Abstract:

This paper introduces the HPF ammonia desulfurization unit for COG.The reasons which caused the excess of the H2S in the HPF ammonia desulfurization unit are the high sulfur content of the mixed coal and the high temperature of the desulfurization unit.The H2S content in the COG after the HPF ammonia desulfurization unit can be decreased to about 100 mg/Nm3 by adding a cooler for the desulfurization liquid without changing the coal blending ratio, which obtains good results.