DCS选择性控制在液化气脱硫装置中的应用

Application of DCS Selective Control in LPG Desulfurizing Unit

摘要: 本文详细介绍了应用ＤＣＳ对液化气吸收塔的工艺参数实现选择性控制的原理和方案，以及现场仪表的选型和实施。介绍了ＲＳ３型装置级的ＤＣＳ系统，并应用ＲＳ３的ＡＣＴＩＯＮ语句，对含有优先权的约束条件进行了编程及如何应用组态方法建立选择性控制系统。

Abstract: The principle and scheme of selective control on process variables of LPG absorbing tower by use of DCS is explained in detail, including the selection and implementation of field instrument.