Improvement of resource recovery rate for underground coal gasification through the gasifier size management
Improvement of resource recovery rate for underground coal gasification through the gasifier size management
复制标题
通过气化炉规模管理提高煤炭地下气化资源回收率
DOI：
10.1016/j.jclepro.2020.120911
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发表时间：
2020-06
影响因子：
11.1
通讯作者：
Yaqiang Gong
中科院分区：
文献类型：
--
作者：
Huaizhan Li;Jianfeng Zha;Guangli Guo;Nanshan Zheng;Yaqiang Gong
煤炭地下气化是煤炭工业未来发展的重要技术方向之一。目前，已先后进行了多项不同工艺的小型煤炭地下气化工业试验，为进一步的大规模试验和生产奠定了坚实的基础。但随着煤炭地下气化试验规模的扩大和推广应用，必须考虑围岩稳定性和地表沉降问题。此外，如何针对不同的地质条件进行地下气化生产设计，提高资源回收率，也是一个亟待解决的瓶颈问题。针对这一问题，分析了无竖井煤炭地下气化工业性试验资源回收率的现状。结合煤炭地下气化的工艺特点，提出了考虑气化炉安全和地面沉降的提高煤炭地下气化资源回收率的方法。同时，揭示了气化炉参数对煤柱稳定性和地表沉陷的影响规律。研究结果表明，在保证地下气化炉安全生产和控制地表沉降的前提下，无竖井煤炭地下气化的资源回收率可从40%左右提高到60%以上。这些研究成果对于提高煤炭地下气化的经济效益，促进煤炭地下气化产业化、规模化生产具有重要意义。
Underground coal gasification is one of the most vital technical directions for the future development of the coal industry. Currently, numerous small-scale underground coal gasification industrial tests of different processes have been successively conducted, which has laid a solid foundation for further large-scale experiment and production. However, with the expansion of underground coal gasification experiment scale and promoting application, the surrounding rock stability and surface subsidence must be considered. Moreover, there exists a bottleneck problem, which should be solved urgently, that how to design underground gasification production for different geological conditions to improve resource recovery rate. To solve this issue, this paper analyzed the existing situation of resource recovery rate of industrial experiment for underground coal gasification without shaft. Also, the improvement method for resource recovery rate of underground coal gasification with considering of the gasifier safety and surface subsidence was proposed in combination with the technology characteristics of underground coal gasification. Meanwhile, the influence rule of gasifier parameters on the coal pillars stability and surface subsidence was revealed. From the findings in this research, it can be expected that the resource recovery rate of underground coal gasification without shaft can be increased from about 40% to more than 60% under the both conditions of the safe production of underground gasifiers and surface subsidence control. These research results are of great significance for enhancing the economic benefits of underground coal gasification and promoting its industrialization and large-scale production.
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影响因子：
2.8
作者：
Huaizhan Li;G. Guo;Jianfeng Zha;Yanqing He;Zhiyong Wang;S. Qin
通讯作者：
Huaizhan Li;G. Guo;Jianfeng Zha;Yanqing He;Zhiyong Wang;S. Qin
DOI：
--
发表时间：
2013
期刊：
Coal science and technology
影响因子：
--
作者：
Xiong Jian-fen;Enn Coal
通讯作者：
Xiong Jian-fen;Enn Coal
DOI：
10.1007/s10064-015-0809-7
发表时间：
2016-08
影响因子：
4.2
作者：
Huaizhan Li;G. Guo;Jianfeng Zha;Yafei Yuan;Bin-chen Zhao
通讯作者：
Huaizhan Li;G. Guo;Jianfeng Zha;Yafei Yuan;Bin-chen Zhao
影响因子：
9
作者：
Khadse, Anil;Qayyumi, Mohammed;Aghalayam, Preeti
通讯作者：
Aghalayam, Preeti
DOI：
--
发表时间：
1981-04
期刊：
--
影响因子：
--
作者：
R. Hill;M. J. Shannon
通讯作者：
R. Hill;M. J. Shannon