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深部煤炭原位气化开采关键技术及发展前景
作者姓名:刘淑琴  畅志兵  刘金昌
作者单位:中国矿业大学(北京)化学与环境工程学院,北京 100083
基金项目:北京市科委能源与材料领域应用技术协同创新Z201100004520012中国矿业大学(北京)越崎杰出学者2020JCB02
摘    要:我国深部煤炭资源储量丰富.煤炭地下气化可将其转化为燃气输出到地面,是深部煤炭原位流态化开采的重要途径.本文介绍了煤炭地下气化技术(UCG)的发展历程、技术现状以及中深部煤炭地下气化典型案例,基于现代煤炭地下气化技术体系剖析了深部煤炭地下气化的关键技术及技术攻关方向,展望了以天然气生产为目标的深部煤炭气化开采前景.UCG...

关 键 词:深部煤炭  原位开采  煤炭地下气化  可控移动注入  控制后退注入点
收稿时间:2021-03-07

Key technologies and prospect for in-situ gasification mining of deep coal resources
Affiliation:School of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Abstract:China has rich reserves of deep coal resources, and underground coal gasification can transform coal into gas and transport it to the ground, which is an important way for in-situ fluidized mining of deep coal.This article introduces the development history and technical status of underground coal gasification technology (UCG), as well as typical cases of underground coal gasification in the middle and deep parts.Based on the modern underground coal gasification technology system, the key technologies and technical research directions of deep underground coal gasification was analyzed and the prospect of deep coal gasification mining with the goal of natural gas production was outlooked.The development trend of UCG is from the mine type to the drilling type, from shallow coal seams to deep coal seams, from single power generation to comprehensive utilization.The practice of UCG in the middle and deep coal seams has verified the technical feasibility.The key technologies of deep underground coal gasification mainly include geological evaluation and scientific site selection, gasifier construction, deep coal seam high-pressure ignition, controllable mobile injection and deep fire zone geophysical detection.Deep coal gasification to produce natural gas can not only realize the clean and efficient use of deep coal resources, but also solve the contradiction between supply and demand caused by the increase in natural gas consumption.
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