Monitoring and Control System of Turbine Expander-Compressor in Ethylene Cracking Equipment

With the developing of the methane turbine expander compressor used in ethylene cracking equipment which belongs to the key subproject of the research and development of high technical equipment and its localization from 9th National Five Year Research Program of Science Technology,and with its openness and safety fully considered,we designed an independent distributed control system,which is composed of intelligent controller,programmable logic controller,status monitor and industrial computer.This paper introduces the general structure of the control system and proposes a whole set of solutions consisting of hardware and software.Through the field test and operation,the system is proved to be reliable and stable.