US 9,067,172 B1Granted

Solid-state membrane module

AssigneeAir Products and Chemicals, Inc.

InventorsThomas Ray Hinklin, Charles Arthur Lewinsohn

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Abstract

A module for separating oxygen from an oxygen-containing gaseous mixture comprising planar solid-state membrane units, each membrane unit comprising planar dense mixed conducting oxides layers, planar channel-free porous support layers, and one or more planar intermediate support layers comprising at least one channeled porous support layer. The porosity of the planar channeled porous support layers is less than the porosity of the planar channel-free porous support layers.

Claims17

Dependent claims

A module for separating oxygen from an oxygen-containing gaseous mixture, the module comprising a plurality of planar solid-state membrane units, each planar solid-state membrane unit comprising:

a first planar dense mixed conducting oxide layer having no connected-through porosity, the first planar dense mixed conducting oxide layer having a first face and a second face, the second face opposite the first face;
a first planar channel-free porous support layer having connected-through porosity, the first planar channel-free porous support having a first face and a second face, the second face opposite the first face, the first face of the first planar channel-free porous support layer contiguous with the second face of the first planar dense mixed conducting oxide layer;
a first planar channeled porous support layer having connected-through porosity, the first planar channeled porous support layer having a first face and a second face, the second face opposite the first face, the first face of the first planar channeled porous support layer contiguous with the second face of the first planar channel-free porous support layer;
a second planar dense mixed conducting oxide layer having no connected-through porosity, the second planar dense mixed conducting oxide layer having a first face and a second face, the second face opposite the first face;
a second planar channel-free porous support layer having connected-through porosity, the second planar channel-free porous support having a first face and a second face, the second face opposite the first face, the first face of the second planar channel-free porous support layer contiguous with the second face of the second planar dense mixed conducting oxide layer;
and
an outer rim circumscribing the first planar dense mixed conducting oxide layer, the second planar dense mixed conducting oxide layer, the first planar channel-free porous support layer, the second planar channel-free porous support layer, and the first planar channeled porous support layer, the outer rim comprising a dense mixed conducting oxide layer having no connected-through porosity, wherein the dense mixed conducting oxide layer of the outer rim connects the first planar dense mixed conducting oxide layer to the second planar dense mixed conducting oxide layer;
wherein the porosity of the first planar channeled porous support layer is less than the porosity of the first planar channel-free porous support layer.

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Dependencies are inferred from the claim text.

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Abstract

A module for separating oxygen from an oxygen-containing gaseous mixture, the module comprising a plurality of planar solid-state membrane units, each planar solid-state membrane unit comprising:

a first planar dense mixed conducting oxide layer having no connected-through porosity, the first planar dense mixed conducting oxide layer having a first face and a second face, the second face opposite the first face;
a first planar channel-free porous support layer having connected-through porosity, the first planar channel-free porous support having a first face and a second face, the second face opposite the first face, the first face of the first planar channel-free porous support layer contiguous with the second face of the first planar dense mixed conducting oxide layer;
a first planar channeled porous support layer having connected-through porosity, the first planar channeled porous support layer having a first face and a second face, the second face opposite the first face, the first face of the first planar channeled porous support layer contiguous with the second face of the first planar channel-free porous support layer;
a second planar dense mixed conducting oxide layer having no connected-through porosity, the second planar dense mixed conducting oxide layer having a first face and a second face, the second face opposite the first face;
a second planar channel-free porous support layer having connected-through porosity, the second planar channel-free porous support having a first face and a second face, the second face opposite the first face, the first face of the second planar channel-free porous support layer contiguous with the second face of the second planar dense mixed conducting oxide layer;
and
an outer rim circumscribing the first planar dense mixed conducting oxide layer, the second planar dense mixed conducting oxide layer, the first planar channel-free porous support layer, the second planar channel-free porous support layer, and the first planar channeled porous support layer, the outer rim comprising a dense mixed conducting oxide layer having no connected-through porosity, wherein the dense mixed conducting oxide layer of the outer rim connects the first planar dense mixed conducting oxide layer to the second planar dense mixed conducting oxide layer;
wherein the porosity of the first planar channeled porous support layer is less than the porosity of the first planar channel-free porous support layer.

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