Ok so I’ve recently started switching my runs from flower/trim to dry sift hash & dry ice hash. Now my reasons for doin this is to increase my work load. Now to explain a little of what I’ve tried so far,
I’ve started by using the follow in this order material column with 3 filter plates to make sure none of the material gets thru, to dewax with filter flare with a 10micron screen, to a CRC then to my collection vessel which is at 45-50F on collection then about 80f for recover.
Solvent I’m Running is N-Butane 70%-30% (butane-propane)
The CRC measurements for powders I’m using @Dred_pirate procedures
Now to the tricky part so my very very first run I did was without the CRC with 2lbs of material in my column and I was able to get about 9.5lbs of solvent in my system and it reached roughly 65-70psi. This was with regular dry ice in the dewax sleeve. At the end of the run I yielded roughly 410 grams on the first pull which was amazing don’t get me wrong looked like shit but straight up impressed my yield. Then when I tried to recreate the same things I did for my previous run nothing would give. Pressure never got back to 65-70psi aswell as now my solvent intake won’t go passed 5lbs.
Things I’ve tried-
5 parts acetone to 1 part dry ice in dewax sleeve to drop temp
removing filter plates on material column
checked for leaks
-chilled solvent tank before use
-froze material before use
- froze column before use
Only thing I haven’t tried is warming solvent tank to forces the gases out which I don’t know if it’s a good idea
Only good part so far about it is if the hash is good enough it pulls clear wen u pour and well if I could recreate my first run then yield would too.
Should I try running straight Butane since the boiling point is 30f and there is more condensed liquid passing thru the material?
Warm solvent tank?
Freeze material and column together?
-Glass beads or stabiles steel sponges for buffers between material?
Thanks for the help in advance