How about a CO2 Capture system?

Found this on CO2 recovery. Beer chemists.
http://www.asbcnet.org/resources/CO2.html

More than half-way down it talks about the steps in CO2 purification. It says there are volatiles in fermentation gasses, and I am assuming these are mostly water soluble? They have a the same type of filter train that OldFart had on his initial runs.

 

Well, it's probably something like 1000-5000psi. Tanks are usually hot filled to 4000psi but cavers have been known to push them to back splitting pressures like 6000. Crazy guys they are.

 

By the way, have you guys realized enough obstacles in this project to throw the towel in or what? I'm all for basement engineering but you do realize for the amount of thought you've put into this, you could have begged for change on the street and taken the profit to have a 20lb tank filled.

 

Too early to call. I put the overs @125 posts.

 

I like working it out in my head and on here. I am probably just going to learn how to refill my own 5# bottle to half-way so it is a little more safe for me, and just refill when needed to serve only. I can then keep my big bottle in my brewery to purge and transfer things as needed. The only way I would actually build anything is if it could be completely self collecting (like a collapsible ducting that grew to the ceiling) and hand operated to pressure fill the 5# tank (like the jack and cylinder I spoke of earlier and the other ideas). Past that, if it were ran off an already bought air compressor I could do that too, but it really isn't worth the hassle just fun to have the hassle to work in my head and on paper. That low back-pressure CO2 regulator really gave me some ideas of use once in the 5#, just how to get in there with enough juice to power through at least a single keg before needing a refill.

 

Somewhat related. I know david_42 recycles the CO2 when he makes seltzer water using street water pressure. Maybe he'll chime in on that.

 

I think the practical usage for collected CO2 is simply purging O2 out of say your secondary or keg. It can easily done by fitting a mylar balloon to a nipple on a capped blowoff vessel. Then you can attach a long dip tube, insert to the bottom of your carboy and squeeze the balloon. This idea of pressuring to 60psi into a tank is just way out there.

 

Wow!! That's wickedly high! That's like strapping rockets on your back. I wonder if the compressors they use for compressing air to those levels are the same ones used for CO2?

 

I doubt it. CO2 needs less than 1000psi to liquify. Here are some USED scuba compressors for only $8500.

http://www.northshorecompressor.com/used-compressors/used-compressors.html

 

OK, I know this probably won't work, but....

 

Hey we think alike. I don't know if you read my post on the green board or not, but I came up with practically the same idea. I swear I didn't see this post first.

 

What about the regulator from an air compressor. I can set the low pressure gage on mine to 10 psi, and it will stay there until the pressure on the high side drops below 10 psi. And the high side pressure never starts over 128 psi.

 

What about this pump? I sincerely doubt it'd actually get anywhere close to 250psi, but if it did, that'd be right where we need it to be...

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=4077

 

I had a 12v "truck" air compressor. Paid around $60 for it. It was rated at 250 psi, but never managed to get past 70. And then the power cord melted. Not the copper, just the insulation.