AI SearchA study on biomass combustion in multiple-spouted and spout-fluid beds
Call Number: AIT Thesis no.ET-99-9 Material type:
SeriesSeries: Asian Institute of Technology. Thesis ; no. ET-99-9Publication details: Bangkok : Asian Institute of Technology, 1999Description: 90 leavesSubject(s): Online resources: Dissertation note: Thesis (M.Eng.) - Asian Institute of Technology, 1999 Summary: The objective of the study was to carry out research on combustion of rice husk in a pilot scale multiple-spouted bed as well as a spout-fluid bed. Hydrodynamics of the multiple spouted bed was also studied. The experimental beds were designed and fabricated as a part of the study. It was possible to burn rice husk efficiently in the multiple-spouted bed with both over-bed and under-bed feeding. However, the under-bed feeding was found to give slightly higher combustion efficiency and smoother operation compared with over-bed feeding. In both cases, the efficiency loss due to CO formation was found to be significantly higher than loss due to unburnt carbon in ash. Spout-fluid bed configuration was found to be particularly attractive. It attained a combustion efficiency in the range of 94.44 % to 96.24 %. Concentration of CO in the flue gas from spouted bed combustion was in the range of 0.3 % to 1.5 %, while methane concentration was ranged from 0 to 0.85 %. N20 was not detectable in any of the combustor configurations studied.
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Asian Institute of Technology Library AIT Publications | AIT Thesis no.ET-99-9 (Browse shelf(Opens below)) | 3 | Available | 30050120749584 | |||||||||||||
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Asian Institute of Technology Library Archives | AIT Thesis no.ET-99-9 (Browse shelf(Opens below)) | Available | 30050120365563 |
A thesis report submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment Resources, and Development
Thesis (M.Eng.) - Asian Institute of Technology, 1999
The objective of the study was to carry out research on combustion of rice husk in a pilot scale multiple-spouted bed as well as a spout-fluid bed. Hydrodynamics of the multiple spouted bed was also studied. The experimental beds were designed and fabricated as a part of the study. It was possible to burn rice husk efficiently in the multiple-spouted bed with both over-bed and under-bed feeding. However, the under-bed feeding was found to give slightly higher combustion efficiency and smoother operation compared with over-bed feeding. In both cases, the efficiency loss due to CO formation was found to be significantly higher than loss due to unburnt carbon in ash. Spout-fluid bed configuration was found to be particularly attractive. It attained a combustion efficiency in the range of 94.44 % to 96.24 %. Concentration of CO in the flue gas from spouted bed combustion was in the range of 0.3 % to 1.5 %, while methane concentration was ranged from 0 to 0.85 %. N20 was not detectable in any of the combustor configurations studied.
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