Process simulation and economic evaluation of a biomass oxygen fuel circulating fluidized bed combustor with an indirect supercritical carbon dioxide cycle

Jester Lih Jie Ling, Seung Seok Oh, Hyun Jun Park and See Hoon Lee

Renewable and Sustainable Energy Reviews, 2023, vol. 182, issue C

Abstract: In recent years, the utilization of biomass through advanced power technologies has intensified to achieve carbon neutrality. An oxy-fuel circulating fluidized bed combustor of biomass with higher efficiency supercritical carbon dioxide cycle has been developed with the aim of compensating the penalties for carbon capture and storage. The combustor fuelled with waste paper, waste wood, and cow manure, at an input of 200 ton/day is economically evaluated. Waste paper is on the verge of becoming an economically feasible fuel, more so than the other biomass examined. The use of waste paper led to a positive net present value, an internal rate of return of 3.8%, a benefit-cost ratio of 1.025, and a payback period of 17.7 years. Subsequent sensitivity analyses conducted for the waste paper fuelled power plant indicated that the capital cost is the most influential factor; the boiler, supercritical carbon dioxide cycle, and oxygen fuel combustion system were indicated in descending order of related subdivided sensitiveness. Both renewable energy certificate and carbon credit has contributed to the feasible economic of the system, with former one took precedence over later one. Sensitivity from the technical perspective, improvement in air separation unit is likely to greatly improve the economic feasibility of the proposed system. The power consumption of the air separation unit, as well as that of the carbon dioxide compression and purification unit, were highly sensitive to the implementation cost.

Keywords: Biomass combustion; Supercritical carbon dioxide cycle; Oxygen fuel circulating fluidized bed; Techno-economic analysis (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1016/j.rser.2023.113380

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