Variations in the design of dual fluidized bed gasifiers and the quality of syngas from biomass

C. Srinivasakannan, N. Balasubramanian

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Fluidized bed reactors are the most popular mode of reactors for gasification to produce syngas at medium- to large-scale applications. Fluidized bed gasification is either carried out conventionally in a bubbling fluidized bed or in a circulating fluidized bed. However, the recent development on the use of indirectly heated gasifiers to produce high energy syngas has resulted in a number of possible combinations of fluidized beds, involving combinations of bubbling fluidized beds and circulating fluidized beds. The present work attempts to compile the different designs that are in various stages of development, addressing its operations and merits. In addition, an attempt has been made to compile and analyze the work reported in the literature, based on syngas quality in terms of carbon monooxide (CO) to hydrogen (H2) ratio, which is critical for downstream processing, along with the heating value of the syngas.

Original languageBritish English
Pages (from-to)349-359
Number of pages11
JournalEnergy Sources, Part A: Recovery, Utilization and Environmental Effects
Issue number4
StatePublished - Jan 2011


  • biomass
  • dual fluidized beds
  • gasification
  • indirectly heated gasifiers
  • syngas


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