Pretty much all I can tell you on what I was doing..... The wood chips were used to start the process and were at around 1,000 degrees measured six inches back from what I called the reduction zone before the tire grinding would stat feeding in the mix. Mostly we melted temperature probes and it was a government guy doing the testing as I had no instruments to measure the temp or what was going up the stack. He said the sulfur was a bit higher than on just wood but surprisingly low in his estimation. After he melted all his probes he left and I could never get him back. He sort of seemed to say the less they knew of what I was up to the better. Got an oyster harvester with a broken cable stuck in the middle of the bay. Might as well go walk on the bottom for a little and fix the beast. Hate to get wet.... Good luck on what you are going to do. Charles ---- Stephen Maupin <[email protected]> wrote: > Question: Do the tire chips develop a char base or liquify? . I'm planning a > test burn of wood/municipal bio-solids/and tire chips for gas quality > analysis. Any information prior to this would be appreciated. Seeking > enlightenment > > --- On Mon, 8/9/10, [email protected] <[email protected]> wrote: > > From: [email protected] <[email protected]> > Subject: Re: [Gasification] Ask a question. > To: "Discussion of biomass pyrolysis and gasification" > <[email protected]> > Date: Monday, August 9, 2010, 4:48 AM > > I have used tire grindings up to 50 or more % mixed with wood chips in my > cross draft gasifier for heating purposes. ( not well mixed. Just dumped in a > bucket of chips and a bucket of tire grindings from retread plant ) > No smoke or odor down wind except of normal smell of a wood gasification > boiler. > I can't describe it but it is unique and not unpleasant. > Charles > ---- Tom Miles <[email protected]> wrote: > > L Massam, > > > > Tire gasification is an interesting challenge. Many have tried it over the > > years but there are few industrial systems. My favorite project was called > > "Tyrolysis" in the Uk in the 1980s. An industrial plant was built (by Foster > > Wheeler, Hartlepool) to make oil as a substitute for British heating oil. > > The plant failed in a period of high energy prices. > > > > Another problem is that the tires gasify very quickly so it is difficult to > > control the reaction. We have seen several attempts to gasify individual > > tires that have failed partly due to the inability to control the rate of > > gasification. The rubber heats to the point where is gasifies in an > > explosive flash. > > > > A US passenger tire weighs about 20 lb. (9.07 kg), or 100 tires/ton (.907 > > mt). (In the US we generate the equivalent of one tire per person per year > > or 308 million per year.) 10 tires would weigh 200 lb (90.7 kg) containing > > about 5 MMBtu. That will make an impressive flare if it heats to the point > > where it all gasifies in a flash. > > > > Successful systems seem to use either direct combustion or pyrolysis > > (external heating). About 60% of the tires that are recycled in the Eastern > > US are burned in combustors or cement kilns. According to the Rubber > > Manufacturers Assn, who keeps track of Scrap Tires, the tire derived fuel > > market in 2009 was estimated at 2.6 million tons per year. No tire gasifiers > > were reported. > > (2009 Scrap Tire Market Report, RMA, > > https://www.rma.org/getfile.cfm?ID=985&type=publication) > > > > Most people gasify tire chips rather than whole tires. We gasified (50 mm) > > tire chips successfully in a fluidized bed gasifier, but removing the wire > > bead is a problem. If it is not removed it will de-fluidize the bed. > > > > Conrad Industries, in Washington has operated a tire (chip) pyrolysis plant > > for many years. > > http://www.conradind.com/ > > > > Casings could probably be coarsely shredded and pyrolyzed if you have a use > > for the heat. That way you can more or less meter the fuel into the reactor. > > > > > > Tom Miles > > www.gasifiers.bioenergylists.org > > > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of L MASSAM > > Sent: Sunday, August 08, 2010 12:31 PM > > To: [email protected] > > Subject: [Gasification] Ask a question. > > > > I am new to all of this and have been following the gasification community > > growth for a little while now. I am interested in gasifying whole car tyres, > > say 10 per batch. Can someone help me design this machine. I am sure I have > > picked up enough info to build the reactor but I need some help with the > > distillation process. All help and advice is sought. I have a tyre business > > and find that disposing these casings is expensive but furthermore the power > > stored within must be vast. > > > > I am awaiting your soonest responses. > > _______________________________________________ > > Gasification mailing list > > [email protected] > > http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org > > http://gasifiers.bioenergylists.org > > http://info.bioenergylists.org > > > > > > > > _______________________________________________ > > Gasification mailing list > > [email protected] > > http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org > > http://gasifiers.bioenergylists.org > > http://info.bioenergylists.org > > _______________________________________________ > Gasification mailing list > [email protected] > http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org > http://gasifiers.bioenergylists.org > http://info.bioenergylists.org > > > > _______________________________________________ > Gasification mailing list > [email protected] > http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org > http://gasifiers.bioenergylists.org > http://info.bioenergylists.org
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