Paper details

Title:

Titanium-Based Nano-Cu/Ni Catalyst for the Steam Reforming of Model Tars from Biomass Gasification

Author(s):

Wiedenmann, F., Hein, D., Krumm, W.

Document(s):

Abstract:

Tars with high boiling points are an unwanted by­product of biomass gasification for energy purposes. In most cases, these tars must be mitigated prior to any downstream application of the product gas in CHP­systems with combustion engines or gas turbines. Comprehensive examinations on catalytic tar reforming have shown that tar concentrations in biomass gasification product gas can be lowered significantly by means of catalytically active bed materials. Since naphthalene represents the main constituent of biomass tar, it is widely used as a model tar for ex­aminations on synthetic like nickel and mineral catalysts like dolomite, olivine, and bauxite. In this paper results of a novel Ti­based nano­Cu/Ni catalyst for the steam reforming of naphthalene (C10H8) are presented. It could be demon­strated that tar conversion efficiencies determined according to DIN CEN/TS 15439:2006 reached 90 % at 800 °C in the catalytic bed. When using the model tars phenanthrene (C14H10) and pyrene (C16H10), both already condensing at higher temperatures than naphthalene and thus representing severe threats to process stability, almost complete con­version was observed at 850 °C. The investigated catalyst showed high resistance against poisoning with H2S and constant performance in repeated reforming­oxidizing cycles.

Keywords:

catalysis, catalyst, gas cleaning, hot gas cleaning, tar removal

Topic:

Thermochemical conversion - Gasification for power and CHP and polygeneration

Subtopic:

Gasification for power and CHP and polygeneration

Event:

18th European Biomass Conference and Exhibition

Session:

VP2.1.30

Pages:

704 - 709

ISBN-13:

978-88-89407-56-1

ISBN-10:

88-89407-56-5

Paper DOI:

10.5071/18thEUBCE2010-VP2.1.30

Price:

FREE