Well I can’t find a reputable shop to make my piece and I don’t have the time to commit to making it happen… I’m on the skirts of leaving the state of Oklahoma. But I’ll go ahead and put the drawings on here for everyone to see and maybe you can build something to replicate it.
I will say through R&D, you will have to have a lid on your collection column that has a minimum of 3” dip tube on the incoming solution. Otherwise, The vac created from the recovery port will pull the solution through due to the solution being nearly at boiling state when it hits your collection column. (Don’t end up with a lot of your solute in your Sieve column!)
I would maintain a 15-20psi pressure to push the solution through the cross-flow heat exchanger going to the collection. Use a valve to be able to “throttle” the flow coming into your collection column.
To be cheap, I would just use a standard cooling coil lid (like the ones found in solvent tanks {$3-400}), change the middle port of the lid to a larger diameter fitting for better recovery flow. So you would run cold solvent from your expansion, CRC, or material columns, through that coil going into the collection column with the 3” dip tube I’ve mentioned earlier. Then after the boil off, run the recovery path through you’re Sieve and then through the middle top port that you made larger diameter. By the time it crosses (cross-flow) through that heat exchanger, it will already be mostly condensed…. Finish off with a Exergy 1/2” x 1” tube n tube heat X to make sure the minuscule amount of vapors are all condense and at near chiller temp heading back into your solvent tank.
Again, not much of any chiller power is used for recovery. Mostly just a back-up in case you put too much too quickly into your collection column with no more solvent flowing through the coil.
Good luck 