深部煤炭化学开采技术

发布时间：2019-06-24 22:26

【摘要】：为了探索地下煤炭开采技术革命的新方法,提出地下煤炭化学开采的基本概念,并将其归纳为3种化学开采方法,即地下气化、地下热解和生物溶解.首次提出了煤炭化学开采技术架构、工艺系统和需要突破的关键技术:1)地下煤炭盾构-气化协同工艺及装备系统,合成燃气用于整体煤气化联合循环(IGCC)发电及CO_2埋藏的技术思路,地下气化污染物抑制及稳定产气控制方法;2)基于聚光太阳能供热和干热岩集热供热的地下煤炭原位干馏技术,基于电磁感应加热和微波辐射加热的地下煤炭原位热解技术;3)基于微生物溶煤的地下煤炭原位生物开采技术.国内外研究表明:与传统井工煤矿生产和发电系统相比,煤炭地下气化的投资降低60%,生产成本降低70%,煤炭资源回采率提高到95%,土地复耕成本降低80%;发电热效率提高50%,发电成本约为0.15元/(kW·h).可以预见,化学开采将成为高回收、低损害、超低排放、零死亡的煤炭开发技术革命的新方向.
[Abstract]:In order to explore the new method of underground coal mining technology revolution, the basic concept of underground coal chemical mining is put forward, and it is summarized into three chemical mining methods, namely underground gasification, underground pyrolysis and biological dissolution. For the first time, the technical framework, process system and key technologies that need to be broken through in coal chemical mining are put forward for the first time: 1) the coordinated technology and equipment system of underground coal shield and gasification, the technical idea of using synthetic gas for (IGCC) power generation and CO_2 burying in the whole coal gasification combined cycle, the suppression of pollutants in underground gasification and the control method of stable gas production; 2) in situ dry distillation technology of underground coal based on concentrated solar heating and dry hot rock heat collection heating, in situ pyrolysis technology of underground coal based on electromagnetic induction heating and microwave radiation heating, 3) in situ biological mining technology of underground coal based on microbial dissolved coal. The research at home and abroad shows that compared with the traditional well coal mine production and power generation system, the investment of underground coal gasification is reduced by 60%, the production cost is reduced by 70%, the recovery rate of coal resources is increased to 95%, the cost of land restoration is reduced by 80%, the thermal efficiency of power generation is increased by 50%, and the cost of power generation is about 0.15 yuan / (kW 路h). It can be predicted that chemical mining will become a new direction of coal development technology revolution with high recovery, low damage, ultra-low emission and zero death.
【作者单位】：中国矿业大学;
【基金】：国家重点基础研究发展计划(973)项目(2014CB046300)
【分类号】：TD82

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