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当前中国能源产业特别是煤化工行业在发展过程中需要消耗大量的淡水资源,同时排放了大量的CO_2,严重挑战中国的气候变化应对和节能减排目标的实现。CO_2捕集封存联合增强地下深部咸卤水开采及综合利用(CCS-EWR)技术可以实现在封存CO_2的同时,能将地下深部咸水引入到地面实现咸水的资源化,该技术在煤化工行业具有巨大的应用潜力。本文选取鄂尔多斯地区煤化工行业的百万吨级的CO_2捕集与封存示范项目,探讨CCS-EWR全流程项目的经济可行性。案例研究表明,该技术能够有效抵消CCS技术高昂的成本,在我国中西部严重缺水地区可大规模应用,在高效利用情况下经济上也具有一定的可行性。
At present, China’s energy industry, especially the coal chemical industry, needs to consume a large amount of freshwater resources in the development process and discharge a large amount of CO 2 at the same time. This poses a serious challenge to China’s climate change response and the goal of energy conservation and emission reduction. Combining CO_2 Capture and Sequestration to Enhance Underground Saline brine exploitation and comprehensive utilization (CCS-EWR) technology can realize the reclamation of saltwater in the deep underground saltwater to the ground while sequestering CO_2. This technology is widely used in the coal chemical industry Has great potential for application. This paper selects one million tons of CO2 capture and storage demonstration project in the coal chemical industry in Ordos, and discusses the economic feasibility of the CCS-EWR whole-process project. Case studies show that this technology can effectively offset the high cost of CCS technology and can be applied on a large scale in severe water-scarce areas in central and western China. It is also economically feasible to use this technology in an efficient manner.