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一、概述在六十年代和七十年代初期建了一大批乙烯工厂,在当时技术上是先进的。但是,随着生产的发展,特别是对节省能源,提高效率等提出了更高的要求,以及所用的仪表老化,原有的控制系统已不能满足需要,因而世界各国的乙烯工厂都开始进行改造,如日本,西德,法国,捷克等国家。我国从60年代就开始引进乙烯装置。当时主要是4万吨,10万吨。七十年代我国引进了多套30万吨乙烯装置,1976年开始正式投产试车。多年
I. Overview A large number of ethylene plants were built in the 1960s and early 1970s and were technologically advanced at the time. However, with the development of production, especially the higher requirements on energy conservation and efficiency improvement, and the aging of the instrumentation used, the existing control system can no longer meet the needs. As a result, ethylene plants in other countries all over the world begin to be reformed , Such as Japan, West Germany, France, Czech Republic and other countries. Since the 1960s, China started to introduce ethylene plant. At that time it was mainly 40,000 tons and 100,000 tons. Seventies China introduced more than 300,000 tons of ethylene plant, 1976 formally put into trial operation. for many years