According to the China Chemical News, on June 5, the seminar on the development of new coal gasification technology and coal-to-natural gas was held in Langfang, Hebei. Experts at the meeting said that China's coal chemical technology development is at the forefront of the world, but also encountered problems such as falling international oil prices, difficult wastewater treatment, high emissions of three wastes, and imperfect industrial chain. As the key to deal with these problems, the technological innovation of coal gasification must be tailored rather than tailored.
Among them, Zhao Jungui, vice president of the China Petroleum and Chemical Industry Federation, said that in the past 20 years, China's coal gasification technology development has made significant progress, from the introduction of digestion and absorption to a new stage of completely independent innovation, and has formed advanced technologies such as multi-nozzle opposed coal water slurry gasification technology, aviation pulverized coal pressurized gasification technology, Tsinghua water-cooled wall coal water slurry gasification technology, etc., which have now achieved industrialization.
At the same time, many new gasification technologies adapted to domestic coal have also emerged, such as coal hydrogenation gasification, coal catalytic gasification, etc. At present, there are many gasification technologies in China, each with its own characteristics. The selection of coal gasification technologies and processes suitable for different coal types and their downstream industries and products has become the key to the successful operation of coal chemical projects.
Xie Kechang, an academician of the CAE Member, said that gasification technology originated in 1807 and has formed various gasification technologies such as fixed bed, fluidized bed and entrained flow bed. Its principle is to decompose coal, a macromolecular substance, into small particles at high temperature. Some new technologies are new, not new. The development of new coal gasification technology can be innovated in principle, such as effectively improving efficiency through catalysis, hydrogenation, etc., and realizing innovation, which is called revolution.
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