Title:
Catalytic Reduction of Tar/CH4 by an Internal Reformer in a DFB Gasifier
Author(s):
Göransson, K., Söderlind, U., Zhang, W.
Document(s):
Paper
Poster
Abstract:
An internal reformer is developed for in-situ catalytic reforming of tar and methane (CH4) in allothermal gasifiers. Reduction of tars and CH4 in the syngas is a challenge for commercialization of biomass fluidised-bed gasification technology towards advanced automotive fuel production. This paper presents an initial study on the internal reformer operated with and without Ni-catalytic pellets in the Mid Sweden University (MIUN) DFB (Dual Fluidised Bed) gasifier, by evaluation of the syngas composition and tar/CH4 content. The novelty with the application of Ni-catalyst in this paper is the selected location where intensive gas to catalytic-material and bed-material contacts improve the reforming reactions. It can be concluded that the reformer with Ni-catalytic pellets clearly gives a higher H2 content together with lower CH4 and tar contents in the syngas than the reformer without Ni-catalytic pellets. The gravimetric tar content decreases down to 5 g/m3 and the CH4 content down below 6% in the syngas. The tar content will be decreased further to lower levels, with increased gas contact to the specific surface area of the catalyst and increased catalyst surface-to-volume ratio. The new design in the MIUN gasifier increases the gasification efficiency, suppresses the tar generation and upgrades the syngas quality.
Keywords:
biomass gasification, syngas cleaning, tar reduction, dual fluidised bed, methane reforming, tar-cracking catalyst
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for synthesis gas production
Event:
22nd European Biomass Conference and Exhibition
Session:
2AV.2.13
Pages:
620 - 625
ISBN:
978-88-89407-52-3
Paper DOI:
10.5071/22ndEUBCE2014-2AV.2.13
Price:
FREE
