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Recently, the research team of the Shanghai Key Laboratory of Low Carbon Conversion Science and Engineering of the Chinese Academy of Sciences has made new progress in the research of CO2 membrane separation technology. Relying on the support of the Ministry of Science and Technology's “863†project, “Key Technology for High-Efficiency Carbon Dioxide Absorption and Separationâ€, the Shanghai High-Level Research Institute conducted a high-performance molecular sieve membrane preparation and characterization for gas in the process of high-pressure CO2 capture in the modern coal chemical industry. Separation of applied research, the formation of a series of self-owned intellectual molecular sieve membrane preparation and amplification, the design and optimization of membrane modules, mold test device design and processing of complete sets of technology and technology packages. At the beginning of the year, the research team achieved stable operation of a membrane separation unit of 50m3/h for 1,000 hours at the Shanxi Luan Mining Group Coal & Oil Company. At 3MPa, the CO2 permeability exceeds 10-6 mol/(m2×s×Pa), the average selectivity of CO2-H2 exceeds 50, and the performance reaches the latest internationally reported level.
There is a huge pressure on CO2 emissions in China and there is an urgent need for low-cost CO2 capture technologies. Compared with traditional CO2 capture technology, membrane separation technology has a series of advantages such as low energy consumption, low equipment investment, simple operation and maintenance, and has a very good industrial application prospect. Shanghai Institute of High-Technology, based on the in-depth study of the molecular sieve membrane film formation mechanism, has developed a method for the preparation of ultra-thin zeolite membranes, while significantly reducing the cost of membrane synthesis. The synthetic membrane tube permeability has been greatly improved over the current level. At present, the research team has completed production amplification of membrane tubes and will carry out the design and manufacture of industrial-scale modules.
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