为探讨不同煤层条件下地下气化炉结构及气化工艺,在模型试验和现场试验的基础上研究了煤炭地下气化有井式和无井式气化炉结构及其工艺参数,形成了有井式"长通道、大断面、两阶段"气化工艺和无井式渗透式气化方法。试验结果表明:空气气化时可获得热值在4.18 MJ/Nm3以上的煤气;富氧气化时,当富氧体积分数由30%上升到80%时,煤气中有效组分(H2+CO+CH4)体积分数由30%上升到60%;两阶段气化第2阶段可生产H2组分体积分数在40%、热值在11.45 MJ/Nm3以上的煤气。无井式渗透式气化通道贯通参数为:当供风压力0.75 MPa、供风流量600 Nm3/h时,贯通速度为0.34 m/d,通道当量直径0.39 m,正向供风气化和反向供风气化能获得相同质量的煤气。

In order to discuss the structure and gasification technique of the underground coal gasifier under different seam conditions, based on the model experi ment and site experiment, the structure and the technical parameters of the shaft type and no shaft type gasifier were studied and the well type long channel, large cros s section, two stage gasification technique and the no well type permeable gasification method were formed. The experiment results showed that the heat value of the C oal gas with air gasification would be over 4.18 MJNm3.When the enriched-oxygen gasification with an enriched-oxygen content increased from 30% to 80%, the effecti ve component (H2+CO+CH4) contents would be increased from 30% to 60%.The second stage of the two stage gasification could produce the gas with H2 component about 40% and the heat value over 11.45 MJ/Nm3.The channel connection parameters of the no shaft type permeable gasification would be when the air supply pressur e was 0.75 MPa and air supply value was 600 Nm3/h, the connection velocity would be 0.34 m/d and the channel equivalent diameter would be 0.39 m.The forward air supply gasification and the reverse air supply gasification would produce the same quantity of the coal gas.

国家高技术研究发展计划(863计划)资助项目(2011AA050106)；中央高校基础科研业务费专项基金资助项目(2012YH01)；