Dear Alex and all Several years ago I a spent year or so measuring flame speeds of combustion for various gasolines, and reading about them. My memory is that CO HAD THE SLOWEST FLAME SPEED OF ALL, O.2 ft/sec; almost all other gases WERE 0.5 ft/sec; and hydrogen (and probably acetylene) were 5 ft/sec. This is my memory, but I might be off.
TOM reed Dr Thomas B Reed President, The Biomass Energy Foundation www.Woodgas.com On May 18, 2011, at 9:44 PM, Alex English <[email protected]> wrote: > My father in law did some of the early work on pure acetylene detonation at > Los Alamos in the 1950s. He tells the story of taking the "shocking" results > to Eisenhower's science advisor to warn of the dangers. Advice that was > dismissed until an industrial plant blew up. > > He was in to nuclear gasification. Lets make a harbor in Alaska. > > > > As for premixed producer gas. Does any one have a top speed for an optimum > producer gas flame? Then can't you just calculate or trial the pipe diameter > leading to the burner that keeps the premix moving faster than that speed. > > Top speed for hydrogen in air is around 12 ft/sec. Can you live with that? > > > Alex > > On 5/18/2011 8:27 PM, David G. LeVine wrote: >> On 05/17/2011 10:41 PM, Anand Karve wrote: >>> Dear List, >>> A pure gas inside the cylinder or inside a hose pipe would not burn >>> unless it is mixed with oxygen. One can hold a candle in front of the >>> nozzle of a cylinder full of combustible gas like LPG or CNG and then >>> open the valve. The gas would burn only when it comes out of the >>> cylinder. Migration of the flame into the transmission hose is >>> possible only if somehow oxygen enters the hose. >>> Yours >>> A.D.Karve >> >> Actually, while acetylene doesn't burn without oxygen, it can decompose >> (usually due to pressure) and generate significant heat and pressure. >> Often this is called an explosion (it isn't, exactly, but the results >> are spectacular.) >> >> Dave 8{) >> >> _______________________________________________ >> 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/ >> >> > > _______________________________________________ > 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/ _______________________________________________ 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/
