SCI和EI收录∣中国化工学会会刊

›› 2012, Vol. 20 ›› Issue (3): 543-550.

• 香港科技大学化学与生物分子工程系戈登·麦凯教授退休纪念专刊 • 上一篇    下一篇

Experimental and Modelling Studies of Biomass Pyrolysis

Ka Leung Lam, Adetoyese Olajire Oyedun, Chi Wai Hui   

  1. Department of Chemical and Biomolecular Engineering, the Hong Kong University of Science and Technology, Hong Kong, China
  • 收稿日期:2012-02-06 修回日期:2012-05-10 出版日期:2012-06-28 发布日期:2012-08-17
  • 通讯作者: Chi Wai Hui, E-mail: kehui@ust.hk
  • 基金资助:
    Supported by Hong Kong RGC research grant(613808,614307);Hong Kong PhD Fellowship Scheme for Oyedun Adetoyese Olajire(PF09-05997);the Global Power and Energy Company Limited

Experimental and Modelling Studies of Biomass Pyrolysis

Ka Leung Lam, Adetoyese Olajire Oyedun, Chi Wai Hui   

  1. Department of Chemical and Biomolecular Engineering, the Hong Kong University of Science and Technology, Hong Kong, China
  • Received:2012-02-06 Revised:2012-05-10 Online:2012-06-28 Published:2012-08-17
  • Supported by:
    Supported by Hong Kong RGC research grant(613808,614307);Hong Kong PhD Fellowship Scheme for Oyedun Adetoyese Olajire(PF09-05997);the Global Power and Energy Company Limited

摘要: The analysis on the feedstock pyrolysis characteristic and the impacts of process parameters on pyrolysis outcomes can assist in the designing,operating and optimizing pyrolysis processes.This work aims to utilize both experimental and modelling approaches to perform the analysis on three biomass feedstocks—wood sawdust,bamboo shred and Jatropha Curcas seed cake residue,and to provide insights for the design and operation of pyrolysis processes.For the experimental part,the study investigated the effect of heating rate,final pyrolysis temperature and sample size on pyrolysis using common thermal analysis techniques.For the modelling part,a transient mathematical model that integrates the feedstock characteristic from the experimental study was used to simulate the pyrolysis progress of selected biomass feedstock particles for reactor scenarios.The model composes of several sub-models that describe pyrolysis kinetic and heat flow,particle heat transfer,particle shrinking and reactor operation.With better understanding of the effects of process conditions and feedstock characteristics on pyrolysis through both experimental and modelling studies,this work discusses on the considerations of and interrelation between feedstock size,pyrolysis energy usage,processing time and product quality for the design and operation of pyrolysis processes.

关键词: pyrolysis, wood, bamboo, Jatropha Curcas, modelling, operation strategy

Abstract: The analysis on the feedstock pyrolysis characteristic and the impacts of process parameters on pyrolysis outcomes can assist in the designing,operating and optimizing pyrolysis processes.This work aims to utilize both experimental and modelling approaches to perform the analysis on three biomass feedstocks—wood sawdust,bamboo shred and Jatropha Curcas seed cake residue,and to provide insights for the design and operation of pyrolysis processes.For the experimental part,the study investigated the effect of heating rate,final pyrolysis temperature and sample size on pyrolysis using common thermal analysis techniques.For the modelling part,a transient mathematical model that integrates the feedstock characteristic from the experimental study was used to simulate the pyrolysis progress of selected biomass feedstock particles for reactor scenarios.The model composes of several sub-models that describe pyrolysis kinetic and heat flow,particle heat transfer,particle shrinking and reactor operation.With better understanding of the effects of process conditions and feedstock characteristics on pyrolysis through both experimental and modelling studies,this work discusses on the considerations of and interrelation between feedstock size,pyrolysis energy usage,processing time and product quality for the design and operation of pyrolysis processes.

Key words: pyrolysis, wood, bamboo, Jatropha Curcas, modelling, operation strategy