Extraction dechlorination has a good prospect due to its advantages of low cost and comprehensive utilization of by-products. At present

extraction dechlorination has been applied in metallurgy

petrochemical industry and other fields

where organic amines are the main extractants used. The key of extraction dechlorination lies in the utilization of extractant and the regeneration efficiency of extractant. This article regards the desulfurization wastewater in wet desulfurization(FGD) process in coal-fired power plants as the research object

achieves effective removal of high concentration of chloride ion in the desulfurization wastewater through effective approaches such as screening of effective extractant formula

extraction process of dechlorination of procedural control

regeneration of the extraction agent

and comprehensive utilization of by-products.