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Tianeng Chemical’s patented technology solves the problem of spray valve sticking. Author/Source: Tianye. Date: May 27, 2022. Clicks: 10. Recently, Tianeng Chemical Co., Ltd.’s patented technology titled “A limit retaining ring that can quickly relieve the sticking condition of spray valves” was granted an invention patent by the Intellectual Property Office. This utility model patent successfully addresses the issue of spray valves sticking during the operation of polymerization reactors. The polymerization reactor spray valve is a crucial piece of equipment in the production process of polyvinyl chloride resin. It plays a vital role in preventing adhesion to the reactor, discharging materials, and flushing during the polymerization reaction. If the spray valve freezes up during the polymerization process, it will prevent the polymerization reactor from operating properly. At the same time, the repair process of spray valves involves special operations, with high construction requirements and a lengthy repair duration. The company’s team of technical experts identified the cause of the problem and carried out intensive research, inventing a \"limiting collar that can quickly release the stuck state of the spray valve.\" This patented technology extends the service life of spray valves, reduces their maintenance frequency, and improves the utilization rate of polymerization reactors. This utility model patent features a simple structure, safety and reliability, low cost, wide applicability, and reduced labor intensity. It is reported that the results of this technological research have been put into industrial use in the polymerization workshop of Tianneng Chemical Plant. It has played an important role in ensuring the safe production of polymerization processes, providing strong technical support for the safe and stable operation of enterprises.