand dimensions, the present paper provides a complete evaluation of these effects for the separation of sugar cane bagasse ash from air. The parameters investigated were inlet gas velocity, liquid injection position, liquid-to-gas flow ratio and droplet size distribution. The cyclone scrubber performance was evaluated considering collection efficiency and pressure drop. Overall efficiency of almost 99% and low-pressure drop was achieved by employing a liquid-to-gas flow ratio of 0.43 L/m? for the collection of ash from the combustion of sugar cane bagasse. Grade efficiencies revealed that injecting droplets into cyclones significantly improved the removal of fine particles with an aerodynamic diameter less than 2.5 ?m.

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Li, Xiaochuan, Tao Wei, Xinhao Xu, Reyna M. Knight, and Jiahang Li. "Study of the pressure drop in dust scrubber affected by liquid flowability." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 233, no. 5 (March 13, 2019): 1066–73. http://dx.doi.org/10.1177/0954408919836361.

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The complexity of the gas-liquid two-phase flow results in equally complicated pressure drop characteristics for self-excited wet dust scrubbers. In this paper, the pressure drop of the dust scrubber was studied by measuring the total pressure drop R and the differential liquid level Δ H versus the gas velocity v at different initial liquid level b0 values, combined with the liquid flowability. The results showed that the dust scrubber varied its total drag coefficient by changing the differential liquid level Δ H of the liquid-phase and then adjusting the gas-liquid two-phase force balance ahead of and behind the choke. Under the influence of liquid flowability, the throttling strength α exhibited a linear relationship with the gas velocity of the dust scrubber when b0 ≤ 0 mm. The Δ H-v and R- v characteristics of the dust scrubber varied with different values of b0 and v. When b0 > 0, the Δ H-v curve and R- v curve exhibited an explicit quadratic curve relationship. When b0 ≤ 0 mm, the Δ H-v curve and R- v curve exhibited an explicit linear relationship, where the Δ H-v curves can be expressed by a linear equation Δ H = khv+Δ H0, and the gas-phase pressure drop R can be approximately calculated using the differential liquid level Δ H. The liquid flowability can change the choke-sectional to change the total drag coefficient, which reduced in multiple folds with an increase in the gas velocity.

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Siregar, Kiman, Rizal Alamsyah, Ichwana Ichwana, Sholihati Sholihati, and Saminuddin B. Tou. "The Design of Power Plant Biomass in Isolated Are From National Electricty Company in Indonesia With Aplication of Tar Wet Scrubber and Filter Gas." Rona Teknik Pertanian 10, no. 2 (October 1, 2017): 64–77. http://dx.doi.org/10.17969/rtp.v10i2.10007.

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Abstrak. Mesin gasifikasi bertujuan untuk menghasilkan gas mampu bakar (CO, H2, CH4). Gas mampu bakar yang dihasilkan dapat digunakan untuk menggantikan fossil fuel untuk menjalankan gas engine. Namun gas mampu bakar yang dihasilkan tersebut mengandung tar (kotoran) yang masih tinggi, sehingga terjadi pengotoran filter engine dan mengakibatkan mesin tidak dapat dioperasikan dalam waktu yang cukup lama. Penelitian ini bertujuan untuk mendisain Mesin Pembangkit Listrik Tenaga Biomassa (PLTBm) pada daerah terisolasi dari jaringan listrik PT.PLN (Persero) di Indonesia melalui aplikasi tar wet scrubber dan gas filter. Mesin gasifier yang dirancang berupa tipe downdraft dengan kapasitas terpasang 25 kW. Tambahan komponen rangkaian PLTBm yang dirancang adalah tar wet scrubber, gas filter dan gas engine. Secara keseluruhan mesin PLTBm yang dirancang terdiri dari : (1)Tangki pengisian biomassa, (2)Tangki biomassa, (3)Reaktor tipe downdraft, (4)Cyclon, (5)Tar wet schrubber, (6)Water tank, (7)Gas filter, (8)Blower, (9)Gas engine kapasitas 25 kW, (10)Air inlet nozzle, (11)Connection pipe, (12)Termometer indicator, (13)Exhaust gas, (14)Pressure indicator. Pengurangan nilai tar selain menggunakan karbon aktif, juga menggunakan sistem perangkap kotoran gas (wet scrubber). Gasifier yang digunakan pada penelitian ini memiliki diameter reaktor 900 mm dan tinggi 1000 mm. Cyclon memiliki diameter 580 mm dengan tinggi 1766 mm. Gas filter memiliki panjang 700 mm, tinggi 700 mm dan lebar 700 mm. Tar wet scrubber terdiri dari 5 tabung (diameter tabung 300 mm) yang terangkai satu dengan yang lainnya dengan tujuan untuk menangkap tar yang masih terkandung dalam gas mampu bakar yang dihasilkan dari reaktor gasifikasi dengan dimensi total yaitu lebar 1750 mm dan tinggi 1300 mm.

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Vaaraslahti, Kati, Ari Laitinen, and Jorma Keskinen. "Spray Charging of Droplets in a Wet Scrubber." Journal of the Air & Waste Management Association 52, no. 2 (February 2002): 175–80. http://dx.doi.org/10.1080/10473289.2002.10470776.

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Krames, Jörg, and Helmut Büttner. "The cyclone scrubber - a high efficiency wet separator." Chemical Engineering & Technology 17, no. 2 (April 1994): 73–80. http://dx.doi.org/10.1002/ceat.270170202.

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Kim, Jae-Gang, Ju-Yeol Lee, Byung Hyun Park, and Jin-Sik Choi. "The Simultaneous removal of NOx using Wet Scrubber." Journal of the Korean Oil Chemists' Society 32, no. 2 (June 30, 2015): 296–301. http://dx.doi.org/10.12925/jkocs.2015.32.2.296.

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Busigin, Anthony. "Rigorous Tritium Wet Scrubber Column Modeling and Design." Fusion Science and Technology 76, no. 3 (January 28, 2020): 252–56. http://dx.doi.org/10.1080/15361055.2019.1705747.

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Perevezentsev, A. N., B. M. Andreev, M. B. Rozenkevich, Yu S. Pak, A. V. Ovcharov, and S. A. Marunich. "Wet scrubber technology for tritium confinement at ITER." Fusion Engineering and Design 85, no. 7-9 (December 2010): 1206–10. http://dx.doi.org/10.1016/j.fusengdes.2010.03.005.

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32

Saisinchai, Somsak. "Glass Sand Processing Techniques in the Rayong Area, Thailand." Advanced Materials Research 858 (November 2013): 254–64. http://dx.doi.org/10.4028/www.scientific.net/amr.858.254.

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This article discusses the beneficiation of glass sand at Rayong province in the eastern part of Thailand . The process consists of revolving screen, hydrocyclone, attrition scrubber, tank classifier, spiral concentrator, wet high intensity magnetic separator and closed loop water recycling system. There are 13 glass sand processing plants in this area with the overall capacity 2 million tons per year and supply glass sand to float glass and flat glass industry, glassware industry, glass packaging industry, ceramic industry and chemical industry in Thailand. Keywords: Glass sand, Revolving screen, Hydrocyclon, Attrition scrubber, Tank classifier, Spiral concentrator, Wet high intensity magnetic separator, Closed loop water recycling system.

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Su, Lipeng, Yu Zhang, Qian Du, Xianchao Dai, Jianmin Gao, Peng Dong, and Hui Wang. "An experimental study on the removal of submicron fly ash and black carbon in a gravitational wet scrubber with electrostatic enhancement." RSC Advances 10, no. 10 (2020): 5905–12. http://dx.doi.org/10.1039/c9ra10046f.

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Mohd Yusoff, Mohd Hizami, Ein K. Nyunt, Muhammad Roil Bilad, Nasrul Arahman, Sri Mulyati, Samsul Rizal, Nik Abdul Hadi Nordin, Jia Jia Leam, Asim Laeeq Khan, and Juhana Jaafar. "Hybrid Membrane Distillation and Wet Scrubber for Simultaneous Recovery of Heat and Water from Flue Gas." Entropy 22, no. 2 (February 4, 2020): 178. http://dx.doi.org/10.3390/e22020178.

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Flue gas contains high amount of low-grade heat and water vapor that are attractive for recovery. This study assesses performance of a hybrid of water scrubber and membrane distillation (MD) to recover both heat and water from a simulated flue gas. The former help to condense the water vapor to form a hot liquid flow which later used as the feed for the MD unit. The system simultaneously recovers water and heat through the MD permeate. Results show that the system performance is dictated by the MD performance since most heat and water can be recovered by the scrubber unit. The scrubber achieved nearly complete water and heat recovery because the flue gas flows were supersaturated with steam condensed in the water scrubber unit. The recovered water and heat in the scrubber contains in the hot liquid used as the feed for the MD unit. The MD performance is affected by both the temperature and the flow rate of the flue gas. The MD fluxes increases at higher flue gas temperatures and higher flow rates because of higher enthalpy of the flue gas inputs. The maximum obtained water and heat fluxes of 12 kg m−2 h−1 and 2505 kJm−2 h−1 respectively, obtained at flue gas temperature of 99 °C and at flow rate of 5.56 L min−1. The MD flux was also found stable over the testing period at this optimum condition. Further study on assessing a more realistic flue gas composition is required to capture complexity of the process, particularly to address the impacts of particulates and acid gases.

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Hite, Diane, D. Lynn Forster, and Jon Rausch. "Optimal Use of Smokestack Scrubber By-Product." Journal of Agricultural and Applied Economics 31, no. 1 (April 1999): 123–32. http://dx.doi.org/10.1017/s008130520002882x.

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AbstractFederal legislation mandates substantial reduction of air pollution emissions from electric utilities. Utilities in Appalachia that use locally mined high-sulfur coal must choose among abatement options such as fuel mixing and smokestack scrubbing technologies. Wet scrubbers are the most frequently adopted abatement technology in Ohio. This paper investigates beneficial reuses of by-product from wet scrubbers. By-product is most often disposed of in landfills, resulting in large external costs. We combine social cost and benefit transfers with a linear optimization model to investigate potential benefits of by-product recycling. Results suggest that significant incentives exist to find beneficial uses for by-product.

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Dong, Zhi Feng, Quan Jin Kuang, Yong Zheng Gu, Rong Yao, and Hong Wei Wang. "Two-Phase Flow Field Numerical Simulation in Scrubber for Exhaust Gas Desulfurization." Applied Mechanics and Materials 541-542 (March 2014): 1288–91. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.1288.

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Calculation fluid dynamics software Fluent was used to conduct three-dimensional numerical simulation on gas-liquid two-phase flow field in a wet flue gas desulfurization scrubber. The k-ε model and SIMPLE computing were adopted in the analysis. The numerical simulation results show that the different gas entrance angles lead to internal changes of gas-liquid two-phase flow field, which provides references for reasonable parameter design of entrance angle in the scrubber.

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Pratiwi, Indah. "R RANCANG BANGUN ALAT GASIFIKASI BIOMASSA (KAYU KARET) SISTEM UPDRAFT SINGLE GAS OUTLET." Jurnal Teknik Patra Akademika 11, no. 01 (September 29, 2020): 38–48. http://dx.doi.org/10.52506/jtpa.v11i01.104.

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Pemanfaatan limbah biomassa sebagai sumber energi alternatif diperlukan saat ini melihat penggunaan bahan bakar fosil meingkat seriing berkembangnya teknlogi. Langkah yang harus dilakukan ialah mencari bahan bakar alternatif melalui proses gasifikasi. Gasifikasi adalah salah satu solusi energi alternatif yang mengkonversi bahan padat dalam hal ini berupa biomassa menjadi gas yang mudah terbakar. Gas- gas yang dihasilkan antara lain CO, H2, dan CH4. Biomassa yang dimanfaatkan dalam penelitian ini adalah kayu karet yang sudah tua dan tidak mampu berproduksi lagi. Pada proses gasifikasi, syngas yang dihasilkan masih terdapat pengotor seperti abu dan tar. Penelitian ini akan menguji pengaruh variasi laju alir air pada venturi wet scrubber yang digunakan untuk membersihkan syngas dari tar. Laju alir divariasikan sebesar 0,015 m3/min, 0,02 m3/min dan 0,025 m3/min. Dari hasil pengujian didapatkan berat tar yang tertangkap secara berturut, yaitu: 0,67 g, 0,97 g dan 1,7 g dengan tingkat efisiensi wet scrubber 70%. Disamping itu syngas yang melewati venturi wet scrubber juga mengalami perubahan komposisi syngas terdiri dari CO 10,15%, H2 3,74% serta CH4 2,62% dan berubah menjadi CO 9,05%, H2 3,43% dan CH4 4,11%. Dengan adanya perubahan komposisi syngas ini, maka terjadi peningkatan pada nilai LHV syngas yaitu 2,625 MJ/m3 meningkat menjadi 2,987 MJ/m3.

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Jeong, Woong Gie,, and Yong Ki, Choi. "Wet Scrubber Systems – Each Operating Modes and Main Features." Marine Engineering 53, no. 1 (2018): 29–32. http://dx.doi.org/10.5988/jime.53.29.

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Almuhanna, Emad A. "Enhancing the Cooling Effect of an Electrostatic Wet Scrubber." IOSR Journal of Environmental Science, Toxicology and Food Technology 10, no. 09 (September 2016): 65–72. http://dx.doi.org/10.9790/2402-1009016572.

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Vaaraslahti, K., and A. Laitinen. "Natural charging of droplets during spraying in wet scrubber." Journal of Aerosol Science 30 (September 1999): S693—S694. http://dx.doi.org/10.1016/s0021-8502(99)80357-7.

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Di Natale, F., L. Manna, F. La Motta, R. Colicchio, E. Scaglione, C. Pagliuca, and P. Salvatore. "Capture of bacterial bioaerosol with a wet electrostatic scrubber." Journal of Electrostatics 93 (June 2018): 58–68. http://dx.doi.org/10.1016/j.elstat.2018.04.003.

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Kencanawati, Martheana. "Studi Kemampuan Spray Tower untuk Penyisihan Polutan Gas dari Pembakaran Bahan Bakar Industri." Buletin Profesi Insinyur 2, no. 1 (July 20, 2019): 16–19. http://dx.doi.org/10.20527/bpi.v2i1.41.

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Sebagian sumber pencemaran sulfur dioksida adalah dari aktivitas manusia seperti gas buangan pabrik maupun kendaraan bermotor. Oleh karena itu, pencegahannya dapat dilakukan oleh manusia sendiri dengan berbagai usaha. Paper ini membahas mengenai upaya pencegahan polusi dari sulfur dioksida dengan menggunakan wet scrubber. Wet scrubber didesain dengan menggunakan mist eliminator tanpa media dan menggunakan air. Variabel dalam penelitian ini adalah debit air, ketinggian sprayer dan susun vertikal sprayer. Gas dianalisis dengan menggunakan metode konduktivitimetri manual. Pengukuran dengan metode ini dapat diaplikasikan pada yang memiliki range ≥0.05 ppm. Hasil yang diperoleh dari penelitian adalah persentase penyisihan untuk satu tingkat sprayer dengan debit terbesar 0,14 Liter/s adalah 74.15%. Satu tingkat sprayer menggunakan ketinggian kolom pada sprayer berjarak 110 cm. Sedangkan untuk dua tingkat prayer dengan ketinggian kolom 110 cm dan 41 cm menghasilkan penyisihan sebesar 97.74%.

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Arsenijevic, Zorana, Zeljko Grbavcic, Bosko Grbic, Nenad Radic, Radmila Garic-Grulovic, and Mihal Djuris. "Removal of ethylene oxide from waste gases by absorption." Chemical Industry 65, no. 4 (2011): 389–95. http://dx.doi.org/10.2298/hemind110329026a.

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Ethylene oxide (EtO) is an organic compound, which is used as starting material in the production of polymers and as sterilizing agent for thermolabile materials. Although ethylene oxide is not common as an organic pollutant, its removal from numerous emission sources (e.g. ethylene oxide production plants or food and pharmaceutical sterilizing units) is of the crucial importance because of its mutagenic, teratogenic and cancerogenic effect on human health. The objective of this paper is the experimental investigation of ethylene oxide (EtO) absorption in diluted aqueous solution of sulfuric acid in order to evaluate the applicability of this procedure as well as to obtain project parameters for industrial plant realization. It was found that absorption is suitable as the fist step in the purification treatment of high EtO concentrations in the emission gases. According to the literature data, the basic parameter that defines the scrubber efficiency is the contact time, i.e. the ratio of packing height in scrubber and velocity of gas mixture. To investigate the characteristics of wet treatment in a broad range of contact time, part of experimental studies were conducted in the system with two and with three scrubbers in series. The obtained experimental results show that the high degree of EtO removal can be achieved (>98%) when the contact time is sufficiently long (about 25 s). The process is effective until the concentration of formed glycol in the solution reaches value of about 20%. The process is safe and there is no danger of ignition and explosion of air and EtO mixture, although at the entrance to the scrubber EtO concentrations are significantly above the lower explosive limit.

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Kencanawati, Martheana. "Studi Kemampuan Spray Tower untuk Penyisihan Polutan Gas Sulfur Dioksida dari Pembakaran Bahan Bakar Industri." Buletin Profesi Insinyur 2, no. 1 (November 16, 2019): 16–19. http://dx.doi.org/10.20527/bpi.v2i1.39.

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Sebagian sumber pencemaran sulfur dioksida adalah dari aktivitas manusia seperti gas buangan pabrik maupun kendaraan bermotor. Oleh karena itu, pencegahannya dapat dilakukan oleh manusia sendiri dengan berbagai usaha. Paper ini membahas mengenai upaya pencegahan polusi dari sulfur dioksida dengan menggunakan wet scrubber. Wet scrubber didesain dengan menggunakan mist eliminator tanpa media dan menggunakan air. Variabel dalam penelitian ini adalah debit air, ketinggian sprayer dan susun vertikal sprayer. Gas dianalisis dengan menggunakan metode konduktivitimetri manual. Pengukuran dengan metode ini dapat diaplikasikan pada yang memiliki range ≥0.05 ppm. Hasil yang diperoleh dari penelitian adalah persentase penyisihan untuk satu tingkat sprayer dengan debit terbesar 0,14 Liter/s adalah 74.15%. Satu tingkat sprayer menggunakan ketinggian kolom pada sprayer berjarak 110 cm. Sedangkan untuk dua tingkat prayer dengan ketinggian kolom 110 cm dan 41 cm menghasilkan penyisihan sebesar 97.74%Kata kunci: sulfur dioksida, spray tower, absorbsi, conductivitymetri

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Wang, Shi Bin, Ri Hui Chen, and Xiang Yun Meng. "Study on the Design of Venturi Scrubber on Metal Mine." Applied Mechanics and Materials 556-562 (May 2014): 1087–91. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.1087.

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Venturi scrubber is a high-efficiency wet dust collector,and has a high capture efficiency for small solid particles. Applied to metal mines, the venturi scrubber not only eliminate the mine dust in the processes of mining and driving, but also can capture the diesel exhaust particles effectively in theory. Then the air in the mine has been purified and the staff can keep away from the harm of mine dust and diesel exhaust particles. Based on the results of this research from the predecessor, the paper design a reasonable set of pilot programs for mine workers.

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Lee, Sang-Min, Byung-Min Kwon, and Kweon-Ha Park. "Flow characteristics according to internal structure of square wet scrubber." Journal of the Korean Society of Marine Engineering 43, no. 1 (January 31, 2019): 1–7. http://dx.doi.org/10.5916/jkosme.2019.43.1.1.

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Lewis, F. Michael, Lee A. Lundberg, and David A. Hoecke. "How to Get More Out of Your Existing Wet Scrubber." Proceedings of the Water Environment Federation 2016, no. 9 (January 1, 2016): 3103–18. http://dx.doi.org/10.2175/193864716819713394.

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Beghi, Ignazio, Terttaliisa Lind, and Horst-Michael Prasser. "Experimental studies on retention of iodine in a wet scrubber." Nuclear Engineering and Design 326 (January 2018): 234–43. http://dx.doi.org/10.1016/j.nucengdes.2017.11.025.

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Novosád, Jan, and Tomáš Vít. "Numerical simulation of flow in the wet scrubber for desulfurization." EPJ Web of Conferences 92 (2015): 02055. http://dx.doi.org/10.1051/epjconf/20159202055.

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Liang, Chenju, Yan-Jyun Chen, and Keng-Jung Chang. "Evaluation of persulfate oxidative wet scrubber for removing BTEX gases." Journal of Hazardous Materials 164, no. 2-3 (May 30, 2009): 571–79. http://dx.doi.org/10.1016/j.jhazmat.2008.08.056.

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Journal articles on the topic 'Wet scrubber'

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