Dry FGD process is simple with low investment costs, but in comparison with wet FGD and semi-dry FGD,the dry FGD efifciency is lower, and SO2 emissions fal short of the national emission standards. So, it is dififcult to promote dry FGD. This paper introduces a method to improve the efifciency of desulfurization by using special reaction additives.%干法脱硫工艺简单、投资少，但与湿法脱硫和半干法脱硫相比，脱硫效率较低，SO2的排放浓度达不到国家排放标准，因此在各个行业的烟气脱硫中难以推广。文章介绍了一种用特殊反应助剂提高脱硫效率的方法。
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