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首页> 美国政府科技报告 >Development of Disposable Sorbents for Chloride Removal from High-Temperature Coal-Derived Gases
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Development of Disposable Sorbents for Chloride Removal from High-Temperature Coal-Derived Gases

机译：高温煤源气体去除氯化物的一次性吸附剂的研制

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The integrated coal-gasification combined-cycle approach is an efficient process for producing electric power from coal by gasification, followed by high-temperature removal of gaseous impurities, then electricity generation by gas turbines. Alternatively, molten carbonate fuel cells (MCFC) may be used instead of gas turbine generators. The coal gas must be treated to remove impurities such as hydrogen chloride (HCl), a reactive, corrosive, and toxic gas, which is produced during gasification from chloride species in the coal. HCl vapor must be removed to meet environmental regulations, to protect power generation equipments such as fuel cells or gas turbines, and to minimize deterioration of hot coal gas desulfurization sorbents. The objectives of this study are to: (1) investigate methods to fabricate reactive sorbent pellets or granules that are capable of reducing HCl vapor in high-temperature coal gas streams to less than 1 ppm in the temperature range 400(degrees)C to 650(degrees)C and the pressure range 1 to 20 atm; (2) testing their suitability in bench-scale fixed- or fluidized-bed reactors; (3) testing a superior sorbent in a circulating fluidized-bed reactor using a gas stream from an operating coal gasifier; and (4) updating the economics of high temperature HCl removal.

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