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Supercritical CO2 extraction

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aniracetam:
parts list:

(all brass or stainless steel, except storage tank, and all rated for 3000psi, unless specified)

CO2 storage cylinder
1 10lb aluminum CO2 tank, rated @1800psi
1 CGA-320 cap and stem, with nylon disc (usually included)

3 Swagelok QF-4-S-4PF, quick connect stems, one connects to CGA-320 stem on storage tank, other two connect to needle valves on the sample cylinder

Sample Cylinder
1 Swagelok Whitey 1000CC sample cylinder, with two 1/4" FNPT ends, rated for 1800psi
2 Swagelok 1/4" MNPT needle valves, rated for 6000psi
400mesh SS screen, cut a small piece to stuff in needle valve on sample cylinder outlet

transfer hose assembly
2 Swagelok SS-QF4-B-4PF
2 Swagelok tees 1/4" FNPT
1 3000psi oil-filled pressure gauge, 1/4" MNPT
1 60" stainless steel braided, PTFE-lined hose with 1/4" MNPT ends
2 Swagelok needle valves, 1/4" MNPT, rated for 6000psi, one connects to tee connecting to sample cylinder, facing out..this will be for bleeding backpressure, to disconnect the transfer line
2  1/4" MNPT unions
1  1/4"  hex FNPT union

collection vessel, low pressure

3" x 12" sanitary stainless steel spool
1 3" triclover endcap
1 3" triclover endcap with two 1/4" FNPT inlets, or one with 1/2" (then also get a 1/2" to 1/4" FNPT bushing)
2 3" viton gaskets
2 3" triclover clamps
(connects to collection vessel inlet) 1 Swagelok QF-4-S-4PM
1 1/4" MNPT pressure relief valve, 140 psi

heating assembly
1 silicone heating pad, Omega part# SSHB-1224-720-120
1 PID temp controller, Mypin TA-4, with thermocouple
1 20A relay

note: remember to wrap PTFE tape around all brass-brass/brass-ss/ss-ss connections, 3 rounds. hand tighten connections as much as possible, mark across the connection with a permanent marker, then wrench tighten 1 1/4 turns (for 1/4" NPT connections, as specified by Swagelok).

the nice thing about this sort of setup is its modularity. one could swap out sample cylinders as needed. I also have a 1L Hoke cylinder rated for 5000psi operating pressure.

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