IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v260y2022ics0360544222018412.html
   My bibliography  Save this article

Chemistry variation of slag and the layered characteristics of deposits in an industrialized entrained-flow gasifier system with radiant syngas cooler

Author

Listed:
  • Xuan, Weiwei
  • Zhang, Yongquan
  • Zhang, Jiansheng

Abstract

Slag particles experience a series continuous transformation during the industrial gasification system and slag behavior is critical for stable operation. A proper slag layer needs to be formed in the gasifier to protect the reactor wall and the fluidity of liquid should be maintained for smooth tapping. When slag particles enter the syngas cooler, deposition is one of the obstacles restricting stable operation. This study took slag samples from a stable operational gasifier, syngas cooler and slag pool respectively, which can reveal slag chemistry transformation from the input ash to the output slag. The deposits taken from gasifier and syngas cooler are in layers. The chemical comparison result shows that the deposition in syngas cooler is more sensitive to slag composition than that in gasifier and the elements Fe, Na and K are abundant in the first deposition layer. The in-situ observation by a confocal scanning laser microscope shows that crystallization of this slag can last as low as 1000 °C. Thus, the solid-liquid mixture leads to sticky particles due to low liquid viscosity, increasing the deposition tendency.

Suggested Citation

  • Xuan, Weiwei & Zhang, Yongquan & Zhang, Jiansheng, 2022. "Chemistry variation of slag and the layered characteristics of deposits in an industrialized entrained-flow gasifier system with radiant syngas cooler," Energy, Elsevier, vol. 260(C).
    • Handle: RePEc:eee:energy:v:260:y:2022:i:c:s0360544222018412
    DOI: 10.1016/j.energy.2022.124942
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544222018412
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2022.124942?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Li, Guangyu & Xu, Shisen & Zhao, Xuebin & Sun, Ruijin & Wang, Chang’an & Liu, Kang & Mao, Qisen & Che, Defu, 2020. "Investigation of chemical composition and morphology of ash deposition in syngas cooler of an industrialized two-stage entrained-flow coal gasifier," Energy, Elsevier, vol. 194(C).
    2. Yao, Q. & Li, S.-Q. & Xu, H.-W. & Zhuo, J.-K. & Song, Q., 2010. "Reprint of: Studies on formation and control of combustion particulate matter in China: A review," Energy, Elsevier, vol. 35(11), pages 4480-4493.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Li, Fenghai & Zhao, Chaoyue & Guo, Qianqian & Li, Yang & Fan, Hongli & Guo, Mingxi & Wu, Lishun & Huang, Jiejie & Fang, Yitian, 2020. "Exploration in ash-deposition (AD) behavior modification of low-rank coal by manure addition," Energy, Elsevier, vol. 208(C).
    2. Liu, Yang & Fu, Peifang & Yu, Bo & Yan, Weijie & Chen, Yumin & Zhou, Huaichun, 2023. "Intrinsic combustion kinetics of rapid-pyrolysis Zhundong coal char," Energy, Elsevier, vol. 262(PB).
    3. Crespo, Bárbara & Patiño, David & Regueiro, Araceli & Granada, Enrique, 2016. "Performance of a lab-scale tubular-type electrostatic precipitator using a diesel engine particle emission source," Energy, Elsevier, vol. 116(P3), pages 1444-1453.
    4. Heming Dong & Yu Zhang & Qian Du & Jianmin Gao & Qi Shang & Dongdong Feng & Yudong Huang, 2022. "Generation and Emission Characteristics of Fine Particles Generated by Power Plant Circulating Fluidized Bed Boiler," Energies, MDPI, vol. 15(19), pages 1-13, September.
    5. Li, Fenghai & Yang, Ziqiang & Li, Yang & Han, Guopeng & Fan, Hongli & Liu, Xuefei & Xu, Meiling & Guo, Mingxi & Fang, Yitian, 2023. "The effects of Na2O/K2O flux on ash fusion characteristics for high silicon-aluminum coal in entrained-flow bed gasification," Energy, Elsevier, vol. 282(C).
    6. Mohsin Raza & Longfei Chen & Felix Leach & Shiting Ding, 2018. "A Review of Particulate Number (PN) Emissions from Gasoline Direct Injection (GDI) Engines and Their Control Techniques," Energies, MDPI, vol. 11(6), pages 1-26, June.
    7. Li, Zhengkuan & Tian, Songfeng & Zhang, Du & Chang, Chengzhi & Zhang, Qian & Zhang, Peijie, 2022. "Optimization study on improving energy efficiency of power cycle system of staged coal gasification coupled with supercritical carbon dioxide," Energy, Elsevier, vol. 239(PC).
    8. Ren, Liang & Gong, Yan & Wang, Xingjun & Guo, Qinghua & Yu, Guangsuo, 2023. "Study on recovery of residual carbon from coal gasification fine slag and the influence of oxidation on its characteristics," Energy, Elsevier, vol. 279(C).
    9. Beatrice Castellani & Elena Morini & Mirko Filipponi & Andrea Nicolini & Massimo Palombo & Franco Cotana & Federico Rossi, 2014. "Comparative Analysis of Monitoring Devices for Particulate Content in Exhaust Gases," Sustainability, MDPI, vol. 6(7), pages 1-21, July.
    10. Hariana, & Putra, Hanafi Prida & Prabowo, & Hilmawan, Edi & Darmawan, Arif & Mochida, Keiichi & Aziz, Muhammad, 2023. "Theoretical and experimental investigation of ash-related problems during coal co-firing with different types of biomass in a pulverized coal-fired boiler," Energy, Elsevier, vol. 269(C).
    11. Shizhang Wang & Junjie Wang & Yu Zhang & Linhan Dong & Heming Dong & Qian Du & Jianmin Gao, 2023. "Effect of External Mineral Addition on PM Generated from Zhundong Coal Combustion," Energies, MDPI, vol. 16(2), pages 1-24, January.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:260:y:2022:i:c:s0360544222018412. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.