plc在锅炉除尘控制系统中的应用详解.doc

摘 要 随着中国经济的不断发展，我国是世界上使用燃煤锅炉数量最多的国家，燃煤锅炉是大气环境最主要的污染源，燃煤锅炉排放出大量的粉尘。近几年，布袋除尘系统大量应用于锅炉烟气除尘，具有清灰技术先进、气布比高、处理风量大、占地面积小、净化效率高、工作可靠、结构简单、维修量小等特点。 由于煤处理系统Application of PLC Boiler Dust System Abstract As Chinese economy developing, our country is the largest number of turtles countries use coal-fired boilers in the world, coal-fired boilers are the most important sources of atmosphere environment, coal-fired boilers emit a lot of dust. In recent years, bag filter system widely used in the boiler flue gas dust removal, with advanced cleaning technology, air cloth ratio, handling large amount of wind, small footprint, high purification efficiency, reliable operation, simple structure, small amount of maintenance, etc. . In the Coal handling systems, It is difficult to control in harsh environment. If we control the system through the manual mode, it is difficult to predict the problem will be appear. This article describes the application of Omron CJ2M series CPU33 bag filter system, using constant pressure automatic control and automatic control based on the actual timing of the blowing experience constant pressure injection cycle setting, the use of programming software CX-Programmer designed mainly to complete analog signal processing. And displayed on the PC in the start-stop control, parameter setting, alarm linkage, historical data query functions. Hardware and software control system design, and a detailed explanation of the control scheme. The whole system is safe and reliable, economical and practical.Achieve a good effect of dust when Put into use. Through the study of the dust removal system, developed PLC well in the boiler-based dust removal system to achieve a safe working long and can reduce the amount of human and material resources to promote environmental protection, but also can improve the production level of automation, which has great practical significance and value. Keywords: Dust bag; Automatic control; Touch screen; Omron PLC 目 录 第一章 绪论