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Investigation of reforming catalyst deactivation by exposure to fly ash from biomass gasification in laboratory scale

Einvall, Jessica; Albertazzi, Simone; Hulteberg, Christian LU ; Malik, Azhar; Basile, Francesco; Larsson, Ann-Charlotte; Brandin, Jan and Sanati, Mehri LU (2007) In Energy & Fuels 21(5). p.2481-2488
Abstract
Production of synthesis gas by catalytic reforming of product gas from biomass gasification can lead to catalyst deactivation by the exposure to ash compounds present in the flue gas. The impact of fly ash from biomass gasification on reforming catalysts was studied at the laboratory scale. The investigated catalyst was Pt/Rh based, and it was exposed to generated K2SO4 aerosol particles and to aerosol particles produced from the water-soluble part of biomass fly ash, originating from a commercial biomass combustion plant. The noble metal catalyst was also compared with a commercial Ni-based catalyst, exposed to aerosol particles of the same fashion. To investigate the deactivation by aerosol particles, a flow containing submicrometer-size... (More)
Production of synthesis gas by catalytic reforming of product gas from biomass gasification can lead to catalyst deactivation by the exposure to ash compounds present in the flue gas. The impact of fly ash from biomass gasification on reforming catalysts was studied at the laboratory scale. The investigated catalyst was Pt/Rh based, and it was exposed to generated K2SO4 aerosol particles and to aerosol particles produced from the water-soluble part of biomass fly ash, originating from a commercial biomass combustion plant. The noble metal catalyst was also compared with a commercial Ni-based catalyst, exposed to aerosol particles of the same fashion. To investigate the deactivation by aerosol particles, a flow containing submicrometer-size selected aerosol particles was led through the catalyst bed. The particle size of the poison was measured prior to the catalytic reactor system. Fresh and aerosol particle exposed catalysts were characterized using BET surface area, XRPD (X-ray powder diffraction), and H-2 Chemisorption. The Pt/Rh catalyst was also investigated for activity in the steam methane reforming reaction. It was found that the method to deposit generated aerosol particles on reforming catalysts could be a useful procedure to investigate the impact of different compounds possibly present in the product gas from the gasifier, acting as potential catalyst poisons. The catalytic deactivation procedure by exposure to aerosol particles is somehow similar to what happens in a real plant, when a catalyst bed is located subsequent to a biomass gasifier or a combustion boiler. Using different environments (oxidizing, reducing, steam present, etc.) in the aerosol generation adds further flexibility to the suggested aerosol deactivation method. It is essential to investigate the deactivating effect at the laboratory scale before a full-scale plant is taken into operation to avoid operational problems. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Energy & Fuels
volume
21
issue
5
pages
2481 - 2488
publisher
The American Chemical Society
external identifiers
  • wos:000249608300002
  • scopus:35348953731
ISSN
0887-0624
DOI
10.1021/ef060633k
language
English
LU publication?
yes
id
b4806e27-9706-468b-aa28-0ceccde7833b (old id 656159)
alternative location
http://pubs.acs.org/doi/pdf/10.1021/ef060633k
date added to LUP
2007-12-06 12:05:04
date last changed
2017-01-01 06:41:46
@article{b4806e27-9706-468b-aa28-0ceccde7833b,
  abstract     = {Production of synthesis gas by catalytic reforming of product gas from biomass gasification can lead to catalyst deactivation by the exposure to ash compounds present in the flue gas. The impact of fly ash from biomass gasification on reforming catalysts was studied at the laboratory scale. The investigated catalyst was Pt/Rh based, and it was exposed to generated K2SO4 aerosol particles and to aerosol particles produced from the water-soluble part of biomass fly ash, originating from a commercial biomass combustion plant. The noble metal catalyst was also compared with a commercial Ni-based catalyst, exposed to aerosol particles of the same fashion. To investigate the deactivation by aerosol particles, a flow containing submicrometer-size selected aerosol particles was led through the catalyst bed. The particle size of the poison was measured prior to the catalytic reactor system. Fresh and aerosol particle exposed catalysts were characterized using BET surface area, XRPD (X-ray powder diffraction), and H-2 Chemisorption. The Pt/Rh catalyst was also investigated for activity in the steam methane reforming reaction. It was found that the method to deposit generated aerosol particles on reforming catalysts could be a useful procedure to investigate the impact of different compounds possibly present in the product gas from the gasifier, acting as potential catalyst poisons. The catalytic deactivation procedure by exposure to aerosol particles is somehow similar to what happens in a real plant, when a catalyst bed is located subsequent to a biomass gasifier or a combustion boiler. Using different environments (oxidizing, reducing, steam present, etc.) in the aerosol generation adds further flexibility to the suggested aerosol deactivation method. It is essential to investigate the deactivating effect at the laboratory scale before a full-scale plant is taken into operation to avoid operational problems.},
  author       = {Einvall, Jessica and Albertazzi, Simone and Hulteberg, Christian and Malik, Azhar and Basile, Francesco and Larsson, Ann-Charlotte and Brandin, Jan and Sanati, Mehri},
  issn         = {0887-0624},
  language     = {eng},
  number       = {5},
  pages        = {2481--2488},
  publisher    = {The American Chemical Society},
  series       = {Energy & Fuels},
  title        = {Investigation of reforming catalyst deactivation by exposure to fly ash from biomass gasification in laboratory scale},
  url          = {http://dx.doi.org/10.1021/ef060633k},
  volume       = {21},
  year         = {2007},
}