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.
出处
《现代化工》
CAS
CSCD
北大核心
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)
关键词
合成氨
氧含量
大时滞系统
安全
自动控制
synthetic ammonia
oxygen content
large-time-delay system
safety
automatic control
