【Ten Years of Great Progress in Chemical Technology】001-2019: Completion of the world’s first 1,000-ton pilot plant for synthesizing DMF from CO2 in Zaozhuang, Shandong
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On September 1, 2019, at Shandong Zhongke Lvcarbon Technology Co., Ltd., located in the Xuecheng Chemical Industry Park in Zaozhuang City, the pilot-scale project for the production of DMF in quantities of a thousand tons through the utilization of CO2 – a project developed jointly by the Shanghai Institute of Organic Chemistry of the Chinese Academy of Sciences and Shandong Weijiao Group – was successful, yielding DMF products with a purity of over 99.5%. Ren Xiaogang, director of the Technology Center at Weijiao Group and general manager of Zhongke Lvcarbon Technology Co., Ltd., told reporters that this pilot-scale installation will enable CO2, considered the main culprit behind the greenhouse effect, to be used industrially in the field of formylation for the first time as a resource. It is reported that in current DMF production processes, carbon monoxide produced from coal is commonly used for catalytic synthesis with dimethylamine, whereas Zhongke Lvcarbon uses carbon dioxide, hydrogen, and dimethylamine for catalytic synthesis. Since the chemical feeding was carried out on May 29, this device has been operating continuously for over 1,200 hours in total. This technology has now been **patented**, with a patent granted in Japan, as well as applications filed in the EU and the US.
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It is understood that the pilot-scale project for producing DMF from CO2 on a scale of thousands of tons, carried out by Shandong Zhongke Lvcarbon Company, is based on the fundamental research findings of Ding Kuiling’s team at the Shanghai Institute of Organic Chemistry. This method replaces the traditional approach, which uses CO as the C1 starting material, by employing CO2 together with one molecule of H2 as raw materials; it thus overcomes the limitation associated with homogeneous catalysts, where it is difficult to achieve high activity, long lifespan, and high stability simultaneously. Based on a thorough understanding of the reaction mechanism, a second-generation catalyst with complete independent intellectual property rights was designed and synthesized. Through close collaboration with engineering experts and business management specialists, a complete set of equipment was developed; the reactions were scaled up step by step, data was collected, and the equipment was tuned, resulting in a set of original technologies. These core technologies have been patented internationally and are now in use in the United States, Europe, and Japan.
The world’s first pilot plant for the synthesis of DMF from CO2 on a thousand-ton scale has been built; since the chemical feeding started on May 29, 2019, it has been operating continuously for over 1,200 hours in total. The results of the 72-hour test organized by the China Petroleum and Chemical Industry Federation show that the pilot plant operates stably, with a product purity of over 99.5%, a selectivity of greater than 99.97%, and a one-pass conversion rate of over 59%. The catalyst consumption per ton of product is less than 0.65 grams, while the consumption of dimethylamine is 640.42 kilograms, hydrogen is 320.1 standard cubic meters, and CO2 is 331.7 standard cubic meters. This plant is the world’s first pilot plant for synthesizing DMF from CO2 through resource utilization.