Tom The temperature in gasifier depends on a number of factors. One of the most important is the lambda value. Some of the Others are the water and ash content.
The reactivity of the fuel (particle size) should be adjusted to the reactor principle and should largely be independent of the density of the fuel – but can to a certain extent be influenced by the porosity. The ratio between char and volatiles does have an influence on operation on a few very advanced staged gasification principles but for most gasifiers one can not adjust lambda different in the different reaction zones. Thomas Fra: Gasification [mailto:[email protected]] På vegne af Tom Reed Sendt: 23. maj 2015 20:17 Til: Discussion of biomass pyrolysis and gasification Emne: Re: [Gasification] Difference between Coal and biomass gasification Dear Thomas Koch and ALL: Thomas asks a very interesting question. Best answer would be for someone (me?) to get a batch of coal and try it. First, I would expect that it m i g h t burn up the gasifier. Coal burns so much hotter than wood. But I hope the stainless steel can stand it. Secondly it would burn twice as long due to the high density of the coal and the high volatile content which could keep it from burning up. I hope someone will try it and give a report. I'm on the road, but will try it when I get home if no one else does... TOM REED Thomas B Reed 280 Hardwick Rd Barre, MA 01005 508 353 7841 On May 22, 2015, at 11:51 AM, Thomas Koch <[email protected]<mailto:[email protected]>> wrote: Hi Saiteja That depends very much on which principle of gasifier you are using. If you use an entrained flow gasifier the only real difference is the pretreatment equipment. Best regards Thomas Koch Fra: Gasification [mailto:[email protected]] På vegne af Saiteja Chinta Sendt: 22. maj 2015 20:28 Til: [email protected]<mailto:[email protected]> Emne: [Gasification] Difference between Coal and biomass gasification Hi, I want to know what would be major design variations while designing for gasifiers which are coal fed from that of biomass. Thanks _______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected]<mailto:[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/
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