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Techno-economic evaluation of BECCS via chemical looping combustion of Japanese woody biomass
Highlights Techno-economic analysis of entire BECCS-CLC chain for Japanese woody biomass. Detailed CLC reactor modeling revealed limiting factors for fuel and air reactor. BECCS-CLC reduces carbon dioxide removal costs by 17% over conventional process. CLC cheapest CO2 avoidance option when replacing power gen. with <0.35 kgCO2/kWh.
Abstract The use of Japanese woody biomass for negative emissions via combustion and subsequent carbon capture and storage (BECCS) is investigated. To this end a novel unmixed combustion technology, Chemical Looping Combustion (CLC) is benchmarked against a conventional process with post-combustion capture. The analysis is based on detailed modeling of fluidized-bed CLC reactors of different fuel-input scales. The costs of the other process steps in the BECCS chain were evaluated from literature data. This techno-economic analysis identified CO2 liquefaction and transport by tanker trucks as the cheapest CO2 transport option. The use of CLC resulted in cost savings of 17% of the entire BECCS cost per tonne of CO2 captured, and the cost-optimal plant size was 50 MWth. The cost of CO2 avoided compares favorably with other low-carbon technologies if the CO2 intensity of the generation capacity that is replaced is below 0.35 kgCO2/kWh (cf. current Japanese grid average ∼0.53 kgCO2/kWh).
Techno-economic evaluation of BECCS via chemical looping combustion of Japanese woody biomass
Highlights Techno-economic analysis of entire BECCS-CLC chain for Japanese woody biomass. Detailed CLC reactor modeling revealed limiting factors for fuel and air reactor. BECCS-CLC reduces carbon dioxide removal costs by 17% over conventional process. CLC cheapest CO2 avoidance option when replacing power gen. with <0.35 kgCO2/kWh.
Abstract The use of Japanese woody biomass for negative emissions via combustion and subsequent carbon capture and storage (BECCS) is investigated. To this end a novel unmixed combustion technology, Chemical Looping Combustion (CLC) is benchmarked against a conventional process with post-combustion capture. The analysis is based on detailed modeling of fluidized-bed CLC reactors of different fuel-input scales. The costs of the other process steps in the BECCS chain were evaluated from literature data. This techno-economic analysis identified CO2 liquefaction and transport by tanker trucks as the cheapest CO2 transport option. The use of CLC resulted in cost savings of 17% of the entire BECCS cost per tonne of CO2 captured, and the cost-optimal plant size was 50 MWth. The cost of CO2 avoided compares favorably with other low-carbon technologies if the CO2 intensity of the generation capacity that is replaced is below 0.35 kgCO2/kWh (cf. current Japanese grid average ∼0.53 kgCO2/kWh).
Techno-economic evaluation of BECCS via chemical looping combustion of Japanese woody biomass
Keller, Martin (Autor:in) / Kaibe, Kenji (Autor:in) / Hatano, Hiroyuki (Autor:in) / Otomo, Junichiro (Autor:in)
International Journal of Greenhouse Gas Control ; 83 ; 69-82
24.01.2019
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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