Looking at buying a condensing coil for my solvent tank and would like to know what the pros / cons are if you’ve used one?
Does the outside of the tank still require cooling with an internal coil?
Couldn’t find much on the search bar any info apprecieated, thanks.
Best of both worlds is jacketed with a coil, so if tou want to use the tank to push with tou can bu warming and the coil can chill it, also depends on your chiller size and bow much gas your recovering and how fast
Pros, chills vapor, hopefully into liquid, best used in a dry ice slurry to maximize heat transfer along the length of the tube. If using single pass coil, inlet in the side that winds down with gradual slope, outlet is the leg up from the bottom.
Cons, none. Every hydrocarbon extractor needs at least one heat exchanger between the collection vessel and solvent tank. Type and size determined by solvent blend, speed of recovery desired.
Yes, the solvent tank should still be chilled whether with an internal coil, extenal jacket, or other means, to lower its pressure and send cooler solvent over your material.
@SamuraiSam A little off topic, on a double wrap coil, would I want my inlet on the inner wrap, or outer wrap? I have thought about this a lot, but this is the first comment I have seen referencing anything regarding the appropriate inlet/outlet of a coil.
I use 50ft double wrap coils for injection and recovery.
The reason I do it this way on single pass is that solvent cools gradually as it travels downwards and coldest part of bucket is at the bottom then it exits straight up
On a double wrap coil it shouldn’t matter since it’s taking its sweet time to go up and down
But I put inlet on the outside coil in a big bucket and inside in a small bucket the coil barely fits in
Whichever side has more contact with the cold stuff.
Probably percentages of a percentage here but I’m good at overthinking simple things
I like bottom draining coils so you can use gravity, i have a 50’ 3/8 bottom draining above my tank and below my pumps.
Used a bottom outlet coil in a tube from BHOgart years ago. Worked great. Also have never had an issue with pressure from collection / pump keeping everything flowing
Ya I prefer them no added pressurw from having to go up and down, i also have a valve and then a T so i never empty mt coil and can re vac the system,always felt like i was loosing alot of gas in the big coils.
If anyone is looking for some coils I have 4 stainless immersion coils available:
Thanks for the info guys! I’m having trouble finding a coil attached to a 6" triclamp lid with a diptube anyone have a source?
Best value sells some coils like that nust mot aure of rhe size
We can make one for you at Pinnacle Stainless if you cant find the one you are looking for. hit me up troy@pinnaclestainless.com
Not always. I run dual tanks with a hot coil in one.
I have jacketed tanks and the inlet ports are 1/2" .
I am thinking of adding a tank coil in the equation.
My question is will the coil being 3/8" slow down the flow a considerable amount. I want to think the added internal coil on my 50# tank would be a cooling upgrade. Any opinions or experience here would be helpful.
No it should be fine, are you running passive. I was always running pumps and 3/8 was the best for me as far as speed, i could look in and see a solid 3/8th stream that never stopped. Way back some guys i knew were running 1/2 -3/8-1/2. They swore the gas condensing and then expanding chilled it but i have no first hand experience with that. If your using a 50# the difference probably wouldn’t even be noticed
You’ll face more flow reduction from the continuous need to turn through the coil than the line reduction from 1/2 to 3/8" which will actually increase flow-rate through that portion of your system due to Bernoulli’s principle. Ultimately, you’ll face a pressure reduction at the pump due to the additional distance and turbulence your adding. It’s really just going to come down to whether or not your return pressure to your chiller is going to be sufficient.
This makes sense. I am going to upgrade my heater and then do more time tests. The new shotgun condenser has been a huge improvement in my run times.