Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification

© 2019 Elsevier Ltd The objective of this study is to investigate the effect of torrefaction pretreatment on the syngas production and tar formation from chemical looping gasification (CLG) of biomass over different oxygen carriers. The torrefaction of eucalyptus wood and subsequent CLG were systema...

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Main Authors: Yuyang Fan, Nakorn Tippayawong, Guoqiang Wei, Zhen Huang, Kun Zhao, Liqun Jiang, Anqing Zheng, Zengli Zhao, Haibin Li
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/68367
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-683672020-04-02T15:26:28Z Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification Yuyang Fan Nakorn Tippayawong Guoqiang Wei Zhen Huang Kun Zhao Liqun Jiang Anqing Zheng Zengli Zhao Haibin Li Energy Engineering Environmental Science © 2019 Elsevier Ltd The objective of this study is to investigate the effect of torrefaction pretreatment on the syngas production and tar formation from chemical looping gasification (CLG) of biomass over different oxygen carriers. The torrefaction of eucalyptus wood and subsequent CLG were systematically studied by using the fixed bed reactors coupling with various analytical methods. The experimental results demonstrate that torrefaction played significant impacts on CLG of eucalyptus wood using iron ore as an oxygen carrier. The gas yield and carbon conversion efficiency from CLG of eucalyptus wood were lowered by torrefaction, while the tar content was evidently reduced from 43.6 to 17.6 g/Nm3. These results could be due to the devolatilization, polycondensation, and carbonization of eucalyptus wood during torrefaction, resulting in the formation of fewer tar precursors and more char with lower reactivity during subsequent CLG. The negative impacts of torrefaction on the gas yield and carbon conversion efficiency of CLG can be effectively overcome by the selection of suitable oxygen carriers. Five metallic ferrites were successfully synthesized and used to replace iron ore for CLG of torrefied eucalyptus wood obtained at 280 °C. It is found that NiFe2O4 reduced the tar content by 88.8% and improved the gas yield by 27.5% compared to CLG of untreated eucalyptus wood over iron ore. These results suggest that integrating biomass torrefaction pretreatment with CLG is an efficient strategy for enhancing syngas production whilst minimizing tar formation. 2020-04-02T15:25:40Z 2020-04-02T15:25:40Z 2020-02-15 Journal 03062619 2-s2.0-85075978187 10.1016/j.apenergy.2019.114315 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85075978187&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/68367
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Energy
Engineering
Environmental Science
spellingShingle Energy
Engineering
Environmental Science
Yuyang Fan
Nakorn Tippayawong
Guoqiang Wei
Zhen Huang
Kun Zhao
Liqun Jiang
Anqing Zheng
Zengli Zhao
Haibin Li
Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification
description © 2019 Elsevier Ltd The objective of this study is to investigate the effect of torrefaction pretreatment on the syngas production and tar formation from chemical looping gasification (CLG) of biomass over different oxygen carriers. The torrefaction of eucalyptus wood and subsequent CLG were systematically studied by using the fixed bed reactors coupling with various analytical methods. The experimental results demonstrate that torrefaction played significant impacts on CLG of eucalyptus wood using iron ore as an oxygen carrier. The gas yield and carbon conversion efficiency from CLG of eucalyptus wood were lowered by torrefaction, while the tar content was evidently reduced from 43.6 to 17.6 g/Nm3. These results could be due to the devolatilization, polycondensation, and carbonization of eucalyptus wood during torrefaction, resulting in the formation of fewer tar precursors and more char with lower reactivity during subsequent CLG. The negative impacts of torrefaction on the gas yield and carbon conversion efficiency of CLG can be effectively overcome by the selection of suitable oxygen carriers. Five metallic ferrites were successfully synthesized and used to replace iron ore for CLG of torrefied eucalyptus wood obtained at 280 °C. It is found that NiFe2O4 reduced the tar content by 88.8% and improved the gas yield by 27.5% compared to CLG of untreated eucalyptus wood over iron ore. These results suggest that integrating biomass torrefaction pretreatment with CLG is an efficient strategy for enhancing syngas production whilst minimizing tar formation.
format Journal
author Yuyang Fan
Nakorn Tippayawong
Guoqiang Wei
Zhen Huang
Kun Zhao
Liqun Jiang
Anqing Zheng
Zengli Zhao
Haibin Li
author_facet Yuyang Fan
Nakorn Tippayawong
Guoqiang Wei
Zhen Huang
Kun Zhao
Liqun Jiang
Anqing Zheng
Zengli Zhao
Haibin Li
author_sort Yuyang Fan
title Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification
title_short Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification
title_full Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification
title_fullStr Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification
title_full_unstemmed Minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification
title_sort minimizing tar formation whilst enhancing syngas production by integrating biomass torrefaction pretreatment with chemical looping gasification
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85075978187&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/68367
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