Who said you need crazy chillers, or anything like that to max out your recovery? I would recommend “a Big Boy Condenser” to expedite your recovery! Here’s 1 example: Big boy condenser - #20 by FicklePickle, and another: Big boy condenser - #28 by Soxhlet. I’m not sure of the recovery rates for the first 1, because as he says he couldn’t hardly keep it fed with vapor. The second, they were getting in the neighborhood of 18 pounds per minute using straight N-tane.
I do like the idea of using 2 solvent tanks for recovery though! Vapor going into the first 1 pushes the condensed LPG through the diptube into the second tank… And even at 1 pound per minute, that’s still respectable and better than more than a few recovery pumps!
Welcome back! Seeing as how it’s been 2 years since your last post!