A major industrial tail gas utilization project is taking shape at Mengxi High-tech Industrial Park within the Otog High-tech Industrial Development Zone. Operated by Ordos Shuangxin Chemical Industry Co, the facility is designed to produce 200,000 metric tons of dimethyl carbonate (DMC) and 60,000 tons of ethyl methyl carbonate (EMC) or diethyl carbonate (DEC) annually.

The Ordos industrial tail gas utilization project site. [Photo/Wechat account of Nuan News]

With a total investment of 1.54 billion yuan ($212 million) and covering an area of 195,000 square meters, the project is being carried out in two phases.

The first phase, with an annual output of 100,000 tons of DMC and 30,000 tons of EMC/DEC, required an investment of 989 million yuan and entered trial production in November 2025.

The second phase, consisting of production units for 100,000 tons of DMC and 30,000 tons of EMC/DEC per year, is under construction from June 2026 to April 2028. Once completed, the project's total annual capacity will reach 200,000 tons of DMC and 60,000 tons of EMC or DEC.

The project makes use of the company's existing calcium carbide production lines, converting industrial tail gas into raw materials for carbonate products. This approach puts idle tail gas resources to productive use, supports green and low-carbon development, and creates a model of industrial synergy – enabling resource recycling while cutting costs and improving efficiency.

The commissioning of this project addresses a long-standing gap in the electrolyte solvent segment of Inner Mongolia autonomous region's energy storage and new energy vehicle industry chains.