The pot being at 80 is going to produce vapor pressure preventing your run from passing through the powders and possibly clogging up. I see u intend to create vacumn with a recovery tank in ice? I would recommend nitro over anything but a pump will work too however those are really noisy and more hardware is needed like extra hoses, filters, and coils. I wouldn’t recommend using that pump like in the buchner funnel tek unless its explosion proof. In the buchner funnel u have very little vapor pressure but in the ss loop u will have a lot and that could easily create an explosion
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You dont want to crowd the original thread? 
That thread should be closed and a part 2 should be opened.
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I just use a water aspirator to pull solvent through. No explosion risk and pulls through relatively quick
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Thank you for helping me!!
Catchment pot would only be at 80° to recover solvent after the run.
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Even at room temp it will create a good amount of vapor pressure unless u have dry ice around it. Then u would have to switch to a hot water bath to recover. Thats a lot of work. Why dont u want to use nitrogen?
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When I started using nitrogen I thought it was gonna be harder. I like to think of it like how oil and water mix and they layer up. When I push nitrogen into my column I imagine it pushing the butane down kinda like wringing water out of a wet rag…then just burp it out…eventually youll get a feel for it…just keep an eye on your gauges have one on your column and one on ur pot and start with 50psi that’s worked perfect for me
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Is 5 micron along with celite 545 sufficient enough to stop t5? Cant find 1 micron buna n tri clamp filter/ gasket online anywhere anymore.
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So you don’t charge your tank? Just push through the column? That’s how I’ve been doing it, for me it’s basically a backup Incase I don’t get enough pressure back into my solvent tank for vapor assist. When you vent how do you tell when you’ve stopped venting n2 and aren’t just venting out solvent with it? Or are you keep your collection super cold?
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Only vent n2 when you’re vessel your venting from is at proper temp for the fuel to be liquid, I like my IR to read LO(-70ish)… Then your fuel will be zero psi… Vent the charge to zero
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Yes I chill my solvent tank first, then once I’m ready I use nitro to push through…I noticed my recovery tank will pull the nitro because I wont see any recovery happening even though its empty and on dry ice…as soon as i open my vapor line on the recovery tank it burps out a good amount of pressure and that’s how I know it’s the nitro because my tank was empty and cold so there is no reason why it should hold pressure. Also as soon as I do that recovery begins and the aggressive sound of the vapors coming in confirm the nitro is out and recovery has began. The burp is only about 5 to 15sec long
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Ohhh ok you’re running passive. It seems running nitro assist is more difficult to vent with active recovery
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I have my whole collection on quick connects so I might just run a diy chiller and hook up the chiller to my collection, drop the temps, vent nitro, then plug in my heater quick connects and start recovery. That should work right?
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Yea as long as your butane is cold enough it should be only nitro being burped
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I think I’m gonna set this up today. Just had one last question. Do I have to worry about any sort of thermal shock on my jackets going from 90°f then Having a dry ice slurry run through it a few moments later…
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That’s a good question I noticed my open jacket “move” on one of my tubes when adding hot water to recover the gas in the column…that tube was my first tube ever it’s old and it lost its supports on the top part of the jacket so I’m guessing that’s why it moves and the others dont but it did let me visualize the thermal shock…maybe one of the other guys can answer this
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This is how I do it. Works great. Constant ability to switch from cold to hot on the fly.
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Do you use quick connects? I’m a little worried the qc’s won’t be able to handle a dry ice slurry
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Nope. I actually just swap my pump over from hot to cold and so fourth.
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Well I got it to work super well. Injection was insanely quick at the lowest temps I can get. But after injection there’s still all that solvent left in the column. How do you get the rest through?(sorry for the dumb question) With my active system I use the vapor pressure from the pumps to heat up and push the rest of the solvent down into the collection.
This is how I used to do n2 assist: I’d flood normal at like 15psi then shut it off and push through with nitro to clear the column if vapor assist didn’t get high enough psi to make it through all the crc media.
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I hook up recovery to the top of my column, remove the dry ice and add hot water to the jacket to push the remainder of the solvent into recovery.
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