Method for improving quality of ethephon byproduct dichloroethane

The invention relates to the technical field of ethephon treatment, in particular to a method for improving the quality of ethephon byproduct dichloroethane, which comprises the following steps: cryogenic cooling tail gas in ethephon production to obtain dichloroethane-containing condensate; rectifying the condensate to obtain crude dichloroethane; sequentially neutralizing, washing, drying, rectifying and removing impurities from the crude product dichloroethane to obtain a target product, and detecting the impurity content in the target product, whether the impurity content exceeds a preset range or not is judged, if the impurity content exceeds the preset range, the target product is subjected to impurity removal again, if the impurity content is within the preset range, the target product is qualified, and the quality content of the target product is improved. The problem that dichloroethane prepared by an existing preparation method is poor in quality is solved. 本发明涉及乙烯利处理技术领域，具体涉及一种提升乙烯利副产品二氯乙烷品质的方法，包括将