Lean oil absorption
Lean oil absorption
(OP)
Hello,
I can't really find much information on the lean oil absorption process for hydrocarbon processing. I was wondering what would be the reactor conditions for a lean oil absorption unit with desired separation into C1-C3 and C4+ streams? Specifically, the absorption column, ROD and the stripper. Since C4+ is desired, I've chosen my oil solvent to be C12-C13 at ambient temperature. Any help would be appreciated.
I can't really find much information on the lean oil absorption process for hydrocarbon processing. I was wondering what would be the reactor conditions for a lean oil absorption unit with desired separation into C1-C3 and C4+ streams? Specifically, the absorption column, ROD and the stripper. Since C4+ is desired, I've chosen my oil solvent to be C12-C13 at ambient temperature. Any help would be appreciated.





RE: Lean oil absorption
The Campbell Petroleum books "gas conditioning and processing" Volume 2
The last ambient lean oil plant built was probabily 1970. I operated one up to 1983. You will lose lean oil into the gas and into the product screen, we lost about 5000 gallons per month on a 10 MMSCFD stream. You will have to run boilers because you'll need steam stripping. This also means that you will have oil in your water and steam system.
Hire an engineer or a good midstream company (if you need help locating I can give you some ideas in the NY area). They can fix you up with better solutions.
RE: Lean oil absorption
RE: Lean oil absorption
Straight refrigeration (-40)is an option that could be economical. Cryogenic (-150) might be an over kill. A modified lean oil called refrigerated lean oil has some windows of coverage that might work.
If you have large volumes and poor economics and need to make dew point, there is the "quick cycle" option.
This is whereyou need to engage a little outside help.
there is a private Group here at eng-tips where you could ask the Authors of the GPSA Databook for more detailed questions GPA Section A Design. You may have to beg to get in or be a memeber of the GPA organization.....
RE: Lean oil absorption
www.dewpointcontrol.com
they have used commercial chillers in the past to extract heavies.
RE: Lean oil absorption
Visit: http://www.aet.com/ and you can always request a quotation from these guys.
While I was working on the grassroots design of high-pressure gas plant in Oman (including LPG recovery from Sales Gas), an option for recovering C3+ was an Absorption Process as well. However, due to large driving force available for expander - the plant landing pressure has been selected as 100barg - turboexpander plant (Ortloff's SCORE process) has been confirmed as the most economically viable solution.
Best regards,
http://antwrp.gsfc.nasa.gov/apod/astropix.html
RE: Lean oil absorption
Ortloff has a number of cool designs (ha,ha) that have excellent recovery if you really need to go deep. There are lots of tricks that can be done - hire a process consultant and they can provide you with some comparisons that will be applicable to your gas stream and situation.