Gasifier Type and Technique of Underground Coal Gasification
Gasifier Type and Technique of Underground Coal Gasification
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发表时间：
2013
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通讯作者：
Xiong Jian-fen;Enn Coal
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作者：
Xiong Jian-fen;Enn Coal
为了探讨不同煤层条件下煤炭地下气化炉的结构和气化工艺，在模型试验和现场试验的基础上，对竖井式和无竖井式气化炉的结构和技术参数进行了研究，并提出了井式长通道、大截面、实验结果表明，加入空气后的煤气热值比未加入空气的煤气热值高，当富氧含量从30%增加到80%时，有效成分（H2+CO+ CH 4）含量由30%提高到60%，第二段可得到含H2约40%、热值大于11.45 MJ/m3的煤气。无轴式渗透气化的通道连接参数为：供气压力为0.75 MPa，供气量为600 Nm ~ 3/h，通道连接速度为0.34 m/d，通道当量直径为0.39 m，正向供气气化和反向供气气化产气量相同。
In order to discuss the structure and gasification technique of the underground coal gasifier under different seam conditions,based on the model experiment 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 cross 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 coal gas with air gasification would be over 4.18 MJ/Nm3.When the enriched-oxygen gasification with an enriched-oxygen content increased from 30% to 80%,the effective 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 pressure 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.