IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v323y2025ics0360544225015397.html
   My bibliography  Save this article

A novel coal purification-combustion system: Purification and combustion characteristics

Author

Listed:
  • Han, Shaobo
  • Ren, Qiangqiang
  • Yang, Shaobo
  • Cui, Ruifang
  • Hu, Yujie
  • Zhang, Chi

Abstract

The purification-combustion concept of activating coal and separating impurities at high temperatures to achieve directional element conversion and impurity removal in fuel was proposed to better adapt to energy structure development and reduce pollution emissions during coal power generation. The purification and combustion of Shenmu coal in a 200 kW purification-combustion test platform were characterized, and the effect of the equivalence ratio of the high-temperature reduction unit (λ2) was analyzed. The platform maintained steady temperature distribution during operation. The C, H, N conversion rates improved significantly after purification compared to traditional methods. Improving λ2 increased the C conversion rate, but little affected H and N conversion. The concentrations of CO, H2 and CO2 rose after purification, while the CH4 concentration remained extremely low. NOx emission decreased with the decline of λ2 and reached 65 mg/m3, and 3.21 % of the fuel-N was transferred to NOx at λ2 = 0.33. The proportions of N2O and NO2 were larger at the top of the burner. After that, the reductive atmosphere was weakened and NO emerged. Hence, the new purification-combustion system is suitable for the current development of the coal industry.

Suggested Citation

  • Han, Shaobo & Ren, Qiangqiang & Yang, Shaobo & Cui, Ruifang & Hu, Yujie & Zhang, Chi, 2025. "A novel coal purification-combustion system: Purification and combustion characteristics," Energy, Elsevier, vol. 323(C).
    • Handle: RePEc:eee:energy:v:323:y:2025:i:c:s0360544225015397
    DOI: 10.1016/j.energy.2025.135897
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225015397
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.135897?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.

    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:323:y:2025:i:c:s0360544225015397. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.