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Techno-economic assessment of post-combustion CO2 capture using aqueous piperazine at different flue gas compositions and flowrates via a general optimization methodology
Highlights A two-step techno-economic optimization for CO2 capture with solvents is developed. We use equivalent work and productivity as proxies of OpEx and CapEx, respectively. Aqueous piperazine is applied to industrial CO2 point sources for CO2 capture. Reboiler duties are below 3 for absorber heights below 10 m. Cost of CO2 generated to determine the optimal capture efficiency and plant size.
Abstract An overall techno-economic assessment of a post-combustion CO2 capture process using aqueous piperazine is presented. A two-step techno-economic optimization approach is developed and implemented. First, two-objective technical optimization problems are solved at different combinations of CO2 capture efficiencies and CO2 concentrations in the flue gas, which aim at minimizing the specific equivalent work while maximizing the volume-based productivity of the capture process. Increasing minimum specific reboiler duties between 2.4 and 2.9 are obtained for decreasing flue gas CO2 concentrations between 33 and 4 vol%, on a dry basis, with absorber packing heights below 10 m. Then, costs are computed at the technical optimal conditions as a function of the CO2 capture efficiency, flue gas flowrate and CO2 concentration. As a result, maps of minimum cost of CO2 captured, of minimum cost of CO2 avoided, and of minimum cost of CO2 generated by the CO2 point source are obtained, as well as of the associated optimal operating conditions and performance indicators of the capture process, which allow to assess the economic feasibility and performance of the capture process under different cost scenarios and assumptions when applied to different flue gas compositions and flowrates typical of industrial CO2 intensive point sources.
Techno-economic assessment of post-combustion CO2 capture using aqueous piperazine at different flue gas compositions and flowrates via a general optimization methodology
Highlights A two-step techno-economic optimization for CO2 capture with solvents is developed. We use equivalent work and productivity as proxies of OpEx and CapEx, respectively. Aqueous piperazine is applied to industrial CO2 point sources for CO2 capture. Reboiler duties are below 3 for absorber heights below 10 m. Cost of CO2 generated to determine the optimal capture efficiency and plant size.
Abstract An overall techno-economic assessment of a post-combustion CO2 capture process using aqueous piperazine is presented. A two-step techno-economic optimization approach is developed and implemented. First, two-objective technical optimization problems are solved at different combinations of CO2 capture efficiencies and CO2 concentrations in the flue gas, which aim at minimizing the specific equivalent work while maximizing the volume-based productivity of the capture process. Increasing minimum specific reboiler duties between 2.4 and 2.9 are obtained for decreasing flue gas CO2 concentrations between 33 and 4 vol%, on a dry basis, with absorber packing heights below 10 m. Then, costs are computed at the technical optimal conditions as a function of the CO2 capture efficiency, flue gas flowrate and CO2 concentration. As a result, maps of minimum cost of CO2 captured, of minimum cost of CO2 avoided, and of minimum cost of CO2 generated by the CO2 point source are obtained, as well as of the associated optimal operating conditions and performance indicators of the capture process, which allow to assess the economic feasibility and performance of the capture process under different cost scenarios and assumptions when applied to different flue gas compositions and flowrates typical of industrial CO2 intensive point sources.
Techno-economic assessment of post-combustion CO2 capture using aqueous piperazine at different flue gas compositions and flowrates via a general optimization methodology
Pérez-Calvo, José-Francisco (author) / Mazzotti, Marco (author)
2022-01-18
Article (Journal)
Electronic Resource
English
CO<inf>2</inf> Capture , Aqueous piperazine , Model-based process optimization , Techno-economic assessment , Industrial CO<inf>2</inf> point sources , AIC , Annualized Investment Cost , AMC , Annual Maintenance Cost , AOC , Annualized Operating Cost , BPC , Balance of the Plant Costs , CAC , CO<inf>2</inf> Avoidance Cost , CCS , Carbon Capture and Storage , CEPCI , Chemical Engineering Plant Cost Index , CGC , CO<inf>2</inf> Generation Cost , CO<inf>2</inf>-WW , CO<inf>2</inf> Water-Wash , CRF , Capital Recovery Factor , DCC , Direct Contact Cooler , EIC , Equipment Installation Costs , EPC , Equipment Purchase Costs , FG , Flue Gas , FG-WW , Flue Gas Water-Wash , HETP , Height of an Equilibrium Theoretical Plate , IDC , Indirect Costs , MEA , Monoethanolamine , MOPSO , Multi-Objective Particle Swarm Optimization , PZ , Piperazine , R/L HX , Rich/Lean Heat Exchanger , RSS , Rich Solvent Splitting , TAC , Total Annualized Cost , TIC , Total equipment Installed Costs , TPC , Total Plant Cost