Lignocellulosic biomass pyrolysis

A review of product properties and effects of pyrolysis parameters

Tao Kan*, Vladimir Strezov, Tim J. Evans

*Corresponding author for this work

Research output: Contribution to journalReview article

543 Citations (Scopus)

Abstract

Pyrolysis is one of the thermochemical technologies for converting biomass into energy and chemical products consisting of liquid bio-oil, solid biochar, and pyrolytic gas. Depending on the heating rate and residence time, biomass pyrolysis can be divided into three main categories slow (conventional), fast and flash pyrolysis mainly aiming at maximising either the bio-oil or biochar yields. Synthesis gas or hydrogen-rich gas can also be the target of biomass pyrolysis. Maximised gas rates can be achieved through the catalytic pyrolysis process, which is now increasingly being developed. Biomass pyrolysis generally follows a three-step mechanism comprising of dehydration, primary and secondary reactions. Dehydrogenation, depolymerisation, and fragmentation are the main competitive reactions during the primary decomposition of biomass. A number of parameters affect the biomass pyrolysis process, yields and properties of products. These include the biomass type, biomass pretreatment (physical, chemical, and biological), reaction atmosphere, temperature, heating rate and vapour residence time. This manuscript gives a general summary of the properties of the pyrolytic products and their analysis methods. Also provided are a review of the parameters that affect biomass pyrolysis and a summary of the state of industrial pyrolysis technologies.

Original languageEnglish
Pages (from-to)1126-1140
Number of pages15
JournalRenewable and Sustainable Energy Reviews
Volume57
DOIs
Publication statusPublished - 1 May 2016

    Fingerprint

Keywords

  • Biomass pyrolysis
  • Mechanism
  • Bio-oil
  • Biochar
  • Pretreatment
  • Pyrolysis parameters

Cite this