立窑水泥生产线集散控制系统

给出一套适合立窑水泥生产过程的集散控制系统。本系统由ＤＣＳ（ｄｉｓｔｒｉｂｕｔｅｄｃｏｎｔｒｏｌｓｙｓｔｅｍｓ）系统和ＰＣ总线工业控制机组成，实现全厂的集中管理和各个生产点的分散控制。实用证明了该系统的有效性和实用性。

Distributed Control for Cement Plant from Vertical Shaft Kiln

The distributed control for cement production from vertical shaft kiln (VSK) is presented in this paper.On the basis of the characteristic of cement production from VSK,The system consisted of DCS and the PC bus based industrial computers is the process control system with the functions of data acquisition and porocessing,open loop and closed loop control,observing and operating,monitoring and generation of alarms,reporting and archiving.The control system contains a central control room,4 control stations and 10 PC bus based industrial computers.The four control stations complete control of group of crushing and storage of raw materials,group of grinding of raw mill,group of VSK,group of cement producing and packed.The local computer control and monitor the various sections,as (1) control of raw material blending,(2) control of pre watering granulating,(3) fuzzy control of vertical shaft kiln,(4) control of clinker material blending,etc. Communication unit complete communication of central computer and various local computers.The central control room can make control decision to local computers,record data for trending,time stamp data,generate reports,store and retrieve recipes,and display process infomation and alarm status to the operators.This system has worked in the plant for 1 year.Quality assurance and cost effectiveness is achieved through powerful automation systems.