Andrew,
I am familiar with the soft drink tanks you refer to. I use them as
"kegs" for my homebrewed beer. There are two fittings on top. One is for
adding CO2. The other leads, through a tube, to the bottom of the tank.
This one is for dispensing the liquid. There is a fairly large, clamp down
opening (round or oval) w. an O-ring on top. These tanks are designed to
withstand pressure and are stainless steel. The two fittings on top are a
bit different in order to discourage mixing them up ---- > accidental
dispensing (could be a bad mistake if used for mixing methoxide).
See Chuck Ranum's biodiesel processor at the JTF site. He uses a
version of the tank you are referring to to mix methoxide.
I was looking at using one a year ago and got sidetracked. I think I
was hesitant about pressurizing the methoxide in order to get it to flow
into the reactor. Thanks for reminding me. I may be ready to re-think the
idea.
Tom
----- Original Message -----
From: "Andrew Lowe" <[EMAIL PROTECTED]>
To: <biofuel@sustainablelists.org>
Sent: Monday, November 06, 2006 10:48 PM
Subject: Re: [Biofuel] Refrig. Compressor as a Vacuum Pump
> Chris Tan wrote:
>> Yes it will. Just make sure that your vacuum tank can take it. I made one
>> a
>> month ago and I crumpled a 12gal guage16 stainless steel tank=) But it
>> was a
>> lot of fun doing it.
> >
>> Best,
>>
>> Chris
>> _____
>>
>> From: [EMAIL PROTECTED]
>> [mailto:[EMAIL PROTECTED] On Behalf Of Thomas Kelly
>> Sent: Monday, November 06, 2006 8:45 AM
>> To: biofuel
>> Subject: [Biofuel] Refrig. Compressor as a Vacuum Pump
>>
>> A couple of months ago a post suggested using a refrigerator
>> compressor
>> as a vacuum pump. I just accidentally destroyed the refrigerator that I
>> had
>> been using for my "kegs" of homebrewed beer. The compressor still works.
>>
>> Will it work as a vacuum pump on my processor?
>>
>>
>> Tom
> [snip]
>
> Whilst we're talking about refrig compressors, I scored a air
> conditioner, the type that hang out of the window, the other morning
> whilst out walking the dog. My initial thought was to use the heat
> exchanger, the thing with all the fins, in the methanol recovery as my
> condenser and then I thought about the compressor - I would assume that
> the compressor in an air con would be basically the same as a
> refrigerator? Then I also thought that there is also a fan in there
> which is driven by an electric motor - this could become my stirrer for
> the methoxide. Anyone see any problems with this train of thought?
>
> The other thing that I noticed recently is the 10-20l
> drums/tanks/canisters that are used to hold the soft-drink syrup that
> bars use, we call it "post mix" in Australia, which is then mixed and
> dispensed via taps or a hose arrangement. From my memories back when I
> used to do cellars in pubs, these canisters have an inlet for CO2,
> terminating just inside the top, an outlet for the syrup which goes
> right to the bottom of the canister and also a small access "port" on
> the top that can be opened. I have a feeling this would make a perfect
> methoxide mixer, in conjunction with a pump and also a methanol trap, a
> separate canister that is, for the methanol recovery stage. Anyone had a
> look at these or any thoughts?
>
> Regards,
> Andrew
>
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