Recently, the Hohhot Ecological Environment Bureau released a public notice on the acceptance of the environmental impact report for the 400,000 tons/year caustic soda and 400,000 tons/year polyvinyl chloride (PVC) relocation and upgrading project of Inner Mongolia Sanlian Chemical Corporation Limited.

Construction Content of the Project: It will build a 400,000 tons/year caustic soda production unit, a 400,000 tons/year PVC production unit, and a 600,000 tons/year calcium carbide slag comprehensive utilization unit. The project will be constructed in two phases. The main construction scale of each phase includes a 200,000 tons/year PVC unit, a 200,000 tons/year caustic soda unit, and a 300,000 tons/year calcium carbide slag comprehensive utilization unit. 

Located in Hohhot Jinshan Economic Development Zone, Inner Mongolia Sanlian Chemical Corporation Limited has not only been severely restricted in its development and expansion but also does not conform to the industrial positioning of the municipal government for Jinshan Development Zone. The Group plans to relocate the production bases of caustic soda, PVC, calcium carbide, etc., to Tuoqing Industrial Park. Through relocation and upgrading, it will promote the transformation and upgrading of the chlor-alkali industry with independent innovation and technological progress. The new project will adopt a series of new technologies, including large closed calcium carbide furnaces, advanced dry-process acetylene, zero-gap ion-exchange membrane electrolyzers, domestic ion-exchange membranes, mercury-free catalysts, large polymerization kettles, and the preparation of desulfurizers from recycled calcium carbide slag. These measures will realize the green and low-carbon development of calcium carbide and chlor-alkali industries, promote the popularization and application of advanced energy-saving technologies, facilitate the construction of a green circular industrial chain for the calcium carbide-PVC industry, and help achieve the "dual carbon" goals.