Re: Water as a byproduct of gasification

[AJH <andrew.heggie@dtn.ntl.com>]

On Sat, 13 Apr 2002 23:26:01 EDT, CAVM@aol.com wrote:

>
>So, anybody have any idea how much water we get as a byproduct for the 
>gasification of X amount of biomass of any type?  

There should be no water in gasification of any solid fuel, the
products should ideally all leave the system as CO N2 and H2 in an air
blown gasifier. In practice tars and products like alkali metal
compounds are formed.

The question should go over to the gasification list.

I think you probably meant was can we calculate the amount of water in
the flue of a biomass combustion device, to which Kevin has given an
answer.

More fully we can calculate the water resulting from combustion of dry
biomass. Tom Reed has modeled woody biomass as C10H14O6 plus ash, as a
rule of thumb. So for each mole of this idealised "wood" we can
combust it to yield 7H2O, about 54% of the dry ash free weight of the
biomass.

To this must be added the water from the original moisture content of
the wood and the trivial amount in the humidity of the combustion air.


>Can it be captured?

Some quite easily with a flue gas condenser depending on the
temperature and humidity of the ambient air, the remainder only with
great difficulty. All at considerable additional capital cost.

AJH

-
Stoves List Archives and Website:
http://www.crest.org/discussion/stoves/200202/
http://crest.org/discussiongroups/resources/stoves/ (Under construction)
http://www.ikweb.com/enuff/public_html/Stoves.html (Original)

Stoves List Moderators:
Ron Larson, ronallarson@qwest.net
Alex English, english@adan.kingston.net
Elsen L. Karstad, elk@wananchi.com www.chardust.com

List-Post: <mailto:stoves@crest.org>
List-Help: <mailto:stoves-help@crest.org>
List-Unsubscribe: <mailto:stoves-unsubscribe@crest.org>
List-Subscribe: <mailto:stoves-subscribe@crest.org>

Sponsor the Stoves List: http://www.crest.org/discuss3.html
-
Other Biomass Stoves Events and Information:
http://www.bioenergy2002.org
http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy
http://www.crest.org/articles/static/1/1011975339_7.html Gasification
http://www.crest.org/articles/static/1/1011975672_7.html Carbon

For information about CHAMBERS STOVES
http://www.ikweb.com/enuff/public_html/Chamber.htm