介绍了一种催化裂化干气中乙烯回收利用的新途径。该技术在扬州石化有限责任公司工业应用后，取得了较好的经济效益。实际运行数据表明，干气中乙烯的转化率达到95．41％以上，目的产品汽油的硫质量分数仅为6！g∕g、研究法辛烷值高达114，是较好的汽油调合组分。该技术的不足之处是汽油选择性偏低，仅为37．64％。此外，针对目前装置运行状况，提出了改进催化剂性能等建议。%A novel process was introduced about ethylene recovery from FCC dry gas. The commer﹣cial application in Yangzhou Petrochemical Co. Ltd. ,SINOPEC was disclosed. The results show that the conversion of ethylene is over 95. 41%. The sulfur in gasoline fraction is about 6 !g∕g and RON is as high as 114. The deficiency of this technology is that the gasoline selectivity is on the low side,only a﹣bout 37. 64%. In view of the present operation status,some proposals for improving the performance of catalyst are suggested.
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