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Old 08-12-2018, 01:45 AM #11
Calwax
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i do have a shower end up on my top flood,

i do not have a bottom flood

I always feel like after i fill the system

dump the valve and start recovering that butane in the column just sits there and warms up and drips endlessly.

recovery of about 15 lb of solvent takes like 45 minutes.

i give one or two n2 pushes when recoverys closed then vent that out from the top of the column.

and thats usually when it just starts dripping slowly for forever.

when i restart the recovery
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Old 08-12-2018, 03:02 PM #12
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Originally Posted by Calwax View Post
i do have a shower end up on my top flood,

i do not have a bottom flood

I always feel like after i fill the system

dump the valve and start recovering that butane in the column just sits there and warms up and drips endlessly.

recovery of about 15 lb of solvent takes like 45 minutes.

i give one or two n2 pushes when recoverys closed then vent that out from the top of the column.

and thats usually when it just starts dripping slowly for forever.

when i restart the recovery
Even with a shower head, you need enough flow and volume to deal with a 6" X 24" column, which contains about 1629 cubic inches of material, so for a 3X flood, requires about 35lbs of LPG, as opposed to the 15lbs you are using.

What is your LPG supply line size? A 4" column is a push with a 1/2" supply.

If you don't have bidirectional flooding, I suggest you add it if efficiency is an issue. You physically cannot get the same degree of uniform wetting using just a top flood, unless you have more flow than will pass through the bottom dump valve, or it is closed, so as to fully fill the column from the top.

In that scenario, you also need a vapor vent to allow them to escape and not block the liquid.

It isn't necessary to use an N2 push on a properly designed system, and unless you remove it all, it seriously slows down recovery.

Here is how we successfully operated the WolfWurx Terpenators.

https://www.icmag.com/ic/showthread....ric+terpenator
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Old 08-15-2018, 04:31 AM #13
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1/4 inch lines all the way around probably contributing to the slow recovery.

I feel like the column doesnt freeze up unless i continue to toggle negative pressure from

the recovery port. then, it slowly starts to freeze up.

im gonna get a bottom flood reducer so i can insure the saturation.
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Old 08-15-2018, 02:09 PM #14
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Originally Posted by Calwax View Post
1/4 inch lines all the way around probably contributing to the slow recovery.

I feel like the column doesnt freeze up unless i continue to toggle negative pressure from

the recovery port. then, it slowly starts to freeze up.

im gonna get a bottom flood reducer so i can insure the saturation.

To freeze the column, the LPG must be boiling in the column under vacuum.

What do you mean by toggling negative pressure from the recovery port??
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An age is called Dark not because the light fails to shine, but because people refuse to see it.

Believing is seeing and ignorance is bliss until it bites you in the ass!

Fervor is the weapon of the impotent. The harder the sell, the poorer the product.

Alas, my ignorance abounds; the more I've learned, the less I know that I know..........

Thou shalt seek and respect the opinions of operators, even unto the third helper, for theirs is a wisdom unknown to technicrats.

Wise men learn more from fools, than fools from wise men.

In my dotage I finally discovered that the secret to putting on pants both legs at a time is sitting down.
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Old 08-16-2018, 03:11 AM #15
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If it's dripping very slowly then I shut the recovery

Port on the collection pot to build a negative pressure in the line then reopen recovery
And watch as it pull more lpg thru the column .
If I don't do that I feel like I leave a whole lot in the column
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Old 08-16-2018, 03:22 PM #16
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Originally Posted by Calwax View Post
If it's dripping very slowly then I shut the recovery

Port on the collection pot to build a negative pressure in the line then reopen recovery
And watch as it pull more lpg thru the column .
If I don't do that I feel like I leave a whole lot in the column

Do you have a vent line from the top of your column, to the top of the recovery tank?
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An age is called Dark not because the light fails to shine, but because people refuse to see it.

Believing is seeing and ignorance is bliss until it bites you in the ass!

Fervor is the weapon of the impotent. The harder the sell, the poorer the product.

Alas, my ignorance abounds; the more I've learned, the less I know that I know..........

Thou shalt seek and respect the opinions of operators, even unto the third helper, for theirs is a wisdom unknown to technicrats.

Wise men learn more from fools, than fools from wise men.

In my dotage I finally discovered that the secret to putting on pants both legs at a time is sitting down.
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Old 08-16-2018, 04:03 PM #17
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The only line to the top of the column is my liquid line from the butane storage vessel .

Untill the end of the run when I iso column for recovery . I'll disconnect the recovery line from the collection pot and switch it to the top of the column while I harvest the resins I allow the recovery to get anything left over in the column
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Old 08-16-2018, 09:10 PM #18
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Quote:
Originally Posted by Calwax View Post
The only line to the top of the column is my liquid line from the butane storage vessel .

Untill the end of the run when I iso column for recovery . I'll disconnect the recovery line from the collection pot and switch it to the top of the column while I harvest the resins I allow the recovery to get anything left over in the column

Without a vent line, there is no way for the vapor to escape and allow the the liquid to replace it using gravity. Consider adding one.
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An age is called Dark not because the light fails to shine, but because people refuse to see it.

Believing is seeing and ignorance is bliss until it bites you in the ass!

Fervor is the weapon of the impotent. The harder the sell, the poorer the product.

Alas, my ignorance abounds; the more I've learned, the less I know that I know..........

Thou shalt seek and respect the opinions of operators, even unto the third helper, for theirs is a wisdom unknown to technicrats.

Wise men learn more from fools, than fools from wise men.

In my dotage I finally discovered that the secret to putting on pants both legs at a time is sitting down.
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