克劳斯法硫磺回收控制系统的设计与实现

Design and Implementation of Proportional Control System in Claus Sulfur Recovery

关键词:  硫磺回收  H₂S与O₂比值  分数阶PID  双自由度

Key Words:sulfur recovery  H₂S and O₂ ratio  fractional order PID  double degree of freedom

摘要:针对克劳斯法硫磺回收反应炉内H₂S与O₂比例控制的非线性和大时滞等问题，本设计提出了一种分数阶PID控制器的双自由度Smith预估控制系统算法策略。通过分析克劳斯法硫磺回收工艺，设计出H₂S与O₂比值控制系统中的设定值跟踪控制器、干扰衰减控制器双控制器。系统运行调试结果表明，与传统PID控制器相比，本设计控制的H₂S与O₂比值设定值跟踪响应速度快，振荡小，稳定性好，减小了定量偏差，可有效克服系统的大时滞、非线性等问题。

Abstract:In order to solve the problem of nonlinear and large time delay of H₂S and O₂ proportional control in Claus sulfur recovery reaction furnace， this paper presented a dual degree of freedom Smith predictor algorithm of fractional order PID controller.Through the analysis of Claus sulfur recovery process，double controller set point tracking controller and disturbance attenuation controller of H₂S and O₂ratio control system was designed. Compared to traditional PID controller， the system debugging results showed that: H₂S and O₂ ratio of the algorithm control set point tracking response faster， with small vibration， good stability， and less the quantitative deviation， could effectively overcome the time delay， nonlinear problems．