Gas separation using coated membranes

Details Gas separation using coated membranes Gas separation using coated membranes

2005-05-24

2005-05-24

Spitzer, Robert H. (Department: 1724)

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

C095S045000, C095S055000, C096S008000, C096S010000, C096S013000, C096S014000

Reexamination Certificate

active

06896717

ABSTRACT:
A membrane-based process for separating mixtures of target gases if the gas mixture also contains C3+hydrocarbon vapors. The process uses gas-separation membranes having a base membrane and a coating layer. The base membrane incorporates a selective layer made from a polymer selective between the light gases to be separated. The coating layer comprises a fluorinated polymer capable of protecting the base membrane from C3+hydrocarbon vapors and liquids.

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