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New Oil Titrates high, best way to process?

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Old 08-28-2008, 08:33 PM
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New Oil Titrates high, best way to process?

The source of oil that we have titrates @ between 8.5 - 9.5 g/liter. Do you guys have a recommendation on the best way to process oil this acidic? thanks.
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Old 08-28-2008, 11:13 PM
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what kind of lye are you using?
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Old 08-29-2008, 01:44 AM
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Use 22% methanol by volume ratio instead of 20% and process it like normal, your yield will be about 85%. The only other thing you can try is blend it with a lower titrating oil or add some glycol from a previous batch to bring the titration numbers down.
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Old 08-29-2008, 10:52 AM
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i wouldn't be worried if you are using NaOH. That is where a lot of oil I use titrates.

I use 25% methanol and process for ~ 90 minutes. always passes the 3/27 test.
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Old 08-29-2008, 01:12 PM
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We are using KOH. We are also looking @ mixing with less acidic oils, but right now this is the only source that we have. Never thought about adding glycerol from a previous batch, might be something to look at. We were thinking of using 22% methanol also.

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i wouldn't be worried if you are using NaOH. That is where a lot of oil I use titrates.

I use 25% methanol and process for ~ 90 minutes. always passes the 3/27 test.
It is reassuring that you are using oil that titrates that high also. The other place that we want to get oil from titrates @ 1.7 mg / ml, but he is locked into a contract until April.

thanks,
Trent
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Old 08-29-2008, 02:40 PM
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Trent, with KOH the base is 8. are you saying you need to add 9 grams to the base?
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Old 08-31-2008, 09:13 PM
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yes, unless we decide to use the acid-base method. This will be the first large batch for us, so I'm not too excited about trying something new, especially where H2SO4 is involved.
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Old 09-01-2008, 12:52 AM
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17 grams/liter is a lot. have you run another titration to be sure?
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Old 09-01-2008, 10:56 AM
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Ran 3. but that's better than the oil that we got from venders in Sturgis, it titrated over 12.
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Old 09-01-2008, 11:07 AM
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are you warming the methanol & oil when you are mixing them together?
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Old 09-01-2008, 08:45 PM
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haven't got that far yet. Just doing titration. reactor has been put together temporarilly, but its permanant home isn't ready yet.
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Old 09-01-2008, 11:40 PM
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i meant during titration.
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Old 09-02-2008, 09:15 AM
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Trent
just for fun re verify your titration KOH solution, just to be sure nothing has been contaminated.
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Old 09-02-2008, 10:05 AM
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I re-ran samples that I had done when I 1st made the solution and familiarizing myself with the process and got the same results, so I think the KOH solution is still good.

Sorry empiretc, the methanol reference made me think you were talking about the actual reaction and not the titration. I have been using Isoprophyl alcohol for titration.
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