Two stage process with no titration

[Rossey]

So you only put 20% meth of the unconverted veg after stage not the remainder if the 20% from the first stage?

Have I been overdosing?

[Jamesrl]

I only use 15% methoxide on both stages, so yes you've been well over dosing.

[Rossey]

Is that 15% of the drop out you on the first stage aswel?

Ie 100litre batch = 15lt of meth for first stage

0.1 drop out = 150ml of meth for second stage?

[willbuild]

Since reading a post on here a couple of months ago about 15.8% methanol used, I have been aiming for around 16 to 17 % total used and have had no problems. i also find that i only get 1 or 2 ltrs of meths on the final  demeth on 100 ltr batches.

[Jamesrl]

Is that 15% of the drop out you on the first stage aswel?

Ie 100litre batch = 15lt of meth for first stage

0.1 drop out = 150ml of meth for second stage?

Yes but I am using ASM so no water is created in the methoxide, if you're using KOH or NaOH go for a little more, say 16 - 17% first stage and 15% second.

[Jamesrl]

Since reading a post on here a couple of months ago about 15.8% methanol used, I have been aiming for around 16 to 17 % total used and have had no problems. i also find that i only get 1 or 2 ltrs of meths on the final  demeth on 100 ltr batches.

If you don't put the methanol in you can't get it out.

As I'm using ASM that is included in the 15% but I still get 3 - 3.5ltr back in reclaimed, mind you I do have a squirrel so demething is very efficient.

My total methanol input is around 14 - 15% including the reclaimed.

[Mickindashed]

I make 90L batches with 11L of methoxide (koh) for stage 1 and 3L for stage 2. I get a nice clear pass on the 10/90 after the second stage and recover about 1L of methanol when demething. The input is 15.5% and the amount consumed in the reaction is 14.4%. I used to use more, but it didn't make the reaction better, it just made demething take longer.

[Jamesrl]

My total Virgin meth per 100ltr batch is 10 - 11%, just love saving money.

[John Galt]

Yes, consistent success using this method and ASM

What is ASM ?

[Jamesrl]

Yes, consistent success using this method and ASM

What is ASM ?

Anhydrous Sodium Methylate, a liquid sodium based catalyst without the presents of water.

We use a 30% sodium solution the remaining volume is 99.9% methanol.

I worked out a very simple formula for its use and it's getting very popular over here.

[Julian]

Yes, consistent success using this method and ASM

What is ASM ?

There's info on the wiki about it here ... http://www.biopowered.co.uk/wiki/Anhydrous_sodium_methylate

and here ... http://www.biopowered.co.uk/wiki/Processing_with_anhydrous_sodium_methylate

[John Galt]

Thanks for the info.  ASM is not an option here.  It's difficult enough getting methanol, and only NaOH is available.

So, to rephrase the question:

Is anyone getting consistent success with the no-titration method using methanol and NaOH as described in the wiki?

[THE-DOLPHIN]

I get very good results using two stage method with koh and dry wash I do use mainly rapeseed oil only ever washed once or twice on my very first batches three years ago run b100 all year in three motors

[Tony]

I get consistent 2 stage results, but I overdose on catalyst as part of my process.  (Source oil need to be very dry for this!)

[Jmg]

My 2 stage results are very consistent

Glyc wash
Stage one
test
Stage 2
pass

Quantities vary in stage 2 depending on how bad the oil was to start (3 out of the last 4 batches have had a 1st stage good enough pass) with but I've never ended up doing a 3rd stage since I started doing a glyc wash. Admittedly I err on the high side with the catalyst in stage 1
Using around 17% meth overall I reckon. I probably should get more accurate measurements but if it ain't broke etc etc