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That must be your processor pump? |
Member |
Hi Jon
Tank looks great-you will need all Fuel Farmers pine shavings to fill that for more expts!! All the best making your new processor-depending on batch size,you are going to be using an ibc of methanol (200 gal tote)every 5 or 6 batches-Wow that is some processing. |
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For 300 gallons you use 75 gallons od methanol, the standard stainless tote of methanol is 345 gallons, I usually go 50/50 new/distilled so it is stretched from four batches to eight or nine.
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member 2009 Sponsor |
Have you considered Murphy's Machines pump ? **My reactor/processor :B100WH.com **The Colaborative Biodiesel Tutorial **B100 Heated Winter System ** Biodiesel Glycerine Soap - Make & sell soap from Biodiesel Glycerine |
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I have put several of his pumps on reactors, they are the gold standard, none better.
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Thanks guys!
Speaking of methanol, what are you mixing your 75 gallons of methoxide in? The tank I had for my 340L processor aint gonna cut it now...  I guess I could mix all the caustic into a full methanol drum and then just pump the remainder in from a new drum... I know where I can get an air powered drum mixer made to go through a bung hole for $200.00 cash... Murphy's pump does look sweet but I am trying to find a deal on a used large open impeller mag drive pump. If that doesn't happen by the time I need it I might have to give Murphy a visit... Thanks, Jon |
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After talking with fellow cajun from BR, I'm convinced that the used Propane tank is a great ideal. I'll enjoy following this thread and learning. 500 gal is a bit big for me, but I'd like to get at least a 120 or maybe a 250. I'm definitely going witht the Murphy pump. Sounds like the last one needed for years and I'd like the peace of mind that it is meant to run continuously.
Is mixing only still acceptable for large tanks, or is paddle mixers better? |
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Member |
So long as you "turn the tank over" fast enough, i.e. high enough liters per minute through your pump, and you run the reaction long enough, pump mixing is fine, and a lot less complicated than paddle mixing. That would work too, and might have shorter reaction time. How much are you willing to spend to get a good gas tight seal on a rotating shaft, that is also rated for the chemicals we deal with?
Please carry on, troy |
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Thats the problem, there does not seem to be any options for a vacuum rated pump with mechanical seals. It seems that mag drive is the only option unless you go to an externally lubricated seal but they have there own installation challenges for our purpose. There are a ton of affordable mag drives made from polymer but I refuse to go with anything other then cast or steel. I found a great deal on some all cast Teflon lined mag pumps at a surplus for $300.00 but they were 3" in and out and I would have needed a 10Hp motor for em...  I am sure something will pop up... Funny thing is the cheap little SST. pressed pump with viton seals I am using on my rig now is holding up great with over 2000 litres through it with no issues. I am sure Murphys would hold up the same as it also has viton seals but I would like to get a pump I wont have to service for several years to come... Jon |
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I have an 85 gallon cone bottom poly tank from US Plastics I mix my meth in, I have built two 200 gallon rwactors in the past with prop mixing they both had two shafts with two props on each shaft, they had a gear reducer so the prop speed was about 300 rpm, the mixing was absolutely phenomenal, but, believe it or not pump mixing foes a better job as far as reaction time is concerned, that is, as long as you have a high volume pump, as in turning your volume over once every two minutes or so.
On both I used double viton shaft seals and it worked great, as far as I know they are still both making lots of bio, one in Florida and one in Arkansas. |
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Yhe pump I have is made by Webb pump company, it has no problem with vacuum. |
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My bad, my pump is made by Scot pumps, http://www.dultmeier.com/catpages.asp?page=E0227 It's the 1 1/2x 1 1/2 1.4 specific gravity, I got the pump omly and put a 2hp motor on it.
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Fab, how do you know if a pump like that will fit on your motor? To what degree will any motor fit on any pump? The pump you bought is the LFE251?
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Not exactly, that number is a pump motor combo, I only bought the pump itself, for the most part if you want to close couple/direct drive a pump you will need a Cface type motor, I usually use 56C this means there is no mounting bracket on the motor the motor has the mounting machined right on the front face of the motor, then you need the matching flange on the pump, the shaft sizes also need to be the same, on a C56 the motor has a threaded shaft the threads into the impeller of a C56 compatible pump, then there will be four holes in the pump that bolts pass through into threaded holes in the motor.
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Thanks!
How long has your new pump been in service now? I am thinking any cast or steel open impeller pump with robust viton seals will last along time when used under vacuum for bio demething, based on my experience with the cheap one I have now anyways. The B&G pump I had was terrible under vacuum but it also had a $hity buna rubber seal. A mag drive pump should remove any concern... Its all about the $$ though  How is your boiler plumbed into the main pump? Teed into the main line with valves to throttle it or is it part of the main loop with all the bio running through it? What was you reason for eliminating the separate pump for the boiler and do you recommend using just one pump for the whole setup? You can tell me to BEAT IT! any time when you get sick of answering my never ending questions eh fabricator!  Cheers! Jon |
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Here are some pics you posted of your paddle mixed processor awhile ago for those interested.
http://biodiesel.infopop.cc/ev...05551/m/87810691/p/1 |
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All good stuff!
Thanks man!
hey thats a compliment! Thanks!Look at the bright side at least you wont have to babysit me and I cant F up your coffee order Cheers, Jon |
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OK things are slowly progressing...
I got my pump and today I scored 4, 6' X 3.5" X 1/4" angles for the legs. I would like to put leveller feet (bolts) on the bottom of the legs so I can plumb up the tank before production, I am thinking 1/4" or 3/8" steel plate with a 5/8" nut welded on top will work perfect to accommodate the levelling bolts. What do you pros think, is that going to be heavy enough? What do you guys figure the tank (500 gallon) weighs empty? Thanks, Jon |
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member 2009 Sponsor |
According to this site http://www.propane101.com/propanetankdimensions.htm a 500 gallon tank is 950lbs empty. |
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