Desulfurization of coal: the microbial solution
Pollution from coal combustion is the largest problem inthe current for microbial attack. Developing a. useof coal and the biggest constraint onthe increased u of coal. process that removes its organic. Sulfurous emi sions from the combustion of coal are cited asthe sulfur yet maintains the fuel value. leading contributor to acid rain.
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Desulfurization of Coal | Science
Coal combustion is the largest single source of sulfur oxide pollution. Treatment of some major representative U.S. coals with aqueous ferric solution removes 40 to 75 percent of the sulfur content through near quantitative oxidation of the pyritic sulfur contained in the coal matrix. Elemental sulfur and iron sulfate are recovered as products ...
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Flue gas desulphurization | PPT
The most common FGD technology uses a limestone/gypsum wet-process. Currently in India, only 1% of coal-fired power plant capacity has installed the mandatory flue gas desulfurization equipment to control toxic sulfur dioxide emissions, despite an estimated investment requirement of over 80,000 crore rupees.
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Operation analysis and its performance optimizations of the …
1. Introduction. Nowadays, the wet flue gas desulfurization (WFGD) system has been appreciated by many commercial companies due to the fact that it can purify the flue gas with high SO 2 removal efficiency, simple structure, and low costs [1].In the WFGD system, horizontal flue gases interact with vertical slurry generated by sprayers or bubble …
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Desulfurization of coal: the microbial solution
Firstly, the market for coal would expand because burning desulfurized coal would not necessitate flue gas scrubbers or other desulfurization equipment that is currently impractical or too expensive for users of small to intermediate volumes of coal. Secondly, coal users would have no sulfur wastes to dispose of.
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Review on the ionic liquids affecting the desulfurization of coal …
As shown in Table 1, the desulfurization of coal with low concentrations of sulfuric acid, hydrochloric acid and alkali was accomplished by the chemical reaction of some simple acids, alkali and oxides (such as calcium oxide and other metal oxides).Inorganic sulfur and a small part of organic sulfur were removed by this method; …
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Preparation and desulfurization performance of …
Mesoporous LaMeO x /SBA-15 (Me = Zn, Co and Fe) with high desulfurization ability were prepared by sol–gel method for the removal of H 2 S in hot coal gas. The BET, HRTEM and XRD results revealed that the hexagonal arrangement of SBA-15 frameworks was not destroyed and the metal oxides loaded on SBA-15 can …
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(PDF) Desulfurization and Denitrification …
Keywords: flue gas, desulfurization, denitri cation, adsorption, coal *e-mail: chenggan464@126 DOI: 10.15244/pjoes/75959 ONLINE PUBLICATION D ATE: 20 18-01 -1 0
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Flue Gas Desulfurization (FGD)
Reagent Preparation System. The reagent preparation system of flue gas desulfurization (FGD) includes a Wet ball mill and cyclone classifiers which produce a finely ground limestone slurry at 90% solids passing through 325 mesh. One mill slurry tank and one slurry pump is supplied for one wet ball mill. The mill slurry pump will send …
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Numerical simulation of particle erosion coupled with flue …
1. Introduction. Coal still occupies a leading position in China's energy consumption [1], [2], and the resulting SO 2 is exceptionally harmful to the environment [3], [4], [5].Therefore, it is imperative to control SO 2 emissions and reduce air pollution. The semi-dry flue gas desulfurization process is widely used in production due to low …
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ECONOMIC EVALUATION OF A COAL DECHLORINATION …
The Center of Research on Sulfur in Coal (CRSC) has authorized Sargent & Lundy to perform a conceptual design and economic evaluation study of a coal dechlorination plant. ... Reducing the chlorine 1evels would also simplify the design and operation of wet flue gas desulfurization equipment and reduce the corrosion rates in such equipment. The ...
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Mapping the knowledge domain of microbial desulfurization …
At present, the desulfurization technology is divided into pre-treatment, in-use treatment, and post-treatment. In-use treatment, in the case of coal, is generally defined as the spraying of desulfurizer into the coal-burning boiler, which is capable of converting SO 2 and SO 3 emissions from coal combustion into sulfites or sulfates (Lu et …
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Comprehensive evaluation of flue gas desulfurization …
Water-soluble ions . Flue gas . Desulfurization . Denitrification . Technology evaluation .Uncertainanalysis Introduction Since the "Eleventh Five-Year Plan" period, the construction of flue gas desulfurization and denitrification facilities for coal-fired power plants have been accelerated to control the emissions of sulfur dioxide (SO
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Ultrasound-electrochemistry enhanced flotation and desulphurization …
Most studies on coal flotation desulfurization are either focused on the effect of ultrasonic treatment alone or electrochemical method, but there are few studies on the ultrasound-electrochemistry enhanced method. ... Coal samples, reagents, and equipment. The main coal quality indexes of the test coal samples are shown in Table 1. After ...
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Technologies for biogas desulfurization
The presence of acid gases like hydrogen sulfide (H 2 S) in natural gas, refinery gas, and coal gas necessitates their removal from the gas stream to prevent corrosion of pipelines and production equipment and to ensure safety due to the toxic nature of H 2 S. A study was conducted to synthesize an adsorbent that is made from …
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Solar-assisted combined cooling and power system
Solar-assisted combined cooling and power system integrating energy storage and desulfurization for coal-fired power plants. Author links open overlay panel Zixiang Su a, Liu Yang a, Hao Wang a, Shenghui Liu a, Jianzhong Song b ... thanks to an increase in power is accompanied by the improvement of the system scale and equipment …
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Advances on resource utilization of semi-dry desulfurization …
It is worth noting that the implementation of desulfurization technology in coal-fired power plants and the steel industry has contributed to SO 2 emissions in 2021 accounting for 12.97% of ... primarily due to its high raw material cost and expensive equipment investment. In contrast, solid-phase reducing agents such as coke, graphitic …
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Experimental investigation of the desulfurization of a high sulfur coal
Coal desulfurization is imperative to produce clean coal and reduce the emission of harmful gas during combustion. However, organic multi-ring sulfurous in coal is more difficult to remove than inorganic sulfur. Therefore, in this paper, two desulfurization methods, traditional oxidation desulfurization method nitric acid leaching (NAL) and ...
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Migration behavior of chlorine and sulfur during gasification …
The in-furnace desulfurization can be performed by adding limestone desulfurizer, gasification technology, and coal water slurry technology [[157], [158], [159]]. The flue gas desulfurization is split into wet, semi-dry and dry methods. The wet desulfurization can remove SO 2 by absorbing it with
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Influence of flue gas cleaning system on characteristics of PM
This study investigated the influence of precipitators and wet flue gas desulfurization equipment on characteristics of PM2.5 emission from coal-fired power stations. We measured size distribution and removal efficiencies, including hybrid electrostatic precipitator/bag filters (ESP/BAGs) which have rarely been studied. A …
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Desulfurization Dust Seperator-Dongding Drying Equipment
3. Mature technology, high reliability of equipment operation, good adaptability to coal, especially suitable for high sulfur coal. 4. Compact equipment design, small land area, using advanced technology and dehydration technology to prevent a fan with water, apply to any of the sulfur coal flue gas desulfurization. 5.
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(PDF) Selection of typical wet desulfurization system and economic
and the influence of desulfurization m aterials, operation of equipment, coal quality and etc. on energy consumption and cost are discussed in depth. Zhou et al. [9] carried out the on-the-spot ...
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Modeling based on machine learning to investigate flue gas …
Flue gas desulfurization (FGD) is a critical process for reducing sulfur dioxide (SO2) emissions from industrial sources, particularly power plants. ... coal preparation 7, low-sulfur fuels 8 ...
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(PDF) Desulfurization of coal using the electrochemical technique …
Desulfurization methods have been extensively investigated to produce. clean fuel from coal. However, most methods remove either inorganic or. organic sulfur. To further remove the total sulfur ...
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Desulfurization of heavy oil | Applied Petrochemical …
Strategies for heavy oil desulfurization were evaluated by reviewing desulfurization literature and critically assessing the viability of the various methods for heavy oil. The desulfurization methods including variations thereon that are discussed include hydrodesulfurization, extractive desulfurization, oxidative desulfurization, …
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Flue gas desulfurization
For a typical conventional coal-fired power plant, FGD technology will remove up to 99 percent of the SO 2 in the flue gases. History Methods for removing sulfur dioxide (SO 2) from flue gases have been studied for over 150 years. Early concepts useful for flue gas desulfurization appear to have germinated in 1850 in England.
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Biological desulfurization of biogas: A comprehensive …
Hydrogen sulphide (H 2 S) removal from biogas is of high relevance as it damages combustion engines used for heat and power generation and causes adverse public health and environmental effects. Biological processes have been reported as a cost-effective and promising approach to desulfurize biogas. This review presents a detailed …
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Corrosion evaluation of one wet desulfurization equipment …
In order to reduce the emission of acid gas (such as SO 2 ) and strengthen the environmental protection, FGD devices have become the basic equipment of coal-fired power plants [1, 2]. The ...
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Processes | Free Full-Text | Method of Desulfurization …
The planned expansion of biogas desulfurization equipment is 96,000 − 50,000 m 3 /d = 46,000 m 3 /d. ... into operation according to the "Measures for the Operation and Management of Desulfurization Electricity Prices and Desulfurization Facilities for Coal-fired Generating Units (Trial)", taking into account the initial …
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Coal
Coal basics Coal takes millions of years to form. Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is classified as a nonrenewable energy source because it takes millions of years to form. ... Power plants use flue gas desulfurization equipment, also known as scrubbers, to clean ...
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