Influence of operation conditions and additives on the development of producer gas and tar reduction in air gasification of construction woody wastes using a two-stage gasifier

Tae Young Mun, Jin O. Kim, Jin Won Kim, Joo Sik Kim

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Air gasification was conducted with fractions of construction woody wastes in a two-stage gasifier, consisting of a fluidized bed zone and a tar cracking zone. The aim of this work is to investigate the influence of reaction conditions and additives on the composition of producer gas and tar content in producer gas. A producer gas obtained with activated carbon of 540g at an ER of 0.26 was mainly composed of H2 (25vol.%), CO (22vol.%) and CH4 (5vol.%). Regarding tar removal efficiency, activated carbon was better than olivine. The tar removal rate with virgin activated carbon reached up to 80%. The reuse of spent activated carbon caused an efficiency loss in tar removal to some extent. Overall, it seems that the strong need for intensive downstream tar removal measurements can be removed with the use of a two-stage gasifier and the application of activated carbon.

Original languageEnglish
Pages (from-to)7196-7203
Number of pages8
JournalBioresource Technology
Volume102
Issue number14
DOIs
StatePublished - Jul 2011

Keywords

  • Activated carbon
  • Construction woody waste
  • Producer gas
  • Tar
  • Two-stage gasifier

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