Study on desulfurization experiment in oxygen-enriched dry desulfurization of circulating fluidized bed with Hongshagang high sulfur coal
In order to expand the raw material sources for the first kiloton scale circulating fluidized bed pressurized coal gasification demonstration project in Lanshi Jinhua and solve the the problem of high desulfurization costs downstream when using high sulfur coal in Hongshagan,Limestone dry desulfurization test in high sulfur coal gasification furnace of Hongshagang No.2 Coal Mine in Minqin County,Wuwei City,Gansu Province was carried out on a new circulating fluidized bed enriched oxygen pilot test platform with a capacity of 5 t/d,and the desulfurization effect of coal gas was investigated under the working conditions of gasification temperature of 920-980 ℃ and calcium-sulfur molar ratio of 1∶1-1.5∶1.The results show thatthe desulfurization efficiency in the gasifier could reach 75.30％under the conditions of a temperature of 950 ℃,a calcium-sulfur ratio of 1∶1,and an enriched oxygen concentration of 35.46％,with a significant desulfurization effect,which could reduce the investment and operating costs of downstream desulfurization devices,and increase the comprehensive benefits.
Hongshagang high sulfur coaloxygen enriched gasificationdry desulfurization in furnace,calcium-sulfur ratio
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