Techno-Economic Feasibility Study of the Commercial-Scale Oxy-CFB Carbon Capture System in Turkey

Authors : Tuba COŞKUN, Mehmet ÖZKAYMAK, Hasancan OKUTAN

Pages : 45-56

Doi:10.2339/politeknik.674619

View : 37 | Download : 9

Publication Date : 2021-03-01

Article Type : Research Paper

Abstract :Oxy-fuel combustion is a promising technology for the reduction of carbon dioxide emissions, in coal-fired power plants that allow the clean use of fossil fuels. Circulating fluidized bed insert ignore into journalissuearticles values(CFB); boilers are one of the power generation technologies that can use oxy-fuel combustion design successfully. The purpose of this paper is to perform the techno-economic feasibility analysis of the commercial-scale oxy-fuel combustion circulating fluidized bed insert ignore into journalissuearticles values(oxy-CFB); power plant generating 550 MWe net power with a carbon capture rate of 90%. So far, economic analysis of oxy-PC power plants has been studied by researchers at many reports. Nevertheless, the cost of an oxy-CFB power plant has rarely been studied.This is the first study that has used Turkish lignite insert ignore into journalissuearticles values(Orhaneli Coal); in an oxy-CFB carbon capture plant economic analysis. The basic economic performance indicators were investigated. The Models are based on cost scaling and Discounted Cash Flow analysis. Three cases were analyzed: In the first case, A base scenario insert ignore into journalissuearticles values(air-fired CFB plant without CO2 capture); is considered and then based on this baseline scenario the other scenarios are taken into account. The economic viability of transition from the classical air-fired CFB plant system to oxy-CFB with CO2 capture and compression plant is evaluated. The post-combustion monoethanolamine insert ignore into journalissuearticles values(MEA); based CO2 capture system is investigated as a benchmark study to compare oxy-CFB capture system performances. The main applicability parameters such   as cost of electricity insert ignore into journalissuearticles values(COE);, levelized cost of electricity insert ignore into journalissuearticles values(LCOE); and the cost of CO2 capture for each case are calculated. The obtained results indicated that 54% and 52% increase in terms of total plant cost and COE respectively in the oxy-CFB plant when compared to air fired-CFB without carbon capture. Considering the COE, the designed oxy-CFB power plant is greater than the air-fired SC-PC insert ignore into journalissuearticles values(without capture); plant by more than 45% insert ignore into journalissuearticles values(DOE target);. The efficiency penalty for oxy-CFB is 10%. Oxy-CFB plant has a net efficiency 2% point higher than amine-based CO2 capture systems. In amine-based CO2 capture system; The capital costs, LCOE, and cost of CO2 captured are higher than the oxy-CFB plant. The results show that the oxy-CFB power plant has a lower cost for carbon capture compared to amine-based capture plant.
Keywords : Oxy fuel combustion, Circulating Fluidized Bed, carbondioxide capture, levelized cost of electricity, techno economic analysis

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