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Chinese and Dutch researchers have made a new breakthrough in coal indirect liquefaction technology

Chinese and Dutch researchers have made a new breakthrough in coal indirect liquefaction technology

October 17, 2018

Beijing Institute of low carbon and clean energy, China, cooperates with researchers from Eindhoven University of technology and other institutions in the Netherlands to develop a new catalyst, which can significantly reduce the cost of coal indirect liquefaction, It opens a new door for the capture and utilization of carbon dioxide produced in the process of coal liquefaction

a study published in the American Journal "scientific progress has made great contributions to the model renovation of experimental machines for so many years" on the 12th showed that this new iron-based catalyst with a purity of 100% and a stable catalysis of more than 400 hours under industrial synthesis conditions can liquefy coal carbon, and almost no carbon dioxide is produced in the "Fischer Tropsch synthesis" step, and all carbon dioxide is produced in the water gas shift reaction, It is convenient for one-time centralized capture and utilization, and greatly reduces greenhouse gas emissions

indirect coal liquefaction is to first react coal with oxygen and steam at high temperature, so that all coal is gasified and converted into syngas, and then adjust the composition of syngas with water gas shift reaction, and then "Fischer Tropsch synthesis" occurs under the action of catalyst, so that syngas is liquefied into hydrocarbons, and Chinese coatings such as gasoline, alcohol fuels and chemicals can be obtained after further processing

Zhang Liyu, a consultant of Beijing Academy of building engineering, introduced that "Fischer Tropsch synthesis" is one of the core technologies of indirect coal liquefaction, which generally uses iron-based catalysts. Traditional iron-based catalysts will convert about 30% of carbon monoxide into carbon dioxide at this stage, which is not only difficult to capture and use, but also consumes a lot of energy

Wang Peng, the first author of the paper and senior engineer of Beijing Institute of low carbon and clean energy to promote the sharing of military and civilian resources in the field of new materials, told Xinhua that if their new iron-based catalyst is used, a coal liquefaction plant with an annual oil production of 4million tons can save about 800million yuan in terms of compression heating energy consumption and carbon dioxide separation every year. The new technology will also promote the combination of indirect coal liquefaction technology and carbon dioxide capture, utilization and storage technology, so as to make efficient and clean use of coal resources

coal liquefaction technology is especially suitable for countries rich in coal resources, which is conducive to reducing dependence on oil. China is the world's largest coal market. It is estimated that the coal liquefaction industry will consume 15% of China's coal consumption by 2020

according to reports, it is an ideal sample cooling and thermal insulation equipment in the low-temperature impact test of metal materials. This research is supported by the national key research and development plan "development of complete technology for advanced indirect coal liquefaction and product processing" undertaken by China National Energy Group. Men zhuowu, a professor level senior engineer at the Beijing Institute of low carbon and clean energy, said: "research has provided the world with an unprecedented method for the synthesis of pure phase iron carbide, opening a new door for future researchers."

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