[Gasification] combustion of tarry producer gas

[Mark Ludlow]

Thank you all, for your thoughtful replies.

Mark

-----Original Message-----
From: gasification-bounces at listserv.repp.org
[mailto:gasification-bounces at listserv.repp.org] On Behalf Of Tom Miles
Sent: Saturday, October 27, 2007 9:27 AM
To: 'Discussion of biomass pyrolysis and gasification'
Subject: Re: [Gasification] combustion of tarry producer gas

Mark,

Nexterra, the newest industrial scale gasifier in North America, is working
on tar reduction for engine applications at their 8 MMBtuh pilot facility in
Kamloops, British Columbia. I suspect, however, that their solution will be
partial oxidation which burns gases to crack tars, not burning tars to
enhance gasification, which I think you are suggesting. 
http://gasifiers.bioenergylists.org/
http://gasifiers.bioenergylists.org/nexterraenergy

Tom 

> Gasification, in its present popular incarnation, assumes that cracking
> of
> tarry gas requires a parasitic process deriving energy from the primary
> reaction zone. This is very elegant, in theory, but is dependent on a
> number
> of mechanical parameters such as fuel condition and form factor. I ask:
> cannot the tars from a simple updraft gasifier be considered a fuel
> source
> unto themselves?  Between their gaseous state and their troublesome
> crystallized state there must be a liquid state that would facilitate
> their
> transport back into either the primary gasification/reduction zone or a
> secondary oxidation zone, providing energy for the primary gasification
> transformation.
> 
> 
> 
> Am I dreaming?



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