Jiangsu Supor’s 200,000-ton-per-year dimethyl carbonate project

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Jiangsu Suph Chemical Co., Ltd. plans to use domestically produced raw materials such as methanol and carbon monoxide, along with Japan’s Ube methanol gas-phase carbonylation technology, to build a dimethyl carbonate plant with an annual production capacity of 200,000 tons. Of this, 100,000 tons are industrial-grade dimethyl carbonate, and 100,000 tons are electronic-grade dimethyl carbonate. The project uses a fixed-bed reactor, eliminating the need for equipment to separate the products from the catalyst and thus reducing capital investment. The oxygen required for the synthesis process reacts in the methyl nitrite regenerator; no oxygen is added directly to the DMC synthesizer, which significantly reduces the risk of explosion, offering better safety and stability compared to the liquid-phase method. The total investment for the project is 1,543,797,600 yuan. The project is scheduled to start construction in June 2027 and be completed by December 2029. The methanol vapor-phase carbonylation to dimethyl carbonate technology developed in Ube, Japan, has been successfully applied in various projects both domestically and internationally, such as Zhongyan Hongsihuang, Shanxi Xiaxin, Huaibei Linhuan, and Shaanxi Yulin Coal Chemical. Production capacity ranges from 50,000 tons to 200,000 tons. Among them, the Zhongyan Hongsi Fang unit has been operating stably and continuously for many years, featuring a mature process as well as safety and reliability. In April 2026, the Zhenjiang Ecology and Environment Bureau issued a public notice regarding the approval for Jiangsu Supor Chemical Co., Ltd.’s 200,000-ton-per-year dimethyl carbonate production project.