中国石化上海石化股份有限公司炼油化工部的700kt/a乙烯装置自2002年4月建成投运以来,节能降耗工作取得成效。 在乙烯装置改扩建时,上海石化与四川天一公司共同开发了催化裂化于气回收乙烯技术,并于2001年10月开始工程施工,2002年3月成功投运。催化裂化干气回收装置的项目收益主要来自产品气与原料气之间的差价。若按差价为1 500元/t计算,每年收益约840万元人民币,扣除 Sinopec Shanghai Petrochemical Co., Ltd. Refining and Chemicals 700kt / a ethylene plant since April 2002 has been completed and put into operation, energy saving work achieved results. During the revamping of ethylene plant, Shanghai Petrochemical Co., Ltd. and Sichuan Tianyi Co., Ltd. jointly developed the catalytic cracking and ethylene recovery technology for gas recovery. Construction began in October 2001 and was successfully put into operation in March 2002. The project revenue from the catalytic cracking gas recovery unit mainly comes from the difference between the product gas and the feed gas. If the difference is 1,500 yuan / t basis, the annual revenue of about 840 million yuan, deducted