放射性废液蒸发处理中pH值的在线监测与控制

Online pH Monitoring and Control of Radioactive Waste Liquid in Evaporation Treatment System

采用具有前馈和反馈作用的分时分段复合控制方法,实现放射性废液蒸发处理系统上料废液pH值的在线监测和自动控制。介绍该系统的构成和工作方法,以及与pH值相关的控制算法。该复合控制方法可以有效地减少废液pH值控制特性非线性以及滞后的影响,较好地实现对放射性废液蒸发处理系统上料废液pH值的调节。

A compound control method which has different control algorithms at different slice time or different condition is adopted to solve the problem of pH monitoring and automatic control of radioactive waste liquid in an evaporation treatment system. Both the feed forward and backward functions are utilized in the method. The architecture and work manner of the pH monitor and automatic adjustment system is introduced, as well as the control algorithms at different condition. The method can diminish the effects caused by the nonlinearity and lag characteristics of radioactive waste liquid pH control, and achieve properly the automatic adjustment of pH value of the loading waste liquid for the evaporation treatment system.