IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v305y2024ics0360544224021327.html
   My bibliography  Save this article

A novel waste-to-energy system based on sludge hydrothermal treatment and medical waste plasma gasification and integrated with the waste heat recovery of a cement plant

Author

Listed:
  • Li, Sarengaowa
  • Chen, Heng
  • Gao, Yue
  • Fan, Lanxin
  • Pan, Peiyuan
  • Xu, Gang

Abstract

A hybrid design solution is proposed to improve the waste-to-energy process by hydrothermal treatment of sludge and plasma gasification of medical waste and combining it with waste heat recovery from a cement plant. In this integrated system, the cement kiln exhaust is fed into the SP and AQC, and the resulting steam is fed into a steam turbine and generates electricity. Thus, cement kiln exhaust gas can generate electricity through the steam cycle. At the same time, sewage sludge is hydrothermally treated to produce hydrochar in the cement kiln, which is used as part of the fuel. Medical waste is used as feedstock for the plasma gasification process. The syngas produce power from a gas turbine. The hybrid design was analyzed using energy, exergy, and economic analysis. The hybrid design achieves 84.03 % energy efficiency, up to 80.29 % exergy efficiency, and up to 26.61 % net electrical energy efficiency in the energy utilization. The proposed hybrid project has a dynamic payback period of 2.64 years and achieves a net present value of 477,165.22k$ over a 25-year lifetime. The article discusses the impact of sewage sludge water content and sewage sludge treatment allowance on the performance and economics of the hybrid system.

Suggested Citation

  • Li, Sarengaowa & Chen, Heng & Gao, Yue & Fan, Lanxin & Pan, Peiyuan & Xu, Gang, 2024. "A novel waste-to-energy system based on sludge hydrothermal treatment and medical waste plasma gasification and integrated with the waste heat recovery of a cement plant," Energy, Elsevier, vol. 305(C).
  • Handle: RePEc:eee:energy:v:305:y:2024:i:c:s0360544224021327
    DOI: 10.1016/j.energy.2024.132358
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544224021327
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.energy.2024.132358?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:305:y:2024:i:c:s0360544224021327. 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.