造纸厂纸料配浆过程控制系统

Process Control System of Paper Stock Pulping in Paper Mill

纸料配浆过程控制系统针对传统控制方式的不足,采用混合池液位-流量串级比值控制方案,当纸机负荷波动时,保证抄前池液位稳定地向纸机提供稳定流量的浆液,同时通过改变比值器的给定值使造纸原料按比例投放,具有动态响应及时、控制精确度高等优点。

Aiming at the shortcomings of traditional control methods,the paper stock mixing process control system adopts a cascade-ratio control scheme of mixing tank liquid level and batching flow.When the load of the paper machine fluctuates,liquid level in the forebay can stably provide a stable flow of slurry to the paper machine.At the same time,by changing the given value of the comparator,the papermaking raw materials are put in proportion,which has the advantages of timely dynamic response and high control accuracy.