[Ten years of development of chemical equipment] 1192-2023 20" large diameter high-pound metal-sealed wear-resistant ball valve
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Looking at the ten years of development of chemical technology, we praise the prosperity and strength of China in the prosperous age. It is more lively and more exciting with everyone's participation. [Ten Years of Development of Chemical Equipment] Continue to update summary posts, welcome to participate in the discussion https://bbs.hcbbs.com/thread-3576046-1-1.html Enhance quality awareness and promote high-quality development-----------------------------------------The ball valve of the coking plant involves high temperature, high pressure, and coking media. It has extremely high technical requirements for the valve and needs to be equipped with an anti-coking purge device. Currently, such valves are mainly manufactured internationally by WELAN and MOGAS. The cut-off ball valve for the coking unit independently developed by CNNC introduced the successful development experience of coal chemical ball valves. It is wear-resistant and high-temperature resistant, and adopts a spring dust-proof structure, a scraper design and other ball valve structures suitable for multi-phase flow media. It successfully overcomes the challenges of the coking unit in terms of technical details and valve development, demonstrating CNNC's progress and achievements in the field of innovative technology. Recently, CNNC successfully completed the delivery of a 20" large-diameter, high-pound metal-sealed and wear-resistant ball valve for the coking unit. This is CNNC's first order for this type of ball valve, marking another step forward for the company in the localization of high-end ball valves. The successful development and delivery of the ball valve for the coking unit is the result of CNNC's continuous pursuit of innovation. With the technical team's continuous research on the special working environment and working requirements of this type of ball valve, and relying on its own technology and experience, it has successfully developed a ball valve suitable for multi-phase flow media structures. This technological innovation will bring customers more efficient and reliable solutions.
[Ten years of development of chemical equipment] Spectacular pictures from 1193 to 2023! The oxidation reactor of Yizheng 3 million tons PTA project was successfully installed https://bbs.hcbbs.com/thread-5429277-1-1.html (Source: Haichuan Chemical Forum Network)
At present, the two-way ball valves used in delayed coking equipment in petrochemical or coal chemical industries are mainly imported velan two-way ball valves. One end of the ball valve is a floating valve seat pre-tensioned by a bellows, and the other end is a fixed valve seat. There are purge pipes inside and outside the valve cavity, packing and bellows, and have anti-locking and anti-coking functions. However, there is no sealing structure between the purge chamber and the medium channel in the bellows, resulting in high steam consumption and high operating costs. Moreover, it is easy for coking to form between the bellows and the guide tube, between the bellows and the valve body, and in the valve cavity. The bellows will also get stuck due to the coking of the medium and cannot play the role of elastic compensation. As a result, the ball is prone to getting stuck and the valve cannot work properly.
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