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Good day to all,
After splitting the
glycerine coproduct from roughly 1200L of processed WVO, I distilled
approximately 100L of the glycerine/methanol component.
The first drops of
methanol began to fall from the condenser at 145F. As the temp rose to 150F
there was a steady flow of clear liquid from the condenser. Throughout the day I
turned the heat off when the flow was steady and back on when it
slowed.
I filled a 4.5 gal (17.7L)
cubie with clear liquid and started a second one. At this point the temp was
over 160F. I let the still run up to 200F. At this point the second cubie had 4
gallons of clear liquid (and it was now 1AM) giving a total of 8.5 gal. I was
thrilled with the result (and tired). I used the first 4.5 gal (17.7L) to run
one batch, and while that was settling ran a second batch using the second 4 gal
of recovered methanol.
The first batch washed OK,
but was a little slow to separate. It failed the methanol quality
test.
The second batch did not
even pass the wash test.
I have been making consistenly high quality BD for
several months ... thank you JtF and list members. I don't think I made
mistakes in measurement or titration.
My question:
As my distillation temps rose
towards 200F (93C) could I have been including water in my distillate? (The
methanol recovered at lower temps performed better than the methanol recovered
at higher temps.) If so, can I use Zeolite "molecular sieves" in the future to
remove it?
Thanks,
Tom
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