title: Gas cleaning, gas conditioning and tar abatement by means of a catalytic filter candle in a biomass fluidized-bed gasifier.
abstract: A bench-scale fluidized-bed biomass gasification plant, operating at atmospheric pressure and temperature within the range 800-820 degrees C, has been used to test an innovative gas cleaning device: a catalytic filter candle fitted into the bed freeboard. This housing of the gas conditioning system within the gasifier itself results in a very compact unit and greatly reduced thermal losses. Long term (22h) tests were performed on the gasifier both with and without the catalytic candle filter, under otherwise identical conditions. Analysis of the product gas for the two cases showed the catalytic filtration to give rise to notable improvements in both gas quality and gas yield: an increase in hydrogen yield of 130% and an overall increase in gas yield of 69% - with corresponding decreases in methane and tar content of 20% and 79%, respectively. HPLC/UV analysis was used to characterize the tar compounds.
authors.affiliation: Dipartimento di Scienze degli Alimenti, University of Teramo, 64023 Mosciano S. Angelo, Teramo, Italy. srapagna@unite.it
authors.forename: Sergio
authors.initials: S
authors.lastname: Rapagnà
authors.forename: Katia
authors.initials: K
authors.lastname: Gallucci
authors.forename: Manuela
authors.initials: M
authors.lastname: Di Marcello
authors.forename: Muriel
authors.initials: M
authors.lastname: Matt
authors.forename: Manfred
authors.initials: M
authors.lastname: Nacken
authors.forename: Steffen
authors.initials: S
authors.lastname: Heidenreich
authors.forename: Pier Ugo
authors.initials: PU
authors.lastname: Foscolo
mesh_terms: D002384:Catalysis; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000737:chemistry* / Q000302:isolation & purification*; D009754:Nuts / Q000737:chemistry*; D027861:Prunus / Q000737:chemistry*; D012212:Rheology / Q000295:instrumentation*; D013638:Tars / Q000737:chemistry / Q000302:isolation & purification*; D014462:Ultrafiltration / Q000295:instrumentation*
chemical_list: D005740:Gases; D013638:Tars