Re: mixture question

Probably Jay's Garage in SE.

--
Jeff Brandt
Sun Break Biofuels, LLC
mailto:[email protected]

On 11/29/06, Peter McMinn <[email protected]> wrote:
> Ok, OKAY. We're convinced! Here's another question: We live in SW (Multnomah
> Village), and though I want to particioate in the co-op when we get the car,
> I'd like to know of the closest retailer of B100. Anybody in my area?
>
> Peter
>
>
> On 11/28/06, Jeff Brandt <[email protected]> wrote:
> >
> > I don't see any reason why it would. As far as I know the B20 blend at
> > Carson Oil has always been ULSD and I've heard of no problems.
> >
> > If wax forms at low temps, then I don't see what sulfur would have to
> > do with it. Does anyone know if sulfur contributes to cold flow
> > properties of diesel.
> >
> > Currently under great discussion in the industry is problematic water
> > content in biodiesel after it has left the factory.
> >
> > Biodiesel is actually hydrophobic (repels water) at a stable
> > temperature. Although changing daily temperatures cause thermal
> > expansion and contraction of the fuel. When the fuel contracts it
> > becomes hygroscopic and absorbs very small amounts of water from the
> > atmosphere (up to about 1200 ppm).
> >
> > Normally this isn't much of a problem because of the high turnover
> > rate at most stations. The fuel just doesn't sit around long enough to
> > cause any problems.
> >
> > But as the temperature drops, the water in the fuel will form ice
> > crystals near 32F. These crystals provide sites for nucleation and
> > accelerate the gelling of the fuel. It's my understanding that the
> > long chain fatty acids are the first to bond and will effectively fall
> > out of solution or end up clogging filters.
> >
> > I've heard that some producers are trying to encourage retailers to
> > install decanting breathers on there storage tanks and transport
> > trucks to prevent atmospheric humidity from contributing to this
> > effect.
> >
> > Fuel can supposedly be fixed by heating to high temperatures to break
> > the water <-> fatty acid bond. Then the water can be removed through
> > conventional absorbtion filters. Otherwise a real pain in the ass if
> > you had thousands of gallons.
> >
> > This is my current understanding, if anyone else has a better or more
> > complete understanding of this. Please share your experience.
> >
> > --
> > Jeff Brandt
> > Sun Break Biofuels, LLC
> > mailto:[email protected]
> >
> > On 11/28/06, Brian Jamison <[email protected]> wrote:
> > > Anyone hear of issues mixing the new ULSD with B99?  I haven't been able
> > > to confirm a report that wax may result in cold temperatures.
> > >
> > > -B
> > > --
> > > Brian Jamison
> > > President, Board of Directors
> > > GoBiodiesel Cooperative
> > >
> > > _______________________________________________
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> > > http://lists.gobiodiesel.org/mailman/listinfo/pdx-biodiesel
> > >
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>
>
>
> --
> Outside of a dog, a book is man's best friend.
> Inside of a dog, it's too dark to read.
> G. Marx
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