CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Manganese oxide as catalyst for tar cleaning of biomass-derived gas

Fredrik Lind (Institutionen för energi och miljö, Energiteknik, Chalmers förgasare) ; Mikael Israelsson (Institutionen för energi och miljö, Energiteknik) ; Martin Seemann (Institutionen för energi och miljö, Energiteknik, Chalmers förgasare) ; Henrik Thunman (Institutionen för energi och miljö, Energiteknik, Chalmers förgasare)
Biomass Conversion and Biorefinery (2190-6823). Vol. 2 (2012), 2, p. 133 - 140.
[Artikel, refereegranskad vetenskaplig]

The possibilities to upgrade raw gas with the use of a manganese oxide have been investigated in an application for secondary tar cleaning of biomass derived gas. Experiments were conducted in a reactor system where a novel technique that combines tar cleaning with catalyst regeneration is applied. Raw gas from the Chalmers non-catalytic steam biomass gasifier - containing roughly 32 gtar/Nm3gas - was fed to the tar cleaning reactor. The tar reforming qualities of the manganese oxide were evaluated in the reactor system using a mixture of 23 wt% catalysts in silica sand at the temperatures 700 and 800°C. Experiments showed that the catalyst was continuously regenerated from carbon deposits and that the total amount of tars was decreased by as much as 44,5% at a gas residence time of 0.4 s in the bed. The catalyst showed activity in water-gas shift reaction and the H2/CO-ratio increased from 0.6 in the raw gas to a peak value of 1 in the reformed gas at 800°C. Only a slight decrease in methane and acetylene content was observed for both operating temperatures.

Nyckelord: Biomass, Tar, Gas cleaning, Catalysts, Gasification, Dual fluidized bed

Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2012-05-03. Senast ändrad 2015-12-17.
CPL Pubid: 157264


Läs direkt!

Länk till annan sajt (kan kräva inloggning)

Institutioner (Chalmers)

Institutionen för energi och miljö, Energiteknik, Chalmers förgasare (2007-2017)
Institutionen för energi och miljö, Energiteknik (2005-2017)


Hållbar utveckling
Annan kemi
Kemisk apparatteknik

Chalmers infrastruktur

Relaterade publikationer

Denna publikation ingår i:

Design and Operation of a Chemical-Looping Reformer for Catalytic Upgrading of Biomass-Derived Gas

Tar and Condensable Hydrocarbons in Indirect Gasification Systems