用DCS功能模块实现流量测量的温压补偿及AN装置联锁

Realizing Temperature and Pressure Compensation in Flow Measurement and AN Unit Interlock with DCS Functional Modules

以CENTUM CS3000系统为例,介绍了运用DCS的功能模块实现用温压补偿法精确测量气体流量的原理。丙烯腈装置原料丙烯流量精确测量实例验证了该方法的可行性。介绍了丙烯腈装置通过改造DCS提高安全联锁的可靠性的改造实例。

Usingthe CENTUM CS3000 system as an example,this paper describes how DCS modules are used to realize temperature and pressure compensation to precisely measure gas flows.The feasibility of this method is demonstrated by a case study of precise measurement of propylene flows for an acrylonitrile unit. The article also presents a case study in which the reliability of safe interlock of an acrylonitrile unit was improved by means of the upgrade of DCS.