Evaluation and matching of CCS source and sink potential of various geologic bodies in Huainan Coalfield

The evaluation and matching of CCUS source and sink potential of various geological bodies in Huainan coalfield is of great significance to the engineering popularization of CO2–ECBM technology. In this study, various types of geological bodies, such as deep unworkable coal seam, residual coal body and goaf area, in Huainan coalfield were taken as the research object. Firstly, the evaluation methods of CO2 geologic storage potential of various geologic bodies were discussed. Secondly, the CO2 storage potential of various geologic bodies was analyzed. Then, based on the lowest cost objective function and improved mileage saving method, the source and sink matching research of CO2 geological storage was carried out, and the pipe network design was optimized. Finally, based on the three-step thinking, the design idea of CCS source and sink network planning was proposed. The results show that the total annual CO2 emissions of coal-fired power plants are 58.8 million tons. The total CO2 geological storage potentia