Yangzi Petrochemical Overcomes Technical Difficulties in High Cycle Switching of EVA Device

News from China Petrochemical News “The control room reported that the on-site high circulation heat exchanger has been switched from the A series to the B series, and the operation is normal, and the production parameters of the device are stable.
" Hearing the good news from the walkie-talkie, the Yangzi Petrochemical EVA device Director Wang Lizhi's heart that had been hanging around finally fell
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Since the start-up of the EVA device, due to the imperfect design of the sequence control program of the patenter, the outlet temperature of the secondary unit will be high during high-cycle switching, resulting in emergency interlocking and stopping of the device, which has become a "roadblocker" that affects long-term stable operation.
Each switchover caused severe fluctuations in production and even caused the plant to stop
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The high-pressure circulating gas processing unit of the EVA device is an important part of the device, and its main function is to separate the waste wax and waste oil entrained in the circulating gas through a cooler
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In order to fundamentally solve this technical problem, the device leaders and technical backbones formed a tough team to face the challenge directly, focusing on me, carefully studying the sequence control program logic, comprehensively analyzing the change trend of the process parameters of the switching process, and organizing special analysis meetings to conduct in-depth analysis.
Due to fluctuations, the defects of the sequence control program logic were improved, the operation process was optimized, and the emergency plan was formulated to successfully overcome this problem that affects the long-term operation of the device
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