| Numerical simulation of the pyrolysis zone in a downdraft gasification process. | |
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MedLine Citation:
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PMID: 19631526 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Models of the gasification process are mostly based on lumped analysis with distinct zones of the process treated as one entity. The study presented here was conducted to develop a more useful model specifically for the pyrolysis zone of the reactor of a downdraft gasifier based on finite computation method. Applying principles of energy and mass conservation, governing equations formed were solved by implicit finite difference method on the node of 100 throughout the length of the considered pyrolysis range (20 cm). Heat transfer considered convection, conduction, and the influence of solid radiation components. Chemical kinetics concept was also adopted to simultaneously solve the temperature profile and feedstock consumption rate on the pyrolysis zone. The convergence criteria were set at 10(-6) and simulation used Fortran Power Station 4.0. Validation experiments were also conducted resulting in maximum deviation of 24 degrees C and 0.37 kg/h for temperature and feedstock feed rate, respectively. |
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Authors:
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K Jaojaruek; S Kumar |
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Publication Detail:
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Type: Journal Article Date: 2009-07-23 |
Journal Detail:
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Title: Bioresource technology Volume: 100 ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-08-18 Completed Date: 2009-12-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
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Languages: eng Pagination: 6052-8 Citation Subset: IM |
Affiliation:
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Energy Field of Study, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Klongluang, Pathumthani 12120, Thailand. kitipong.j@ku.ac.th |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Biomass* Biotechnology / methods Gases Hot Temperature Hydrocarbons / chemistry Industrial Waste Kinetics Models, Theoretical Oxygen / chemistry Temperature Thermodynamics Wood |
| Chemical | |
Reg. No./Substance:
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0/Gases; 0/Hydrocarbons; 0/Industrial Waste; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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