Keith
Wondering if the Clear water pump should be mounted vertically and above Glycerine? So that no Glycerine settles in the bottom of it. PeterR -----Original Message----- From: Keith Addison [mailto:[EMAIL PROTECTED] Sent: Tuesday, 9 March 2004 6:16 PM To: biofuel@yahoogroups.com Subject: Re: [biofuel] biodiesel mixing >My question to the group involves a 55 gallon drum used as a >processing tank. If the mixing shaft were to be lowered straight >down into the center of the tank, would adequate mixing take place? >Or would a vortex form in the mixture and inadequate mixing take >place? I see some tanks have the mixer angled on the side of the >drum, I'm assuming to avoid having a vortex form. Would baffles >along the inside of the drum help? Thanks. Jonathan. Yes, baffles would help to increase agitation, presuming you know how much agitation you need. Why would a vortex mean inadequate mixing? Chuck Ranum has his mixer set at an angle from the side but still talks of a vortex. If the mixer turns fast enough you'll get a vortex whatever angle it's set at. How far down does the vortex go, all the way down to the mixing blades? Perhaps that would be too much, but the answer would be to decrease the speed or the angle or size of the mixing blades. Anyway, Jonathan, why not use a pump instead? Aleks Kac did some research on this and told me this: "As a rule of thumb you need 1000 W of shaft power for pump stirring on a 1000 litre/batch reactor as opposed to 3000 W of shaft power for turbine stirring for the same volume." I think pumps work better than stirrers, and it's a lot simpler to build a closed, fume-free processor with a pump. These 1" Clear Water Pumps are cheap and reliable, and work very well. Harbor Freight Tools -- 1" Clear Water Pump -- Item 1479-1VGA http://www.harborfreight.com/ <http://www.harborfreight.com/> Northern Tools -- Cast Iron 1in. Clear Water Pump, Model# 109955 (Warning -- very BAD at dealing with international orders!) http://www.northerntool.com/ <http://www.northerntool.com/> Northern Tool & Equipment Co. (UK) Ltd. -- 1" Clear Water Pump, Item No. 109955E http://www.northerntooluk.com/ <http://www.northerntooluk.com/> Best Keith Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html <http://journeytoforever.org/biofuel.html> Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ <http://infoarchive.net/sgroup/biofuel/> Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Sponsor ADVERTISEMENT Click Here <http://ad.doubleclick.net/ad/N3349.yahoo1/B1282054.27;abr=!ie4;abr=!ie5;sz= 300x250;code=18634;dcopt=rcl;ord=1078816972204882?> Click Here <http://us.adserver.yahoo.com/l?M=274551.4550177.5761904.1261774/D=egroupweb /S=:HM/A=2019528/rand=493331079> _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <http://groups.yahoo.com/group/biofuel/> * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of <http://docs.yahoo.com/info/terms/> Service. IMPORTANT: Notice to be read with this E-mail 1. Before opening any attachments, please check them for viruses and defects. 2. This e-mail (including any attachments) may contain confidential information for the use of the intended recipient. 3. If you are not the intended recipient, please: contact the sender by return e-mail, to notify the misdirection; do not copy, print, re-transmit, store or act in reliance on this e-mail; and delete and destroy all copies of this e-mail. 4. Any views expressed in this e-mail are those of the sender and are not a statement of Australian Government policy unless otherwise stated. 5. Finally, please do not remove this notice, so that any other readers are aware of these restrictions. [Non-text portions of this message have been removed] Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
