solvent to material ratio

[pnw bb]

Hello all!

I am using a mkIII as well as a 2.5lb bhogart and just got a 100lb tank of solvent.(n-tane) and am trying to learn how to calculate how much sovent to introduce at a time. My concern is introducing too much liquid at a time and flooding my material column and also filling my collection vessel to the point of liquid going up into my recovery lines. thank you guys so much for any info about how you guys decide to stop.

ps we do have a refrigerant scale.

 

[dopecook]

5 cans = 1 LB (via Bret Maverick)

1 can to 1 oz formula doesn't hold true at high volumes in a closed loop (or in general). I'd say about half that is good when you're doing big runs.

1-1/2" x 24" column on the MKIII?

I'm guessing the BHOgart is 4" x 24" or 36"?

 

[My Name is TANE]

Depends how big your collection pot is. And if you're applying heat to the collection pot as well to boil off the liquid.

 

[Kcar]

5 cans = 1 LB (via Bret Maverick)

1 can to 1 oz formula doesn't hold true at high volumes in a closed loop (or in general). I'd say about half that is good when you're doing big runs.

1-1/2" x 24" column on the MKIII?

I'm guessing the BHOgart is 4" x 24" or 36"?

Bret Maverick is wrong. Butane weighs 4.87lbs per gallon.
There are 3785.4ml in a gallon.
3785.4/4.87 = 777.3ml per pound. 200ml in a can.
777.3/200=3.88 cans = 1lb

But wait! I fuked up.
777.3/300=2.6 cans = 1lb!

 

[RegisPhilburn1]

Kcar is right on,

What grade ntane did you get? I'd suggest doing a cleaning distillation run if it's not research (99.99). Transfer the amount of gas you want to use into a separate tank, so you use an amount that's less volume than your collection pot(10x12 I'm assuming for 2.5 bhogart), so that you can never overfill the bottom in case of a mistake

 

[HighStateToke]

Transfer the amount of gas you want to use into a separate tank, so you use an amount that's less volume than your collection pot(10x12 I'm assuming for 2.5 bhogart), so that you can never overfill the bottom in case of a mistake

For those running 10"x12" lower ends, whats the maximum volume of butane you've been able to run through? Without coming close to aspirating liquid of course. Columns of all sizes, cycles of all varieties.

 

[Terpp]

Check out this column calculator we built a while ago.

There is a .PDF and .XLS spreadsheet you can download. You can modify the packing density on the spreadsheet and it will update the rest of the sheet.

 

[Terpp]

For those running 10"x12" lower ends, whats the maximum volume of butane you've been able to run through? Without coming close to aspirating liquid of course. Columns of all sizes, cycles of all varieties.

Total capaciity of a 10" x 12" spool is: 19.46 Lbs. of Butane (14682 mL. 29.4 cans at 300mL./can).
*Butane = 0.60126 G/mL.

 

[HighStateToke]

If I had any internet tokens left I'd give you every single one and then some, after GW received his share that is..

Thank you very much Terpp.

 

[Kcar]

Total capaciity of a 10" x 12" spool is: 19.46 Lbs. of Butane (14682 mL. 29.4 cans at 300mL./can).
*Butane = 0.60126 G/mL.

I get 12878ml and thats on the OD.
But I'ma little hi!

 

[Terpp]

I get 12878ml and thats on the OD.
But I'ma little hi!

How did you get that with a 10" x 12" spool?

This is what I did:

The ID on just about every TriClamp spool is about 1/4" less then the TC size. So a 10" spool has a ID of 9.75" (4.882" Radius).

3.141*4.882*4.882*12 ≈ 876 cubic inches.

There is about 0.061024 cubic inches per 1ml of fluid (or one cubic-centimeter). So we can divide 876/0.061024 ≈ 14,355 mL.

 

[Kcar]

Sorry, I was using 10 as the height also.
But wouldn't the radius be 4.875? I get 896in3