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The Scientific World Journal
Volume 2014, Article ID 154197, 9 pages
Research Article

Gas Production Strategy of Underground Coal Gasification Based on Multiple Gas Sources

Duan Tianhong,1,2,3 Wang Zuotang,1,2,3 Zhou Limin,1,2,3 and Li Dongdong1,2,3

1School of Mining Technology, China University of Mining and Technology, Jiangsu, Xuzhou 221116, China
2State Key Laboratory of Coal Resources and Mine Safety, China University of Mining and Technology, Jiangsu, Xuzhou 221116, China
3Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, Jiangsu, Xuzhou 221116, China

Received 20 January 2014; Accepted 22 May 2014; Published 9 July 2014

Academic Editor: Adolfo Iulianelli

Copyright © 2014 Duan Tianhong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


To lower stability requirement of gas production in UCG (underground coal gasification), create better space and opportunities of development for UCG, an emerging sunrise industry, in its initial stage, and reduce the emission of blast furnace gas, converter gas, and coke oven gas, this paper, for the first time, puts forward a new mode of utilization of multiple gas sources mainly including ground gasifier gas, UCG gas, blast furnace gas, converter gas, and coke oven gas and the new mode was demonstrated by field tests. According to the field tests, the existing power generation technology can fully adapt to situation of high hydrogen, low calorific value, and gas output fluctuation in the gas production in UCG in multiple-gas-sources power generation; there are large fluctuations and air can serve as a gasifying agent; the gas production of UCG in the mode of both power and methanol based on multiple gas sources has a strict requirement for stability. It was demonstrated by the field tests that the fluctuations in gas production in UCG can be well monitored through a quality control chart method.