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I overcome the problem of gasification coal mining and co-production of combustible gas

2008-02-20View Original

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Last week, we received news from the Inner Mongolia Department of Science and Technology that the ENN well-less gasification coal mining and methanol, methane, and power generation co-production industrial pilot project currently produces 150,000 cubic meters of syngas per day, and the coal resource utilization rate exceeds 75%. This project has overcome the bottleneck of lignite mining, and the combustible gas developed and produced will become an important resource for my country's chemical production. Lignite is a coal resource with a higher coalification degree than peat. According to incomplete statistics, the world's lignite reserves reach 1 trillion tons, China's lignite reserves reach 211.8 billion tons, and Inner Mongolia's lignite reserves are nearly 200 billion tons. However, lignite resources with such huge reserves are extremely unstable and volatile, which is extremely unfavorable for traditional underground mining. In response to this situation, Hebei Xinao Gasification Coal Mining Group and China University of Mining and Technology jointly conducted a gasification mining scientific research test at Gonggou Coal Mine in Ulanqab City, Inner Mongolia. From April 18 to October 13, 2007, after six months of hard work, they built a gasification coal mining test project pilot base integrating an underground gasifier and ancillary above-ground gas gathering system, gas primary purification and desulfurization system, and sewage treatment system in a 1-square-kilometer test mining area of ​​Gonggou Coal Mine in Ulanqab City, Inner Mongolia. The base was successfully ignited on October 22, 2007, and underground gasification gas was obtained, marking the successful ignition and gas production of part of the underground gasification furnace of my country's independently innovative shaftless gasification coal mining technology. According to statistical data monitoring for several consecutive months, the daily production of syngas from Xinao's well-less gasification coal mining and methanol, methane, and power generation co-production industrial pilot projects has reached 150,000 cubic meters. The coal resource utilization rate has exceeded 75%. The calorific value of air gas has reached 800-1,000 calories. The combustible gas produced will become * * An important resource for chemical production. The ENN gasification coal mining project not only overcame three key technical problems, but also made breakthroughs in related issues such as gasification channel connection and pure oxygen-water vapor continuous gasification process parameter control. At the same time, safety and environmental monitoring for gasification mining have also been carried out. * * Certified by the authoritative organization Puni Monitoring Center, reaching * * level environmental protection standards. At present, Xinao's wellless gasification coal mining test has been included in the Inner Mongolia Autonomous Region's major scientific and technological projects. Among them, six technologies are applying for patents.

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