coal desulfurization process
Desulfurization of Coal - EOLSS
2017-1-16 · In coal combustion, to generate electric power and process heat, the sulfur is emitted as SO2, which is seen as one of the main causes of acid rain. This effect has led to an interest in the three main methods of removing coal sulfur: coal cleaning, in-bed desulfurization, and flue gas desulfurization. Coal cleaning includes physical, chemical,
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Process for coal desulfurization - ZAVITSANOS; PETER D.
A process for desulfurization of carbonaceous aggregates as recited in calim 4 further comprising: (a) generating thermal energy from said microwave energy to desulfurize coal at a rate of about 0.3 - 1% of a heating value of said coal, wherein said generated energy liberates said sulfur with little loss of said heating value of said coal. 6.
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A coal desulfurization process via sodium metaborate ...
A preliminary study was conducted on the coal desulfurization process via NaBO 2 electroreduction with pulse voltage using a boron-doped diamond (BDD) thin film electrode. It has been proved that NaBO 2 was converted into NaBH 4 by 11 B NMR. The factors that influence the conversion rate of NaBO 2 into NaBH 4 and coal desulfurization efficiency were investigated.
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Coal Desulfurization by Solvent Leaching Methods
2011-4-29 · Coal desulfurization prior to usage is a preprocessing in order to achieve clean fuel and reduce ... from coal. The Meyers process uses P-cresol as a chemical solvent to reduce organic sulfur [14]. It used 3 h leaching with P-cresol at 100 °C to achieve 47% (average) organic sulfur removal for Indiana ...
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COAL DESULFURIZATION: - chem.mtu.edu
2012-3-22 · This book was written to provide a comprehensive survey of the current state of the art in coal preparation, with particular emphasis on coal desulfurization. Such a book has not been available since Robert Meyers wrote
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Fluidized Bed Coal Desulfurization - NASA
2020-8-6 · of coal desulfurization in a gas fluidized bed reactor as compared to the chlorinolysis process employing coal-water slurries. Results of the studies indicate that: (1)the two coals studied could be. desulfurized to approximately the same levels achieved in the chlorinolysis. process by reacting dry coal in a sequential manner with chlorine ...
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Coal Desulfurization via Different Methods: Energy Sources ...
2010-6-24 · Coal before utilization is subjected to some physical, chemical and biological desulfurization methods. However, physical and biological methods are ineffective and time consuming and they can be applied only on the bench scale. Most of the effective coal desulfurization techniques are based on chemical methods.
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Desulfurization Process of High-Sulfur Coal by Full ...
The coal sample from the Shijiazhai mine located in the east of Yunnan province of China, is characterized with high ash and sulfur content which are 64.90% and 8.66% respectively. Analysis results indicate that coal and pyrite are the valuable minerals that can be recycled from the crude ore. According to the properties of the ore, a full-flotation flowsheet is proposed to
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Microwave Applied in Coal Desulfurization Process ...
In this paper, the desulfurization of Fangshan coal was carried out by tetrachloroethylene extraction under ultrasonic and microwave irradiation. The GC-MS analysis of the tetrachloroethylene extraction reveals that organic sulfur in coal can be removed by tetrachloroethylene extract under ultrasonic and microwave irradiation. It is found that
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Desulfurization - an overview | ScienceDirect Topics
Desulfurization. Sulfur removal can be carried out before the reformer, after the reformer, or in both locations and can be integrated in a compact fuel system in many different ways depending on the sulfur tolerance of the reforming catalysts and fuel cells. From: Fuel Cells: Technologies for Fuel Processing, 2011.
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Desulfurization of coal - ETHYL CORPORATION
A process is disclosed for desulfurization of coal which comprises: digesting, in a digestion zone, coal and a Group IA or IIA metal oxide or mixtures thereof in the presence of a fused metal chloride salt medium, which medium is capable of dissolving sulfur-containing organic compounds present in the coal and which has a melting point below the digestion temperature; passing
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COAL DESULFURIZATION: - chem.mtu.edu
2012-3-22 · This book was written to provide a comprehensive survey of the current state of the art in coal preparation, with particular emphasis on coal desulfurization. Such a book has not been available since Robert Meyers wrote
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Fluidized Bed Coal Desulfurization - NASA
2020-8-6 · of coal desulfurization in a gas fluidized bed reactor as compared to the chlorinolysis process employing coal-water slurries. Results of the studies indicate that: (1)the two coals studied could be. desulfurized to approximately the same levels achieved in the chlorinolysis. process by reacting dry coal in a sequential manner with chlorine ...
Read More
Desulfurization Process of High-Sulfur Coal by Full ...
The coal sample from the Shijiazhai mine located in the east of Yunnan province of China, is characterized with high ash and sulfur content which are 64.90% and 8.66% respectively. Analysis results indicate that coal and pyrite are the valuable minerals that can be recycled from the crude ore. According to the properties of the ore, a full-flotation flowsheet is proposed to
Read More
Microwave Applied in Coal Desulfurization Process ...
In this paper, the desulfurization of Fangshan coal was carried out by tetrachloroethylene extraction under ultrasonic and microwave irradiation. The GC-MS analysis of the tetrachloroethylene extraction reveals that organic sulfur in coal can be removed by tetrachloroethylene extract under ultrasonic and microwave irradiation. It is found that
Read More
THE LAMBDA PROCESS - FOR DESULFURIZATION OF
2019-9-15 · THE LAMBDA PROCESS - FOR DESULFURIZATION OF SLURRY COAL FINES PRIOR TO COMBUSTION by Jo Davison - Research Director Lambda Group, incorporated. 1445 Summit Street Columbus, Ohio 43201 for the Eighth Annual Surface Mine Drainage Task Force Symposium April 7-8, 1987 Ramada Inn, Morgantown, West Virginia Introduction
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Flue-Gas Desulphurization - an overview | ScienceDirect
Nicholas P. Cheremisinoff, in Clean Electricity Through Advanced Coal Technologies, 2012 2.5 Flue-Gas Desulfurization Material. Flue-gas desulfurization (FGD) material is a product of a process typically used for reducing SO 2 emissions from the exhaust gas system of a coal-fired boiler. The physical nature of these materials varies from a wet sludge to a dry, powdered
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Coal desulfurization and demineralization by chemical ...
2020-10-13 · Coal desulfurization and demineralization by chemical/physical treatments Chen-Wen Fan Iowa State University Follow this and additional works at:https://lib.dr.iastate.edu/rtd ... In this process, the coal is first leached with a dilute sodium carbonate solution under
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The Flue Gas Desulfurization Process: Staying ELG ...
The Flue-Gas Desulfurization (FGD) process utilizes a set of technologies to remove sulfur dioxide (SO 2) from the flue gas emissions of coal-fired power plants.FGD systems were developed as a response to the exhaust – flue gases – from fossil fuel-burning plants, principally coal-burning, that posed both an environmental and human health hazard.
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Carbonization of Coal - EOLSS
2017-1-16 · COAL, OIL SHALE, NATURAL BITUMEN, HEAVY OIL AND PEAT – Vol. I - Carbonization of Coal - Dexiang Zhang ©Encyclopedia of Life Support Systems (EOLSS) 1. Introduction Carbonization of coal, thermal decomposition of coals in the absence of air, represents one of the largest utilizations of coal, and is an essential process for production of a
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COAL DESULFURIZATION: - chem.mtu.edu
2012-3-22 · This book was written to provide a comprehensive survey of the current state of the art in coal preparation, with particular emphasis on coal desulfurization. Such a book has not been available since Robert Meyers wrote
Read More
Fluidized Bed Coal Desulfurization - NASA
2020-8-6 · of coal desulfurization in a gas fluidized bed reactor as compared to the chlorinolysis process employing coal-water slurries. Results of the studies indicate that: (1)the two coals studied could be. desulfurized to approximately the same levels achieved in the chlorinolysis. process by reacting dry coal in a sequential manner with chlorine ...
Read More
Desulfurization Process of High-Sulfur Coal by Full ...
The coal sample from the Shijiazhai mine located in the east of Yunnan province of China, is characterized with high ash and sulfur content which are 64.90% and 8.66% respectively. Analysis results indicate that coal and pyrite are the valuable minerals that can be recycled from the crude ore. According to the properties of the ore, a full-flotation flowsheet is proposed to
Read More
THE LAMBDA PROCESS - FOR DESULFURIZATION OF
2019-9-15 · THE LAMBDA PROCESS - FOR DESULFURIZATION OF SLURRY COAL FINES PRIOR TO COMBUSTION by Jo Davison - Research Director Lambda Group, incorporated. 1445 Summit Street Columbus, Ohio 43201 for the Eighth Annual Surface Mine Drainage Task Force Symposium April 7-8, 1987 Ramada Inn, Morgantown, West Virginia Introduction
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Microorganisms in Coal Desulfurization (Review) |
2020-9-22 · The desulfurization process took place at a pH of 3–5, the coal-particle size was 75–45 μm, the pulp density was 5%, the temperature was 35°C, and the incubation time was 8 h. Chemical studies also revealed a decrease in the ash content and an increase in the calorific value of coal from 6219 cal/g to 6406 and 6315 cal/g, which indicated ...
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Progress of the technique of coal microwave desulfurization
2014-8-15 · In 1978, Kirkbride ( 1978) proposed a desulfurization process: the raw coal will be properly pulverized, dried to remove free water, mixed with hydrogen and then treated by microwave radiation. H 2 reacts with S, N and O in coal producing H 2 S, NH 3 and water vapor thus achieving the purpose of desulfurization.
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Coal desulfurization and demineralization by chemical ...
2020-10-13 · Coal desulfurization and demineralization by chemical/physical treatments Chen-Wen Fan Iowa State University Follow this and additional works at:https://lib.dr.iastate.edu/rtd ... In this process, the coal is first leached with a dilute sodium carbonate solution under
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Cost and Benefit Analysis of Desulfurization System in ...
2017-10-17 · In desulfurization process, the SO2 formed during coal burning can be absorbed by the lime slurry and turn into CaSO 3 and CaSO 4 .The sulfur in coal burning composition includes TELKOMNIKA ISSN: 1693-6930
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Carbonization of Coal - EOLSS
2017-1-16 · COAL, OIL SHALE, NATURAL BITUMEN, HEAVY OIL AND PEAT – Vol. I - Carbonization of Coal - Dexiang Zhang ©Encyclopedia of Life Support Systems (EOLSS) 1. Introduction Carbonization of coal, thermal decomposition of coals in the absence of air, represents one of the largest utilizations of coal, and is an essential process for production of a
Read More
Evaluation of Process Parameters of Coal Desulfurization ...
2014-3-24 · (2014) Evaluation of Process P arameters of Coal Desulfurization in Presence of H 2 O 2 and Complexing Agents, International Journal of Coal Preparation and Utilization, 34:2, 85-97, DOI: 10.1080 ...
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