This paper analyzed the revamping of ethylene plants in YAN-SHAN Petro-chemical Inc.and that abroad,the economic scale and the ways of re-vamping in ethylene plant are also discussed.

• 本文分析了国外以及燕山石化公司乙烯装置的技术改造，论述了乙烯装置改造的经济规模及其途径。