By the same authors

From the same journal

Continuous flow characterization of solid biomass in a reciprocating/rotating scraper tube: An experimental study

Research output: Contribution to journalArticlepeer-review

Published copy (DOI)


  • Kamelia V K Boodhoo
  • Lily Smith
  • Juan Pedro Solano
  • Mark Gronnow
  • James Clark


Publication details

JournalAIChE Journal
DatePublished - 14 Aug 2014
Issue number11
Number of pages7
Pages (from-to)3732-3738
Original languageEnglish


The performance of reciprocating/rotating scrapers has been assessed in a visualization study of the continuous flow hydrodynamics of air-fluidized solid biomass under varying conditions of air flow rate and scraping velocities. A combination of low air flow rates and high scraping velocities results in more uniform flow of both types of biomass investigated. Power consumed by the reciprocating action of the scrapers increases with the scraping velocity but typically represents no more than 20% of the overall power consumption at the highest air flow rate applied. We also demonstrate that rotation of the scrapers superimposed on their reciprocating action gives higher flow rate of biomass and better mixing within the bulk solid compared to reciprocating action alone. The application of the reciprocating/rotating scraper technology described in this study represents a viable step forward in developing a continuous, large-scale process for the microwave-assisted decomposition of solid biomass to produce bio-oils.

    Research areas

  • Fluidization, Gas-solid multiphase flow, Horizontal tubular reactor, Reciprocating/rotating scrapers, Solid biomass

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