Coal power plants play an important role in supplying affordable and reliable electricity. It is necessary to develop high-efficiency and low-cost carbon capture (CC) technologies to mitigate the associated global warming. Using H2S-tolerant oxygen transport membranes (OTM) for hydrogen production and CO2 separation can significantly reduce the energy penalty of CC in integrated gasification combined cycle (IGCC) power plants. We carried out system-level analysis to investigate a novel IGCC-CC power plant design using OTMs. We studied the impacts of various operating parameters on the overall efficiency and energy penalty. This novel IGCC-OTM system has an overall efficiency 3.2%-point lower than the same system without CC, much lower 2 than the IGCC with water-gas shift reactors and acid gas removal units (IGCC-WGS) of 6.8%point drop. The specific primary energy consumption for CO2 avoided (SPECCA) of this novel technology is 1.08 MJ kgCO2 -1 , which is 59.4% lower than that of the IGCC-WGS.
Coal power plants play an important role in supplying affordable and reliable electricity. It is necessary to develop high-efficiency and low-cost carbon capture (CC) technologies to mitigate the associated global warming. Using H2S-tolerant oxygen transport membranes (OTM) for hydrogen production and CO2 separation can significantly reduce the energy penalty of CC in integrated gasification combined cycle (IGCC) power plants. We carried out system-level analysis to investigate a novel IGCC-CC power plant design using OTMs. We studied the impacts of various operating parameters on the overall efficiency and energy penalty. This novel IGCC-OTM system has an overall efficiency 3.2%-point lower than the same system without CC, much lower 2 than the IGCC with water-gas shift reactors and acid gas removal units (IGCC-WGS) of 6.8%point drop. The specific primary energy consumption for CO2 avoided (SPECCA) of this novel technology is 1.08 MJ kgCO2 -1 , which is 59.4% lower than that of the IGCC-WGS.
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