Dr. Dr. Karve, Sieves (membranes mostly) have been around a pretty long time. Usually they provide 99.9% N2. I used them to provide an "inert" blanket for a chemical reaction. Most liquid gas suppliers (Airgas; Air Liquide; etc.) will put a system in for you. If you had a need for the N2, then the "waste product" O2 and Ar and other trace elements would come free. But these membranes don't operate spontaneously. They require a differential pressure. Producing this may eat-up all of your gains!
Best, Mark From: [email protected] [mailto:[email protected]] On Behalf Of Anand Karve Sent: Saturday, March 17, 2012 9:52 PM To: Discussion of biomass cooking stoves; Discussion of biomass pyrolysis and gasification Subject: [Gasification] Exclusion of nitrogen from air Dear workers of stoves and gasifiers, when one uses atmospheric air as a source of oxygen, one unnecessarily heats up the nitrogen in the air. This nitrogen ultimately goes out of the chimney, taking with it a lot of heat. The technologies based on wood as fuel are pretty old, but one can revive them, using some of the more recent techniques. A person who owns a foundry told me that a moleular sieve was now available for separating nitrogen from oxygen. Has anybody heard of it? Can it be used in producing a better stove and a better gasifier? Yours A.D.Karve -- *** Dr. A.D. Karve Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
_______________________________________________ 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.bioenergylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
