no you havn't

neutral
I may not have given enough info, but can you expand on "no you havn't".

what I meant was that because you titrated, and calculated the amount of NaOH from that, you had taken into account all sources of acid, both FFA and the sulphuric. Whether you calculated correctly is another matter. Tickell would have used 3.5 + 5 = 8.5. I would have used 5 + 5 = 10. There is debate about that. If you are going to wash the fuel then you will want a good conversion to minimize emulsions. If you are going to use the fuel unwashed this doesn't matter and skimping the NaOH may be OK. Even then I would rather skimp the methanol than the NaOH. NaOH is cheap.

This message has been edited. Last edited by: neutral,

Tilly

A couple of months ago I asked you this: "You said in the other page that you agree that the glycerine settles very differently in appearance and speed in a Foolproof reaction compared with base-only.

How about the comparison of settling between a base-only reaction and a properly done acid/base?

How about yield comparison between all three methods? "

Since then you gave a detailed description of a foolproof batch settling, (not well), but have not given a comparison of a good acid/base and base only settling. I always find they look different, with single stage settling faster and from the bottom up, while acid/base settles from the top down and the lower layer never seems to quite give up all of the esters, as the upper portion seems a bit lighter in colour than the rest. Any further observations?

Now Ive got all the kit, and work in a BD cooperative--, and will soon have the time to experiment, with lots of very evil oils. Im gonna try /Kac/Foolish/foolproof/Acid/Base/Addison and the other MM methods and see what I can do with the Acid/base/craploa style high/low. yield cream cheese/mayo. methods.--(Think Ive covered all the names here.....!)

Ill run the main reactor on the usual single base reaction which seems to work out quite well, but if I can get to grips with the TwoStage, I plan a smaller reactor for the first stage to deal with the very evil stuff.

How do you guys think, a mixture of oils , say, 1000 litres of fairly low FFA, mixed with 500 liters First Stage (acid) Esterified oils, would work out mixed , Titrated, and Transesterified, in the main pot?

(looking for a way to deal with some really awfull fatty high FFA stuff, Ive got in a couple of IBC's!)

H.C.II At, Going where few Veg-Oilers have gone before, Divn, SWC.

www.doctordiesel.co.uk