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Coal-fired oxy-fuel power unit – Process and system analysis

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  • Liszka, M.
  • Ziębik, A.

Abstract

As oxy-fuel power generation is currently on the pre-demonstration stage of development many studies dealing with optimization and simulation aspects are still in progress. This paper is focused on the development of a simulation model of the integrated oxy-fuel system and cumulative energy analysis of an oxy-unit operation in separated national economy. The analyzed oxy-fuel system consists of a steam boiler, steam cycle, air separation unit, as well as a CO2 purification and compression island. The built model is based on physical relations. It has been developed as a set of modules modelling isolated devices (e.g. combustion chamber or flue gas dehumidifier). Interconnections between these devices can be easily changed, which permits to analyse different oxy-fuel structures and operating parameters. The simulation model has been partially verified on the basis of literature data. Results of oxy fuel energy analysis have been presented for one selected structure and compared with an air combustion power unit, assuming the same steam cycle parameters. For both cases indices of cumulative primary energy consumption have been calculated. The obtained results show that the increase of oxy-fuel primary energy consumption (compared with air-based combustion) can be significantly reduced if by-produced nitrogen will be used for external applications.

Suggested Citation

  • Liszka, M. & Ziębik, A., 2010. "Coal-fired oxy-fuel power unit – Process and system analysis," Energy, Elsevier, vol. 35(2), pages 943-951.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:2:p:943-951
    DOI: 10.1016/j.energy.2009.07.007
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    Cited by:

    1. Chen, Shiyi & Yu, Ran & Soomro, Ahsanullah & Xiang, Wenguo, 2019. "Thermodynamic assessment and optimization of a pressurized fluidized bed oxy-fuel combustion power plant with CO2 capture," Energy, Elsevier, vol. 175(C), pages 445-455.
    2. Li, Yueh-Heng & Chen, Guan-Bang & Lin, Yi-Chieh & Chao, Yei-Chin, 2015. "Effects of flue gas recirculation on the premixed oxy-methane flames in atmospheric condition," Energy, Elsevier, vol. 89(C), pages 845-857.
    3. Kotowicz, Janusz & Michalski, Sebastian, 2016. "Thermodynamic and economic analysis of a supercritical and an ultracritical oxy-type power plant without and with waste heat recovery," Applied Energy, Elsevier, vol. 179(C), pages 806-820.
    4. Lai, ZhiYi & Ma, XiaoQian & Tang, YuTing & Lin, Hai, 2011. "A study on municipal solid waste (MSW) combustion in N2/O2 and CO2/O2 atmosphere from the perspective of TGA," Energy, Elsevier, vol. 36(2), pages 819-824.
    5. Zhou, Kun & Lin, Qizhao & Hu, Hongwei & Hu, Huiqing & Song, Lanbo, 2017. "The ignition characteristics and combustion processes of the single coal slime particle under different hot-coflow conditions in N2/O2 atmosphere," Energy, Elsevier, vol. 136(C), pages 173-184.
    6. Prabu, V. & Jayanti, S., 2012. "Laboratory scale studies on simulated underground coal gasification of high ash coals for carbon-neutral power generation," Energy, Elsevier, vol. 46(1), pages 351-358.
    7. Liu, Chunlong & Li, Zhengqi & Kong, Weiguang & Zhao, Yang & Chen, Zhichao, 2010. "Bituminous coal combustion in a full-scale start-up ignition burner: Influence of the excess air ratio," Energy, Elsevier, vol. 35(10), pages 4102-4106.
    8. Kotowicz, Janusz & Michalski, Sebastian, 2015. "Influence of four-end HTM (high temperature membrane) parameters on the thermodynamic and economic characteristics of a supercritical power plant," Energy, Elsevier, vol. 81(C), pages 662-673.
    9. Tang, Yuting & Ma, Xiaoqian & Lai, Zhiyi & Zhou, Daoxi & Lin, Hai & Chen, Yong, 2012. "NOx and SO2 emissions from municipal solid waste (MSW) combustion in CO2/O2 atmosphere," Energy, Elsevier, vol. 40(1), pages 300-306.
    10. Riaza, J. & Álvarez, L. & Gil, M.V. & Pevida, C. & Pis, J.J. & Rubiera, F., 2011. "Effect of oxy-fuel combustion with steam addition on coal ignition and burnout in an entrained flow reactor," Energy, Elsevier, vol. 36(8), pages 5314-5319.
    11. Fu, Chao & Gundersen, Truls, 2012. "Using exergy analysis to reduce power consumption in air separation units for oxy-combustion processes," Energy, Elsevier, vol. 44(1), pages 60-68.
    12. Kotowicz, Janusz & Michalski, Sebastian, 2014. "Efficiency analysis of a hard-coal-fired supercritical power plant with a four-end high-temperature membrane for air separation," Energy, Elsevier, vol. 64(C), pages 109-119.
    13. Riaza, J. & Gil, M.V. & Álvarez, L. & Pevida, C. & Pis, J.J. & Rubiera, F., 2012. "Oxy-fuel combustion of coal and biomass blends," Energy, Elsevier, vol. 41(1), pages 429-435.
    14. Irfan, Muhammad Faisal & Arami-Niya, Arash & Chakrabarti, Mohammed Harun & Wan Daud, Wan Mohd. Ashri & Usman, Muhammad Rashid, 2012. "Kinetics of gasification of coal, biomass and their blends in air (N2/O2) and different oxy-fuel (O2/CO2) atmospheres," Energy, Elsevier, vol. 37(1), pages 665-672.
    15. Skabelund, Brent B. & Stechel, Ellen B. & Milcarek, Ryan J., 2023. "Thermodynamic analysis of a gas turbine utilizing ternary CH4/H2/NH3 fuel blends," Energy, Elsevier, vol. 282(C).
    16. Burdyny, Thomas & Struchtrup, Henning, 2010. "Hybrid membrane/cryogenic separation of oxygen from air for use in the oxy-fuel process," Energy, Elsevier, vol. 35(5), pages 1884-1897.

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