pete, thank you for the interesting report over on your site. i enjoyed it, especially the musings on dolomite for tar cracking. it seems you are getting dolomite to go through the reactor and not slag. that's interesting and good. at imbert temps you'll get slagging.
considering a separate route, i'm curious if any of you have experimented with a center air tube with spread nozzle at the end. this might an interesting way to convert the basic open core unit to a nozzle based one. as you know, holding the flame front in one single place at different flow rates is a basic problem of the open core design. later efforts went to multi level air inject to get such control, but still without a close top those nozzles don't create much blast and the cross sectional area of the bed is not covered with tar cracking heat. the center air tube with spreader nozzle would be easier than adding nozzles through the sides of the reactor. you could weld a couplers with threads into the lid, then be able to change downtube heights and different configurations. add some seal on the lid so air can't get around it. the spread nozzles would be like the buck rogers design. here's the patent with a drawing of what they did. http://www.google.co.il/patents?id=p28tAAAAEBAJ&printsec=drawing&zoom=4#v=onepage&q&f=false interestingly, one of the main guys who did the buck rogers visited us awhile back and he disabused me of the understanding that these radial pipes were spread nozzles. that's what we've always told ourselves here, but he said they ultimately only used them for agitation. they mostly control flame front height by variable grate and center tube shaking, essentially moving the material through faster or slower to keep the front in the correct place. i was very surprised by this, as i thought the whole point of that assembly was to create the equivalent of a combustion spread lobe to mimic what you get in a throat and nozzle type. despite what they did in the end, you can do differently. i think it would be interesting to see if you could improve performance with this type of motivated air control. maybe even try multiple tubes down the side with elbows to direct inward. essentially make the nozzle ring, but fed from the top. you could add a slide in cone taper too to get the imbert type constriction. jim On Sun, Dec 18, 2011 at 2:47 PM, Pete & Sheri <[email protected]> wrote: > This message is for any users of the JXQ-10 or Stak 10K gasifiers (or anyone > seriously interested in obtaining one) who intend to use them to produce > engine grade fuel. > > > > The question on everyone’s mind is: > > > > “How can I make my machine produce engine grade gas for decent periods of > time?” > > > > Several people have had partial success so far. I (we) know that this > device isn’t an imbert style machine, but we who have them do want to see > how far they can be pushed. > > To that end: > > I have been accumulating correspondence between myself and about 15 other > users/interested parties since June of this year. > > -Many questions have been asked and answered. > > -Several members have been reporting test results > > -Several members have been making changes and modifications to the machines > and the process. > > > > These messages are simply arranged (roughly) by date, by correspondent, > newest entry first, on the following webpage: > > > > http://www.spaco.org/Woodgas/JXQ-10forum.htm > > > > If you are a user of one of these machines (or are seriously interested in > getting one), and have some input or some serious questions, please check > out that page and give us input as you see fit. > > > > NOTE: Senior members of this list are unlikely to gain any new knowledge by > visiting this page.---- yet, anyway. > > > > Pete Stanaitis > > ---------------- > > > _______________________________________________ > 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/ > -- ------------------------------------------------------------------------------ Jim Mason Website: http://www.whatiamupto.com Current Projects: - Gasifier Experimenters Kit (the GEK): http://www.gekgasifier.com - Escape from Berkeley alt fuels vehicle race: www.escapefromberkeley.com - ALL Power Labs on Twitter: http://twitter.com/allpowerlabs - Shipyard Announce list: http://lists.spaceship.com/listinfo.cgi/icp-spaceship.com _______________________________________________ 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/
