【Ten Years of Great Progress in Chemical Technology】The MMA production technology using ethylene and syngas was approved between 2005 and 2019
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Over the past decade, chemical technology has seen tremendous progress; let’s celebrate the prosperity and strength of modern China. By contributing our ideas, we can foster more active participation from everyone. HaiChuan becomes even better with your involvement – we welcome all to join in the discussions on this forum. Everyone should pay attention to safety and know how to handle emergencies. ********************************************* The appraisal panel, headed by Academician He Mingyuan from the Chinese Academy of Sciences and co-chaired by Academician Han Buxing from the Institute of Chemistry of the Chinese Academy of Sciences, stated that this project developed a complete set of technologies for producing MMA from ethylene and syngas. It overcame the challenges associated with catalysts and process development in the four steps of formylation, aldol condensation, aldehyde oxidation, and esterification, thus opening up a new route for producing MMA from coal-based materials. This project uses ethylene, syngas, formaldehyde, and methanol – which are downstream products of coal chemical industry – as raw materials to produce MMA through four reaction steps. Starting in 2008 and over a period of more than 10 years, the project team overcame various technical challenges related to catalysts for hydroformylation, aldol condensation, aldehyde oxidation, and esterification, as well as issues concerning separation, purification, and process integration. As a result, a set of technologies with independent intellectual property rights was developed. Through innovations in metal-catalyzed systems using ionic liquids and the design of new reactor structures, they overcame the problems of catalyst deactivation and entrainment during the hydroformylation process. By utilizing the principle of synergistic enhancement from cations and anions, they achieved high conversion rates and selectivity in aldol condensation reactions under mild conditions, thus addressing issues such as high temperatures and pressures, as well as high costs associated with equipment and operation. In March 2019, the complete set of technologies for using ionic liquids to catalyze the conversion of ethylene and syngas into methyl methacrylate (MMA), developed by the Ionic Liquids and Green Engineering Team at the Institute of Process Engineering, Chinese Academy of Sciences, passed the evaluation of scientific and technological achievements organized by the China Petroleum and Chemical Industry Federation last week. This technology opens up new paths and opportunities for the development of MMA and related downstream industries, providing technological support for the advanced, differentiated, and sustainable development of modern coal chemical industry in China.
In 2010, the project team signed a contract with Henan Energy and Chemical Group to jointly promote the industrialization of new technologies. Henan Energy & Chemical Group selected its subsidiary, Henan Zhongyuan Dahuahua Group Co., Ltd., to carry out industrial trials. In 2018, the first 1,000-ton-scale industrial testing facility was built and operated stably; the performance of the products was excellent, confirming the reliability and advancement of this technology. MMA is a basic raw material for high-end materials in aerospace, electronic information, optical fibers, optical lenses, robotics, and other fields. China has the highest consumption of MMA in the world, with a foreign dependence rate of over 60%; its annual demand growth rate is above 10%, making it one of the top ten products with the highest dependence on organic chemical imports. The main production technique for world MMA is the propiononitrile method; it is being phased out due to limitations associated with the HCN raw material, as well as high safety risks and significant pollution. In recent years, the technology for producing MMA using isobutylene, a by-product of petroleum, has been put into industrial demonstration and application in China, bringing new opportunities to address the shortage of MMA in the country. China’s resource profile, dominated by coal, provides a natural advantage for the development of coal-based MMA technology. The successful development of the MMA production technology using the ethylene-syngas route has opened up new paths and opportunities for the development of MMA and related industries, providing technological support for the advanced, differentiated, and sustainable development of modern coal chemical industry in China. At the same time, the successful application of ionic liquids in this technology provides a new example of their use, contributing to further advancement in the industrialization of green ionic liquid technologies worldwide.
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