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Cold Trap any one have one of these?
- Thread starter ple1ades
- Start date
http://www.horticulturesource.com/z...n-contraption-cryogenic-tumbler-ec101-p12258/
These is what people like to use round here.
These is what people like to use round here.
He's talking about reclaiming solvents that are liquid at atmospheric temperatures.
Chonkski
Member
Not quite sure how well they work, there isn't much surface area on the inside of the chamber.
Can't say I don't want to buy one though! I believe SkyHighler posted this link, and I got really stoked. I just doubt its abilities without the use of a coil to help condense vapor into liquid.
I'm sure some other awesome cheap finds will be coming out the more the market grows
I swear you are following me from thread to thread, think we have the same tastes...
Chonkski
Member
hehehe, I wouldn't disagree brother!
I actually just got back from a week long backpacking trip in the sierras, so I'm just catching up and giving my two cents on all the top forums. I always feel so behind when going away for a while..
Turns out all I missed was this recovery pump thing getting bigger and bigger.. lol
morganic grower
Member
Interesting, going to see how this works out....
A coldfinger stuck in a Dewar (or Thermos) of LN2 might be all you need.
Here's a professional model for the low low price of 1k.
Dry ice / isopropanol cold trap. Provides pre-pump protection by condensing vapors. Vapors contact outside stainless steel shell, traps up to 1.5 l condensate. Large, removable center well accommodates up to 2.8 l of dry ice / IPA slurry for up to 12 hours protection depending upon vapor load.
It might run better just with much shorter hose.
Here's a professional model for the low low price of 1k.
Dry ice / isopropanol cold trap. Provides pre-pump protection by condensing vapors. Vapors contact outside stainless steel shell, traps up to 1.5 l condensate. Large, removable center well accommodates up to 2.8 l of dry ice / IPA slurry for up to 12 hours protection depending upon vapor load.
It might run better just with much shorter hose.
Chonkski
Member
Thank you so much, greatly appreciated! I'm about ready to get one next week, otherwise I am evaporating off and buying so much ethanol.
Couple questions, can I use a rotary vane pump still? If so should I worry about pump oil being in my reclaimed ethanol(gin)? From oil molecules backstreaming? I will throttle the pump to increase contact time and bleed atmosphere slowly to try and help prevent this but I still worry.
Thank you again G.O. Joe
IDK your application, what you're doing, so, IDK anything about anything really. In standard use IDK about this throttling you mention. The only problems I've had with pump oil coming back were solved by loosening the connection at the pump while it was running, before shutting down. You should get a ebay or labx rotavap and distill that ethanol anyways.
This is not a substitute for distillation. If you have a lot of vapor and a puny rotary vane pump that's getting hot because you're only down to 20 mm, you need a diaphragm pump, better solvent stripping, or a bigger pump instead of a better trap, even though the trap will help with lowering pressure.
Chonkski
Member
I winterize all of my bho, then evaporate it off at room temp on ptfe, then purge in an oven into slabs of shatter. I don't need a cold trap for distillation, I need one for reclaim and reuse of my solvent.
Cold trap works great sorry for the slow response time. I have still not ran it to trap to trap ethanol yet just pressure testing right now. The cold trap works great for what it is pressure holds all the way down to -29.5 no problems. I had them make the cold trap with 1/4 flare fittings so I could use a quick release fitting on the pump side for easy emptying of trap.
UNREGISTRD
Active member
Are you using that organic grape ethanol? I swear that stuff takes forever to purge and maybe its just me but i taste it>> Any tips on purging the ethanol..
