You use both coils for recovery and injection? Like in line? Or a coil for each?
3âx12â with 4 filter plates
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In line. Same coils for injection and recovery, just have to move some lines around
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Active?
Passive.
I actually donât use n2 until it hits the crc because I donât have a hot loop and for the most part the 100â of coil and butanes love for the cold does the work for me.
Thatâs why I donât chill my gas tank, I use room temp to start and the butane races towards the coils.
During recovery I donât chill the tank, because the gas is hauling ass out of the collection vessel towards the coils and then into the gas tank. The hot vapor is whatâs doing the work here, I actually have to throttle recovery because of how fast itâs going.
Bigger collection vessel is the next purchase, hopefully it will help not have to throttle it
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You made me realize i vould also run a coil between the crc and collection to chill back down to vent if im unable to vent do to pressures
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Unless the crc process is taking hrs, you shouldnât need one
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If you go this route buy these
The coil fits perfect in a home depot job site cooler
This and some compression fittings and youâre set
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You da man. Hopefully i dont need it
I really donât think you will need it between crc and collection, but itâs your show, do what you like! Haha
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1/4" jic
Make me an offer, Iâll let it go cheap. Some cash plus shipping
Fits in five gallon bucket
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I have 3/8 on everything. Thanks for the offer though
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Iâm having a hard time wrapping my head around using coils and not cooling the recovery tank. Wouldnât the tane want to condense in the coil and stay there since the tank is warmer than the coil? Or does it just get sent over with N2?
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Everything is vacuumed down. And the butane races in and out of the coils⌠all incoming gas is trying to get into the coils⌠so itâs pushing old gas out while the rest is coming in. N2 gets used once the gas gets to the crc
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Iâll be running here soon. Iâll get pics
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that makes sense, the push / pull. Does your recovery tank not gain any positive pressure during recovery even at room temp this way? I plan on getting a coil in the near future so Iâm trying to wrap my head around how to properly use it both ways
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push the butane into the tank with n2 then vent the n2 out the vapor port. the liquid butane will hang out in the solvent tank for next time.
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Since everything going through coils on recovery itâs doing the same exact thing as when I inject. All the incoming gas is cold as fuck and chills the tank. Youâre all gonna love this, I also donât vacuum the tank down. Once recovery starts the left over n2 in the tank needs to get bled out. So thereâs a little bumping of n2 out of the tank at first, then it stays at 0 the whole time
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Butane will forever chase the cold.
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Another huge benefit to me in doing it this way, is that my gas tank sitting directly on the scale telling me exactly whatâs what. Instead of the tank sitting in a slurry of sublimating dry ice which wouldnât give you an accurate reading.
Plus, have you ever tried to balance a gas tank in a trash can on top of a scale⌠it sucks
Most of the energy in the dry ice is used during recovery phase going from 70-80f down to -110f again and during the initial injection of warm solvent. After that, the next injection, the coils donât have to do much.
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