Realbax
Well-Known Member
Maybe someone can tell me where I am going wrong here? Recently received a closed loop system. Just a pint sized 180g set up but a safer setup which is what I wanted. I had run a handful of open blast runs up till now and decided that I liked it enough to invest in a better solution. The open blast rig was similar size and the material was from the same batch which was dried and cured then frozen. The new setup gets a vacuum pulled on it and put in the freezer. As its winter I have been storing the butane which I distilled and recovered into a recovery cylinder outside where it remains a liquid. I pack the column but not super tight as i hadn't been able to do so with the other one and didn't want to choke the system. I remove the extractor and once outside I invert the recovery tank once it's all connected purge air from the line and fill the column. Isolate the chamber and set a timer for 10 minutes. First time being able to isolate like this so I have no idea what duration a soak should be. When I release the column into the collection base the pressure rises to roughly 30psi. I let it sit for 5 minutes while I pull a vacuum on the second recovery cylinder. Then use pressure differential and temperature differential to collect the butane for another run. I was shocked to see such a little amount of extract. When I ran the open blast i would average between 10- 15% return. With the new setup maybe 2%? Im not sure but hardly anything. Could someone please tell me where I'm going wrong here?