Turbo Expander and Slug Catcher
Turbo Expander and Slug Catcher
(OP)
Dear Friends,
I am working on the Gas Treating Plant. The feed of our plant comes from two NGL sources and in the inlet of our plant we have considered one Slug Catcher. Nowadays we informed that Turboexpander in two NGL will be in the services so the voulme of our slug catcher will be decrease. i don't know the relation between Turbo Expander and Slug Catcher. How the Turbo Expander decrease the liquid in the gas ?
I will be highly appreciated if someone help me in this regard.
I am working on the Gas Treating Plant. The feed of our plant comes from two NGL sources and in the inlet of our plant we have considered one Slug Catcher. Nowadays we informed that Turboexpander in two NGL will be in the services so the voulme of our slug catcher will be decrease. i don't know the relation between Turbo Expander and Slug Catcher. How the Turbo Expander decrease the liquid in the gas ?
I will be highly appreciated if someone help me in this regard.





RE: Turbo Expander and Slug Catcher
By almost isentropic expansion you have two-phase fluid at the outlet of turboexpander: gas, and liquid hydrocarbons which are removed from the system. This type of facility is usually employed for meeting target gas parameters such are cricondetherm temperature, dew point etc. There should be no liquids in gas treating unit inlet scrubber.
http://antwrp.gsfc.nasa.gov/apod/astropix.html
RE: Turbo Expander and Slug Catcher
As most of the condensate is removed the slug catcher volume requirement is decreased.
RE: Turbo Expander and Slug Catcher
RE: Turbo Expander and Slug Catcher
Advanced controls limit the ethane in residue gas to just barely make the BTU contract during a good liquids market -- and adds heat to boil the ethane off during a bad liquids market.
RE: Turbo Expander and Slug Catcher
In plants you end up at dew point in the deethanizer/demethanizer overhead and they operate well below -40, so it'll take a -40 or colder to make liquids.