合成氨生产中氧含量控制系统的改进  

Advanced oxygen control system for production of synthetic ammonia

作　　者：韩学政[1] 王承信 杨中国[1] 李帅[1] 

机构地区：[1]枣庄学院物理与电子工程系,山东枣庄277160 [2]枣庄市普利化工有限公司,山东枣庄277160

出　　处：《现代化工》2011年第5期86-87,96,共3页Modern Chemical Industry

基　　金：枣庄市安全检查监管专项(F122009-001-0067)

摘　　要：介绍了合成氨生产中氧含量控制的一种控制方案。氧含量控制系统是一个大时滞系统,大时滞系统的控制问题是过程控制中的难题,本方案采取转移取样点位置的方法来解决这一难题,把合成氨生产中氧含量的取样点移至洗气塔气体出口。改进后时滞在5 s以内,有效地解决了氧含量监测控制的时滞过长的问题。A control system for the oxygen control in the production of synthetic ammonia is introduced. Oxygen control system is a large-scale-time-delay system which is quite difficult to be controlled. Transferring the position of sampling points to the outlet of the scrubber tower is used to control the oxygen content in the production of synthetic ammonia in this paper. The time delay of the advanced oxygen control system is less than 5 seconds ,which can effectively control the oxygen content and solve the problems related to the large time delay.

关 键 词：合成氨 氧含量 大时滞系统 安全 自动控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]