Enhanced-hydrogen gas production through underground gasification of lignite

作     者：LIU Shu-qin WANG Yuan-yuan ZHAO Ke YANG Ning 

作者机构：School of Chemistry and Environmental Engineering China University of Mining ＆ Technology Beijing 100083 China 

出 版 物：《Mining Science and Technology》 (矿业科学技术（英文版）)

年 卷 期：2009年第19卷第3期

页      面：389-394页

核心收录：

学科分类：081702[工学-化学工艺] 081901[工学-采矿工程] 0808[工学-电气工程] 0709[理学-地质学] 0819[工学-矿业工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0817[工学-化学工程与技术] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0814[工学-土木工程] 0702[理学-物理学] 

基　　金：Projects 50876112 and 50674084 supported by the National Natural Science Foundation of China 

主　　题：underground coal gasification hydrogen lignite 

摘      要：Underground coal gasification is one of the clean technologies of in-situ coal *** production from underground gasification of lignite was investigated in this study based on simulation *** of lignite, gasification activity, oxygen-steam gasification and the effect of groundwater influx were *** well, the advantages of lignite for stable underground gasification were *** results indicate that lignite has a high activity for *** pyrolysis is an important source of hydrogen *** special heating conditions, hydrogen is released from coal seams at temperatures above 350 °C and reaches its maximum value between 725 and 825 °*** with a hydrogen concentration of 40% to 50% can be continuously obtained by oxygen-steam injection at an optimum ratio of steam to oxygen, while lignite properties will ensure stable *** influx can be utilized for hydrogen preparation under certain geological conditions through pressure ***, enhanced-hydrogen gas production through underground gasification of lignite has experimentally been proved.