Pretreated olivine as tar removal catalyst for biomass gasifiers: investigation using naphthalene as model biomass tar

Pretreated olivine as tar removal catalyst for biomass gasifiers: investigation using naphthalene... Biomass is considered as a potential source of renewable energy. One of the major problems for biomass gasification is the presence of tar in the product gas. We are investigating catalytic behaviour of olivine as a prospective bed additive for biomass gasifiers for tar removal. In the present paper, the pretreatment of olivine is investigated to improve its activity. Pretreatment method includes heating olivine at 900 °C in the presence of air for different treatment times. The catalytic activity of olivine is investigated via steam-reforming reaction of naphthalene as model biomass tar compound. Improvement in naphthalene conversion of around 30% is observed with 1 h of pretreatment. Also effect of pretreatment time is investigated. With increasing pretreatment time, conversion increases; more than 80% naphthalene conversion is observed with 10 h of pretreatment time for olivine. Both steam and dry reforming reaction of naphthalene forms more than 50% gaseous products over 10 h pretreated olivine. Besides the gaseous products and light tars, polymerization reactions occur producing higher tars in small quantity. Naphthalene conversion under syngas mixture is somewhat lower than that of only in steam and CO 2 . Apparent activation energy of 187 kJ mol −1 is determined for 10 h pretreated olivine under gasification-gas mixture. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Fuel Processing Technology Elsevier

Pretreated olivine as tar removal catalyst for biomass gasifiers: investigation using naphthalene as model biomass tar

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Publisher
Elsevier
Copyright
Copyright © 2004 Elsevier B.V.
ISSN
0378-3820
D.O.I.
10.1016/j.fuproc.2004.07.001
Publisher site
See Article on Publisher Site

Abstract

Biomass is considered as a potential source of renewable energy. One of the major problems for biomass gasification is the presence of tar in the product gas. We are investigating catalytic behaviour of olivine as a prospective bed additive for biomass gasifiers for tar removal. In the present paper, the pretreatment of olivine is investigated to improve its activity. Pretreatment method includes heating olivine at 900 °C in the presence of air for different treatment times. The catalytic activity of olivine is investigated via steam-reforming reaction of naphthalene as model biomass tar compound. Improvement in naphthalene conversion of around 30% is observed with 1 h of pretreatment. Also effect of pretreatment time is investigated. With increasing pretreatment time, conversion increases; more than 80% naphthalene conversion is observed with 10 h of pretreatment time for olivine. Both steam and dry reforming reaction of naphthalene forms more than 50% gaseous products over 10 h pretreated olivine. Besides the gaseous products and light tars, polymerization reactions occur producing higher tars in small quantity. Naphthalene conversion under syngas mixture is somewhat lower than that of only in steam and CO 2 . Apparent activation energy of 187 kJ mol −1 is determined for 10 h pretreated olivine under gasification-gas mixture.

Journal

Fuel Processing TechnologyElsevier

Published: Mar 25, 2005

References

  • Fuel Processing Technology
    Sutton, D.; Kelleher, B.; Ross, J.R.H.
  • Energy and Fuels
    Kabe, T.; Godo, M.; Otsuki, S.; Ishihara, A.; Qian, W.

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