Woody biomass and RPF gasification using reforming catalyst and calcium oxide

Jun Kobayashi, Katsuya Kawamoto, Ryutaro Fukushima, Shingo Tanaka

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This study focused on steam gasification and reforming of waste biomass using a reforming catalyst. The purpose of the study was to evaluate the durability of a commercial Ni reforming catalyst and the effect of CaO on the reforming behavior, and to clarify detailed factors of catalytic performance, as well as the effect of operating parameters on the characteristics of produced gas composition. Moreover, catalyst regeneration was carried out and the behavior of catalytic activity based on gas composition was investigated. Using a fluidized bed gasifier and a fixed bed reformer, gasification and reforming of waste biomass were carried out. Commercial Ni-based catalyst and calcined limestone (CaO) were applied to the reforming reaction. Temperature of the gasifier and reformer was almost 1023K. Ratio of steam to carbon in the feedstock [molmol-1] and equivalence ratio (i.e., ratio of actual to theoretical amount of oxygen) [-] were set at about 2 and 0.3, respectively. The feed rate of the feedstock into the bench-scale gasifier was almost 15kgh-1. The results of waste biomass gasification confirmed the improvement in H2 composition by the CO2 absorption reaction using the reforming catalyst and CaO. In addition, CaO proved to be especially effective in decreasing the tar concentration in the case of woody biomass gasification. Catalytic activity was maintained by means of catalyst regeneration processing by hydrogen reduction after air oxidation when woody biomass was used as feedstock.

Original languageEnglish
Pages (from-to)1273-1278
Number of pages6
JournalChemosphere
Volume83
Issue number9
DOIs
Publication statusPublished - May 1 2011
Externally publishedYes

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Keywords

  • CaO
  • Gasification and reforming
  • Ni-based catalyst
  • Tar
  • Waste biomass

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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