Dear Greg, Please note this was forwarded to the Gasification list at its new home: [email protected]. Please be sure you are using the new list address.
Thank you, Mike Weaver ---------- Forwarded message ---------- From: Greg Manning <[email protected]> Date: Sat, Oct 2, 2010 at 11:08 AM Subject: Re: [Gasification] Gasification of torrefied biomass To: Discussion of biomass pyrolysis and gasification <[email protected]> Greetings Billy, and list members. In most designs of "homemade" downdraft gasifiers, IMO the feedstock can only push moisture content to the area of about 15%, however, if an "air dryer" is used in the tuyere air, 18% is attainable. Why I say the above, is that on the opposite side of things, having too little moisture will cause an excess clinkering due to the gasifier running "too hot". In your case a simple water injector system could be used to temper the overall reaction temperature, AND it kept at the high-end of reaction, could also employ the water/gas shift just above the reduction zone. this would have to be carefully managed, but could be done. Most gasifiers suffer from a massive excess's of moisture, my personal observations are that 4-9% is ideal for most feedstocks total moisture (air and feedstock combined). hope this helps. Greg Manning, Canadian Gasifier Ltd. Building Hi-Performance Gasifiers, Since 2001 Brandon, Manitoba, Canada 1 (204) 726-1851 _______________________________________________ Gasification mailing list [email protected] http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org
