Hi GF, Once the gases have formed and exists in a free space above the bed, it is unlikely to change due to the influence of refractory radiation. My understanding of this situation, is that you add more air to oxidise and combustion any hydrocarbons turning smoke gas into CO2 (cleaner emission), or like in a gasifier situation, pass it through an incandescent carbon bed at temperatures over say 1,000C> to enable the thermal disassociation to take place in a reducing environment. You end up then with the smoke gas being (theoretically) all producer gas hopefully hydrocarbon free (:-).
I was informed that some steam locomotives in South Africa were converted to the type of gasifying principle and was used as an example of gasification during a conference there about 1985 from memory. I have a photo somewhere in the files. Hope this helps. Doug Williams, Fluidyne. > > On Jan 3, 2014, at 1:05 AM, [email protected] wrote: > > > > > > Regarding the reflected heat from the refractory: If you were to travel on > > the footplate of a steam locomotive at full regulator, you might observe a > > temperature of 2,500 f in the fire box. in which there is generally a > > refractory (brick) arch above the grate which extends the flame pattern and > > generally helps the secondary air entering above the grate to insure > > compete combustion. I have observed these arches to glow bight Yellow, the > > surface of the brickwork actually melting with the heat. I am certain the > > radiation has a lot to do with complete combustion. Would this form of > > radiation help refine "smoke" (gas) breaking it down into short chain > > Molecules? > > > > GF _______________________________________________ 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/
