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Well that's never happened before!!
09-02-2020, 05:49 PM (This post was last modified: 09-02-2020 06:49 PM by NigelB.)
Post: #1
Well that's never happened before!!
Today, after nearly 13 years making bio, I managed to make my first jelly batch. FFS!!!
It was first stage sampling that drew my eye to a problem. The jug sample looked just like the oil that went in and then started to jellyfy. I followed the advice that I've posted for years when you have problems. Take a jug sample...fix it in the jug and then scale it up for the batch size.

I think the problem for me was an overdose of NaOH. I reckon the scales were showing incorrectly.

I tried a fix with some old glyc...that didn't work. So I added a bit of methanol and saw immediate improvements including seperation.

I added just over 6lts of methanol to my 160lts of oil and the whole lot has been rescued.

When I did a 10/90 it showed 0.75% unreacted...it should have been closer to 2.5%

Result!!!!!

Location:
Leicester....aka ASM Central!

54 plate Passat (AWX)..PD..B100
09 plate Polo TDI (BNM)..PD..B100
Mercedes Benz 230SLK (PPPPPPPetrol) SOLD
W plate Golf SDI........B100 (sold)
Ford Mondeo 2.0 TDCI...SOLD
VW Passat (AFN)....SOLD
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09-02-2020, 07:26 PM
Post: #2
RE: Well that's never happened before!!
Nice one, Nige.

Few years back I had a brew episode that pointed to the electronic scales, so I ditched them and reverted to mechanical kitchen scales.

Location: N.E. London.
'83 Mercedes S123 240Td.
'98 Mercedes S202 C250Td.
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09-02-2020, 10:13 PM
Post: #3
RE: Well that's never happened before!!
See Nige, the oid chemistry is there round the corner just waiting to grab you by the balls.

Location York.
Enhanced Glycerol pre-wash, then 1 more stage (usually)
De-meth, water wash and dry to <200ppm.
2x 2.0 HDI's both on B100.
2x ransomes mowers both on B100.
FOC Water testing by S/B or KF for forum members.
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09-02-2020, 10:32 PM
Post: #4
RE: Well that's never happened before!!
Tell me. Trust is placed in equipment and techniques. For sure...one will let you down at some point.

Location:
Leicester....aka ASM Central!

54 plate Passat (AWX)..PD..B100
09 plate Polo TDI (BNM)..PD..B100
Mercedes Benz 230SLK (PPPPPPPetrol) SOLD
W plate Golf SDI........B100 (sold)
Ford Mondeo 2.0 TDCI...SOLD
VW Passat (AFN)....SOLD
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