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Either SS or Olefin (inert plastics) At 12:06 AM 1/14/98 +0100, Atle Aamodt wrote: >I have a coarse SS mesh (for strenght) covered with a thin fine-meshed >alu. plate. ( for small particles) >If I understand you right, I should replace this alu. part.. > >---------------------------------------------------------------------------- > >Atle Aamodt > > > >---------- >> From: Lee C Kresge <nssdiver@ju*.co*> >> To: aaamodt@on*.no* >> Cc: techdiver@aquanaut.com; rebreather@nw*.co* >> Subject: Re: Sodalime and aluminum >> Date: 13. januar 1998 23:54 >> >> Yes, sort of. Soda lime won't react [very quickly] w/ Al until after it >> has reacted w/ CO2 or absorbed H2O. After that, yes, it will react. The >> reaction of the carbonates (lime reacted w/ CO2) would most likely be >> slow enough to be neglected, especially when compared to hydrated or wet >> lime. At temperatures below ~100F, the reaction is very slow, probably >> only enough to tarnish whatever aluminum it is in contact with. BUT, I >> don't know how warm/hot canisters get in use. . . In a short reply from >> Rich Pyle (Anhydrides vs Hydroxides), he stated that the reaction of CO2 >> w/ scrubber was exothermic enough to make the breathing gas >> "uncomfortably warm." Sounds like >= 100F to me. >> >> The reaction of Aluminum foil with a solution of Draino (Sodium >> Hydroxide) is one method of making hydrogen for lab demo's or at home for >> filling balloons. It's also a great way to make a somewhat dangerous >> mess. >> >> I'd at least not use Al in my canister. Look for some stainless steel >> mesh, or plate, and drill lots of little holes in it. That's how >> Dri-rite does it in their drying canisters. >> >> Lee >> >> On Tue, 13 Jan 1998 22:00:22 +0100 "Atle Aamodt" <aaamodt@on*.no*> >> writes: >> >I saw a paper claming sodalime (Calcium hyroxide, alkali hydroxide) >> >and >> >aluminum will react and produce hydrogen. If so, it's rather stupid to >> >use >> >in a RB. >> > >> >Anyone familiar with this ?? >> > >> >I'm hoping to use a thin aluminum mesh in my scrubber canister. >> > >> > >> >>--------------------------------------------------------------------------- >- >> > >> >Atle Aamodt >> > >> > >> > > > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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