Just finished ordering everything to set up a new passive system. It will be wall mounted with bi directional flow capabilities and nitrogen assist. Here is a quick run down (does not include all valves, fittings etc):
4” shower head top cap w/ 2x npt ports
Compound gauge
4x48 spool with sleeve
4” Filter plate for stainless precut disc and paper
4” 5 micron sintered disc
4” 1 micron sintered disc
4-1.5 hemispherical Reducer w/ filter plate and paper filter
1.5” 5 micron sintered disc
Tri clamp- 1/2” mnpt adapter
For my collection pot I am using:
10” Hemispherical lid
Dual sight glasses
10”x10” spool
10”x12” bottom pot
Tri clamp- 1/2” mnpt adapter
Compound gauge
I am using a combination of tuff steel, ptfe envelope, and straight ptfe gaskets.
All vessels will have 150 prv’s.
I will be using bvv’s tri Gas blend. 50n/25iso/25prop
My solvent tank will be in plain dry ice during solvent injection and then move into dry ice & acetone during recovery. My sleeve will be filled up with dry ice & 99 iso. Collection pot will be in dry ice & acetone during collection and then Moved to hot water bath during recovery.
I am using 2 food grade barrels (1 medium sized and one large sized) cut in half. The large warm water reservoir will be preheated by 2 1500 watt bucket heaters will on thermostats and 1 submersible pump circulating water. Another pump attached to 1/2” hose will pump warm water to the collection vessels small warm water reservoir. In the small warm water reservoir I have a matched submersible pump attached to a 1/2” hose that pumps the water back to the large warm water reservoir.
My nitrogen tank will be plumbed to one of the vapor ports on my solvent recovery tank and directly to top of the spool. I plan to lightly pressurize headspace of solvent tank to Push chilled solvent to spool and then do a final push post soak (30 min)from the spools nitrogen port.
All parts should be here in the next week and a half. I will post photos as progress is made.
Everything looks good man. I recently quit using acetone in my baths because it’s just to aggressive on the ice. I find that 99.7 iso does the same thing temperature wise, but you’ll go through dry ice much slower
Thanks for the info, that’s the kind of input I’m looking for. I was only planning to use acetone because I had read that it will take the temp slightly lower than the 99.7.
I planned on just using two small submersible pumps that are used for hydroponics, but I bet you are correct when you factor in the lift and all other variables.
I will only heat my spool to recover residual solvent from material. I have a line running from the top of the spool to my recovery tank. Planned to just drain dry ice slurry out of drain port and fill with warm/hot water.