Design of a Split Self-Cleaning Heat Recovery Device for Industrial Waste Gas
A split self-cleaning industrial waste gas heat recovery device is proposed in order to solve the problem that the heat ex-change efficiency of the device in chemical fiber plant decreases due to dirt stratification after running for a period of time.The split heat exchanger was designed,and the brushing mechanism,push-pull trolley and high-pressure nozzle controlled by PLC were used to realize automatic opening and closing of heat exchanger plates and cleaning of finned tubes.The test results show that the device maintained a high heat exchange efficiency,which is about 5％ higher than the original integral one,and the cleaning time was shortened from 10h to 2.5h.The waste heat recovery device improves the energy utilization efficiency,reduces the production cost and reduce the maintenance time,which provides a reference for the recovery and utilization of low-grade heat energy.
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