【Major Industrial Equipment in the Chemical Engineering Sector】438 – The first large-diameter disc valve for cold hydrogenation units in the polysilicon industry

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In June 2022, Tike Group won the bid for 16 large-diameter disc valves for the high-purity polysilicon project at Hongyuan Energy Technology (Baotou) Co., Ltd., thanks to its strong technical capabilities, solid work ethic, excellent operational team, and good corporate reputation. These valves represent the first set of such large-diameter disc valves used in China’s polysilicon industry for cold hydrogenation processes; they have a pressure rating of 600 pounds and can operate at temperatures of 520 degrees. The project was designed and overall contracted by Hualu Engineering Technology Co., Ltd. During the bidding process, all competing suppliers were highly capable, resulting in fierce competition; several rounds of communication, negotiation, and evaluation were carried out. From the initial determination of the intention to bid, to the submission of the company’s qualifications, and then to the development of the technical plan ； After several rounds of technical exchanges and the overcoming of key technical challenges, the Tekos solution was unanimously approved by Hualu Institute, the project owner, as well as Dr. Yang, the representative of the owner, and it ultimately won the bid. The total investment in the construction of Hongyuan Energy’s high-purity silicon crystal project is 11.8 billion yuan, with a total land area of 1,700 mu. To meet the requirements of material balance for the unit, such as the increase in the amount of silicon powder in the cryohydration reactor and the rising processing capacity, Hualu Institute increased the size of the silicon powder feed pipe during design and employed large-diameter disc valves to ensure material balance as well as rapid shutdown in emergency situations.