Re: [PSUBS-MAILIST] Re: Monoethanolamine (scrubber)

["Eliezer Rodriguez" <eliezer_rodriguez@hotmail.com>]

How about using the thermite idea as part of the system? Heat will be the 
least problem compared with obtaining MEA and other design related problems 
that are arised by the use of thermite(nasty stuff). I have seen thermite 
pass through a car engine like butter and I'm sure anyone will be very 
unhappy if this happens to their subs hull specially at 1000 feet.

Eliezer
"The only thing to fear in life is fear itself"


>From: "Rob Carlson" <rob.carlson@verizon.net>
>Reply-To: personal_submersibles@psubs.org
>To: <personal_submersibles@psubs.org>
>Subject: Re: [PSUBS-MAILIST] Re: Monoethanolamine (scrubber)
>Date: Thu, 8 Mar 2001 19:35:22 -0800
>
>MEA is used by the US Navy for the scrubbers.  Since military submarines 
>are
>nuclear powered the power to supply the heating part is easy to come by - a
>little more challenging on a PSUB where battery power is at a premium.
>
>- Rob
>
>----- Original Message -----
>From: "Nathanael Henderson" <jude@pconline.com>
>To: <personal_submersibles@psubs.org>
>Sent: Thursday, March 08, 2001 1:31 PM
>Subject: [PSUBS-MAILIST] Re: Monoethanolamine (scrubber)
>
>
> >
> > On Thu, 8 Mar 2001, Eliezer Rodriguez wrote:
> >
> > > I was investigating about the different co2 absorbers available, when 
>my
> > > cousin who used to be in the navy told me that on submarines, CO2 is
>removed
> > > with a chemical scrubber, called monoethanolamine(MEA). MEA is 
>supplied
>in
> > > liquid form, although it may be a solid dissolved in water. When cold,
>MEA
> > > takes in CO2, when heated, MEA gives up the CO2. Once used the CO2 is
>pumped
> > > overboard. Does anyone has heard about this process?
> >
> >      Interesting....   Quick check with a lab company gives a price of
> > $370 for 18 liters, quite a bit more per liter for smaller ammounts.  
>The
> > catalog says 'restricted'...I assume that means it's considered 
>hazardous
> > materials for shipping, etc. This could be a very interesting item for
> > long-term submersion vessels (or even just to save a little bit of money
> > on consumeables for heavily used subs.)    The catch is the stuff looks
> > like it's a little unpleasent to work with...MSDS describes it as having
> > an ammonia like smell, and being a strong corrosive.   A liquid scrubber
> > system would be more difficult to build and maintain as well, but the 
>idea
> > of a scrubber you can just throw in the oven to regenerate has it's
> > appeal.  :-)
> >
> >
> >
> > 'Than  (Advocate of bad ideas.)
> > Surf the probability curve.
> >
>

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