US 6,551,386 B2Granted

Oxygen separation device

AssigneeAlstom (Switzerland) Ltd

InventorLudwig Weiler

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Abstract

The invention relates to an oxygen separation device comprising a housing, in which a membrane body separates a first chamber from a second chamber. The membrane body comprises several first channels and several second channels. The channels are arranged in the housing in such a way that their ends on one side of the membrane body are exposed to the first chamber, while their ends on the other side of the membrane body are exposed to the second chamber. In all first channels, the ends exposed to the first chamber are open, and the ends exposed to the second chamber are closed. In all second channels, the ends exposed to the first chamber are closed, and the ends exposed to the second chamber are open. The walls of the channels are formed by an oxygen transport membrane of the membrane body. The oxygen transport membrane is positioned so that the insides of the first channels are formed by the retention side of the oxygen transport membrane, and the insides of the second channels are formed by the permeation side of the oxygen transport membrane. The membrane body is held in a gas-tight manner on its outside between the ends of the channels.

Claims12

Dependent claims

An oxygen separation device comprising:

a membrane body;
and
a housing, in which the membrane body separates a first chamber from a second chamber,
wherein the housing comprises a first inlet that communicates with the first chamber and is used to introduce an oxygen-containing gas and a second inlet that communicates with the second chamber and is used to introduce a gas to be enriched with oxygen,
wherein the membrane body comprises an oxygen transport membrane that has a retention side and a permeation side and is designed so that it transports oxygen from the retention side to the permeation side,
wherein the membrane body is arranged inside the housing in such a way that the retention side of the oxygen transport membrane communicates with the first chamber, and the permeation side of the oxygen transport membrane communicates with the second chamber,
wherein the oxygen transport membrane removes oxygen from the introduced oxygen-containing gas and feeds this oxygen into the introduced gas to be enriched with oxygen, so that in the first chamber an oxygen-reduced gas and in the second chamber an oxygen-enriched gas are formed,
wherein the housing comprises a first outlet that communicates with the first chamber and is used to discharge the oxygen-reduced gas and a second outlet that communicates with the second chamber and is used to discharge the oxygen-enriched gas,
wherein the membrane body is provided with several juxtaposed channels that are divided into first channels and second channels, the channels arranged in the housing in such a way that a first end of each channel on one side of the membrane body is exposed to the first chamber, while a second end of each channel on the other side of the membrane body is exposed to the second chamber,
wherein in all first channels, the first end is constructed open, and the second end is constructed closed,
wherein in all second channels, the first end is constructed closed, and the second end is constructed open,
wherein the membrane body is constructed so that adjoining channels have common walls,
wherein walls of the channels are formed by the oxygen transport membrane,
wherein the oxygen transport membrane is positioned so that an inside of the first channels is formed by the retention side of the oxygen transport membrane, and an inside of the second channels is formed by the permeation side of the oxygen transport membrane, and
wherein the membrane body is held in a gas-tight manner on an outside between the ends of the channels by way of holding means at the housing.

12 more elements

An oxygen separation device comprising:

a housing comprising a first inlet, a second inlet, a first outlet, and a second outlet;
a membrane body comprising an oxygen transport membrane and a plurality of juxtaposed channels and separating the housing into a first chamber and second chamber, the oxygen transport membrane having a retention side and a permeation side and designed to transport oxygen from the retention side to the permeation side, and the plurality of juxtaposed channels divided into first channels and second channels and arranged in the housing such that a first end of each channel on one side of the membrane body is exposed to the first chamber and a second end of each channel on another side of the membrane body is exposed to the second chamber;
and
means for holding the membrane body in a gas-tight manner at an outside between the ends of the channels by way of holding means,
wherein the retention side of the oxygen transport membrane communicates with the first chamber and the permeation side of the oxygen transport membrane communicates with the second chamber,
wherein the first inlet communicates with the first chamber and is used to introduce an oxygen-containing gas and the second inlet communicates with the second chamber and is used to introduce a gas to be enriched with oxygen,
wherein the oxygen transport membrane removes oxygen from the introduced oxygen-containing gas and feeds the oxygen into the introduced gas to be enriched with oxygen, so that in the first chamber an oxygen-reduced gas and in the second chamber an oxygen-enriched gas are formed,
wherein the first outlet communicates with the first chamber and is used to discharge the oxygen-reduced gas and the second outlet communicates with the second chamber and is used to discharge the oxygen-enriched gas,
wherein in all first channels the first end is constructed open and the second end is constructed closed and in all second channels the first end is constructed closed, and the second end is constructed open,
wherein the membrane body is constructed so that adjoining first and second channels have a common wall,
wherein walls of the channels are formed by the oxygen transport membrane, and
wherein the oxygen transport membrane is positioned so that an inside of the first channels is formed by the retention side of the oxygen transport membrane, and an inside of the second channels is formed by the permeation side of the oxygen transport membrane.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/006,708Filed 10 Dec 2001
Priority: DE 100 64 89423 Dec 2000
Published: US 2002/0129708 A119 Sep 2002
Granted: 22 Apr 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B01D 63/06
Apparatus in general for separation processes using semi-permeable membranes: tubular membrane modules
B01D 53/227
Multiple stage diffusion: in parallel connexion
B01D 63/066
Tubular membrane modules: with a porous block having membrane coated passages
C01B 13/0251
Physical processing only: by making use of membranes