I recently ran my first live run
Wasn’t weighed, but 3"x18" dw column packed 3/4 full, out of 5 day freezer, dry ice/ iso added
All same cold, n2 for propellant
About 8lbs solvent through
I used to run 10:1 on a continuous flush, but still had residual thca in the biomass. Now I run 8:1 with the last 20% of solvent soaking in a dry ice jacketed column. If you’re concerned about throughput, just add columns to compensate
If the crude extract amount contained in fresh frozen is say 3% of the wet but frozen weight.
Why would we use 7.5 to 10:1 solvent to fresh frozen weight?
The solvent wouldn’t be anywhere near its saturated level.
My thought is rather than using such and excess amount of solvent to run the low yeild of that contained in the FF mass and then having to recover all that solvent.
What are your thoughts on running say the dry equivalent amount of solvent, but just recirculate this lower amount of solvent through the FF for awhile. Could even run an inline heat exchanger to keep the solvent cold throughout the recirculating time so as not allowing it to warm up and melt the FF.
My one experience recirculating solvent at 5:1 yielded less compared to pushing 8:1 without recirculating I think running a bunch of clean solvent over the material is necessary to push all of the oily solution out of the material. I flushed clean solvent over the recirulated run as well but probably wasn’t as much compared to running my normal ratio.
I’m sure tinkering with variables could get better results than I had but it doesn’t seem worth the time for me.