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Searching for Trap to Separate Lube Oil & Ammonia

12/09/2016 12:55 PM

Hi, can someone share any information about any trap which may separate Lube oil and Ammonia? Thanks in advance.

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#1

Re: Searching for Trap to seperate Lube Oil & Ammonia

12/09/2016 1:05 PM

Oil is heavier than liquid ammonia, so (with proper care) the oil can be drained from the bottoms of vessels or other low points in the system.

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#2

Re: Searching for Trap to seperate Lube Oil & Ammonia

12/09/2016 1:17 PM

Use a simple drain pipe at the bottom of the tank (at its lowest point). Fit the pipe with two valves: one simple, and, one which closes automatically, and has to be held open.

To drain the oil open the simple valve then hold the other open 'til all the oil has drained out; release the automatic valve, then, close the simple one.

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#3

Re: Searching for Trap to separate Lube Oil & Ammonia

12/09/2016 1:30 PM

If possible, you or your organization should consider joining IIAR (International Institute of Ammonia Refrigeration). Their publications give designs and guidance. Wilbert Stoecker's Practical Industrial Refrigeration is useful also.

There is more to the full story than the notes Randall and I have given thus far.

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#4

Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 1:54 PM

This is the first post I've seen with no content. Cannot give a good answer without more info.

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#5
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 2:14 PM

Build a better oil trap, and the world will beat a path to your door....

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#11
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 3:23 PM

The good folks at LynDoor Industries are investigating the repurposing of their SAMWICH Device to separate oil and Ammonia.

The Supervelocity Light Compression technologies involved with the commercial success of the SAMWICH Device are, at this time, proving difficult. We need to see if we can get some cash out of this particular cow.

LynDoor SAMWICH Device

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#6
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 2:24 PM

It had content originally:

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#8
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 2:31 PM

And, errrr: you thought you'd better take a screen shot just in case it mysteriously disappeared?????

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#7
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 2:29 PM

I added the text back in. I hope everything is visible on your end now! Thanks Andrew Westman for the screenshot!

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#9
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 2:31 PM

My pleasure.

I had read this post earlier today and so I paged back through my history and found the (cached) page.

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#14
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/10/2016 6:10 AM

Aaah, thanks.

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#12
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 4:42 PM

OK. Looks good now! While I wouldn't think it beyond some of the posters here, I don't think that you CAN leave the content blank (unless it's a glitch in the system).

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#10

Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/09/2016 3:23 PM

* Ammonia is highly soluble in water. Oil isn't.

* One could use the difference in densities, and apply gravitational force to achieve separation, then decant.

* The difference in boiling points may offer a method of separation, using heat.

*one might wash away the oil using a suitable organic solvent.

Without more process details, such as temperatures and pressures, and flowrates, it is difficult to know what else to suggest.

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#13

Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/10/2016 12:12 AM

For the handy, here's a useful patent (1980 priority date) covering a mechanism for that:

https://www.google.com.au/patents/US4280337

For the brave, here's a series of commercial ammonia/oil separators:

http://www.chineserefrigeration.com/3-4-ammonia-oil-separator.html

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#15

Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/10/2016 12:16 PM

Would adding bleach gas it out ? Dangerously of course..

It couldn't be good. just a random thought.

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#18
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Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/16/2016 4:30 AM

I am sure there are worse things that could be added to an ammonia/oil emulsion. Some of them would even separate the container. An ammonia gas leak should also be avoided to prevent a lot of paperwork.

BAB.

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#16

Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/10/2016 10:33 PM

You may be able to get some information in your pursuit by contacting organizations such as ASHRAE and IHACI.

These are professional organizations in the HVAC industries.

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#17

Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/11/2016 1:38 PM

We need more information on the application please. Is this some sort of ammonia compressor?

Are you trying to remove ammonia from the oil or oil from the ammonia?

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#19
In reply to #17

Re: Searching for Trap to Seperate Lube Oil & Ammonia

12/16/2016 5:27 AM

I suspect that it is an ammonia refrigeration plant where the refrigerant (ammonia) comes into contact with the compressor sump oil. I had a system like that on board ship but it used R12 as the refrigerant. One thing about OPs that don't provide much in the way of detail is that it leaves lots of room for imagination.

BAB

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