甲醇合成过程控制的算法设计

分析了甲醇合成机理,得出以煤气联产甲醇具有系统滞后大,动态特性复杂且存在大干扰的特点,为了增加甲醇产量和降低能耗,并提高系统的控制能力,增强系统的灵活性和可靠性.引入链系统控制方法,以甲醇合成回路经济效益最大,单位甲醇能耗最低为控制目标,找到影响甲醇单耗和产量的主要因素,建立有产量和能耗两条主要因果链组成的互相关联的链系统模型.设计了甲醇合成过程的链预估算法和链控制系统.仿真显示为甲醇合成系统建立的链系统模型稳定性和抗干扰能力强,容错性好,控制精确.有很好的应用前景和市场潜力.

Algorithm Design of Process Control in Methanol Synthesis

The mechanism of methanol synthesis is analyzed.It can be found that the system of methanol gas cogeneration has large delay, complex dynamic characteristics and large disturbance.In order to increase methanol output and reduce energy consumption and improve the ability to control and enhance the flexibility and reliability,a chain control algorithm is introduced.The algorithm takes the most economic benefit of synthesis circuit and the minimum energy consumption of unit methanol as the control target,and f...