[Gasification] reducing temp. of gasification

[Henri Naths]

Hi All
I Hope this is not a double post ( I posted this from my I phone earlier
this morning and it has yet to show up )...

Dear A.D. Karve
My exact thought a while ago was to achieve this temperature with an
internal electric arc furnace. The resulting gas can be put thru a catalyst.
Just lately was reminded by a colleague of the efficiency of electro static
precipitators and am presently researching their compatibility with producer
gas.
So : air tight electric arc furnace fed with co2 and preheated feed stock>
catalyst>98%cyclone cleaning>precip> final water filter cooling >dryer > co2
removal > o2 injection >ice>recycle hot co2 exhaust to preheat feed stock.
Just an idea.. maybe too complicated? Please send me your ideas.
HN

----- Original Message ----- 
From: "Anand Karve" <adkarve at gmail.com>
To: "Discussion of biomass pyrolysis and gasification" 
<gasification at lists.bioenergylists.org>
Sent: Saturday, September 10, 2011 11:41 PM
Subject: [Gasification] reducing temp. of gasification


> Dear All,
> one requires about 700C temperature for making producer gas. This is
> generally achieved by burning the feedstock itself, for which one
> introduces external air into the reactor. As a result, the producer
> gas gets diluted by the nitrogen in the air. If the process can be
> conducted in a closed vessel, which is heated from the outside, one
> can get combustible gas without all the nitrogen, but heating the
> feedstock inside a container cannot achieve the temperature that is
> required for producing producer gas, so that what one gets is
> primarily tar vapour. Has anyone thought of using a catalyst for
> getting pyrolysis gas at say 300 C? It would help me greatly, if such
> a catalyst were available.
> Yours
> A.D.Karve
>
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