[Stoves] DEVELOPMENT OF A FLUIDIZED BED GASIFIER SYSTEM

[Jeff Davis]

Dear All,


http://www.nrbp.org/papers/040.pdf

Best wishes,

Jeff


Snip:
The objective of this project is to demonstrate a biomass conversion
system to produce cooking gas. The biomass conversion system consists of a
gasifier developed at Iowa State University, a gas cleaning train, a gas
storage tank, and a piping network to distribute the gas to village
households. Phase I of the project involves technical development of both
an air blown gasifier and an indirectly-heated gasifier fitted with a
latent heat ballast system. The fluidized bed reactor fitted with a latent
heat ballast system is capable of producing medium heating value gas. This
initial phase also involves development of a gas clean-up system. Phase II
is the installation and demonstration of the air-blown gasifier system at
a village in the Henan province of China. Phase III involves installation
of an indirectly heated gasifier system based on the latent heat ballast
system in another village in Henan.

The reactor will not be operated continuously, but only for an hour or two
during the day, producing enough cooking gas to supply up to 200 homes.
Contaminants are removed from the gas by a dry cyclone and a wet scrubber.
The wet scrubber consists of an impingement scrubber, a water film
cyclone, two water spray towers, two stages each consisting of an induced
draft fan and tar removal cyclone, and a sawdust filter. The induced draft
fans draw the producer gas through the clean-up train and provide the head
to fill the gas holder. The Phase II demonstration is taking place in the
Leizhuang Village outside of Nanyang. Approximately 40 households are
receiving gas for cooking.


-- 
Jeff Davis

Some where 20 miles south of Lake Erie, USA