Academic literature on the topic 'Flue gas HCl removal'

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Journal articles on the topic "Flue gas HCl removal"

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Wu, Wei, Yuanfeng Wu, Tongwei Wang, Decheng Wang, Qinyang Gu, and Baosheng Jin. "HCl Removal Using Calcined Ca–Mg–Al Layered Double Hydroxide in the Presence of CO2 at Medium–High Temperature." Catalysts 10, no. 1 (December 24, 2019): 22. http://dx.doi.org/10.3390/catal10010022.

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This present work aimed to investigate the influence of CO2 on HCl removal using calcined Ca–Mg–Al layered double hydroxides (CaMgAl-LDHs) at medium–high temperature (400–800 °C) in a fixed-bed reactor. It was revealed that a moderate CO2 concentration (~6%) in the flue gas of the municipal solid-waste incinerators could reduce the HCl capacity of the CaMgAl-layered double oxides (CaMgAl-LDOs). The highest capacity for HCl removal was observed over the CaMgAl-LDOs at 600 °C. However, sintering was also detected when the reaction temperature was below the calcination temperature (600 °C). Moreover, the decreasing HCl adsorption capacity of CaMgAl-LDOs was attributed to the existence of CO2 in the flue gas, which could efficiently inhibit the decomposition of carbonates as well as the conversion into metal chloride during the HCl removal process.
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Zhao, Li, Yang-wen Wu, Jian Han, Han-xiao Wang, Ding-jia Liu, Qiang Lu, and Yong-ping Yang. "Density Functional Theory Study on Mechanism of Mercury Removal by CeO2 Modified Activated Carbon." Energies 11, no. 11 (October 23, 2018): 2872. http://dx.doi.org/10.3390/en11112872.

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Doping of CeO2 on activated carbon (AC) can promote its performance for mercury abatement in flue gas, while the Hg0 removal mechanism on the AC surface has been rarely reported. In this research, density functional theory (DFT) calculations were implemented to unveil the mechanism of mercury removal on plain AC and CeO2 modified AC (CeO2-AC) sorbents. Calculation results indicate that Hg0, HCl, HgCl and HgCl2 are all chemisorbed on the adsorbent. Strong interaction and charge transfer are shown by partial density of states (PDOS) analysis of the Hg0 adsorption configuration. HCl, HgCl and HgCl2 can be dissociatively adsorbed on the AC model and subsequently generate HgCl or HgCl2 released to the gas phase. The adsorption energies of HgCl and HgCl2 on the CeO2-AC model are relatively high, indicating a great capacity for removing HgCl and HgCl2 in flue gas. DFT calculations suggest that AC sorbents exhibit a certain catalytic effect on mercury oxidation, the doping of CeO2 enhances the catalytic ability of Hg0 oxidation on the AC surface and the reactions follow the Langmuir–Hinshelwood mechanism.
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Yang, Ru, Yongfa Diao, and Befkadu Abayneh. "Removal of Hg 0 from simulated flue gas over silver-loaded rice husk gasification char." Royal Society Open Science 5, no. 9 (September 2018): 180248. http://dx.doi.org/10.1098/rsos.180248.

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Mercury released into the atmosphere from coal combustion is harmful to humans and the environment. Rice husk gasification char (RHGC) is an industrial waste of biomass gasification power generation, which is silver-loaded to develop a novel and efficient sorbent for mercury removal from simulated flue gas. The experiment was carried out in a fixed-bed experimental system. The Hg 0 adsorption performance of RHGC was improved significantly after loading silver. Hg 0 adsorption capacity and mercury inlet concentration were found to be nonlinear. The adsorption capacity of RHGC decreased with the increase of reaction temperature. SO 2 inhibited mercury removal, NO and HCl promoted mercury removal; the Hg 0 adsorption capacity in the simulated flue gas was higher than that in pure N 2 . The silver-loaded rice husk gasification char (SRHGC) could be recycled about five times without significantly losing its removal efficiency. The SRHGC will not only reduce the cost of mercury removal but also save energy and reduce environmental pollution. At the same time, it provides a new way for the resource utilization of RHGC.
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Lancia, A., D. Musmarra, and F. Pepe. "Wet‐dry process of HCL removal from flue gas: experimental study on operating parameters." International Journal of Environmental Studies 56, no. 5 (August 1999): 629–40. http://dx.doi.org/10.1080/00207239908711228.

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Shanshan, Zhang, Wang Renlei, Tang Guorui, and Dai YU. "Application and performance evaluation of desulfurization wastewater spray drying technology." E3S Web of Conferences 143 (2020): 02029. http://dx.doi.org/10.1051/e3sconf/202014302029.

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In order to realize zero discharge of desulfurization wastewater, spray drying technology of desulfurization wastewater was used in 2x330MW unit of a power plant. Its principle was to use a rotary atomizer for atomization,and a part of hot flue gas was drawn from the SCR denitrification reactor and air preheater into the drying tower, the heat was used to evaporate the desulfurization wastewater in a spray drying tower. The salt in the waste water was mixed with the dust, which was collected and removed by the electric dust remover. Then the water vapor was mixed with the flue gas and finally enters the desulfurization tower.The field test was carried out under the condition that the unit load was 100% and the amount of desulfurization wastewater treated was 5.1m3/h.The results showed that the hot smoke gas volume of drying tower was about 64896m3/h, The smoke temperature at the inlet and outlet of the drying tower were 335℃ and 205℃ respectively,the moisture content of drying products was only 0.05%. The content of HCl in the flue gas at the inlet and outlet of the drying tower were 55mg/L and 195mg/L respectively, the mass fractions of Cl removal and Cl volatilization in desulfurization wastewater were 87.7% and 12.3% respectively. The increase of Cl content in the dried products had little effect on the utilization of fly ash.
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Tseng, Hui-Hsin, Ming-Yen Wey, Yu-Shen Liang, and Ke-Hao Chen. "Catalytic removal of SO2, NO and HCl from incineration flue gas over activated carbon-supported metal oxides." Carbon 41, no. 5 (2003): 1079–85. http://dx.doi.org/10.1016/s0008-6223(03)00017-4.

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Ochiai, Ryota, Md Azhar Uddin, Eiji Sasaoka, and Shengji Wu. "Effects of HCl and SO2Concentration on Mercury Removal by Activated Carbon Sorbents in Coal-Derived Flue Gas†." Energy & Fuels 23, no. 10 (October 15, 2009): 4734–39. http://dx.doi.org/10.1021/ef900057e.

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Zroychikov, N. A., S. A. Fadeev, G. I. Dvoskin, L. M. Dudkina, V. F. Kornilyeva, and G. A. Tarasov. "Pre-Dehalogenation of Chlorine-Containing Medical Waste." Ecology and Industry of Russia 23, no. 9 (September 10, 2019): 4–9. http://dx.doi.org/10.18412/1816-0395-2019-9-4-9.

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The results of the study of the destruction of a model mixture of medical waste (MW) of typical composition and their components in the range of pyrolysis temperature of 400–650 °C are presented. It is shown that during the initial stage of waste heating by the time the temperature reaches 350 °C, 86–88 % of chlorine in the form of hydrogen chloride (HCl) passes into the gas phase. Considered developed and protected by the patent of the Russian Federation scheme of organization of thermal utilization of MW by two-stage pyrolysis with the removal of HCl from the gas stream at the first stage of the process with its subsequent neutralization with an alkaline solution, which significantly reduces the possibility of the formation of dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) in the second stage of pyrolysis, gaseous products in the form of a concentrated gas-vapor mixture are burned at a temperature of 1000–1350 °C, which ensures fire destruction of all the organic components of pyrolysis and environmental safety of exhaust flue gases.
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Dal Pozzo, Alessandro, Giacomo Muratori, Giacomo Antonioni, and Valerio Cozzani. "Economic and environmental benefits by improved process control strategies in HCl removal from waste-to-energy flue gas." Waste Management 125 (April 2021): 303–15. http://dx.doi.org/10.1016/j.wasman.2021.02.059.

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Kluczka, Joanna. "Removal of Boron and Manganese Ions from Wet-Flue Gas Desulfurization Wastewater by Hybrid Chitosan-Zirconium Sorbent." Polymers 12, no. 3 (March 10, 2020): 635. http://dx.doi.org/10.3390/polym12030635.

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Flue gas desulfurization (FGD) wastewater, after the alkaline precipitation and coagulation processes, often requires additional treatment in order to reduce the concentrations of boron and heavy metals below the required limits. In this study, we present an innovative and environmentally friendly method for boron and manganese removal that is based on a hybrid chitosan-zirconium hydrogel sorbent. The results from the batch adsorption experiment indicated that the uptake capacity for boron and manganese was equal to 1.61 mg/g and 0.75 mg/g, respectively, while the column study indicated that the total capacity of boron and manganese was equal to 1.89 mg/g and 0.102 mg/g, respectively. The very good applicability of the Langmuir isotherm at 25 °C suggested the monolayer coverage of the boron species onto the hybrid chitosan-zirconium hydrogel with a maximum adsorptive capacity of 2 mg/g. The amounts of boron and manganese in purified water could be decreased to less than 1 mg/dm3 and 0.05 mg/dm3, respectively, starting from the initial concentration of boron equal to 24.7 mg/dm3 and manganese equal to 3.0 mg/dm3 in FGD wastewater. Selective desorption of boron from the loaded bed was favorable when a NaOH solution was used, while manganese was preferentially eluted with a HCl solution. It is important to note that such an innovative method was investigated for the first time by testing borax recovery from wastewater in terms of an eco-technological perspective.
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Dissertations / Theses on the topic "Flue gas HCl removal"

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Daoudi, M. "The removal of HCl from hot gases with calcined limestone." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381217.

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Schmidt, Douglas Stephen. "Electrochemical removal of SOx from flue gas." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/10235.

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Schmidt, Anne. "Heavy metal removal from flue gas streams using supported ionic liquids." Thesis, Queen's University Belfast, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711899.

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Especially in proximity to metal smelters, heavy metal concentrations are high in the soil and the risk of heavy metal exposure is unneglectable. Therefore, an efficient removal of heavy metals from flue gases is essential. This thesis aim is to remove low concentrations of heavy metals from the flue gas. In order to achieve a high capture efficiency with a high flow rate of the flue gases, supported ionic liquid phases are used. For a pre-selection of suitable ionic liquids, the solubility of heavy metal oxides were screened in several ionic liquids. The best arsenic oxide solubility was observed in ionic liquids with Lewis basic anions. The solubility of arsenic(III) oxide and arsenic(V) oxide in ionic liquids with carboxylate anions decreases with increasing hydrophobicity. The arsenic(III) oxide solubility in phosphonium and ammonium chlorides increased with increasing hydrophobicity. In the solution arsenic(V) oxide, arsenic is present as arsenate anions. An equilibrium of arsenite and arsenate was found for arsenic (III) oxide in acetate containing ionic liquids and chloride - arsenic complexes are postulated in phosphonium chlorides. The highest lead(II) oxide solubility was observed in phosphonium chlorides, phosphonium bromides and imidazolium carboxylates. In the solution, lead is most likely present as anionic lead(ll) hydroxides. In the mixtures of selenium(IV) oxide and several ionic liquids, reduction of selenium(IV) to elemental selenium or H2Se occurs. In the solution, selenium might be present as selenite anions, or SeO2-ionic liquid cation or SeO2-ionic liquid anion complexes. The results of this thesis indicate, that it is possible to capture heavy metals from the gas phase more efficiency with SILP than uncoated activated carbon. [P6 6 6 14]CI coated on activated carbon was identified as the most efficient materials studied in this thesis to capture arsenic from a lead blast furnace flue gas stream (Umicore, Hoboken, Belgium).
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Liu, Zhouyang. "Heterogeneous Catalytic Elemental Mercury Oxidation in Coal Combustion Flue Gas." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1512045805884364.

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JI, LEI. "Novel Nano-Structured Sorbents for Elemental and Oxidized Mercury Removal from Flue Gas." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212028586.

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McHenry, Dennis John Jr. "Development of an electrochemical membrane process for removal of SOx/NOx from flue gas." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/11698.

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Sanghavi, Urvi. "Novel Regenerable Adsorbents for Wastewater Treatment from Wet Flue Gas Scrubbers." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin147982088374556.

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Gao, Yang. "Low-temperature removal of hydrogen chloride from flue gas using hydrated lime as a sorbent." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175884147.

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Li, Can. "Simultaneous Removal of Elemental Mercury and NO over Modified SCR Catalyst in Coal Combustion Flue Gas." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin161374169547422.

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Li, Ling. "Production of a new wastewater treatment coagulant from fly ash with concomitant SO₂ removal from flue gas." [Ames, Iowa : Iowa State University], 2008.

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Books on the topic "Flue gas HCl removal"

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Wang, Zhihua, Kefa Cen, Junhu Zhou, and Jianren Fan. Simultaneous Multi-Pollutants Removal in Flue Gas by Ozone. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43514-4.

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Damle, Ashok. Modeling of SOb2s removal in spray-dryer flue-gas desulfurization system. Research Triangle Park, NC: U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1986.

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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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Wang, Zhihua, Kefa Cen, Junhu Zhou, and Jianren Fan. Simultaneous Multi-Pollutants Removal in Flue Gas by Ozone. Springer, 2015.

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Book chapters on the topic "Flue gas HCl removal"

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Vogtlin, G. E., and B. M. Penetrante. "Pulsed Corona Discharge for Removal of NOx from Flue Gas." In Non-Thermal Plasma Techniques for Pollution Control, 187–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78476-7_15.

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Kuang, Junyan, Wenqing Xu, Tingyu Zhu, and Pengfei Jing. "Mercury Removal from Coal Combustion Flue Gas by Fly Ash." In Cleaner Combustion and Sustainable World, 395–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30445-3_55.

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Wu, Jiang, Jianxing Ren, Weiguo Pan, Ping Lu, and Yongfeng Qi. "The Photocatalytic Removal of Mercury from Coal-Fired Flue Gas." In Energy and Environment Research in China, 103–40. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8750-9_6.

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Wang, Zhihua, Kefa Cen, Junhu Zhou, and Jianren Fan. "Principle of Multi-Pollutants Removal Technology in Flue Gas by Ozone." In Advanced Topics in Science and Technology in China, 31–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43514-4_2.

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Kunavin, A. T., A. V. Markov, D. V. Sapozhnikov, and V. Y. Yakovlev. "Intensification of E-Beam Processing of SO2 Removal From Flue Gas." In Non-Thermal Plasma Techniques for Pollution Control, 63–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78476-7_6.

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Abdul Rani, Noor Hidayu, Nor Fadilah Mohamad, Sharmeela Matali, and Sharifah Aishah Syed A. Kadir. "Mercury Removal in Simulated Flue Gas by Oil Palm EFB Activated Carbon." In ICGSCE 2014, 115–21. Singapore: Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-287-505-1_14.

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Guoxin, Lin. "A Discussion about Strategy of Flue Gas Dust Removal for Indian Coal Fired Boiler." In Electrostatic Precipitation, 509–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89251-9_101.

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Dong, Fang, Yan Liu, Xiao-long Li, Gui-li Liu, and Ting-an Zhang. "Experimental Study on Dust Removal Performance of Dynamic Wave Scrubber for Smelting Flue Gas." In Energy Technology 2021, 39–50. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65257-9_5.

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Hao, Wu, and Yang Linjun. "Removal of Fine Particles from Coal Combustion by Heterogeneous Condensational Enlargement in Wet Flue Gas Desulfurization." In Clean Coal Technology and Sustainable Development, 401–8. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2023-0_54.

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Centi, G., N. Passarini, S. Perathoner, and A. Riva. "Contemporaneous Removal of SO2and NO from Flue Gas Using a Regenerable Copper-on-Alumina Sorbent—Catalyst." In Environmental Catalysis, 233–49. Washington, DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/bk-1994-0552.ch019.

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Conference papers on the topic "Flue gas HCl removal"

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Kong, Yougen, and Jean-Pascal Balland. "Effective Removal of HCl and SO2 With Dry Injection of Sodium Bicarbonate or Trona." In 19th Annual North American Waste-to-Energy Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/nawtec19-5408.

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The newly promulgated EPA MACT rules for solid waste incinerators require HCl to be mitigated to extremely low concentrations. Most existing air pollution control systems will probably not be able to satisfy these very low limits. To meet the new challenges, dry injection of sodium bicarbonate or trona is a low-cost solution that can be applied in the following situations: (1) Replace existing acid gas mitigation systems; (2) Supplement existing systems; (3) Install where no acid gas mitigation systems exist yet. In a dry sorbent injection system, sodium bicarbonate or trona is injected directly into hot flue gas. After injection, the sorbent is calcined into porous activated sodium carbonate. Its high surface area enables fast gas-solid reactions between acid gases (mainly HCl and SO2) and Na2CO3 to form NaCl and Na2SO4 which are collected by either electrostatic precipitators (ESP) or fabric filters. The dry injection systems with sodium bicarbonate have shown over 99% removal of HCl and 95% removal of SO2 at over 150 Waste-To-Energy plants in Europe. This paper will describe the concept of dry sorbent injection system with sodium bicarbonate or trona, provide performance data from several plants, and describe system design guidelines.
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Kong, Yougen, and Heidi Davidson. "Dry Sorbent Injection of Sodium Sorbents for SO2, HCl and Mercury Mitigation." In 18th Annual North American Waste-to-Energy Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/nawtec18-3560.

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Solid waste incinerators emit air pollutants such as SO2, HCl, and mercury. Dry sorbent injection of sodium sorbents has emerged as an important SO2, HCl, and mercury mitigation technology due to its (a) low capital cost; (b) small installation foot print; (c) ease of operation; and (d) flexibility to fuel changes. In a dry sorbent injection system, trona or sodium bicarbonate is injected directly into hot flue gas. After injection, the sorbent is calcined into porous sodium carbonate that reacts with acid gases (SO2, HCl and SO3). This technology is able to achieve high removal rates for HCl (>99%) and SO2 (>90%), and has been implemented at many waste incinerators in Europe and coal-fired power plants in the United States. With the promulgation of MACT rules, this technology will be a low-cost and easy-to-use option for waste-to-energy boiler owners.
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Levy, Edward, Harun Bilirgen, Joshua Charles, and Mark Ness. "Use of Condensing Heat Exchangers in Coal-Fired Power Plants to Recover Flue Gas Moisture and Capture Air Toxics." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98261.

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Heat exchangers, which cool boiler flue gas to temperatures below the water vapor dew point, can be used to capture moisture from flue gas and reduce external water consumption for power plant operations. At the same time, thermal energy removed from the flue gas can be used to improve unit heat rate. Recent data also show that emissions of air toxics from flue gas would be reduced by use of condensing heat exchangers. This paper describes results from a slip stream test of a water cooled condensing heat exchanger system at a power plant with a lignite-fired boiler. The flue gas which flowed through the heat exchangers had been extracted from a duct downstream of the electrostatic precipitator. Measurements were made of flue gas and cooling water temperatures, flue gas water vapor concentrations, and concentrations of elemental and oxidized Hg at the inlet and exit of the heat exchanger system. Condensed water was also collected and analyzed for concentrations of H2SO4 and HCl. Results on the effects of the condensing heat exchanger operating conditions on oxidation and capture of Hg and on the capture of sulfuric and hydrochloric acids are described.
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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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Zhong, Zhaoping, Basheng Jin, Jixiang Lan, Changqing Dong, and Hongchang Zhou. "Experimental Study of Municipal Solid Waste (MSW) Incineration and Its Flue Gas Purification." In 17th International Conference on Fluidized Bed Combustion. ASMEDC, 2003. http://dx.doi.org/10.1115/fbc2003-011.

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This paper presents experimental study of fluidized absorption process for flue gas purification of co-combustion of municipal solid waste (MSW) and coal in a circulating fluidized bed Combustor (CFBC) test rig. The test rig is composed of a CFBC, coal/MSW feeding subsystem, ash cycle subsystem and flue gas purification subsystem. In the circulating fluidized bed, section area of fluidized bed is 230mm × 230mm and the freeboard is 460mm × 395mm. The total height of the test facility is 8m; height of bed and freeboard are 1.5m and 6m respectively. The preheated air enters the bed as primary air passing through distributor and provides oxygen for combustion. Six movable tubes immerged within the bed are used in adjusting the bed temperature. The cyclone separator is fixed up at the exit of chamber. The separated ashes return to chamber through the recycling feeder for decreasing the carbon content in fly ash and promoting the combustion efficiency. The flue gas from the exit of cyclone separator enters the air preheater to preheat the cold air at first, then enters the flue gas purification facility, finally be discharged into air by induced drafted fan passing through the stack. Coal is carried to a positive pressure feeding entrance by screw feeder and enters the bed. Secondary air is injected into a sealed end feeding pipe under MSW feeder, for enhancing the mixture in furnace, providing the oxygen for combustion and preventing from MSW remaining in the feeding pipe. The material of bed is silicon sand. Fluidized absorption facility for flue gas purification in MSW incineration is mainly composed of humidification system, absorption tower, flue gas reheater, fabric filter, slurry making pool, sediment pool and measurement subsystem. The temperature of flue gas from boiler by induced draft fan reduces to 120°C when flue gas enters the humidification region, which can increase the ability of acid gas absorption and prevent the slurry evaporation. When flue gas and limestone slurry enter the absorption tower, the three-phase material of gas, liquid and solid generates intense mixing and forms bubbling layer. The acid gases in flue gas are absorbed by limestone slurry, and a large amount of dusts are collected in reaction tank. Feeding oxidation air into slurry and agitating slurry simultaneously so as to promote the inner circulation of slurry and oxygenization of calcium sulphite. Flue gas passes through undulate demister which has high efficiency and low resistance, then enters fabric filter after reheating, finally be discharged into the stack by induced draft fan. The mixture of slurry and gypsum is emitted into the sediment pool through bottom and clear liquid in sediment pool returns to slurry making pool or absorption tower. The test results are as follows: the combustion efficiency is greater than 95%, the carbon content of fly ash is lower than 8%, and the loss of slag combustion is lower than 5%. When sorbent is limestone slurry, the concentration of slurry is 1%, the circulating ratio is 3, the jet rate is 5∼15m/s. The immerged depth of bubbling pipe under the slurry is 140mm. In the fluidized absorption facility for flue gas purification of MSW incineration, the desulfurization efficiency is >90%, the de-nitrification efficiency is 20∼30%, the de-chlorination efficiency is >80%, the removal efficiency of dust, heavy metal and dioxins are >99%, >98.6% and 99.35% respectively. After passing through fluidized absorption facility for flue gas purification of MSW incineration, when the concentration of O2 is 11%, the emission concentration of every components in flue gas are: SO2 is 20∼50mg/Nm3, NOx is 130∼270 mg/Nm3, HCl is 7∼12 mg/Nm3, HF is ∼8 mg/Nm3, CO2 is7∼8%, dust is 23∼67 mg/Nm3, Cr is 0.2172 mg/Nm3, Cu is 0.0454 mg/Nm3, Pb is 0.2963 mg/Nm3, Zn is 0.2074 mg/Nm3, Fe is 2.834 mg/Nm3, As is 1.112 × 10−3 mg/Nm3, Hg is 2.38 × 10−4 mg/Nm3 and dioxins is 0.1573 ng/Nm3. These emission concentrations are all lower than the Chinese emission standards. Some of them come close to the emission standards of developed country.
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Reissner, H. K., C. Brunner, and K. Ba¨rnthaler. "TURBOSORP®: Emission Limits After 17th BimSchV (German Federal Immission Act) at Lowest Costs in a Simple Dry Process — Comparison of Dry/Semi Dry Processes and Results of Mercury and Dioxin Separation in a One Step Process." In 11th North American Waste-to-Energy Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/nawtec11-1672.

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The TURBOSORP®-process is a dry flue gas cleaning process to remove certain pollutants like SO2, HCl, Hg, heavy metals, dioxins and furans. The main principle of this process is to bring flue gas in an intensive contact with Ca(OH)2, open hearth furnace coke, water and recirculated material in the Turboreactor. The Turboreactor operates as circulating fluidized bed in the manner of fast fluidisation. The gas/solid mixture leaves the Turboreactor at the top and the solids are separated in a fabric filter from the flue gas. More than 99% of the separated solids are recirculated to the Turboreactor and the rest leaves the process as product. Due to the high sorbent recirculation percentage a high sorbent utilization and low stoechiometric rates are reached in the TURBOSORP®-process. Due to the fact to have plants in operation for the spray absorption and for the TURBOSORP® process, a comparison definitely showed advantages for the TURBOSORP® process. Experiences of the plant start up of a TURBOSORP® plant in Poland concerning optimisation in pressure loss and hydrodynamics of the Turboreactor using CFD-Simulation are presented. Results concerning mercury and dioxin separation in our Turbosorp® pilot plant after the refuse incinerator MV Spittelau, Vienna, are discussed.
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Rainio, Aku, Vinod Sharma, Markus Bolha`r-Nordenkampf, Christian Brunner, Johannes Lind, and John Crosher. "Fluidized Bed Technologies for Biomass Combustion." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81052.

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Biomass, a renewable fuel source for generating energy, is available in large quantities in the USA. Typical biomass consists of wood chips, construction and demolition wood, bark, residual logging debris, saw dust, paper rejects, and paper and sewage sludge. Composition and moisture content of biomass vary greatly and affect its heating value. There are several combustion technologies available to generate power from biomass. Fluidized bed boilers are preferred, because of their ability to burn a wide variety of biomass fuels while achieving high combustion efficiency and low emissions. This paper discusses basic design and operation features of bubbling (BFB) and circulating fluidized bed (CFB) boilers, both offering high fuel flexibility. In fluidized bed combustion, reactive biomass fuels are almost completely burned out because of close contact between the hot bed material and the fuel. In advanced BFB and CFB boilers, an open bottom design is used for ash and coarse material removal through the fluidizing air distribution system. This allows combustion of fuels containing large inert particles, such as rocks and metal pieces. If limestone is added to the bed, SO2 emissions are reduced. By using ammonia or urea in high temperature areas, NOx emissions are reduced. In order to achieve very low emissions, back-end flue gas treatment for SO2, NOx, HCl, HF, and Hg is required. To treat flue gases, several technologies can be used — such as activated carbon and sodium bicarbonate or Trona injection, Turbosorp® circulating dry scrubber, and SCR. Normally the preferred particulate matter cleaning device is a baghouse since the filter cake allows further reactions between pollutants and sorbents. Different fluidized bed designs are shown and recommended for various biomass fuels. This paper describes design, fuels, and emissions for an advanced BFB boiler producing steam at a rate of 230,000 lb/hr/930 psig/860°F (29.0 kg/s/64 barg/460°C).
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QI, FENG, TINGYU ZHU, XIAOMIAO YAN, and YANGYANG GUO. "Study of dioxin removal from sintering flue gas." In Second International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2015. Institute of Research Engineers and Doctors, 2015. http://dx.doi.org/10.15224/978-1-63248-043-9-105.

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9

Lee, Shang-Hsiu, and Marco J. Castaldi. "The Effects of Varied Hydrogen Chloride Gas Concentrations on Corrosion Rates of Commercial Tube Alloys Under Simulated Environment of WTE Facilities." In 16th Annual North American Waste-to-Energy Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/nawtec16-1916.

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In order to clarify the effects of HCl concentrations on corrosion rates of commercial tubing in Waste-to-Energy (WTE) boilers, a corrosion test was made by altering the HCl concentration from 0 to 1000ppm, together with simulated flue gas composition. Three commercial tubing SA178A, SA213 T11 and NSSER-4 samples were investigated under a well controlled thermal gradient where the gas temperature was at 700°C and metal temperatures ranged from 480 to 580°C. The duration of each test was 100 hours. The posttest analyses included observations of surface morphology and elementary composition analysis of corrosion products by scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The corrosion rates were acquired by measuring the mass loss of samples after the test. The results showed that the addition of HCl to the flue gas increased the corrosion rates of test samples, but the relation between the HCl concentration and corrosion rate was not linear. The HCl effects on corrosion rates were more prominent when its concentration changed from 0 to 500ppm. In addition, the HCl effects were promoted by the increase of metal temperature in particular when metal temperature was over 560°C.
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He, An'En. "Experimental Study on Removal of Hg0 from Flue Gas by Spraying Desulphurization Wastewater into Flue." In 2017 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/icmmct-17.2017.152.

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Reports on the topic "Flue gas HCl removal"

1

Granite, Evan J., Richard A. Hargis, and Henry W. Pennline. Sorbents for mercury removal from flue gas. Office of Scientific and Technical Information (OSTI), January 1998. http://dx.doi.org/10.2172/1165.

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Lesch, David A. Carbon Dioxide Removal from Flue Gas Using Microporous Metal Organic Frameworks. Office of Scientific and Technical Information (OSTI), June 2010. http://dx.doi.org/10.2172/1003992.

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3

Kung, Harold, Mayfair Kung, J. J. Spivey, and Ben W. Jang. Novel technologies for SO{sub x}/NO{sub x} removal from flue gas. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/207582.

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Renk, J. B. III. Commercial demonstration of the NOXSO SO{sub 2}/NO{sub x} removal flue gas cleanup system. Office of Scientific and Technical Information (OSTI), June 1995. http://dx.doi.org/10.2172/108136.

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Winnick, J. Combined SO sub x /NO sub x removal and concentration from flue gas through an electrochemical membrane. Office of Scientific and Technical Information (OSTI), November 1989. http://dx.doi.org/10.2172/5103047.

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Winnick, J. (Combined SO sub x , NO sub x removal and concentration from flue gas through an electrochemical membrane). Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/7177183.

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Winnick, J. (Combined SO sub x , NO sub x removal and concentration from flue gas through an electrochemical membrane). Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6914103.

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Winnick, J. (Combined SO sub x , NO sub x removal and concentration from flue gas through an electrochemical membrane). Office of Scientific and Technical Information (OSTI), March 1988. http://dx.doi.org/10.2172/7014622.

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Winnick, J. (Combined SO sub x , NO sub x removal and concentration from flue gas through an electrochemical membrane). Office of Scientific and Technical Information (OSTI), March 1988. http://dx.doi.org/10.2172/7177152.

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Irvin, Nick, and Joseph Kowalczyk. Integrating Waste Heat from CO2 Removal and Coal-Fired Flue Gas to Increase Plant Efficiency. Office of Scientific and Technical Information (OSTI), April 2017. http://dx.doi.org/10.2172/1364780.

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