Journal
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
Volume 33, Issue 3, Pages 1431-1440Publisher
KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.1007/s12206-019-0245-x
Keywords
Carbon capture; MEA process; Gas turbine; Natural gas combine cycle; Semi-closed oxy-combustion combined cycle
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Funding
- Ministry of Trade, Industry & Energy (MOTIE, Korea) under Industrial Technology Innovation Program [10052280]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10052280] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Carbon capture and storage (CCS) technology has been studied actively in recent years to address global warming. This paper aimed to make a consistent comparison of different capture technologies applied to the natural gas-fired combined cycle (NGCC). Multiple power plant systems based on a standard NGCC using three different carbon capture technologies (post-combustion, pre-combustion, and oxycombustion) were proposed, and their net performance was compared. The optimal pressure ratio of the oxy-combustion technology system was obtained. The variations in the net cycle performance of the three systems were compared using the specific CO2 capture. The net power of the post-combustion capture scheme is lower than that of all other systems, but it has the highest efficiency. However, its biggest disadvantage is a much lower CO2 capture rate than the oxy-combustion capture which exhibits nearly 100 % capture rate. The conclusion is that the oxy-combustion capture would provide both the highest net efficiency and power output if a high capture rate of over 92 % was required.
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