Hey guys me again, im struggling with flow in my cls .
So I followed the process from the gas cylinder to the material columns, that part runs perfectly, but my problem is from the columns to the collection chamber i get the gas flowing up then it dribbles out a few drops then stops …please help me with this bottle neck . Nitrogen push helps it but then it leaves some gas left in the gas cylinder…
Pressure test and vacuum test done , no leaks at all
The jacketed collection vessel do I start it off cold or heat it up from the start ?
Note this is passive still waiting for my haskel pump to come
You can heat it, but you’ll need to recover while you’re injecting to relieve pressure, or increase N2.
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Can the vapor lock be from opening the material columns separately instead of simultaneously? There is a vacuum on the whole system and i left the heater off while running and still nothing without n2 , last question if my gas is -20 do I still need to dry ice my columns? Fast push
Once the headspace in your collection equalizes with the headspace in your solvent tank, liquid will no longer flow. Media can slow or stop flow as well. To overcome this, you’ll need N2 or a warm vapor loop (less ideal), if recovering to relieve pressure is not enough.
-20°C is pushing it. You can make decent extract with -40, if you move fast. You’ll have noticeably better results if you chill your material columns, though.
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Without N2, OR a pump, the only pressure differential you’ve got is the vacuum you pulled on your collection. If you start with it warm, you loose all of it the moment solvent hits…
Same applies to getting solvent into your column
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Captain Safety Pants here, can we get someone on a call with OP to work this out? There is a giant pipe bomb involved.
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