Hydrogen purification device and hydrogen purification system using hydrogen purification device

Patent metadata

Field	Value
Publication number	US-10105641-B2
Application number	US-201715473483-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Apr 6, 2016
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

In order to provide a hydrogen purification device in which a source gas is supplied, from which a purified gas flows out, that is easily manufacturable, and in which the pressure resistance of an hydrogen permeable membrane is high, the hydrogen purification device is configured to include a hydrogen permeable membrane allowing hydrogen to selectively permeate therethrough, two porous supports that sandwich and support the hydrogen permeable membrane from both surfaces thereof, and a casing having a space formed therein configured to accommodate reaction of the source gas and the hydrogen permeable membrane. The porous supports are contained inside the casing, an outermost edge of the hydrogen permeable membrane extends outward from the outer edges of the porous supports in at least one location, and a peripheral portion of the hydrogen permeable membrane in a vicinity of the outermost edge and the casing are airtightly sealed to each other.

First claim

The invention claimed is:

1. A hydrogen purification device in which a source gas is supplied and from which a purified gas flows out, comprising:
a hydrogen permeable membrane allowing hydrogen to selectively permeate therethrough;
two porous supports that sandwich and support the hydrogen permeable membrane from both surfaces thereof; and
a casing having a space formed therein configured to accommodate reaction of the source gas and the hydrogen permeable membrane;
wherein:
the porous supports are contained inside the casing;
an outermost edge of the hydrogen permeable membrane extends outward from outer edges of the porous supports in at least one location;
a peripheral portion of the hydrogen permeable membrane in a vicinity of the outermost edge and the casing are airtightly sealed to each other by at least a welded part in the vicinity of the outermost edge and the casing,
a heat concentration structure is formed at least partially around the welded part to concentrate heat during welding of the welded part, and
the heat concentration structure is formed circulating around a side surface of the casing.

2. The hydrogen purification device according to claim 1 , wherein
both of the surfaces of the hydrogen permeable membrane are welded to the casing.

3. The hydrogen purification device according to claim 1 , wherein
one of the two porous supports is a first porous support which supports the hydrogen permeable membrane from an inflow side of the purified gas and the other of the two porous supports is a second porous support which supports the hydrogen permeable membrane from an outflow side of the source gas, and
between the first porous support and the casing, a source gas inflow space into which the source gas flows is provided.

4. The hydrogen purification device according to claim 3 , wherein
a source gas supply port for supplying the source gas and a source gas discharge port for discharging the source gas not permeating through the hydrogen permeable membrane are provided in the casing,
one of the source gas supply port and the source gas discharge port opens toward a first containing space containing the first porous support and the other of the source gas supply port and the source gas discharge port opens toward the source gas inflow space, and
around the one of the source gas supply port and the source gas discharge port, a barrier wall which partitions between the source gas inflow space and the source gas supply port or the source gas discharge port is provided in contact with the first porous support.

5. The hydrogen purification device according to claim 1 , wherein
the hydrogen permeable membrane is made of a palladium alloy.

6. The hydrogen purification device according to claim 1 , wherein
the porous supports are respectively metallic sintered bodies.

7. A hydrogen purification system comprising the hydrogen purification device according to claim 1 ;
a source gas supply mechanism which supplies the source gas to the hydrogen purification device; and
a temperature control mechanism which controls a temperature of the hydrogen purification device.

Assignees

• Horiba Stec Co Ltd

Inventors

• Yoshimura Tomotaka

Classifications

• B01D2311/103

  Heating · CPC title

• B01D65/003

  Membrane bonding or sealing · CPC title

• B01D71/022

  Metals · CPC title

• B01D63/087

  Single membrane modules · CPC title

• B01D53/228 Primary

  characterised by specific membranes · CPC title