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Dynamic modeling of Shell entrained flow gasifier in an integrated gasification combined cycle process

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  • Lee, Hyeon-Hui
  • Lee, Jae-Chul
  • Joo, Yong-Jin
  • Oh, Min
  • Lee, Chang-Ha

Abstract

The Shell coal gasification system is a single-stage, up-flow, oxygen-blown gasifier which utilizes dry pulverized coal with an entrained flow mechanism. Moreover, it has a membrane wall structure and operates in the slagging mode. This work provides a detailed dynamic model of the 300MW Shell gasifier developed for use as part of an overall IGCC (integrated gasification combined cycle) process simulation. The model consists of several sub-models, such as a volatilization zone, reaction zone, quench zone, slag zone, and membrane wall zone, including heat transfers between the wall layers and steam generation. The dynamic results were illustrated and the validation of the gasifier model was confirmed by comparing the results in the steady state with the reference data. The product gases (H2 and CO) began to come out from the exit of the reaction zone within 0.5s, and nucleate boiling heat transfer was dominant in the water zone of the membrane wall due to high heat fluxes. The steady state of the process was reached at nearly t=500s, and our simulation data for the steady state, such as the temperature and composition of the syngas, the cold gas efficiency (81.82%), and carbon conversion (near 1.0) were in good agreement with the reference data.

Suggested Citation

  • Lee, Hyeon-Hui & Lee, Jae-Chul & Joo, Yong-Jin & Oh, Min & Lee, Chang-Ha, 2014. "Dynamic modeling of Shell entrained flow gasifier in an integrated gasification combined cycle process," Applied Energy, Elsevier, vol. 131(C), pages 425-440.
    • Handle: RePEc:eee:appene:v:131:y:2014:i:c:p:425-440
    DOI: 10.1016/j.apenergy.2014.06.044
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    References listed on IDEAS

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    1. Lee, Jae Chul & Lee, Hyeon Hui & Joo, Yong Jin & Lee, Chang Ha & Oh, Min, 2014. "Process simulation and thermodynamic analysis of an IGCC (integrated gasification combined cycle) plant with an entrained coal gasifier," Energy, Elsevier, vol. 64(C), pages 58-68.
    2. Botero, Cristina & Field, Randall P. & Herzog, Howard J. & Ghoniem, Ahmed F., 2013. "Impact of finite-rate kinetics on carbon conversion in a high-pressure, single-stage entrained flow gasifier with coal–CO2 slurry feed," Applied Energy, Elsevier, vol. 104(C), pages 408-417.
    3. Jeong, Hyo Jae & Seo, Dong Kyun & Hwang, Jungho, 2014. "CFD modeling for coal size effect on coal gasification in a two-stage commercial entrained-bed gasifier with an improved char gasification model," Applied Energy, Elsevier, vol. 123(C), pages 29-36.
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    6. Moon, Dong-Kyu & Lee, Dong-Geun & Lee, Chang-Ha, 2016. "H2 pressure swing adsorption for high pressure syngas from an integrated gasification combined cycle with a carbon capture process," Applied Energy, Elsevier, vol. 183(C), pages 760-774.
    7. Lee, Woo-Sung & Lee, Jae-Cheol & Oh, Hyun-Taek & Baek, Seung-Won & Oh, Min & Lee, Chang-Ha, 2017. "Performance, economic and exergy analyses of carbon capture processes for a 300 MW class integrated gasification combined cycle power plant," Energy, Elsevier, vol. 134(C), pages 731-742.
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    12. Zhou, Hua & Xie, Taili & You, Fengqi, 2018. "On-line simulation and optimization of a commercial-scale shell entrained-flow gasifier using a novel dynamic reduced order model," Energy, Elsevier, vol. 149(C), pages 516-534.
    13. Fang, Neng & Li, Zhengqi & Liu, Shuxuan & Xie, Cheng & Zeng, Lingyan & Chen, Zhichao, 2021. "Experimental air/particle flow characteristics of an 80,000 Nm3/h fly ash entrained-flow gasifier with different multi-burner arrangements," Energy, Elsevier, vol. 215(PB).
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    18. Sang Shin Park & Hyo Jae Jeong & Jungho Hwang, 2015. "3-D CFD Modeling for Parametric Study in a 300-MWe One-Stage Oxygen-Blown Entrained-Bed Coal Gasifier," Energies, MDPI, vol. 8(5), pages 1-21, May.
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