Li, The yellow flame indicates that you have an insufficient primary combustion air mixing of the producer gas. At the flare, drill six to eight holes below the elevation of the inlet line of the producer gas. Velosity of the gas will draw fresh air from the bottom air inlets to pre-mix with the syngas. You will need a 50/50 mix of air/syngas. This will allow the flare to exhibit a pure blue flame when the fuel to primary air mixture is correct. If you have too much air, you can plug some of the holes or install a slide gate damper that allows adjustment of the air volume. Good Luck
Stephen C.Maupin Principal Maupin Technologies, Inc Mckenzie TN 38201 diversifiedtn.com "themaupingasifier".com --- On Tue, 10/12/10, Li CHEN <[email protected]> wrote: From: Li CHEN <[email protected]> Subject: [Gasification] yellow flame of syngas combustion To: [email protected] Date: Tuesday, October 12, 2010, 4:19 AM Dear all, I recently tried to burn the syngas produced by my gasifier, and I just filmed the burning process (please see http://www.youtube.com/watch?v=0q7_s0RbHIM excuse me for my french). Note that the gasifier is just designed and has been never runned before. So I was happy to see the flame. After the experiments, I also found the formation of soot or black carbon on the surface of the inox tube. It seems that yellow flame means that the combustion is not complet. Next step I want to connnect the gas outlet with a bunsen burner in order to control the rate of the gas with the rate of the air. How you think? whether this is possible to favorite the complet combustion or not? In fact, this is the first time that I burned my syngas, so I wonder whether the yellow color indicates the quality of my syngas not? Welcome to any comment. Kind regards, -- Dr Li CHEN Responsable gazéification S3d - Solutions Déchets& Développement Durable 9 rue Alfred Kastler CS 60744 44307 Nantes Cedex 3 Tel. : +33(0)2 51 13 54 54 Mob. : +33(0)6 32 06 17 41 Fax : +33(0)2 51 13 57 65 www.sol3d.com _______________________________________________ The Gasification list has moved to [email protected] - please update your email contacts to reflect the change. Please visit http://info.bioenergylists.org for more news on the list move. Thank you, Gasification Administrator _______________________________________________ The Gasification list has moved to [email protected] - please update your email contacts to reflect the change. Please visit http://info.bioenergylists.org for more news on the list move. Thank you, Gasification Administrator
