Re: washing with heat
Thanks for the great info Wesley, But I wont be pulling a vacuum on it as the vessel is way to hard to seal.
I have an abundance of electrical power courtesy of my solar installation so I think I will just boil it off.
I started a little experiment yesterday but I got interrupted, so I will have to start again.
here is what I noticed in yesterday's incomplete test:
1Kg of Bio in a saucepan on BBQ
initially it was cloudy after coming out of pump (had to prime pump so it still had some air in it when I pushed it through - hence the cloudy nature), but clarified quite quickly over heat. To be expected.
Then at bang on 65 degrees the most minute bubbles I have ever seen started to appear. They obviously increased with increase in temp (as per what you said about being mixed with higher boiling point substances).
Interestingly once over 100 degrees, there was visible vapour coming off the bio, and teh bubbles started to coalesce and increase in size with a soap like reflective sheen to them. I can only put this down to the water that is created in the brew mixing with the present residual soap. now there certainly wasnt a lot, just a few here and there on the surface.
glycerine started to drop out really quickly. I didnt measure it in any way, but there was a considerable portion of teh bottom of teh saucepan covered in glycerine within about 20 mins of being on heat.
I let my glycerine settle out of the brew for a week in the mixer before i transfer my fuel to my storage tanks, and then after it comes out of my storage tanks it goes through a glycerine trap I made, then through my golden rod filter. I can honestly say that the glycerine that settled out was not already separated from the bio when I put it in the saucepan.
I probably wont find time this weekend to do it properly, but I will post results when I get them done.
Thanks for the great info Wesley, But I wont be pulling a vacuum on it as the vessel is way to hard to seal.
I have an abundance of electrical power courtesy of my solar installation so I think I will just boil it off.
I started a little experiment yesterday but I got interrupted, so I will have to start again.
here is what I noticed in yesterday's incomplete test:
1Kg of Bio in a saucepan on BBQ
initially it was cloudy after coming out of pump (had to prime pump so it still had some air in it when I pushed it through - hence the cloudy nature), but clarified quite quickly over heat. To be expected.
Then at bang on 65 degrees the most minute bubbles I have ever seen started to appear. They obviously increased with increase in temp (as per what you said about being mixed with higher boiling point substances).
Interestingly once over 100 degrees, there was visible vapour coming off the bio, and teh bubbles started to coalesce and increase in size with a soap like reflective sheen to them. I can only put this down to the water that is created in the brew mixing with the present residual soap. now there certainly wasnt a lot, just a few here and there on the surface.
glycerine started to drop out really quickly. I didnt measure it in any way, but there was a considerable portion of teh bottom of teh saucepan covered in glycerine within about 20 mins of being on heat.
I let my glycerine settle out of the brew for a week in the mixer before i transfer my fuel to my storage tanks, and then after it comes out of my storage tanks it goes through a glycerine trap I made, then through my golden rod filter. I can honestly say that the glycerine that settled out was not already separated from the bio when I put it in the saucepan.
I probably wont find time this weekend to do it properly, but I will post results when I get them done.
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