PLC在移动式膜法提纯沼气生产生物天然气工程中的应用

Application of PLC in Biogas Purification with Mobile Membrane Methodin Natural Gas Engineering

指出了随着当代自动、智能化的发展,自动化控制技术已广泛应用于各个行业。其中,在移动式膜法提纯沼气生产生物天然气工程中的应用将成新的亮点。分析了传统的沼气提纯工艺的不足,而用PLC控制生产装置,能大幅提高生产及安全生产效率。同时对比了移动式膜法提纯沼气生产生物天然气工程装置的优势:采用模块化、智能化设计,具有易安装、易操作、易监控的特点,提纯装置控制系统可以在各种检测传感器的配合下对沼气提纯生产过程进行实时监测,并依据所检测数据对各工艺设备进行控制;系统通过PROFIBUS现场总线实现PLC与自动控制系统设备及各模块单元通讯,采用MPI、Modous RTU协议实现PLC与上位机系统之间的通讯。

With the development of automatic and intelligence, automation control technology has been appneo in various industries. Among them, the automatic control system using in the application of membrane biogas purification device will become a new bright spot. Traditional biogas purification process has a low production efficiency and pro- duction safety coefficient, and production device with PLC control, can greatly improve the efficiency of production and safety in production. Therefore, mobile membrane biogas purification device which produces natural gasis designed to be modular and intelligent is easy to install, operate and monitor. Purification device control system can be in cooperation with various detection sensor for real--time monitoring of biogas purification process and on the basis of the testing data to control the process equipment; System throughPROFIBUS field bus to realize PLC unit communications equipment and automatic control system and the module of communication, using MPI, Modous RTU communication protocol implementation of PLC and PC communications system.