CPGS国内外研究现状及发电应用进展

Current research status and development of power generation applications of CPGS at home and abroad

CPGS结合了CO_(2)地质封存和深部地热开发2种技术的优势,在实现地热能开采的同时,也对CO_(2)进行了地质封存,从而实现了温室气体减排和可再生能源利用技术的结合,CO_(2)的排放在最大限度上减少。介绍了增强型地热系统和CO_(2)羽流地热系统,对比分析了水和CO_(2)作为传热工质的优缺点,同时详细地介绍了CO_(2)羽流地热系统的国内外研究现状以及研究需要改进之处。最后介绍了3种CO_(2)羽流地热系统发电应用技术,即热伏发电、有机朗肯循环发电技术、基于以太阳能为辅助热源的CPGS-sCO_(2)布雷顿联合循环发电技术。

CPGS combines the advantages of CO_(2) geological storage and deep geothermal development technologies to achieve the geological storage of CO_(2) while mining geothermal energy,thereby achieving a combination of greenhouse gas emission reduction and renewable energy utilization technology,and minimizing CO_(2) emissions to the greatest extent possible.In this paper,the enhanced geothermal system and CO_(2) plume geothermal system were introduced,and the advantages and disadvantages of water and CO_(2) as heat transfer working fluids were compared and analyzed.At the same time,the research status of CO_(2) plume geothermal system at home and abroad and the research needs to be improved were introduced in detail.In the end,three kinds of CO_(2) plume geothermal system power generation application technologies were introduced,namely,thermal power generation,organic Rankine cycle power generation technology,and CPGS-sCO_(2) Brayton combined cycle power generation technology based on solar energy as auxiliary heat source.