Greetings Brian, and List.
Brian, a blue flare only happens during cold air AND/OR rotting wood, both contribute to a higher methane (CH4) component in the gas. Violet with light yellow wisps in the tips is considered a high H2 (Hydrogen) component. Red is tar, plain and simple. You might have violet, BUT it's being masked by the red, only way to find out is if you can measure the core temp, near the hearth (just above it) 800c (1470f) is considered Ideal, higher up, in the core, 1100c (2000f)is common, if your temperatures are lower than that, that would explain the tar-red. Greg Manning, Canadian Gasifier Ltd. Building Hi-Performance Gasifiers, Since 2001 Brandon, Manitoba, Canada 1 (204) 726-1851 -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of Brian and Cara Paasch Sent: Saturday, July 24, 2010 9:08 PM To: Discussion of biomass pyrolysis and gasification Subject: [Gasification] Can't get to blue flare Hi all, We recently started testing our downdraft gasifier. So far we haven't been able to move from a yellow/red flare to a blue flare. I've searched the gasification archives and as best I understand, we need more air running through our system. Is that correct? We've increased the air over previous test runs but our flare is showing no sign of going from yellow to blue. As shown in this video: http://www.youtube.com/watch?v=9X6WPlhyOWc&feature=channel we have a pretty clean flare, no obvious smoke, but day or night, our flare is most certainly NOT blue. Anything else we should be considering? Thanks! -brian PS Our wood moisture content is less than 15%. _______________________________________________ Gasification mailing list [email protected] http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org http://gasifiers.bioenergylists.org http://info.bioenergylists.org No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.851 / Virus Database: 271.1.1/3025 - Release Date: 07/24/10 01:36:00 _______________________________________________ Gasification mailing list [email protected] http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org http://gasifiers.bioenergylists.org http://info.bioenergylists.org
