Gasification of lignite and hard coal with air and oxygen enriched air in a pilot scale ex situ reactor for underground gasification
Gasification of lignite and hard coal with air and oxygen enriched air in a pilot scale ex situ reactor for underground gasification
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DOI：
10.1016/j.fuel.2010.12.007
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发表时间：
2011-03-01
期刊：
影响因子：
7.4
通讯作者：
Rogut, J.
中科院分区：
文献类型：
--
作者：
Stanczyk, K.;Howaniec, N.;Rogut, J.
本文研究的主要目的是在非原位反应器中模拟地下褐煤和坚硬煤层的空气气化。以原煤和地层含水率为水蒸气来源，分别以氧气、空气和富氧空气为气化剂，对褐煤和无烟煤进行了50h和30h的气化实验。使用空气作为唯一的气化剂是有问题的，其结果是温度迅速下降，气体质量恶化，最终导致气化反应停止。使用最佳比例的氧气/空气混合物可产生宝贵的气体。在氧气/空气体积比为4：2的褐煤煤层气化中，产物气中H-2和CO的平均含量分别为23.1%和6.3%，热值为4.18 MJ/m(3)，而在氧气/空气体积比为2：3的硬煤气化中，产物气中H-2和CO的平均含量分别为18.7%和17.3%，产物气热值为5.74 MJ/m(3)。(C)2010爱思唯尔有限公司。保留所有权利。
The main goal of the study presented in the paper was an experimental comparison of the underground lignite and hard coal seams air gasification simulated in the ex situ reactor. In the study lignite and hard coal were gasified with oxygen, air and oxygen enriched air as gasification agents in the 50- and 30-h experiments, respectively, with an intrinsic coal and strata moisture content as a steam source. Application of air as a sole gasification agent was problematic for a resulting rapid decrease in temperatures, deterioration of gas quality and, finally, cessation of gasification reactions. Use of oxygen/air mixture of an optimum ratio led to valuable gas production. In lignite seam gasification with oxygen/air (of 4:2 volume ratio) the average H-2 and CO contents in product gas were 23.1 vol.% and 6.3 vol.%, respectively, and the calorific value was 4.18 MJ/m(3), whereas in hard coal gasification with the oxygen/air ratio (of 2:3 volume ratio) the average H-2 and CO contents in produced gas were 18.7 vol.% and 17.3 vol.%, respectively, and product gas calorific value equaled 5.74 MJ/m(3). (c) 2010 Elsevier Ltd. All rights reserved.