大庆石化 4 8万ｔ乙烯改扩建工程日前通过国家有关部门的技术成果鉴定 ,并授予该项工程为“九五”国家技术改造优秀项目奖。大庆乙烯工程是我国 2 0世纪 80年代初引进的四大 30万ｔ乙烯项目之一。于 1986年相继建成投产。投产后 ,先后进行了两次改扩建 ,第一次改扩建使乙烯的年 Daqing Petrochemical’s 48,000t ethylene renovation and expansion project passed the appraisal of the technical achievements of the relevant national authorities recently, and awarded this project the “Ninth Five-Year Plan” national technological transformation outstanding project award. Daqing ethylene project is one of the four 300,000t ethylene projects introduced in China in the early 1980s. In 1986, it was completed and put into production. After it was put into production, it has undergone two reforms and expansions. The first time it was rebuilt and expanded to make ethylene