Gas separation composite membrane, gas separation module, gas separation device, gas separation method, and method of producing gas separation composite membrane

• US 10,226,743 B2
• Filed: 07/05/2016
• Issued: 03/12/2019
• Est. Priority Date: 02/12/2014
• Status: Expired due to Fees

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Nagai, Takayasu, Sawai, Daisuke, Sano, Satoshi
• Primary Examiner(s): Shumate, Anthony R
• Application Number:
  US15/201,663
• Publication Number:
  US 20160310911A1
• Time in Patent Office: 980 Days
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2323/081 Heating
• CPC Class Codes: B01D 2323/30 Cross-linking
• CPC Class Codes: B01D 2323/64 Use of a temporary support
• CPC Class Codes: B01D 2325/04 Characteristic thickness
• CPC Class Codes: B01D 53/228 characterised by specific membranes
• CPC Class Codes: B01D 65/003 Membrane bonding or sealing
• CPC Class Codes: B01D 67/0006 by chemical reactions in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125
• CPC Class Codes: B01D 69/12 Composite membranes; Ultra-thin membranes
• CPC Class Codes: B01D 69/1213 Laminated layers
• CPC Class Codes: B01D 71/64 Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: B32B 2307/724 Permeability to gases, adsorption
• CPC Class Codes: B32B 2309/02 Temperature
• CPC Class Codes: B32B 37/06 characterised by the heating method
• CPC Class Codes: B32B 37/1292 selectively, e.g. in stripes, in patterns B32B37/0076 takes precedence
• CPC Class Codes: B32B 38/10 Removing layers, or parts of layers, mechanically or chemically
• CPC Class Codes: C08G 73/10 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: C08G 73/1007 from tetracarboxylic acids or derivatives and diamines
• CPC Class Codes: C08G 73/1039 comprising halogen-containing substituents
• CPC Class Codes: C08G 73/1042 Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
• CPC Class Codes: C08G 73/1067 : Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
• CPC Class Codes: Y02C 20/40 : of CO2
• CPC Class Codes: Y02P 20/151 : Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Abstract

Provided are a gas separation composite membrane including a gas separation layer which is formed to include a polyimide compound on the upper side of a gas permeating support, in which the solubility of the polyimide compound in dimethylacetamide at 20° C. is 20 mg/100 g or less, and the thickness of the gas separation layer is 0.1 μm or greater and less than 5.0 μm, a method of producing the same, a gas separation module using the gas separation composite membrane, a gas separation device, and a gas separation method.

Claims

1. A gas separation composite membrane comprising:

a gas separation layer which is formed to include a polyimide compound insolubilized through a heat treatment at 200°

C. or higher on the upper side of a gas permeating support,

wherein the solubility of the insolubilized polyimide compound in dimethylacetamide at 20°

C. is 20 mg/100 g or less, and

the thickness of the gas separation layer is 0.1 μ

m or greater and less than 5.0 μ

m.

2. The gas separation composite membrane as claimed in claim 1, further comprising an adhesive layer on at least a portion between the gas separation layer and the gas permeating support.

3. The gas separation composite membrane as claimed in claim 1, wherein the gas permeating support is an organic porous support.

4. The gas separation composite membrane as claimed in claim 1, wherein the gas separation composite membrane allows carbon dioxide to selectively permeate from gas containing carbon dioxide and methane.

5. A gas separation module comprising the gas separation composite membrane as claimed in claim 1.

6. A gas separation device comprising the gas separation module as claimed in claim 5.

7. A gas separation method comprising:

allowing carbon dioxide to selectively permeate from gas containing carbon dioxide and methane using the gas separation membrane as claimed in claim 1.