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What does adding glycerin do to lower titration values?|
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I am a biodiesel newbie, and chemistry was a sore spot in college. With that said, i will share my observations. I have regularly been pre-treating with no less than 20% glycerin. It only costs me time and saves on KOH by lowered titration. My last batch was run with 18% methanol instead of the ususal 20% and it passed the 3/27 with flying colors. When I demeth and settle for 24-48 hours, soap is minimal. I believe that some methanol is cooked out during the mixing process, so I apply about 10 lbs of pressure to my settling tank to reduce this. I say this because I vacum my methoxide and oil through a reaction chamber into the settling tank and I always find some methanol in the air compressor tank. One other person has indicated to me that they pre-treat and they are using 16% methanol regularly. I plan to work my way down to that percentage. And finally, I drywash with Magnesol, but I have found that after de-mething and settling I have fuel that is almost as clear as the drywashed fuel. |
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I just treated 50 gallons of dry WVO with 12-13 gallons of glycerine from my 50gallons I have stored. I mixed with heat for 2 hours and settled over night about 10hours.
I then drained exactly 10 gallons of glycerine, it was thicker still able to pour, but did not smell like methonol at all! I now have 52-53 gallons in the reactor, i'm proceeding with my acid stage using 250ml of acid and 4 gallons of meth Inital titration - 16 After glycerine treatment - 8.5 ( happy !!! ) I'll post to let you know how I did after the acid stage |
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Dear Lauf
Why didn't you treat again with glycerol so you don't have to do acid treatment? It's a hell of a lot easier and safer. |
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Well I have a biopro so it's setup using the acid step then base. I dont understand why so many people say it's not safe? I pump out of my barrel into measureing cup and pour into reactor? easy process! wear gloves and glasses duh!
Okay anyway after I did it I ended up with a layer of white/yellow glop, kinda seemed like water? Hard to say.... My titration did not change |
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What does adding glycerin do to lower titration values?
