An exsitu underground coal gasification experiment with a siderite interlayer:course of the process,production gas,temperatures and energy efficiency
作者机构：Główny Instytut Górnictwa(Central Mining Institute)Plac Gwarków 140-166 KatowicePoland Politechnika SlaskaKatedra Geologii Stosowanej(Institute of Applied GeologySilesian Technical University)ul.Akademicka 2AGliwicePoland
出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)
年 卷 期：2021年第8卷第6期
页 面：1447-1460页
核心收录：
学科分类：081901[工学-采矿工程] 0808[工学-电气工程] 0819[工学-矿业工程] 08[工学] 0818[工学-地质资源与地质工程] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程]
基 金：The research presented in this article was performed within the work"Conducting an exsitu experiment of underground coal gasification with a mineral interlayer"commissioned and funded by the Silesian University of Technology in Gliwice Department of Applied Geology by order sign ZP/018521/18/ZZ/01987/18
主 题：Underground coal gasification UCG Siderite interlayer Water Ex situ Hydrogen
摘 要：A 72-h ex situ hard coal gasification test in one large block of coal was carried *** gasifying agent was oxygen with a constant flow rate of 4.5 m^(3)/*** surroundings of coal were simulated with wet sand with 11%moisture content.A 2-cm interlayer of siderite was placed in the horizontal cut of the coal *** a result of this process,gas with an average flow rate of 12.46 m^(3)/h was *** direct influence of siderite on the gasification process was observed;however,measurements of CO_(2)content in the siderite interlayer before and after the process allow to determine the location of high-temperature zones in the *** greatest influence on the efficiency of the gasification process was exerted by water contained in wet *** the high temperature that prevailed in the reactor,this water evaporated and reacted with the incandescent coal,producing hydrogen and carbon *** reaction contributes to the relatively high calorific value of the resulting process gas,averaging 9.41 MJ/kmol,and to the high energy efficiency of the whole gasification process,which amounts to approximately 70%.
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