Facing challenges of industrial decarbonization, the integrated CO2 capture and conversion (iCCC) technology attracts intensive attention but lacks a benchmark techno-economic analysis to figure out the most promising route among intricate processes and various energy sources. Herein, based on the design and simulation of four novel iCCC-X (X = Syngas, Methane, Methanol, Olefins) technologies for the same flue gas treatment, we propose a benchmark for techno-economic analysis by levelized criteria in terms of technical practicability, energy consumption, net CO2 emission, and economic feasibility. The effects of technical processes, energy sources, prices of H2 and products, carbon tax, and operating conditions on the mass and energy balance, and hence the techno-economic performances are comprehensively investigated. Among them, the iCCC-Methanol exhibits thebest overall performance with aconsiderable economic profit of 84.5 $/tCO2 when taking coal as the energy source; moreover, powered by wind, the lowest energy consumption of 4.2 GJ/tCO2 and negative net CO2 emission of −0.8 tCO2/tCO2 are achieved, demonstrating a promising route for future industrial decarbonizations.

中文翻译：

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这将是一条很有前途的 CO2 综合捕获和转化为有价值化学品的途径


面对工业脱碳的挑战，集成 CO2 捕获和转化 （iCCC） 技术引起了广泛关注，但缺乏基准技术经济分析，无法在复杂的过程和各种能源中找出最有前途的路线。在此，基于对四种新型 iCCC-X（X = 合成气、甲烷、甲醇、烯烃）技术进行相同烟气处理的设计和模拟，我们提出了一个基准，通过平准化标准在技术实用性、能耗、二氧化碳净排放和经济可行性方面进行技术经济分析。全面研究了技术过程、能源、H2 和产品价格、碳税和运行条件对质量和能量平衡的影响，从而全面研究了技术经济性能。其中，iCCC-甲醇整体性能最佳，以煤炭为能源时，经济利润为 84.5 美元/吨二氧化碳;此外，由风能提供动力，实现了 4.2 GJ/tCO2 的最低能耗和 -0.8 tCO2/tCO2 的负净排放，为未来的工业脱碳指明了一条充满希望的道路。