In-situ Pyrolysis Underground Mining and Quality Improvement Schemes for Rich Oil Coal
Rich oil coal is an important coal based oil and gas resource.Through the analysis of the coal quality characteristics and pyrolysis products in Hanshuiquan,Tiaohu and Baishihu mining areas of Santanghu Coalfield,the feasibility and quality improvement utilization plan of in-situ pyrolysis underground mining of coal in the study area were discussed.The research results indicate that:the performance indicators of the pyrolysis semi-coke products of rich oil coal in Hanshuiquan mining area are good.However,the utilization of rich oil coal in Tiaohu and Baishihu mining areas is limited due to the high ash mass fraction of the semi-coke exceeding the corresponding indicators.Based on the actual situation in the mining area,priority should be given to the development of low-temperature dry distillation of coal and hydrogenation of coal tar to obtain fuel oil and related chemical products,and adopt a cascade utilization model.Based on the structural characteristics and pyrolysis performance of rich oil coal in the research area,a graded utilization model was proposed,which was mainly based on liquefaction,supplemented by gasification,and in situ-carbon fixation.
万方数据
维普
