Hengli Petrochemical has obtained a patent for a vibration damping system for the vacuum evaporator in its ethylene glycol plant, designed to enhance the safety and stability of the plant’s operations
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Hengli Petrochemical has obtained a patent for a vibration damping system designed to improve the safety and stability of operation in ethylene glycol production plants. According to information from the Intellectual Property Office, dated July 29, 2025, Hengli Petrochemical (Dalian) Chemical Co., Ltd. has been granted a patent titled “A vibration damping system for vacuum evaporators in ethylene glycol production plants”; the approval number is CN223158855U, with the application date being September 2024. The patent abstract indicates that this utility model relates to the field of ethylene glycol production equipment, and specifically to a vibration damping system for the vacuum evaporator in such equipment. At the bottom of the secondary evaporator, there is a feed main pipe, which is connected to a first branch pipe and a second branch pipe. The first branch pipe includes a first small-diameter section connected to the feed main pipe, a first liquid-controlled valve, and a first large-diameter section. The second branch pipe includes a second small-diameter section connected to the feed main pipe, a second liquid-controlled valve, and a second large-diameter section ； The first reboiler is connected to the first large-diameter pipe section ； The inlet of the bottom tube side of the second reboiler is connected to the second largest-diameter tube section ； The bottoms of the final evaporators are connected to the first large-diameter pipe section and the second large-diameter pipe section, respectively ； The first damper is installed on the first branch pipe ； The second damper is installed on the second branch pipe. According to Tianyancha data, Hengli Petrochemical (Dalian) Chemical Co., Ltd. was established in 2016 and is located in Dalian. It is a company that focuses on the processing of petroleum, coal, and other fuels. The registered capital of the enterprise is 4,574.95 million RMB. According to the big data analysis provided by Tianyancha, Hengli Petrochemical (Dalian) Chemical Co., Ltd. has made investments in 3 companies, participated in 352 bidding projects, and holds 95 patent records. In addition, the company possesses 611 administrative licenses.
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