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Co-Combustion Characteristics of Municipal Sewage Sludge and Coal in a Lab-Scale Fluidized Bed Furnace

Author

Listed:
  • Zuopeng Qu

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 100096, China)

  • Xiaotian Wei

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 100096, China)

  • Wendi Chen

    (State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China)

  • Fei Wang

    (State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China)

  • Yongtian Wang

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 100096, China)

  • Jisheng Long

    (Shanghai SUS Environment Co., Ltd., Shanghai 200234, China)

Abstract

The co-combustion of dry coal and sludge was carried out in a self-built laboratory scale fluidized bed furnace. We used FTIR spectroscopy, high-resolution gas chromatography, high-resolution mass spectrometry, and XRF to capture and dynamically observe the flue gas fly ash and bottom ash. The sludge sample was taken from a municipal sewage treatment plant and its mixing ratio was below 20%. The temperature distribution of the furnace was observed and the emissions of the main gaseous pollutants such as SO 2 , NOx, and dioxins were measured in the combustion process. The heavy metal contents of fly ash and bottom ash were later detected to analyze the migration characteristics. The results showed that all of the gaseous pollutants measured increased linearly with the sludge mixing ratio. However, it could also meet the 1 metal content of bottom ash and fly ash did not change much. Through the elaboration of the above points, this study can provide guidance for future research on the co-combustion of coal boiler sludge and suggest favorable conditions for the co-combustion of coal boiler sludge.

Suggested Citation

  • Zuopeng Qu & Xiaotian Wei & Wendi Chen & Fei Wang & Yongtian Wang & Jisheng Long, 2023. "Co-Combustion Characteristics of Municipal Sewage Sludge and Coal in a Lab-Scale Fluidized Bed Furnace," Energies, MDPI, vol. 16(5), pages 1-11, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:5:p:2374-:d:1084979
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