more chinese oil with water and gloopy fully converted to bio

[alifreddy]

got it to change now, the cat on my van got blocked so making sure my fuel is fully converted now and not too soapy but it should be able to handle it. the garage replaced the cat with a straight pipe and all my bio gets dry washed and filtered through a 1 micron filter bag and settled for a few days then bubbled with and air stone to get any methanol to evaporate

[julianf]

I stated earlier " have some other black oil I tried using but the bio was still black it splits with water and only a small drop out on 27/3 test.


why are u getting upset

Yes, you were right - i was wrong.

I guess I'm just getting tired of trying to work out what you're asking / saying half the time - it gets draining.

[willbuild]

if the water on your 50/50 test is not clear, then there is  soap in your bio. In the medium to long term when it burns in your engine it leaves traces of ash which will abrade and damage the seats on the exhaust valves and if they dont close snug then you will lose compression. Not cheap to repair.

[willbuild]

so as you said if there was 1ml fall out in your 27/3 test then there was a 33% fall out, which means you have to re-dose with a third of the total amount of catalyst that you used on your first reaction stage in one litre of meth

[julianf]

will,

thats not entirely correct - he's doing titrations, so on his s1, i assume, he would have used base+titration.

at this point, we would assume that the FFAs have been neutralised, so the titration value is not added, just the base value, for unconverted volume.

[Jamesrl]

I guess I'm just getting tired of trying to work out what you're asking / saying half the time - it gets draining.

I'm with you on that one Julian, it's like trying to interpret a Stanley Unwin monologue.

I gave up a little while ago.

[alifreddy]

all I did was add some glyc and it changed after some heating and pumping was very nearly converted

[willbuild]

will,

thats not entirely correct - he's doing titrations, so on his s1, i assume, he would have used base+titration.

at this point, we would assume that the FFAs have been neutralised, so the titration value is not added, just the base value, for unconverted volume.

so would i be right in saying that he should use 33% of the tit value

[julianf]

nope - the titration value is discarded after the first stage.

the reason being that, on stage one, the FFAs (which are the bit that youre measuring with the titration), are neutralised.

this is just one of the three main reactions - the "acid + base <> salt + water" reaction.

anyhow, at the end of stage one, we generally consider that the FFAs have been neutralised, so, at this point, if you were to do another titration, it should be close to zero (as there are no free fatty acids left - or so we assume)

so, at the end of S1, your just looking at the triglycerides, and dealing with them (the transesterification reaction) using your chosen base value.

[willbuild]

so then 33% of base value?

[julianf]

33% of the base value x the volume remaining in the reactor (which may not be the same as the initial volume, at the start of S1)

[alifreddy]

just got a call to collect 40 more litres of the good oil that titrates at 0.5

[willbuild]

33% of the base value x the volume remaining in the reactor (which may not be the same as the initial volume, at the start of S1)

before or after removing the glycerol?

[Head Womble]

As this is the result after using the titrated amount of catalyst there's something fundamentally wrong with your process.

There's many possible reasons for this, wet oil, bad titration fluid, inaccurate calculations, carbonated catalyst, inefficient mixing, the list goes on.
You need to pin down what it is or you'll never produce good bio using single stage reactions, it'll also make excessive soap and give you more problems.

[alifreddy]

this was before I started titrating  thanks for everyone's advise.On cooling the bio has gone thick again and has a small dropout in the 27/3 test so will reheat and add the 150gs of koh to 1 litre of methanol to 40 litres of bio