HomeRoast Digest


Topic: Build your own smoke-eater (34 lines)
1) From: James Gundlach
Deward's description of the Z&D's smoke eater noted that it was based 
on a small version of the wood stove catalytic combustor.  Since I have 
heated with wood for the last thirty years, I know a little about how 
these things work.  In effect, the catalytic combustor is a ceramic 
honey comb foundation coated with a catalyst that causes smoke that is 
over 500 F to ignite and burn.  There are a lot of sources for 
replacement catalytic combustors because they need to be replaced on 
stoves after about 12,000 hours of use.
       Here is how I would go about building a first draft of a 
smoke-eater to take the smoke away from wok roasting.  I would build a 
cone shaped hood that would stand over the wok and at the top I would 
put the intake to a heat gun.  On the exhaust of the heat gun I would 
mount a tube that contained a piece of the wood stove catalytic 
combustor.  My guess is that a couple of square inches of catalytic 
comb about one inch thick would be plenty.   I have looked around and 
found a source of catalytic comb that is 1.8" by 6.8" by 1" for about 
$42.00 plus shipping.  I would cut a piece off with my diamond rock saw 
and rig up some way to mount it in an exhaust tube that would fit the 
heat gun.  For safety reasons, I would probably need something at the 
end of the exhaust tube that would diffuse the heat.
Any suggestions or insights from others are welcome.  We are still 
dealing with excessive Christmas expenses so it will be a while before 
I can give it a try.  Just what I need, another project.
Jim Gundlach
On Tuesday, January 14, 2003, at 06:30 PM, Ben Treichel wrote:
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