Design and Implementation of Control System for Regenerative Thermal Oxidizer
To improve the purification efficiency of regenerative thermal oxidizer(RTO)in the waste gas treatment of PVC glove manufacturing industry,a three-chamber RTO process is designed according to the characteristics of waste gas produced in the industry,and a supporting PLC-based automatic control system is developed.First,the hardware control system is constructed according to the RTO process flow and monitoring requirements.Then,the software system is designed in terms of functions such as lift valve automatic reversing,frequency regulation control of waste gas volume and PID temperature regulation control,which ensure the efficient automatic operation of RTO.Further,through TCP/IP protocol,the Ethernet connection between PLC,touch screen,and industrial gateway is constructed,and an intuitive and easy-to-operate touch screen monitoring interface is designed,which realize the local monitoring and remote online monitoring function based on cloud server for the RTO system.Finally,the temperature and frequency data in practical production applications are used to verify the safety and reliability of RTO system.The measured data show that the control system not only operates stably and reliably,but also significantly improves the purification efficiency of the waste gases,with the purification efficiency up to 99.3%.
control systemregenerative thermal oxidizerPLCtemperature controlwaste gas treatment
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