European Bio-Energy Projects
European Bio-Energy Projects
European Bio-Energy Projects
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NOVEL CHP process.<br />
Results<br />
The development of the catalytic filter included<br />
testing and optimisation of catalyst formulations<br />
with simulated and real gases. Novel modified<br />
nickel-activated alumina filter substrates were<br />
developed, prepared and screened. Improvement<br />
in the resistance to deactivation by sulphur<br />
compounds in biomass gasification was one of the<br />
main objectives and achievements of the work.<br />
Valuable information about catalyst improvement<br />
techniques was obtained. The catalytic filter was<br />
also tested with real gases and promising results<br />
were achieved. Preparation procedures for largescale<br />
candle filters were also developed.<br />
The long-term testing of the nickel monolith was<br />
performed with a slipstream apparatus that was<br />
connected to a CFB gasifier. The total test length<br />
was 2 267 h. The main conclusions of the long-term<br />
test were: 1) the nickel monolith catalyst activity<br />
remained at a high level during the test, 2) it is<br />
probable that the catalyst will remain active for<br />
longer periods of time, 3) tar conversion after the<br />
test was 92% and ammonia conversion 70 % at the<br />
900 °C operation temperature, 4) fouling or clogging<br />
of the monolith by carbon did not occur.<br />
The technical feasibility of the monolith-based<br />
concept was demonstrated by performing a pilotscale<br />
test run with a process consisting of a<br />
NOVEL fixed bed gasifier, a catalytic reformer<br />
followed by a filter and gas scrubber/cooler.<br />
The gas produced had very low tar (< 100<br />
mg/Nm3), ammonia (< 50 ppm) and particle<br />
(< 5 mg/ Nm3) contents and it can be considered<br />
Catalytic filter. The slipstream catalyst testing unit.<br />
suitable for use in modern turbo charged engines.<br />
Optimised operation conditions were found for<br />
the nickel monolith and the effects of the main<br />
process variables were studied. These included<br />
temperature, gas residence time, partitioning of<br />
the air feeding, gas H2O/C* ratio and gas<br />
superficial velocity. This work also included<br />
screening of limiting operation conditions as<br />
well as studies on the effects of process starting<br />
and shutting down procedures.<br />
The technical and economical evaluation of<br />
the NOVEL CHP process gave very positive<br />
results considering the promotion of the plant.<br />
The rather interesting aspects are the reduced<br />
size of the plant, the continuous operational<br />
system and the capability of gasifying various<br />
types of biomass, without endangering the<br />
performance of the gas engine. With these<br />
characteristics the diffusion of the technology<br />
might be successful, especiallyin the present<br />
<strong>European</strong> market conditions.<br />
99<br />
INFORMATION<br />
References: ENK5-CT-2000-00305<br />
Programme:<br />
FP5 - <strong>Energy</strong>, Environment and<br />
Sustainable Development<br />
Title:<br />
Tar Decomposition by Novel Catalytic Hot<br />
Gas Cleaning Methods – NOVACAT<br />
Duration: 27 months<br />
Contact point:<br />
Pekka Simell<br />
VTT Processes<br />
Tel: +358-9-4565461<br />
Fax: +358-9-460493<br />
pekka.simell@vtt.fi<br />
Partners:<br />
VTT (FIN)<br />
Universidad Complutense de Madrid (E)<br />
Vrije Universiteit Brussel (B)<br />
Sereco <strong>Bio</strong>test (I)<br />
Maridiana (I)<br />
Condens (FIN)<br />
EC Scientific Officer:<br />
Garbiñe Guiu Etxeberria<br />
Tel: +32-2-2990538<br />
Fax: +32-2-2993694<br />
garbine.guiu@cec.eu.int<br />
Status: Ongoing