石油与天然气化工2026，Vol.55Issue(3)：76-89,14.DOI:10.3969/j.issn.1007-3426.2026.03.009
光伏耦合驱动分布式直接空气捕集CO2经济性分析
Techno-economic analysis of distributed direct air capture of CO2 with photovoltaic-coupled driven systems
摘要
Abstract
Objective This study aims to address the intermittency and high energy consumption challenges of direct air capture(DAC)of CO2 for low-concentration sources.Method Four continuous DAC systems with different photovoltaic(PV)-coupled power supply configurations were developed for distributed carbon capture in the oil and gas industry,taking a PV project in the Qaidam Basin as a case study.Economic indicators,including levelized cost of electricity(LCOE)and levelized cost of DAC(LCOD),were calculated.An in-depth sensitivity analysis was then conducted to assess the impact of key factors,such as annual solar irradiance,PV capacity,sorbent cost,and capture energy intensity,on system performance.Result First,compared to PV-battery,PV-thermal,and PV-grid systems,the PV system coupled with both thermal and battery energy storage(PV-TES-BESS)achieves an LCOD of 265 USD/t.Although slightly higher than that of the PV-grid system,it provides 100%renewable power supply and lifecycle carbon negativity,representing a more competitive solution.Second,assuming an annual 5%improvement in PV technology over the next decade,the LCOD is expected to decrease by approximately half,and system scale-up will significantly reduce unit costs.Third,the LCOD exhibits linear sensitivity to capture energy intensity,ranging from 265 to 946 USD/t,as the energy intensity increases from 1 400 to 5 000 kW·h/t.Conclusion These findings demonstrate the significant economic potential of off-grid PV-coupled driven continuous DAC systems through reductions in energy intensity and technological advancements,providing a distributed green-power-based carbon capture solution for the low-carbon transition of oil and gas fields.关键词
连续DAC系统/平准化碳捕集成本/光伏耦合驱动/技术经济分析/敏感性分析Key words
direct air capture(DAC)/levelized cost of DAC/photovoltaic coupling/techno-economic analysis/sensitivity analysis引用本文复制引用
王芳,张忠海,徐学林,穆金池,冉蕾,郑衍,周莹..光伏耦合驱动分布式直接空气捕集CO2经济性分析[J].石油与天然气化工,2026,55(3):76-89,14.基金项目
四川省科技计划项目"基于光伏驱动的PEI/COF多孔材料创制及高效空气捕集CO2与转化关键技术",(2026YFHZ0246) （2026YFHZ0246）
国家自然科学基金"靶向成核调控水合物定向生长模式增强氧化石墨烯碳捕集烟道气CO2机制研究"(52503389),工业排放气综合利用国家重点实验室开放基金"二氧化碳加氢制甲醇催化材料构建与性能研究"(SKLIVGR-2024-02) （52503389）
