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Make easy biodiesel in your farm or in the garage.
Self made biodiesel processor out of doors in summer.
It is very safety to Works out of doors with methanol and KOH
Example 500 
litres of raw rape oil in the top tank . 
 
Mix 22% Methanol 110 litres with 4.5 kg 
KOH in a bottle so no lumps in it.
About   6 minuters or more.
Mix methanol and KOH into the 500 litres of raw rape oil from 
TäbyPressen. into the top tank
Stir it in 2 hours with the pump..
Wait 2 days. After already 6 hours you can see the glycerol in the 
bottom.
Now you have glycerol in the bottom and take away the lower tank. 
Change the tank to empty tank
Mix the oil with water 200 litres 
with the pump and 
stir it in half an hour.
Wait 1 day 
Now you have water and soap in the lower tank .
Change the tank to new empty tank. Stir it with the pump the oil with water once more 200 litres.and stir it in half an hour.
Wait 1 day 
now you have water and soap in the lower tank  but not so much soap  as before.
If you wish once more washing.
Wait 1 day.
Take away the lower tank
Now you have a good biodiesel in the top 
tank. Now is the biodiesel very clear you can read a text of news paper
 through the oil . If you store the biodiesel in a month in an open tank the 
methanol and KOH evaporate away.
Test of good biodiesel 
PH         7.00
Density    0.88
Viscosity the same as diesel oil.
To test viscosities in a self made meter from a used 5-56 spray can.
Room temp of oil about +16 to 17 Dg C
1        Take a used  
400 ml 5-56  spray can and saw 
off  the topp.
2        Drill a 2 mm hole in the bottom.
3 Put the spray can over a sheet of glass.
4 Fill 250 ml of Biodiesel in the 5-56 spray can.
        
Usual diesel oil is the same   about 2 
minutes and 7 sec. 
        
Biodiesel it takes 2 
minutes and 7 sec to close the spray can  the same.
        
50/50 raw rape oil / diesel about 2 minutes and 7 sec.
Raw rape oil 
+16DgC about  5 minutes.
 It is 
too  thick to run in an engine.  
 
 Fryer 
oil    +16 Dg C to thick for test.
You can run the diesel engine with many differents way. Test of viscosity:
1    Mix  raw rape-oil/ diesel oil 
50/50 the same viscosity 
as diesel oil.  Test: 2 minutes 7 sec.
    Buy cooking oil in a department 
store  and mix with diesel. or make raw rape oil in a 
    Oilpress:  
http://www.rapsolja.se/type55.htm
2    Warm up raw rape-oil from 
oilpress to +50 to +70 Dg C  
the same viscosity 
as diesel oil with converter 
      Test: 2 minutes 7 sec.  
http://www.rapsolja.se/drive_your_diesel.htm
3    Make Bodiesel from
oilpress in a tank the same 
viscosity as diesel oil 
      Test 2 minutes 7 sec. 
 http://www.rapsolja.se/biodiesel-information-fran-skeppsta-maskin-ab.htm
4    Fryer oil +60 Dg C  
same viscosity as biodiesel, dieseloil, and 50/50 raw oil /diesel oil.
     Test 2 minutes 15 sec.
5 Water approx same viscosity as diesel oil
|  |  | 
| Wash-test with unwashed biodiesel -- left, after a violent 10-second shaking; right, biodiesel and water separated cleanly within minutes. | |
This is the most useful all-round test, and it's very simple: Put 150 ml of 
unwashed biodiesel (settled for 12 hours or more, with the glycerine layer 
removed) in a half-litre glass jar. Add 150 ml of water, screw the lid on tight 
and shake it up and down violently for 10 seconds or more. Then let it settle. 
The biodiesel should separate from the water in half an hour or less, with amber 
biodiesel on top and milky water below. This is quality fuel, a completed 
product with minimal contaminants. Wash it and then use it with confidence.
But if it turns into something that looks like mayonaisse (emulsifies) and won't 
separate, or if it only separates very slowly, with a thick white layer 
sandwiched between water and biodiesel, it's not quality fuel and your process 
needs improvement. Either you've used too much catalyst and made soap (better 
titration), or a poor conversion has left you with mono- and diglycerides (try 
more methanol, better agitation, longer processing time, better temperature 
control), or both.
Whichever, you're headed for washing problems. Super-gentle washing techniques 
might avoid the problems, but you'll still be left with poor-quality fuel laced 
with contaminants that are bad for the engine and the fuel system.
If you have an emulsion any thicker than the normal "paper thin" interface layer 
between oil and water, the batch needs to be retreated. retreat as with virgin 
oil, but using only 10% methanol and the standard 3.5 g of lye per litre of oil.
Even bubble-washing is quite gentle, and it's worth repeating the test with some 
washed fuel -- it should separate from the water cleanly within a few minutes.
See:
Washing
How the process works