Re: Water as a byproduct of gasification

["Kevin Chisholm" <kchisholm@ca.inter.net>]

Dear Neal

What you are getting at basically is a "condensing stove."

This can certainly be done. Simply cool the flue gasses below their
dewpoint, and collect the dew.

However, there would probably be a lot of problems with condenser
construction and operation. It should be stainless steel, at least in the
"front end", and possibly plastics could be used in the "tail end" to get
extra surface for heat exchange. There may be operating problems with tars
and particulates building up on the condenser surfaces.

The "water quality" would be something else again. With a sulphurous fuel,
the condensate would be acidic. With biomass, it could be acid to neutral to
strongly alkaline, depending on the presence of ash and products of partial
or complete combustion.

As a "best possible scenario", contact somebody who sells a propane or
natural gas condensing furnace, and ask them about he quality of the
condensate. Biomass condensate would be downhill from there.

Kindest regards,
Kevin Chisholm

----- Original Message -----
From: <CAVM@aol.com>
To: <stoves@crest.org>
Sent: Sunday, April 14, 2002 12:14 PM
Subject: Water as a byproduct of gasification


> Let me explain my reasoning for thinking that water is a byproduct.   We
> developed a new heating system for poultry houses in part to combat the
> humidity put into the air by the old open flame propane brood heaters.
Now
> the poultry houses in KY use our hot water heating system in many of the
> houses.
>
> If water vapor comes off of the combustion of propane and natural gas, I
> reasoned that it would like wise be a byproduct of the combustion of gas
from
> a gasifier.
>
> If I had an unlimited inexpensive fuel, a gasifier and a use for the heat
> produced by the combustion of the gas, water could be a cheap byproduct of
> the process.  Let's say that I had a large coal mine in an arid area.  I
want
> to gasify the coal, burn the gas and collect the water byproduct.  Of
course,
> the burning of the gas would be in a value added process, not wasted.
>
> If this is correct, even to a small degree, couldn't a gasifier stove in
an
> arid part of Africa, Afghanistan or anywhere, produce a small amount of
> collectable water as it did its work?
>
> Neal Van Milligen
> CAVM@AOL.com
>
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Stoves List Archives and Website:
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http://crest.org/discussiongroups/resources/stoves/ (Under construction)
http://www.ikweb.com/enuff/public_html/Stoves.html (Original)

Stoves List Moderators:
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