Todd
Thank you for responding to my question re: pump washing.
Your answer has raised more questions.
I wanted to know if a milky wash after 7 washings indicated an
incomplete reaction. You replied:
"Possibly. It could also indicate that your churning pump impeller is
manufacturing butter."
This "butter" .... water soluble substance(s) produced by the churning
pump ..... not actually an original contaminant in the biodiesel I'm
washing???
I will stir wash the biodiesel ...... should get desired result, no?
You went on to say:
"Washes don't need the vigorous mixing that pumps generate. Compound a
churning pump with long wash periods and an incomplete or even vaguely
incomplete reaction and you have a problem looking for disaster."
I got the idea for pump washing at the journey to forever website, and
it was attributed to you.
From: Stir washing
http://journeytoforever.org/biodiesel_bubblewash.html#stir
Is it simply overkill to use pump washing on a 15L batch? Might it work
better on 150L batch? Use a diff. pump?
Pump washing appeals to me:
1. saves time
2. minimizes oxidation
3. closed system ... not messy
4. exposes faulty reaction
5. I have an extra pump and an extra water heater
Your time and thoughts are appreciated
Tom
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