用DCS实现可逆式换热器与分子筛的程序控制

THE ACHIEVEMENT OF SEQUENCE CONTROLLING OF THE CONTRARLABLE HEAT EXCHANGER & THE MOLECULAR SIEVE USING DCS

对渣油型氨厂２套程控系统存在的问题进行了探讨，介绍了对原控制系统改造过程中ＤＣＳ硬件布置。

This paper inquires into the problems existing in the two outmoded sequence control system of the residuum type ammonia plant and presents DCS hardware configuration,programming and method of testing in the reforming of the outmoded sequence control system.