摘要
介绍了煤炭地下气化原理及实现过程,建立了煤炭地下气化技术体系,总结了煤炭地下气化技术研究现状,并指出了其发展趋势和应用前景。研究结果表明,空气气化时可获得热值在4.18MJ/Nm^3以上的煤气,该煤气可用于工业锅炉燃烧和发电;富氧气化随着富氧浓度的提高,煤气中有效组分(H_2+CO+CH_4)增加,当氧气浓度达到80%时,煤气中有效组分可达到60%以上,富氧煤气可作为化工合成的原料气;控制注气点后退地下气化工艺是煤炭地下气化产业化的技术方向。
Underground coal gasification （UCG） is a new technology of cleanefficient coal development and utilization. The paper introduced the principle and realization process, established the technical system, summarized the current situation, and points out the development trend and application prospect of underground coal gasification. The results show： in air gasification, the calorific value of UCG gas is over 4. 18 MJ/Nm^3, which is qualified for combustion in industrial boiler and generate electricity; in oxygen - enriched gasification, the effective component gas （H2＋CO＋CH4） increases along with the increase of oxygen - enriched air concentration, which is over 60% when the oxygen concentration reaches 80%, the oxygen -enriched UCG gas can be used as synthetic gas for chemical synthesis; UCG technology with control of gas injection point backing is the direction of industrialization.
出处
《煤炭工程》
北大核心
2017年第8期1-4,8,共5页
Coal Engineering
基金
中国工程院咨询研究项目(2017-ZD-03)
高等学校学科创新引智计划资助项目(B14006)
关键词
煤炭地下气化
技术体系
气化炉
气化工艺
underground coal gasification
technical system
gasifier
gasification technology
