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Magnesol removal
Paul from Albuquerque BioDiesel Project has sent use some initial results of using the centrifuge to remove Magnesol from biodiesel. He writes:
We have the centrifuge up and running, and have made an initial run through it
with a 4.6 litre batch of fuel that has been "washed" with Magnesol at 60 Deg
C. This resulted in 4 liters of filtered fuel, and .6 litres of waste from the
bowl. I mix the fuel with Magnesol at 60 Deg C for about 30 minutes and I
believe that it must remain at this temperature as it enters the centrifuge
bowl. We intend to gravity feed directly from the wash tank, and are thinking
something like a 5 gallon per hour flow rate will be sufficient, but will
adjust by experimenting as time goes on. The rate for this test was probably
about 3 GPH.
The refinery is not finished just yet, and I will need to run a few 40 gallon
batches through before I can pronounce it successful, but the preliminary
results with this test batch are very encouraging visually. We need to perform
quality testing on the fuel itself, but it appears as if the Magnesol powder has
been effectively filtered out. I will send you another photo after a week or so
of settling. That is usually a pretty good indication as to the effectiveness
of the filtering.
We have experienced some initial dissatisfaction with our engineering, and will
need to back up and redesign our catch basins, but the machine is awesome and
we are very happy with it.
See attached for results. The before picture is the fuel at 60 Deg C just after
finishing the Magnesol wash, and the after is, of course, the filtered fuel out
of the centrifuge.
UPDATE: 2008-02-03 Paul wrote:
Here are a couple of photos of the Magnesol washed fuel after it has settled for
two weeks at room temperature. Because of the way we fed the fuel into the
centrifuge, the first liter was pretty close to 60C when it went into the
machine, however the second liter had cooled to about room temperature by the
time we filtered it. You can see a distinct difference in clarity between the
samples in the photos. Definitely filter at 60C. The bottom of the jars look
a bit cloudy but it is just an artifact of the camera angle. The 60C sample is
crystal clear throughout. Very cool.
We tried the machine on some incoming WVO, filtering at about 3 gallons per hour
(probably too slow). The filtered oil looks really good, but I think we are
going to do a gross filter first, because the particles tended to clog the feed
tube into the centrifuge. Afterwards we performed the hot skillet water test.
The filtered waste oil just spread out on the bottom of the skillet whereas the
unfiltered oil popped and spattered all over. Of course, we must do proper
testing of the water content to be scientific, but once again, very cool. It
pleases me when a manufacturer's claims hold up during product use.
I will continue to keep you apprised of our progress. The refinery is getting
closer every day but we, sometimes, appear to getting slower.
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Centrifuge during removal of magnasol from biodiesel.
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Once the machine is stopped you can see the magnasol that the centrifuge has removed.
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Biodiesel prior to being centrifuged.
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Biodiesel after being centrifuged.
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Biodiesel processed at 60c after being settled for two weeks.
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Biodiesel processed at 25c and settled for two weeks. Processing at 60c clearly produced better results.
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