[Stoves] Gasification_08_2004.pdf

[Crispin Pemberton-Pigott]

Dear Friends

This was found by Frans and I am forwarding it to the group because there
are so many interesting descriptions of technologies in it for gasifying
biomass.

http://download.nachhaltigwirtschaften.at/pdf/status_of_gasification_08_2004
.pdf

This is an example from India (on page 137)

60 kWel Xylowatt gasifier
The gasifier is based on the Indian Institute of Science (IISc) technology.
It is an air suction, a low pressure, open-top, co-current, downdraft,
moving bed system with a specially designed lateral air inlet to reduce tar
production. A pilot demonstration plant designed for 130 kWth and 55 kWel
capacity is in operation in the sawmill Despond in Bulle (FR). The
gasification feed material is uncontaminated woody biomass materials. Total
engine hours 1'940 (March 2004).
The plant is composed by:
. Reactor of gasification (included wood silo, screws, ash extraction),
. Gas treatment devices: cyclone, heat exchanger, scrubbers, polyester
filter and blower
. Condensate treatment devices: decanter, flocculation, cooling system, and
pumps,
. Naturally aspirated gas engine and generator.

Air-blown gasification tests with biomass feed up to 8 cm in particle size,
produced a gas
composition with 18% CO, 13% CO2, 2% CH4, 14% H2, 53%N2, 300 mg/Nm3
Particle, and
700 mg/Nm3 Tar.

Contact: Xylowatt SA, En Budron A12, CH-1052 Le Mont s/Lausanne, P.
Giordano; Phone:
+41 21 651 69 69, Fax: +41 21 651 69 68, Home Page: http://www.xylowatt.ch,
e-mail:
info at xylowatt.ch


Regards
Crispin