Relevant bibliographies by topics / Wet scrubber

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Academic literature on the topic 'Wet scrubber'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "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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Dissertations / Theses on the topic "Wet scrubber"

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Taylor, Allison. "THE REDESIGNED VORTECONE: A MAINTENANCE-FREE WET SCRUBBER DEVICE." UKnowledge, 2019. https://uknowledge.uky.edu/mng_etds/48.

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Dust creates health and safety issues in mining and there are several different ways to reduce the amount of respirable dust created. Dust particles also affect the operation and efficiency of mining equipment. One device currently used to reduce dust in a coal mine is a flooded-bed dust scrubber. These type of scrubbers are found on continuous miners and are designed to capture dust particles close to the cutting head. However, the fibrous screens on the flooded-bed dust scrubber clog easily reducing both production and the quality and quantity of air miners are exposed too. The flooded-bed dust scrubber was designed in the 1980s and has not seen any significant changes since. A Vortecone is a wet scrubber system designed to capture small particles in the air and can easily replace the flooded-bed dust scrubber system on a continuous miner. The Vortecone was initially developed to capture over-sprayed paint particles and due to the capture ability was converted over into the mining industry. The first design of the Vortecone had two outlets and a large pressure drop across the system. The Vortecone was redesigned to have one outlet in order to increase confinement time of particles and thus increase the capture abilities. Using CFD analysis and laboratory testing, the redesigned Vortecone has been proven to have a lower resistance than the original design as well as the currently used convention screens. The Vortecone also proved to have a high capture efficiency at high airflows. This maintenance-free wet scrubber device requires much less maintenance than a conventional screen and thus can be used continually without interrupting production. The Vortecone has been designed so it can easily be mounted onto a continuous miner in place of the currently used scrubbers.
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Johansson, Wilhelm. "Modeling of Wet Scrubber with Heat Recovery in Biomass Combustion Plants." Thesis, Linnéuniversitetet, Institutionen för byggd miljö och energiteknik (BET), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-95585.

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During combustion of biomass, particulate matter is emitted, which has severe health impacts on humans. The company ITK Envifront has developed a scrubber technology that cleans the flue gas while also recovering the flue gas energy, increasing the efficiency of the combustion plant. In this thesis, a simulation model was built in MATLAB according to the Finite Element Method. Validation of the model against 3 different facilities showed reasonable accuracy with a tendency to overestimate the scrubber heat recovery and a mean prediction deviation of approximately 7 %. The model was then used to make suggestions for process optimization. An increase of funnel height, and number of spray nozzles could increase the scrubbers heat recovery with up to 7 % and 8 %, respectively. Addition of moisture to the flue gas through evaporation of water droplets had the potential to increase scrubber efficiency with 10 %, and usage of the highest setting of the adjustable nozzle bank showed the potential to increase the efficiency with up to 5 % compared to the mid-setting. Furthermore, the process parameters of a scrubber with optimized running conditions, was compared to a scrubber with the current running conditions, through running of the developed model. The optimized running conditions showed an increase in scrubber efficiency with up to 14 %, resulting in an increase in scrubber heat recovery of approx. 90 kW at a boiler load of 3 MW. As a final conclusion, the developed model shows great potential to be used to as a toolbox to further investigate and optimize the scrubber design and operation. As a future work, it would be interesting to further model its performance regarding particle removal.
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Hadlocon, Lara Jane Sebuc. "Development of Spray-Type Acid Wet Scrubbers for Recovery of Ammonia Emissions from Animal Facilities." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1388716963.

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Vavříková, Petra. "Návrh čištění energoplynu mokrou metodou." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378721.

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Gasification is a process which produces gas of low heating value, however, generated gas contains several pollutants. This thesis is dealing with the issue of purity and cleaning of generated gas. Theoretic part of thesis consists of research, describing the very process of gasification itself, mapping of possible pollutants appearing during gasification and particular ways of purifying gas, looking in detail at wet scrubbing with several scrubbing liquids. Further, it looks into proposition of conditions for wet scrubbing and balance of scrubbing liquids. Next part deals with calculation of purifying line. Main goal of calculations, is to determine the length of the pipeline, transfering polluted gas from the gasifier to the filter for elimination of solid particles and wet scrubber. Key aspect of length calculation was the input and output temperature of the gas, determined by characteristics of the filter. Calculation for wet scrubber istelf is also included, to detremine if the output temperature of the scrubbing liquid after the passage of the gas needs to be modified by additional cooling or heating. For experimental purposes, syngas generated by gasification of biomass, is gathered from the atmospheric gasifier Biofluid 2. Experiment itself inquires into the purity of the gas before and after the passage through solid particles filter and through the wet scrubber. The purpose of this thesis is to determine the chemical composition of gas before and after wet scrubbing, the difference of composition of tar gathered from purified and nonpurified gas and using gathered data to evaluate the effectiveness of wet scrubbing.
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Zerwas, Alexander Ariyoshi. "Modelagem e simulação do escoamento em um sistema de lavagem de gases por técnicas de fluidodinâmica computacional." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-14032017-143507/.

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Estudou-se a aplicação de uma modelagem RANS, com a utilização do modelo de turbulência k-? na modelagem do escoamento no interior de um sistema de lavagem de gases, composto por um lavador Venturi e uma coluna de spray, por técnicas de fluidodinâmica computacional (CFD), com a fase líquida resolvida pela abordagem Lagrangiana e a atomização secundária dessas por diferentes modelos de quebra. Utilizou-se o pacote comercial de CFD da ANSYS CFX 15.0 com as simulações realizadas em estado transiente. Verificaram-se os resultados obtidos pelo simulador para um lavador Venturi em escala piloto com dados da literatura, obtendo-se boa adequação para a perda de pressão ao longo do equipamento. Comparou-se a influência do tamanho das gotas de líquido da injeção na distribuição de tamanho de gotas ao longo do equipamento utilizando o modelo de quebra CAB (Cascade Atomization and drop Breakup), obtendo-se uma melhor dispersão das gotas de líquido na secção transversal do lavador ao se utilizar na injeção, uma distribuição de tamanho de gotas ao invés de gotas com mesmo diâmetro. Simularam-se diferentes condições de vazão de líquido e gás em um lavador Venturi em escala industrial e compararam-se os resultados de perda de pressão obtidos com correlações da literatura, obtendo-se boa adequação para as regiões iniciais do equipamento. Utilizando o modelo de quebra CAB e a abordagem Euler-Lagrange, comparou-se a distribuição de tamanho de gotas ao longo do lavador Venturi industrial para diferentes vazões de gás. Com a simulação do lavador Venturi, utilizou-se os resultados obtidos neste e simulou-se o sistema de lavagem de gases completo (coluna de Spray e lavador Venturi). Comparou-se ao final a retirada de poluentes por meio da impactação inercial e da difusão, obtendo-se uma melhor probabilidade de retirada de poluentes com o aumento da vazão de líquido.
The flow field inside a wet scrubber was simulated with a RANS model using Computational Fluid Dynamics (CFD) in which the multiphase flow was solved by an Euler-Lagrange approach. Turbulence was modeled by the k-? model and droplet breakup was assumed to occur. The transient flow equations were solved using a commercial CFD package (ANSYS CFX 15.0). Simulations of a pilot plant Venturi scrubber were compared with literature data, in which a good agreement level was achieved for pressure loss through the scrubber. Droplet size distribution was evaluated throughout the scrubber by changing droplet diameter of injected liquid and using a Cascade Atomization and drop Breakup model (CAB). A better liquid dispersion inside the scrubber was achieved for a droplet size distribution injection when compared with a single diameter droplet liquid injection. After the results verification by comparing with data from a pilot scale Venturi, pressure loss for different flow conditions was compared between numerical simulations and literature correlations in an industrial size Venturi scrubber, achieving a good agreement for the entrance section of the scrubber. Droplet size distribution throughout the industrial Venturi scrubber for different gas mass flow conditions were also compared using the CAB model and Euler-Lagrange approach. Removal of contaminants was evaluated by two parameters, being inertial impaction of particulate and diffusion to droplet surface, by which a better contaminant removal was achieved for higher liquid flow rates.
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Relangi, Durga Devika. "WETTING CHARACTERISTICS OF HERRIN COAL AND ITS APPLICATION FOR IMPROVED DUST CONTROL." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/theses/827.

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This thesis has developed wetting characteristics of coal dust from Herrin coal seam in Illinois for improved respirable coal and quartz dust (< 10µm) control. Wetting characteristics were assessed by a wettability technique called Fixed Time Wettability (FTW) method which simulates the actual underground wetting environment. Immediate roof and immediate floor materials bulk samples were found to be 100% wettable by water alone, whereas coal seam samples were 55-90% wettable. Two variables: contact time between water droplets and dust particles and, the temperature of the water were found to affect the degree of wettability. FTW was carried out at as a function of water temperature (7.2oC to 40.5oC) and contact time (10 to 25 seconds) which increased wettability 2-18% and 8-32%, respectively. In addition, the wetted and un-wetted samples collected from wettability experiments were subjected to Scanning Electron Microscopy (SEM) and particle size distribution analyses. It was found that particles are irregular in shape in both wetted and un-wetted fractions and some agglomeration of fine particles was observed in a few un-wetted fraction samples. The concept of increased contact time was incorporated in engineering controls by increasing the wet scrubber filter screen inclination (which is a function of the screen surface area). The filter screen inclination was minimizing the pressure drop across it using Computational Fluid Dynamics (CFD) analysis. It was found that 60 degree (with respect to the vertical) would provide minimal pressure drop and should be considered for implementation. Additional research should be conducted on assessing selective wetting of different particle sizes of coal and quartz in airborne dust, developing data on wettability as a function of particle size and implementing the developed concepts such as contact time and temperature in the field for improved dust control.
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Kubík, Michal. "Návrh čištění odpadních plynů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378492.

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This diploma thesis deals with impurities in waste gases and syngas. Those gases usually have low heating value and contain impurities which are the main issue of those gas fuels. Waste gases and syngas can replace natural gas after right gas treatment. First part is theoretical. It starts with description of biomass and gasification technology. Then the waste gases are described – their origin and usual composition. Next part is dedicated to impurities and is followed by impurities treatment technologies. For removing of almost every type of impurity wet scrubber can be used which is described in detail in following part. There are other types of gas cleaning technologies, so they are described too but not in such detail as wet scrubber. In second part the wet scrubber is designed, and its function is tested by cleaning syngas from fluidized-bed gasifier called Biofluid. During gas cleaning in wet scrubber the influence of water temperature on efficiency of tar removal is examined.
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Kantipudi, Rohini. "Computational Fluid Dynamics Modeling Of Airflow patterns around a Room-and-pillar mining face area." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1968005101&sid=21&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Casanova, Luca. "Test sperimentali e modellazione di una torre di lavaggio per la filtrazione di particolato sottile in impianti di combustione delle biomasse." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8776/.

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This study investigates biomass and particulate matter also known as PM produced from the combustion of a domestic boiler powered by mais and how to separate PM from the stream of smoke output from the boiler using wet scrubber with structured packing. Sperimentations show the inefficiency of the separator used, so we provide an optimization of the structured packing changing geometric parameters as angle of the bend or thickness of the channels. In order to obtain a higher separation efficiency we remove the structured packinkg and introduce a packed bed composed of spheres of polyethylene with a diameter of 3 mm.
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Krištof, Ondřej. "Vytváření kapalinové clony pro absorpci plynných exhalací." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-409524.

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The dissertation thesis deals with the application of absorption methods for the separation of gaseous pollutants from polluted gaseous mixtures using a pilot plant scrubber. The efficiency of the gaseous pollutant removal was determined based on the hydrodynamic distribution of fluids inside the spray chamber. A TF-28 150 spiral nozzle, which was used to spray the absorption liquid, was experimentally characterized. Specifically, the pressure impact pattern of the liquid produced by the nozzle was investigated using intrusive methods and the effective spray angles, the modes of primary and secondary atomization, the droplet size and liquid velocity distributions were determined using non-intrusive optical methods. Numerical simulations of flow of model gas phase inside the sprinkler head and spraying of the liquid through the spiral nozzle were also carried out. The obtained data can be applied to estimate the interface area and together with the determination of the coefficient of total mass transfer thus define the kinetics of chemisorption for a given absorbent/absorbate combination.
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Books on the topic "Wet scrubber"

1

Schifftner, Kenneth C. Wet scrubbers. 2nd ed. Lancaster, Pa: Technomic Pub., 1996.

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Schifftner, Kenneth C. Wet scrubbers. Chelsea, MI: Lewis Publishers, 1986.

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Brown, Charles A. Eliminating a sulfuric acid mist plume from a wet caustic scrubber on a petroleum coke calciner. [New York, N.Y: American Institute of Chemical Engineers, 2001.

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Fournier, D. J. The fate of trace metals in a rotary kiln incinerator with a single-stage ionizing wet scrubber: Project summary. Cincinnati, OH: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1991.

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Krzyżyńska, Renata. Zintegrowane oczyszczanie spalin z SO₂, NOx i Hg w układach mokrego odsiarczania spalin: Integrated removal of SO₂, NOx and Hg in the wet flue gas desulphurization systems. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 2012.

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McCormick, R. Capital and O&M cost relationships for hazardous waste incineration : addendum no. 1--ionizing wet scrubber costs. Cincinnati, OH : U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory, 1985.

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Wet Scrubbers, Second Edition. Routledge, 2017. http://dx.doi.org/10.1201/9780203733899.

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Billheimer, John. Hitchcock and the Censors. University Press of Kentucky, 2019. http://dx.doi.org/10.5810/kentucky/9780813177427.001.0001.

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The Motion Picture Production Code controlled the content and final cut on all films made and distributed in the US from 1934 to 1968. Code officials protected sensitive ears from the standard four-letter words as well as a few five-letter words like tramp and six-letter words like cripes. They also scrubbed ‘excessively lustful’ kissing from the screen, and ensured that no criminal went unpunished. Censors demanded an average of twenty changes, ranging from trivial to mind-boggling, on each of Alfred Hitchcock’s films during his most productive years. No production escaped these changes, which rarely improved the finished film. Code reviewers dictated the ending of’ Rebecca, shortened the shower scene in’ Psycho, absolved Cary Grant of guilt in’ Suspicion, edited Cole Porter’s lyrics in’ Stage Fright, and decided which shades should be drawn in’ Rear Window. Nevertheless, Hitchcock still managed to push the boundaries of sex and violence permitted in films by charming (and occasionally tricking) the censors and by swapping off bits of dialogue, plot points, and individual shots (some of which had been deliberately inserted as trading chips) to protect cherished scenes and images. The director’s priorities in dealing with the censors highlight both his theories of suspense and the single-mindedness of Code officials. Hitchcock and the Censors’ traces the forces that led to the Production Code and describes Hitchcock’s interactions with Code officials on a film-by-film basis as he fought to protect his creations, bargaining with Code reviewers and sidestepping censorship to produce a lifetime of memorable films.
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Book chapters on the topic "Wet scrubber"

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Danzomo, B. A., Sambo A. Umar, and Momoh Jimoh E. Salami. "Wet Scrubber Design." In Studies in Systems, Decision and Control, 19–62. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-74540-0_3.

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Cooper, Douglas W. "Wet Scrubber Particulate Collection." In Handbook of Powder Science & Technology, 803–44. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-6373-0_19.

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Wang, Zhihua, Kefa Cen, Junhu Zhou, and Jianren Fan. "Simultaneous Multi-Pollutants Removal with Ozone and Wet Scrubber." In Advanced Topics in Science and Technology in China, 71–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43514-4_4.

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Dando, Neal R., Weizong Xu, and Oscar Fisher. "Impact of Potroom Work Practices on Roofline Fluoride Emissions and Wet Scrubber Efficiency." In Light Metals 2015, 603–5. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093435.ch100.

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Dando, Neal R., Weizong Xu, and Oscar Fisher. "Impact of Potroom Work Practices on Roofline Fluoride Emissions and Wet Scrubber Efficiency." In Light Metals 2015, 603–5. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48248-4_100.

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Kurella, Swamy, Pavan Kishan Bhukya, and B. C. Meikap. "Mathematical Modelling on Particulate Removal in Multistage Dual-flow Sieve Plate Column Wet Scrubber." In Recent Advances in Chemical Engineering, 237–45. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1633-2_26.

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Buonicore, Anthony J. "Wet Scrubbers." In Air Pollution Control Equipment, 233–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-85144-5_9.

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Brunner, Calvin R. "Wet Gas Scrubbers." In Hazardous Air Emissions from Incineration, 134–44. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2539-0_13.

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Czech, T., J. Luckner, A. Jaworek, A. Krupa, and M. Lackowski. "Dust particle removal by wet-type electrostatic scrubber." In Electrostatics 2003, 349–54. Taylor & Francis, 2004. http://dx.doi.org/10.1201/9781420034387.ch55.

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Ro, K. C., S. W. Ko, J. S. Roh, H. S. Ryou, and S. H. Lee. "A Numerical Study on a Spray System Optimization for Size Reduction of a Wet Type Scrubber." In Recent Progress in Computational Sciences and Engineering, 469–72. CRC Press, 2019. http://dx.doi.org/10.1201/9780429070655-112.

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Conference papers on the topic "Wet scrubber"

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Gorsky, Nikita, and C. F. Peter Bowen. "Improving Semi-Dry Scrubber Performance Through Gas Flow Modeling." In 13th Annual North American Waste-to-Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/nawtec13-3156.

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Poor flue gas flow distribution in the semi-dry scrubbers used in Waste-to-Energy facilities can cause reduced residence time for lime slurry spray droplet evaporation and subsequent “wet carryover” resulting in solids deposits on the scrubber vessel walls and ductwork and also baghouse bag blinding. In addition to promoting corrosion, the removal of deposits during boiler outages is very labor intensive. This paper identifies how gas flow modeling conducted in conjunction with Nels Consulting Services, Inc. on several different types of scrubbers at Covanta Energy’s Waste-to-Energy facilities resulted in modifications which increased the actual flue gas residence time, considerably reduced the solids deposits (scale) and associated maintenance costs, and in some cases reduced the pressure drop across the scrubbers and baghouses. The data presented includes typical model study velocity distribution data (before and after the modifications), vessel sketches, and photographs. Associated work included in-field scrubber outlet duct temperature and velocity distribution testing. The results of the in-field scrubber outlet temperature distribution testing, done both before and after the scrubber modifications, confirmed the improvements numerically by showing reduced flue gas temperature variation in the scrubber outlet duct.
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Abdulwahid, Ahmed, Rong Situ, Richard Brown, and Wenxian Lin. "Bubble Dynamics in a Diesel Exhaust Wet Scrubber." In 22nd Australasian Fluid Mechanics Conference AFMC2020. Brisbane, Australia: The University of Queensland, 2020. http://dx.doi.org/10.14264/93b2cf8.

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Abdulwahid, Ahmed, Rong Situ, Richard Brown, and Wenxian Lin. "Thermodynamic Analysis of a Diesel Exhaust Wet Scrubber." In 22nd Australasian Fluid Mechanics Conference AFMC2020. Brisbane, Australia: The University of Queensland, 2020. http://dx.doi.org/10.14264/9b3f9c0.

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Papadopoulos, P., T. Lind, and H. M. Prasser. "Analyzing Droplet Size Distributions Inside a Self-Priming Venturi Scrubber for Filtered Containment Venting Systems." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82227.

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After the accident in the Fukushima Daiichi nuclear power plant, the interest of adding Filtered Containment Venting Systems (FCVS) on existing nuclear power plants to prevent radioactive releases to the environment during a severe accident has increased. Wet scrubbers are one possible design element which can be part of an FCVS system. The efficiency of this scrubber type is thereby depending, among others, on the thermal-hydraulic characteristics inside the scrubber. The flow structure is mainly established by the design of the gas inlet nozzle. The venturi geometry is one of the nozzle types that can be found in nowadays FCVS. It acts in two different steps on the removal process of the contaminants in the gas stream. Downstream the suction opening in the throat of the venturi, droplets are formed by atomization of the liquid film. The droplets are contributing to the capture of aerosols and volatile gases from the mixture coming from the containment. Studies state that the majority of the contaminants is scrubbed within this misty flow regime. At the top of the venturi, the gas stream is injected into the pool. The pressure drop at the nozzle exit leads to the formation of smaller bubbles, thus increasing the interfacial area concentration in the pool. In this work, the flow inside a full-scale venturi scrubber has been optically analyzed using shadowgraphy with a high-speed camera. The venturi nozzle was installed in the TRISTAN facility at PSI which was originally designed to investigate the flow dynamics of a tube rupture inside a full-length scale steam generator tube bundle. The data analysis was focused on evaluating the droplet size distribution and the Sauter mean diameter under different gas flow rates and operation modes. The scrubber was operated in two different ways, submerged and unsubmerged. The aim was to include the effect on the droplet sizes of using the nozzle in a submerged operation mode.
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Kankanamge, Nilanka, Anjana Matarage, and Kapila Perera. "Packed Column With Wet Scrubber For Boiler Exhaust Purification." In 2019 Moratuwa Engineering Research Conference (MERCon). IEEE, 2019. http://dx.doi.org/10.1109/mercon.2019.8818806.

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Palevi, Bima Romadhon Parada Dian, Muhammad Rivai, and Djoko Purwanto. "Fuzzy Logic-Based Wet Scrubber to Control Air Pollutant." In 2019 International Seminar on Intelligent Technology and Its Applications (ISITIA). IEEE, 2019. http://dx.doi.org/10.1109/isitia.2019.8937142.

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Beck, Griffin, Nathan Andrews, A. Grey Berry, and Amy McCleney. "Wet Gas Formation and Carryover in Compressor Suction Equipment." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59353.

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Abstract In gas processing, boosting, and gathering applications, gas-liquid separator equipment (typically referred to as a scrubber) is placed upstream of each reciprocating compressor stage to remove water and hydrocarbon condensates. However, field experience indicates that liquids are often still present downstream of the separation equipment. When liquids are ingested into the reciprocating compressor, machinery failures, some of which are severe, can result. While it is generally understood that liquid carryover and condensation can occur, it is less clear how the multiphase fluid moves through equipment downstream of the scrubber. In this paper, mechanisms responsible for liquid formation and carryover into reciprocating compressors are explored. First, the effects of liquid ingestion on reciprocating compressors reported in the open literature are reviewed. Then, the role of heat and pressure loss along the gas flow path is investigated to determine whether liquid formation (i.e., condensation) is likely to occur for two identical compressors with different pulsation bottle configurations. For this investigation, conjugate heat transfer (CHT) models of the suction pulsation bottles are used to identify regions where liquid dropout is likely to occur. Results of these investigations are presented. Next, liquid carryover from the upstream scrubber is considered. Multiphase models are developed to determine how the multiphase fluid flows through the complex flow path within the pulsation bottle. Two liquid droplet size distributions are employed in these models. Descriptions of the modeling techniques, assumptions, and boundary conditions are provided.
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Buecker, Brad. "Important Concepts of Wet-Limestone Flue Gas Desulfurization." In ASME 2008 Power Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/power2008-60064.

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Many utilities are installing wet flue gas desulfurization (FGD) systems to comply with tighter sulfur dioxide regulations. These installations will introduce many utility engineers and other technical personnel to a sometimes complex air pollution control technology. This paper outlines fundamental concepts of wet limestone FGD, particularly in the most common design, spray towers. Topics will include liquid-to-gas ratio, chemistry operating parameters, limestone grinding and classification, materials selection for a rugged environment, byproduct disposal, and scrubber performance monitoring. The paper will also briefly review cutting-edge alternatives to spray towers.
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Danzomo, Bashir Ahmed, Momoh Jimoh E. Salami, and Md Raisuddin Khan. "Hardware Implementation of ANFIS Controller for Gas-Particle Separations in Wet Scrubber System." In 2014 International Conference on Computer & Communication Engineering (ICCCE). IEEE, 2014. http://dx.doi.org/10.1109/iccce.2014.85.

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Herrlander, Bo. "Novel Gas Cleaning With Integrated Energy Recovery." In 19th Annual North American Waste-to-Energy Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/nawtec19-5415.

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High-energy recovery combined with low emissions to air and water was targeted when Jo¨nko¨ping Energi planned their new Waste to Energy plant at Torsvik in Sweden. The plant is compliant with the new EU Industry Directive and the Waste Frame Directive R-formula, which defines energy recovery levels for recycle of energy. In total about 160 000 tons of municipal (40%) and commercial waste (60%) is annually converted into usable energy. The average heat value is 11,7 MJ/kg. The energy produced is a combination of electricity (14 MWe) and heat (42–56 MWth, depending on electricity production). The heat is recovered both in a boiler and in a condenser. The flue gas condensing system is combined with a heat pump (10 MWth) to optimize the heat recovery rate. The plant is designed to fulfill the requirements set by the Swedish authorities, which are more stringent than the EU emission requirements. Some examples of the plant emissions to air guarantees: dust 5, HCl 5, SO2 20, HF1, Hg 0,03, Cd+Tl 0,05, other HM 0,5 all in mg/Nm3 and dioxin 0,05 ng/Nm3. The flue gas cleaning upstream of the condenser consists of a combination of a semi-dry system and a wet scrubber. The gas cleaning system operating range goes from 60 000 up to 127 000 Nm3/h depending on load and fuel heat value. The semi-dry system is carrying out the major part of the gas cleaning and is sufficient to comply with the air regulations. However, in order to minimize the treatment of the condensate from the condenser the wet scrubber is installed after the semi-dry system and upstream the condenser. The blow down from the scrubber is reused within the plant. Thus the polishing scrubber secures minimal treatment of the condensate to comply with the local stringent limits, particular chlorides, before release to the recipient lake Munksjo¨n. Emissions to water were 2010 nitrogen 1,7 mg/l, Cl <3,6 mg/l, As 0,66 μg/l, Cd <0,07 μg/l, Cr <6 μg/l, Cu 0,8 μg/l, Hg <0,4 μg/l, Ni <0,66 μg/l, Pb<1,2 μg/l, Tl<1,3 μg/l, Zn<7,2 μg/l and PCDD/PCDF 0,0088 ng/l. In the wet scrubber acid stage residual HCl and excess ammonia from the SNCR system are removed. The latter compound is important to capture in order to prevent eutrophication. The combination of a semidry and a wet system enables an optimization of the flue gas cleaning with regard to the different operating situations, taking into account seasonal demand variations as well as fuel alterations. The concept has demonstrated very low emissions combined with low consumption of lime. The possibility to optimize the flue gas cleaning performance is a prerequisite for minimal condensate treatment and optimal energy recovery. The paper will describe the system and the operating experiences.
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Reports on the topic "Wet scrubber"

1

Smith, K., B. Lani, D. Berisko, C. Schultz, W. Carlson, and L. B. Benson. Enhanced NO{sub x} removal in wet scrubbers using metal chelates. Final report, Volume 1. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/48241.

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Enhanced NO{sub x} removal in wet scrubbers using metal chelates. Final report, Volume 2. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/372704.

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