Natural gas treatment train

Details Natural gas treatment train Natural gas treatment train

1997-07-14

1999-10-12

Spitzer, Robert

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

95 39, 95 52, 95117, 95235, 95236, 96 9, 96108, B01D 5322, B01D 5326

Patent

active

059649232

ABSTRACT:
A process train for treating a gas stream containing methane, nitrogen, and at least one of water vapor, acid gas, C.sub.3+ hydrocarbons and aromatic hydrocarbons, the gas stream typically, but not necessarily, being natural gas. The treatment train includes separation of methane from nitrogen by means of membranes that preferentially permeate methane and reject nitrogen. Preferred processes include both a dehydration step and an NGL removal step to treat the gas before it passes to the methane
itrogen membrane separation step. The process train can also include additional steps, such as an acid gas removal step, or a cryogenic methane
itrogen separation step.

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