Gas separation apparatus and gas separation method

Patent metadata

Field	Value
Publication number	US-11534722-B2
Application number	US-201816607310-A
Country	US
Kind code	B2
Filing date	Oct 25, 2018
Priority date	Nov 7, 2017
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A gas separation apparatus includes a separation membrane module including at least one gas separation membrane element in a housing, a casing for blocking external air, and a heat source unit for adjusting a temperature of a heat medium with which the casing is filled. The casing holds greater than or equal to two separation membrane modules.

First claim

The invention claimed is:

1. A gas separation apparatus comprising:
a separation membrane module including at least one gas separation membrane element in a housing;
a casing for blocking external air; and
a heat source unit for adjusting a temperature of a fluid with which the casing is filled,
wherein the casing holds greater than or equal to two separation membrane modules, and
wherein the gas separation membrane element includes a gas separation membrane including a hydrophilic resin composition layer, and the hydrophilic resin composition layer contains a hydrophilic resin having a structural unit derived from an alkyl acrylate, an alkyl methacrylate, a vinyl ester of a fatty acid, or a derivative thereof.

2. The gas separation apparatus according to claim 1 , wherein the heat source unit is provided at least inside or outside the casing.

3. The gas separation apparatus according to claim 1 , wherein layers constituting the casing have a thermal resistance value of greater than or equal to 0.1 m 2 ·K/W.

4. The gas separation apparatus according to claim 3 , wherein a material forming at least one layer of the layers constituting the casing has a thermal conductivity of 1 W/(m·K) or less.

5. The gas separation apparatus according to claim 1 , wherein the separation membrane module includes greater than or equal to two gas separation membrane elements in a housing.

6. The gas separation apparatus according to claim 1 , further comprising:
a source gas flow pipe for feeding a source gas to the separation membrane module; and
an exhaust gas flow pipe for discharging an exhaust gas from the separation membrane module.

7. The gas separation apparatus according to claim 6 , wherein:
the source gas flow pipe includes a branched part for distributing and feeding the source gas to each of the separation membrane modules;
the exhaust gas flow pipe includes a collecting part for collecting and discharging the exhaust gases discharged by the separation membrane modules; and
at least one of the branched part and the collecting part is provided in the casing.

8. The gas separation apparatus according to claim 6 , wherein the source gas fed to the gas separation membrane element contains at least steam.

9. The gas separation apparatus according to claim 1 , wherein the hydrophilic resin composition layer contains the hydrophilic resin and a substance that reversibly reacts with an acidic gas.

10. The gas separation apparatus according to claim 1 , wherein the gas separation membrane element is a spiral gas separation membrane element.

11. A gas separation method using the gas separation apparatus according to claim 1 , the method comprising the steps of:
adjusting a temperature of the fluid so that the temperature is maintained at a temperature using the heat source unit; and
feeding a source gas to the separation membrane module to perform a gas separation treatment.

Assignees

• Sumitomo Chemical Co
• Renaissance Energy Res Corp

Inventors

• Kodama Nobutaka
• Nakasuji Takehiro
• Okada Osamu
• Teramoto Masaaki
• Hanai Nobuaki

Classifications

• B01D2257/80

  Water · CPC title

• B01D65/00

  Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes · CPC title

• B01D53/227

  in parallel connexion · CPC title

• B01D2257/304

  Hydrogen sulfide · CPC title

• B01D2257/104

  Oxygen · CPC title