Tan emulsion while cf ing?

Collecting, filtering and dewatering of WVO SVO vegetable oil. For Biodiesel producers too.

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Tan emulsion while cf ing?

Postby gary » Mon Jun 22, 2009 12:01 pm

I settle my vo for a few weeks before I cf and try not to let any of the settleled water or other junk get into my cf barrel when I decant. Well this time I sucked out of a settled barrel and sucked some of the bottom white stuff...water I suppose but as Im cf ing for 3 hrs now at 160f and 90psi my oil still is that tan emulsion color and no signs of clearing. Any info?
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Postby SunWizard » Mon Jun 22, 2009 5:47 pm

Yes you probably got a large amount of water mixed in and the best way to remove is let it settle again for at least a day, then be more careful when pumping. A hot pan test on it will quickly let you know just how much water you have.
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no settleing yet

Postby gary » Tue Jun 23, 2009 10:07 am

I went an extra hr...then went through the polishing filter and into the cubbies. 24 hrs later and still no sign of setteling...still the color of coffee with milk. When I opened my cf for cleaning a glob of airy whiteish grease came out?? It had darker debre on the outside but when you put a stick into it it is white grease.
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Postby SunWizard » Tue Jun 23, 2009 10:11 am

That sounds like fat or PHO, same solution, you need to settle to get it out. It could be fat mixed with water. Again the HPT is the easy way to tell.

Most fat/PHO will become clear at 120-160F and burns fine if your 2 tank rig gets hot enough. You can also try heat to 120F and settle in a well insulated barrel which is faster than settling at colder temps.
YVORMV - Your veg. oil results may vary.
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Tan emulsion?

Postby gary » Mon Jul 06, 2009 7:40 am

After two weeks the color has not changed. As long as it passes the hpt and I have a well heated system it is safe to burn? I have never used hydrogenated oil...my oil has always been clear.
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dump it?

Postby gary » Mon Jul 06, 2009 7:54 am

It failed the hpt...thew first time Iv seen big bubbles.

I do not have a barrel to slow heat...just my cf rig and I already invested alot of time and energy into this 45 gallon batch so since the color has not changed after two weeks should I dump it?
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Postby coachgeo » Mon Jul 06, 2009 8:48 am

one last try if you want. Add salt. some say brine salt? I really dont know the difference. Anyway the salt should mix with the water increasing its weight significantly and make it settle out better.
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Postby SunWizard » Mon Jul 06, 2009 9:22 am

Or just leave it settle for a long time. Sometimes a mistwash helps.
YVORMV - Your veg. oil results may vary.
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emulsified?

Postby gary » Thu Jul 09, 2009 10:10 am

I let it sit in the hot sun for several days in cubbies 3/4 full...droplets of water developed on the inside top of them but no color change or sign of settling....crazy I thought the heat would make the water settle and the oil to rise...should i dump it all?
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Postby SunWizard » Thu Jul 09, 2009 11:25 am

I would leave it settle a long time. Not in sunlight since that creates polymers.
Last edited by SunWizard on Thu Sep 23, 2010 8:37 pm, edited 1 time in total.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
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tan emulsion re-run

Postby gary » Thu Aug 20, 2009 10:01 pm

I decanted each of the 9 cubies of this tan emulsion yesterday...left about 1 quart in each...stopped when I saw white..re cf'd and sure enough it worked...looks like oil again and it passed the hpt.
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Postby carybrief » Sat Aug 22, 2009 8:43 pm

SunWizard wrote:I would leave it settle a long time. Not in sunlight since that creates polymerization.


How do you know if there are "polymers" created in your oil. My oil has been in cubbies outside - but covered most of the time (except if a wind blows the tarps away) what does this do to the oil?
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Postby SunWizard » Sun Aug 23, 2009 10:00 am

carybrief wrote:How do you know if there are "poly" created in your oil. My oil has been in cubbies outside - but covered most of the time (except if a wind blows the tarps away) what does this do to the oil?

See the Polymerization thread.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
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