基于双网络双服务器架构的碱回收智能控制系统及优化方法

Intelligent Control System and Optimization Method for Alkali Recovery Based on Dual Network Dual Server Architecture

关键词:  碱回收工艺流程  双网络双服务器架构  高级控制算法  软测量  粒子群优化

Key Words:alkali recovery process flow  dual network dual server architecture  advanced control algorithm  soft measurement  particle swarm optimization

摘要:目前，大部分制浆造纸厂的减排脱碳效果不佳，信息化水平较低。本研究以碱回收工段为例，提出了基于双网络双服务器架构的碱回收智能控制系统。该系统基于双环以太网双冗余服务器架构，下位机选用西门子S7-400系列PLC控制器，CPU和I/O模块等硬件均采用冗余设计，对碱回收蒸发、燃烧和苛化工段进行稳定可靠的分散控制；上位机配备Web服务器、企业办公互联网和远程服务通道，不仅可以增强系统内部的信息共享能力，还可实现对系统的远程诊断与维护；最后，采用高级控制算法对各工段的重要参数进行优化控制。实际应用结果表明，该系统不仅可有效提升黑液的处理效率，还可以减少生产过程的能量损失，并为碱回收工段智能化和信息化转型升级提供依据。

Abstract:Currently， most paper mills have poor emission reduction and decarbonization effects， and their level of informatization is relatively low. The alkali recovery section was taken as an example in this study， and an intelligent control system for alkali recovery based on a dual network and dual server architecture was propesed. The system was based on a dual ring Ethernet dual redundant server architecture， with Siemens S7-400 series PLC controller selected as the lower computer. Hardware such as CPU and I/O modules were designed with redundancy， providing stable and reliable decentralized control for alkali recovery， evaporation， combustion， and causticization sections. The upper computer was equipped with Web server， enterprise office internet， and remote service channel， which could not only enhance the information sharing capability within the system， but also realize remote diagnosis and maintenance of the system. Finally， advanced control algorithms were used to optimize and control the important parameters of each section. The practical application results showed that the system could not only effectively improve the treatment efficiency of black liquor， but also reduce energy loss in the production process. It also provided the basis for the intelligent and information-based transformation and upgrading of the alkali recovery section.