Safety improvement and renovation project for the plant at Changshu Sanaifu Fluorine Chemical Co., Ltd., which produces 40 tons per year of sodium hypochlorite, hydrogen fluoride, and liquid chlorine

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On January 22, a public announcement was made regarding the approval of the safety improvement and renovation project for the factory of Changshu SAIAFU Fluorine Chemical Co., Ltd., which is designed to increase the annual production capacity to 40 tons of sodium hypochlorite, hydrogen fluoride, and liquid chlorine. The details of the project are as follows: Project name: Safety improvement and renovation project for the factory of Changshu SAIAFU Fluorine Chemical Co., Ltd., aiming to increase annual production capacity to 40 tons of sodium hypochlorite, hydrogen fluoride, and liquid chlorine； Construction unit: Changshu Sanaifu Fluorine Chemical Co., Ltd ； Construction location: Within the existing factory premises of Changshu Sainfu Fluorine Chemical Co., Ltd., located at No. 2 Changyu Road, Changshu New Materials Industrial Park, Haiyu Town, Changshu City, Suzhou ； Project nature: Renovation ； Total investment: 44.8 million yuan ； Construction scale and scope: This project is a safety improvement and renovation initiative for the plant of Changshu SAAFU Fluorine Chemical Co., Ltd., which is designed to increase the annual production capacity to 40 tons of sodium hypochlorite, hydrogen fluoride, and liquid chlorine. No new land will be allocated for this purpose; the construction will take place using the existing facilities of Changshu SAAFU Fluorine Chemical Co., Ltd. The project aims to build a production facility capable of producing 40 tons of sodium hypochlorite per year, as well as to carry out safety upgrades to the existing hydrogen fluoride storage area and liquid chlorine warehouse. The specific construction details are as follows: (1) A new sodium hypochlorite production facility is to be constructed within the buildings used for storing hydrogen fluoride and liquid chlorine. The raw materials for producing sodium hypochlorite will consist of some of the liquid chlorine stored in the liquid chlorine tanks after these upgrades, along with a small amount of liquid chlorine remaining in the transfer pipes during tank replacement, as well as nitrogen-rich chlorine gas. Sodium hypochlorite will be generated using the principle of alkaline absorption, and then sold externally. (2) Plan to demolish some powder warehouses (Class D); after construction, demolish the AHF tank farm, and reuse the liquid caustic tank farm ； A new facility for hydrogen fluoride and liquid chlorine will be constructed (2 floors/Part 3 floors, Category B; floor area of 1167.42 m2, building area of 2398.24 m2). It will be equipped with a sodium hypochlorite production unit, 4 hydrogen fluoride storage tanks with a capacity of 100 m3 each (including 1 emergency tank for hydrogen fluoride), 2 hydrogen fluoride feeding tanks with a capacity of 31 m3 each, 3 liquid chlorine storage tanks with a capacity of 50 m3 each (including 1 emergency tank for liquid chlorine), 3 sodium hypochlorite circulation tanks, as well as related pumps. Upon completion of this project, Changshu Sanaifu Fluorine Chemical Co., Ltd. plans to establish a production capacity of 40 tons per year of sodium hypochlorite. Anhydrous hydrogen fluoride and liquid chlorine currently stored in the factory area will be moved to the newly built facilities for hydrogen fluoride and liquid chlorine, while the existing liquid chlorine warehouse will cease to be used for that purpose and will instead be utilized as auxiliary space.