Process and apparatus for separation of a gaseous mixture by suc

Details Process and apparatus for separation of a gaseous mixture by suc Process and apparatus for separation of a gaseous mixture by suc

1995-04-11

1996-07-23

Spitzer, Robert

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

95 51, 95 52, 95 54, 95 47, 96 9, B01D 5322, B01D 7164

Patent

active

055385362

ABSTRACT:
Process and apparatus for the separation of at least one gas from an entering gaseous mixture (1), of the type in which a membrane separation is conducted with at least two successive membrane separators in the following manner: the entering mixture is passed through a first membrane separator (2) operating at a first operating temperature and all or a portion of the residual mixture (5) from this first membrane separator is passed through a second membrane separator (3) operating at a second operating temperature. A mixture enriched in the gas is obtained from the permeate outlet (6, 4) of each of these two separators. Two separators are used whose selectivities for the gas are different. These may be membranes of different type, or membranes of the same type, if the first operating temperature is different from the second operating temperature.

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