Method for separating halogenated olefin impurities from 2-chloro-1,1,1,2-tetrafluoropropane

The invention relates to a method for separating halogenated olefin impurities from 2-chloro-1,1,1,2-tetrafluoropropane. The method comprises the following steps: adding the 2-chloro-1,1,1,2-tetrafluoropropane containing the halogenated olefin impurities into an adsorbent and absorbing halogenated olefins; the solid adsorbent is a copper-modified high-silicon ZSM-5 molecular sieve adsorbent. The absorption method adopted by the invention has the advantages that the saturated adsorption quantity is large, the adsorption quantity of the adsorbent for the halogenated olefins reaches 0.8, the content of HCFO-1233xf in absorbed HCFC-244bb is less than 700 ppm, the purity of the HCFC-244bb reaches above 99.6 percent, and the like. In addition, the adsorbent adopted by the invention has the advantage of HF resistance and is suitable for industrial production equipment. 本发明涉及种从2-氯-1,1,1,2-四氟丙烷中分离卤代烯烃杂质的方法，将含有卤代烯烃杂质的2-氯-1,1,1,2-四氟丙烷加入到吸附剂中，对卤代烯烃进行吸附；所述的固体吸附剂为铜改性的高硅ZSM-5分子筛吸附剂。本发明采用的吸附法具有饱和吸附量大、吸附剂对卤代烯烃的吸附量达到0.8，吸附后的HC