Very good questions Ray I hope to collect a sample of the volatiles and the gases from PYROLYTIC (as opposed to total or Imbert ) gasification of ordinary wood. While I'm doing it, I should also collect samples from mesquite gasification and see what they contain.
I'll report back when I get results. Yours truly, Tom REED Dr Thomas B Reed President, The Biomass Energy Foundation www.Woodgas.com On Jul 12, 2011, at 7:19 PM, Ray Menke <[email protected]> wrote: > On July 9th, Dr. Reed wrote: "Pyrolytic gasification > Wood + Heat ==> Charcoal + vinegar gas ( acetic acid etc.) > is a piece of cake compared to total gasification in which lignin > contributes phenolics to make tars." > Also, on April 24th on the Stoves List, he commented: "I read that the > lignin content of most wood is 15-25%, but that Mesquite is 64%." > > This morning as I was nearing the end of a cooking session using a > pair of TLUD stoves, I added some 1" cubes of mesquite hardwood so I > could extend the burn time of both of the stoves. I noticed a short > burst of tarry smoke when I dropped three or four of these little > chunks into each stove (near the end of the run). (Usually, I remove > the pot or pan and toss several chunks of junk softwood into the > stove..This time I wanted a little more heat, so I threw in the > Mesquite chunks.) > From this observation, should I conclude that dry Mesquite would not > be a good fuel to use in a Micro Gasifier where engine grade gas was > desired? Would it be a more difficult task to break down the Tar in > the hearth? If one could somehow find the magic in the proper hearth > design and the exact air flow rate, could the tar be totally consumed. > I guess if it wasn't totally consumed (cracked), one would end up > with a nasty mess in the cyclones, coolers, and filters. If one used > mesquite charcoal in the micro gasifier, would the problem go away? > By "micro gasification", I'm thinking of hearth restrictions in the > range of 2.5 to 3.5 inches in diameter. > Is the extra lignin a good thing to have, or should I start collecting > cedar and scrap construction lumber for future use? > > > -- > Ray Menke > > _______________________________________________ > 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/
