Title:
Real Tar Removal over a Fixed Bed of Biomass Char
Author(s):
Abu El-Rub, Z., Bramer, E.A., Brem, G.
Document(s):
Paper
Poster
Abstract:
Tar removal in biomass gasification systems is one of the key challenges to overcome for the successful commercialization of this technology. In this study, the output producer gas from a BFB biomass gasifier was treated in a fixed bed tar cracker that used biomass char as a catalyst. The effect of the char bed temperature on tar conversion, tar composition and the simultaneous biomass char conversion was investigated. The average tar composition of the producer gas contained mainly naphthalene (40%), acenaphthylene (20%) and the balance is several others tar components. Most of the components in the feed tar disappeared in the tar cracker and only some of the heaviest tars were left. It was not seen that the concentration of any component increased but all of them decreased. In the char gasification, neither the particle volume remained constant nor did it shrink. Therefore, it might be a combination of both. The results of the carbon mass balance conducted at one hour time on stream gave a closing error of ±20%, which was acceptable for this kind of measurements. The char was tested for five hours and the results showed >98.7% tar removal during five hours of experimental time.
Keywords:
biomass, gasification, tar, char
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for synthesis gas production
Event:
23rd European Biomass Conference and Exhibition
Session:
2DV.1.32
Pages:
819 - 823
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-2DV.1.32
Price:
FREE
