Which will be a promising route among integrated CO2 capture and conversion to valuable chemicals.

• Simulations of iCCC technology with various chemical products are developed. • Fluidized DFM particles circulate in parallel CO 2 capture and conversion towers. • Levelized criteria provide a benchmark for techno-economic analysis of iCCC-X. • iCCC-Methanol performs best overall in profits, energy consumption, and CO 2 emission. • Techno-economic performances of iCCC depend much on the costs of H 2 production. Facing challenges of industrial decarbonization, the integrated CO 2 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 CO 2 emission, and economic feasibility. The effects of technical processes, energy sources, prices of H 2 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 the best overall performance with a considerable economic profit of 84.5 $/t CO2 when taking coal as the energy source; moreover, powered by wind, the lowest energy consumption of 4.2 GJ/t CO2 and negative net CO 2 emission of −0.8 t CO2 /t CO2 are achieved, demonstrating a promising route for future industrial decarbonizations. [ABSTRACT FROM AUTHOR]