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<DIV>Tom,</DIV>
<DIV> </DIV>
<DIV>Do you feel it would be possible to heat and vaporize a
sufficient quantity of biomass using this "radiant exhaust
heated retort" to fulfill the fuel needs of the engine which is providing
the heat to the "Retort"?</DIV>
<DIV>Granted, biomass "above" the pyro zone could be "directly heated" by
the still hot exhaust if it is allowed to enter low down on the
open top fuel hopper. Would this arrangement, add "to much" CO 2 to the
"product" or would it be possible to set up a water shift
reaction zone in the base of the retort for producing extra methane
from the CO 2 rich gas. I like the idea of excluding the nitrogen, even if it
takes a couple of KW of electricity from the generator to achieve such a
secondary reaction.</DIV>
<DIV> </DIV>
<DIV>GF</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 9/11/2011 11:44:48 A.M. Eastern Daylight Time,
tmiles@trmiles.com writes:</DIV>
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<DIV>Jim Mason does this on his Power Pallet. Exhaust has been used in various
ways to recover heat on gasification. Most often it is to dry or preheat
fuel. </DIV>
<DIV><BR></DIV>
<DIV>Tom</DIV>
<DIV><BR>T R Miles Technical Consultants Inc. 503-780-8185<SPAN
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<DIV><BR>On Sep 11, 2011, at 8:19 AM, GF <<A title=mailto:gfwhell@aol.com
href="mailto:gfwhell@aol.com">gfwhell@aol.com</A>> wrote:<BR><BR></DIV>
<DIV></DIV>
<BLOCKQUOTE type="cite">
<DIV><FONT color=black size=2 face=arial>
<DIV>Perhaps we should make a container which is heated by the exhaust gas
from the very generating set that burns the very gas we are producing.</DIV>
<DIV>I am sure I have seen my exhaust pipe glow, reaching 700 deg when
under full load.</DIV>
<DIV> </DIV>
<DIV>GF<BR><BR></DIV>
<DIV style="CLEAR: both"></DIV><BR><BR>
<DIV
style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">-----Original
Message-----<BR>From: Anand Karve <<A title=mailto:adkarve@gmail.com
href="mailto:adkarve@gmail.com">adkarve@gmail.com</A>><BR>To: Discussion
of biomass pyrolysis and gasification <<A
title=mailto:gasification@lists.bioenergylists.org
href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</A>><BR>Sent:
Sun, Sep 11, 2011 1:42 am<BR>Subject: [Gasification] reducing temp. of
gasification<BR><BR>
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id=AOLMsgPart_0_b52d9593-a17d-4ca6-9e06-c2b17fa1cd5e><PRE style="FONT-SIZE: 9pt"><TT>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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