Environmental and Economic Evaluation of In-situ Pyrolysis of Tar-rich Coal

As a strategic coal-based oil and gas resource integrating the properties of coal, oil and gas, the in-situ pyrolysis technology of tar-rich Coal is an important path to realize the clean and efficient utilization of coal, alleviate the contradiction between oil and gas supply and demand, and help achieve the “double carbon” goals. Taking the in-situ pyrolysis technology of tar-rich Coal as the research object, this paper systematically expounds the technical principles and development status of in-situ pyrolysis of tar-rich Coal, comprehensively analyzes the environmental impacts during the in-situ pyrolysis process from four dimensions of atmosphere, water, soil and ecology, and constructs an economic evaluation system covering investment, cost, income and uncertainty. Combined with the existing pilot test data and research results, the degree of environmental impact and economic feasibility are quantified. Finally, optimization strategies that balance environmental friendliness and economic efficiency are proposed, providing theoretical support and practical reference for the industrial promotion of in-situ pyrolysis technology of tar-rich Coal.