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Thermo-economic analyses of IGCC power plants employing warm gas CO2 separation technology

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  • Rosner, Fabian
  • Chen, Qin
  • Rao, Ashok
  • Samuelsen, Scott
  • Jayaraman, Ambal
  • Alptekin, Gokhan

Abstract

Integrated gasification combined cycle (IGCC) power plant with dual-stage Selexol™ for carbon capture is compared to pressure swing adsorption (PSA)-based warm gas CO2 capture. Capture with Selexol™ was limited to 83.4% due to high syngas CH4 content while the efficiency was 31.11% HHV resulting in a 1st year cost of electricity (COE) of 148.6 $/MWh. Carbon capture can be increased to 88.6% and efficiency to 33.76% HHV with warm gas CO2 removal. When holding the same carbon capture level as the Selexol™ case, efficiency is increased to 34.20% HHV and after further optimization of the water gas shift (WGS) reactors to 35.63% HHV leading to a lower COE of 127.2 $/MWh. Reaction kinetic models are developed and applied for optimization of WGS reactors to convert syngas CO to CO2. Cost for warm gas carbon capture reduced to 47.5 $/tonne from 66.0 $/tonne for IGCC without carbon capture while CO2 avoided cost reduced from 89.4 $/tonne to 54.3 $/tonne. Carbon capture cost dropped from 88.0 $/tonne to 72.7 $/tonne while the CO2 avoided cost decreased from 112.2 $/tonne to 78.3 $/tonne over supercritical boiler plant without carbon capture. Furthermore, warm gas cleanup lowered the specific net water withdrawal/usage by 13.4%.

Suggested Citation

  • Rosner, Fabian & Chen, Qin & Rao, Ashok & Samuelsen, Scott & Jayaraman, Ambal & Alptekin, Gokhan, 2019. "Thermo-economic analyses of IGCC power plants employing warm gas CO2 separation technology," Energy, Elsevier, vol. 185(C), pages 541-553.
    • Handle: RePEc:eee:energy:v:185:y:2019:i:c:p:541-553
    DOI: 10.1016/j.energy.2019.07.047
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    References listed on IDEAS

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    1. Moioli, Stefania & Giuffrida, Antonio & Romano, Matteo C. & Pellegrini, Laura A. & Lozza, Giovanni, 2016. "Assessment of MDEA absorption process for sequential H2S removal and CO2 capture in air-blown IGCC plants," Applied Energy, Elsevier, vol. 183(C), pages 1452-1470.
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    2. Baraiya, Nikhil A. & Ramanan, Vikram & Nagarajan, Baladandayuthapani & Vegad, Chetankumar S. & Chakravarthy, S.R., 2023. "Dynamic mode decomposition of syngas (H2/CO) flame during transition to high-frequency instability in turbulent combustor," Energy, Elsevier, vol. 263(PD).
    3. Yang, Ming-Ke & Han, Yu & Zou, En-Bao & Chen, Wan & Peng, Xiao-Wan & Dong, Bao-Can & Sun, Chang-Yu & Liu, Bei & Chen, Guang-Jin, 2020. "Separation of IGCC syngas by using ZIF-8/dimethylacetamide slurry with high CO2 sorption capacity and sorption speed but low sorption heat," Energy, Elsevier, vol. 201(C).
    4. Ren, Siyue & Feng, Xiao & Wang, Yufei, 2021. "Emergy evaluation of the integrated gasification combined cycle power generation systems with a carbon capture system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 147(C).
    5. Rosner, Fabian & Samuelsen, Scott, 2022. "Thermo-economic analysis of a solid oxide fuel cell-gas turbine hybrid with commercial off-the-shelf gas turbine," Applied Energy, Elsevier, vol. 324(C).
    6. Chen, Shiyi & Zhou, Nan & Wu, Mudi & Chen, Shubo & Xiang, Wenguo, 2022. "Integration of molten carbonate fuel cell and chemical looping air separation for high-efficient power generation and CO2 capture," Energy, Elsevier, vol. 254(PA).

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