Pall Filtersystems GmbH Werk Schumacher Crailsheim

Crailsheim, Germany

Pall Filtersystems GmbH Werk Schumacher Crailsheim

Crailsheim, Germany
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Nacken M.,Pall Filtersystems GmbH Werk Schumacher Crailsheim | Ma L.,Vrije Universiteit Brussel | Heidenreich S.,Pall Filtersystems GmbH Werk Schumacher Crailsheim | Verpoort F.,Ghent University | Baron G.V.,Vrije Universiteit Brussel
Applied Catalysis B: Environmental | Year: 2012

In order to improve the tar reforming performance of a catalytic filter in hot gas cleaning of biomass-derived syngas, as new approach, 45ppi ceramic foams of 10mm wall thickness were used as ceramic support for catalyst integration. Screening of this ceramic support was performed by varying the type of catalyst support, its loading and the NiO loading. As a result, a SiC ceramic foam with a MgO-Al 2O 3-NiO catalytic layer, a catalyst support density of 0.03g/cm 3 and a NiO density of 0.02g/cm 3 was identified as most active catalytic ceramic foam. After the transfer of the corresponding impregnation procedure to an Al 2O 3 based ceramic foam to be able to operate at the target filtration temperature of 850°C, a naphthalene conversion of 99% was achieved at a superficial velocity of 2.5cm/s in the presence of 100ppmv H 2S. At doubled superficial velocity the conversion still achieves 93%. The transfer of the catalyst integration procedure for the most active SiC candle supported MgO-Al 2O 3-NiO layer to an Al 2O 3 filter candle with 10mm wall thickness has led to a naphthalene conversion of 87% at 850°C at a superficial velocity of 2cm/s in the presence of 100ppmv H 2S being 8% higher than in the SiC based candle. The combined Al 2O 3 based catalytic filter and ceramic foam disk system shows an overall conversion of 99% at a superficial velocity of 2cm/s. Based on these results the corresponding overall conversion of an Al 2O 3 based catalytic filter candle with integrated catalytic ceramic foam was precalculated to 98% at 850°C in the presence of 100ppmv H 2S indicating the technical feasibility of efficient tar reforming using this novel catalytic filter candle design. © 2012 Elsevier B.V.


Nacken M.,Pall Filtersystems GmbH Werk Schumacher Crailsheim | Baron G.V.,Vrije Universiteit Brussel | Heidenreich S.,Pall Filtersystems GmbH Werk Schumacher Crailsheim | Rapagna S.,University of Teramo | And 4 more authors.
Fuel Processing Technology | Year: 2015

Abstract The catalytic activity of a new catalytic filter of combined design consisting of a catalytic filter candle with an integrated catalytic ceramic foam was calculated under model gas conditions at 800 and 850 °C in the absence and presence of 100 ppmv H2S on the basis of separate and combined measurements of appropriate catalytic filter element and ceramic foam disk samples. Real gas validation of the determined model gas activity of the catalytic filter of combined design in a bench-scale gasifier was performed to check-up, if model gas conversions can be used as bases for the prediction of real tar conversions. A calculation of the model gas activity of the catalytic filter at a superficial velocity of 2 cm/s based on the disk measurements results to 99% naphthalene conversion at 850 °C in the absence of H2S and 94% in the presence of 100 ppmv H2S. At 800 °C, the calculated conversion is 95% in the absence and 70% in the presence of 100 ppmv H2S resulting in an estimated conversion of 85% at an H2S content of 40 ppmv. This value is comparable with the measured real tar conversion of 81% at 790 °C and a superficial velocity of 2.5 cm/s. © 2015 Elsevier B.V. All rights reserved.

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