Co-combustion of coal with rice husk and bamboo in power generation

Christopher Y.H. Chao, J. H. Wang, Philip C.W. Kwong

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


In many Asian countries Coal is frequently used a major fuel in power plants. Burning coal creates quite a lot of environmental problems when compared to other cleaner fuels such as natural gas. Experimental study of co-combustion of coal and biomass was conducted in a laboratory scale combustion facility to evaluate the combustion and pollutant emission performance under different operation parameters. Rice husk and bamboo were used as the biomass fuels in this study. This paper reported the influence of the biomass blending ratio in the fuel mixture and the excess air ratio on the combustion behavior. It was noted that the combustion temperature and the energy output from the co-firing process were reduced compared to coal combustion alone owing to the fact that biomass has lower heating value compared to coal. However, the high volatile matter (VM) content of biomass improved the combustion time scale so that the carbon monoxide (CO) emissions were reduced substantially. In addition, the fuel nitrogen and sulfur content in biomass were lower than that of coal and hence suppressed the formation of nitrogen oxides (NOx) and sulfur dioxide (SO2) during the cocombustion process. The increase of excess air ratio also affected most of the pollutant emissions. The pollutant emission per unit energy output at different excess air ratios and biomass blending ratios were studied in detail in this paper. Attention should be paid to the high potential of slagging and fouling in the boiler when co-firing coal with biomass.

Original languageEnglish
Title of host publicationProceedings of the Energy Sustainability Conference 2007
Number of pages9
Publication statusPublished - 2007
Event2007 Energy Sustainability Conference - Long Beach, CA, United States
Duration: 27 Jun 200730 Jun 2007

Publication series

NameProceedings of the Energy Sustainability Conference 2007


Conference2007 Energy Sustainability Conference
Country/TerritoryUnited States
CityLong Beach, CA


  • Bamboo
  • Biomass
  • Co-combustion
  • Rice husk

ASJC Scopus subject areas

  • General Energy
  • Electrical and Electronic Engineering


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