Tom, 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"? 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. GF In a message dated 9/11/2011 11:44:48 A.M. Eastern Daylight Time, [email protected] writes:
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. Tom T R Miles Technical Consultants Inc. 503-780-8185 [email protected]_ (mailto:[email protected]) Sent from mobile. On Sep 11, 2011, at 8:19 AM, GF <[email protected]_ (mailto:[email protected]) > wrote: 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. I am sure I have seen my exhaust pipe glow, reaching 700 deg when under full load. GF -----Original Message----- From: Anand Karve <[email protected]_ (mailto:[email protected]) > To: Discussion of biomass pyrolysis and gasification <[email protected]_ (mailto:[email protected]) > Sent: Sun, Sep 11, 2011 1:42 am 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 _______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected]_ (mailto:[email protected]) to UNSUBSCRIBE or Change your List Settings use the web page _http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org_ (http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org) for more Gasifiers, News and Information see our web site: _http://gasifiers.bioenergylists.org/_ (http://gasifiers.bioenergylists.org/) _______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected]_ (mailto:[email protected]) to UNSUBSCRIBE or Change your List Settings use the web page _http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioener gylists.org_ (http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org) for more Gasifiers, News and Information see our web site: _http://gasifiers.bioenergylists.org/_ (http://gasifiers.bioenergylists.org/) = _______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenerg ylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
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