Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis Gases

The updraft gasifier is a simple type of reactor for the gasification of biomass that is easy to operate and has high conversion efficiency, although it produces high levels of tar. This study attempts to observe the performance of a modified updraft gasifier. A modified updraft gasifier that recirc...

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Main Authors: Adi Surjosatyo, Fajri Vidian, Yulianto Sulistyo Nugroho
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Journal of Combustion
Online Access:http://dx.doi.org/10.1155/2014/832989
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author Adi Surjosatyo
Fajri Vidian
Yulianto Sulistyo Nugroho
author_facet Adi Surjosatyo
Fajri Vidian
Yulianto Sulistyo Nugroho
author_sort Adi Surjosatyo
collection DOAJ
description The updraft gasifier is a simple type of reactor for the gasification of biomass that is easy to operate and has high conversion efficiency, although it produces high levels of tar. This study attempts to observe the performance of a modified updraft gasifier. A modified updraft gasifier that recirculates the pyrolysis gases from drying zone back to the combustion zone and gas outlet at reduction zone was used. In this study, the level of pyrolysis gases that returned to the combustion zone was varied, and as well as measurements of gas composition, lower heating value and tar content. The results showed that an increase in the amount of pyrolysis gases that returned to the combustion zone resulted in a decrease in the amount of tar produced. An increase in the amount of recirculated gases tended to increase the concentrations of H2 and CH4 and reduce the concentration of CO with the primary (gasification) air flow held constant. Increasing the primary air flow tended to increase the amount of CO and decrease the amount of H2. The maximum of lower heating value was 4.9 MJ/m3.
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institution Kabale University
issn 2090-1968
2090-1976
language English
publishDate 2014-01-01
publisher Wiley
record_format Article
series Journal of Combustion
spelling doaj-art-25e843f9991c4f198973bdfe11dc2c622025-02-03T01:31:17ZengWileyJournal of Combustion2090-19682090-19762014-01-01201410.1155/2014/832989832989Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis GasesAdi Surjosatyo0Fajri Vidian1Yulianto Sulistyo Nugroho2Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, UI Campus, Depok 16242, IndonesiaDepartment of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, UI Campus, Depok 16242, IndonesiaDepartment of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, UI Campus, Depok 16242, IndonesiaThe updraft gasifier is a simple type of reactor for the gasification of biomass that is easy to operate and has high conversion efficiency, although it produces high levels of tar. This study attempts to observe the performance of a modified updraft gasifier. A modified updraft gasifier that recirculates the pyrolysis gases from drying zone back to the combustion zone and gas outlet at reduction zone was used. In this study, the level of pyrolysis gases that returned to the combustion zone was varied, and as well as measurements of gas composition, lower heating value and tar content. The results showed that an increase in the amount of pyrolysis gases that returned to the combustion zone resulted in a decrease in the amount of tar produced. An increase in the amount of recirculated gases tended to increase the concentrations of H2 and CH4 and reduce the concentration of CO with the primary (gasification) air flow held constant. Increasing the primary air flow tended to increase the amount of CO and decrease the amount of H2. The maximum of lower heating value was 4.9 MJ/m3.http://dx.doi.org/10.1155/2014/832989
spellingShingle Adi Surjosatyo
Fajri Vidian
Yulianto Sulistyo Nugroho
Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis Gases
Journal of Combustion
title Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis Gases
title_full Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis Gases
title_fullStr Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis Gases
title_full_unstemmed Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis Gases
title_short Experimental Gasification of Biomass in an Updraft Gasifier with External Recirculation of Pyrolysis Gases
title_sort experimental gasification of biomass in an updraft gasifier with external recirculation of pyrolysis gases
url http://dx.doi.org/10.1155/2014/832989
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AT yuliantosulistyonugroho experimentalgasificationofbiomassinanupdraftgasifierwithexternalrecirculationofpyrolysisgases