CAJ | 학술논문

CO2在地下深部封存可有效减少燃烧化石燃料产生的温室气体向大气层的排放。然而，现在碳捕集成本高、能耗大，在CO2捕集与封存( CCS)链条中碳捕集成本占60％，成为实施CCS的瓶颈。煤化工厂排放高浓度CO2可能为中国实现全链条的CCS提供早期的机会。目前经过国家发改委批准的煤化工企业排放的高浓度CO2总量已达亿吨规模，如果这些企业能够实现CO2封存，对于中国减少温室气体排放将具有重要意义。中国的沉积盆地拥有适合CO2地质封存的储盖层组合，其中有些油田适合利用CO2驱油来提高石油采收率( EOR)，高浓度CO2排放源靠近封存场地将有效减少运输成本和工程操作的复杂性。高浓度CO2气源与EOR或深部咸水层封存的耦合将给中国提供在全球率先实现碳捕集、利用与封存( CCUS)的机会。
CO2재지하심부봉존가유효감소연소화석연료산생적온실기체향대기층적배방。연이，현재탄포집성본고、능모대，재CO2포집여봉존( CCS)련조중탄포집성본점60％，성위실시CCS적병경。매화공엄배방고농도CO2가능위중국실현전련조적CCS제공조기적궤회。목전경과국가발개위비준적매화공기업배방적고농도CO2총량이체억둔규모，여과저사기업능구실현CO2봉존，대우중국감소온실기체배방장구유중요의의。중국적침적분지옹유괄합CO2지질봉존적저개층조합，기중유사유전괄합이용CO2구유래제고석유채수솔( EOR)，고농도CO2배방원고근봉존장지장유효감소운수성본화공정조작적복잡성。고농도CO2기원여EOR혹심부함수층봉존적우합장급중국제공재전구솔선실현탄포집、이용여봉존( CCUS)적궤회。
Deep geological storage of CO2 can provide an essential solution to mitigate greenhouse gas emissions from the continuous use of fossil fuels.However,the cost and energy consumption of CO2 capture is high at present.About 60% of carbon capture and storage(CCS) cost is for the carbon capture which causes a bottleneck in advancement of CCS in China.High levels of CO2 from coal chemical plants pro-vides sufficient CO2 for full-chain CCS implementation.The total amount of high concentration CO2 that will be emitted( or is being emit-ted) by the coal chemical factories approved by the National Development and Reform Commission is up to hundred million tones per year. If all projects could store CO2 underground,it would be of great significance for mitigating greenhouse gas emissions.Basins located in North China are characterized by several sets of reservoir-caprock strata which is suitable for CO2 storage.Some oil fields are potentially suitable for CO2 enhanced oil recovery(EOR).The short distance between the high concentration CO2 sources and potential storage sites reduce transportation cost and operational.So high purity sources coupled with EOR or aquifer storage offer China the opportunity to accomplish beneficial CCUS globally.