基于S7-400H冗余PLC的火炬气回收控制系统

Control System based on S7-400H Redundant PLC for Flare Gas Recovery

火炬气回收系统是石化企业重要的装置。火炬气回收系统可以在将生产过程中产生的可燃气体可以通过火炬回收系统回收至燃料气管网,成为装置加热炉的能源,减少环境污染的同时也增加了企业的效益。本文介绍了西门子S7-400H冗余PLC在火炬气回收控制系统中的应用。文章概括了系统工艺流程,阐述了控制系统功能和架构,同时对控制系统硬件配置及软件组态进行了说明,并突出了冗余控制系统的重要特点。

Flare gas recovery is important for petrochmical process. The fuel gas produced in refinery process can be recycled as energe source through that as a result improving benefits and reducing enviroment pollution. An application for flare gas recovery control system based on Siemens S7-400 redundant PLC has been introduced in this paper. And the paper outlined the process flow, described function and structure of the control system as well as system hardware setup and software configuration, highlighted the key features of redundant control system and so on.