Filtration structure for carbon dioxide scrubber

Patent metadata

Field	Value
Publication number	US-2020324246-A1
Application number	US-201916382646-A
Country	US
Kind code	A1
Filing date	Apr 12, 2019
Priority date	Apr 12, 2019
Publication date	Oct 15, 2020
Grant date	—

Abstract

Disclosed is a filtration structure, comprising: a substrate, wherein the substrate is a three-dimensional lattice formed from repeating geometric shapes; a layer of porous material bonded over the substrate; and a liquid amine retained within the pores of the porous material. Also disclosed is a carbon dioxide scrubber comprising the filtration structure.

First claim

What is claimed is:

1 . A filtration structure, comprising:
a substrate, wherein the substrate is a three-dimensional lattice formed from repeating geometric shapes; a layer of porous material bonded over the substrate; and a liquid amine retained within the pores of the porous material.

2 . The filtration structure of claim 1 , wherein the substrate is a single monolithic structure.

3 . The filtration structure of claim 1 , wherein the substrate comprises passages for the fluid flow of gas, liquid, or combinations thereof.

4 . The filtration structure of claim 3 , wherein a diameter of the passages for the fluid flow of gas is about 0.55 millimeters to about 0.65 millimeters.

5 . The filtration structure of claim 1 , wherein the substrate comprises a conductive material.

6 . The filtration structure of claim 5 , wherein the substrate comprises aluminum, aluminum alloy, copper, copper alloy, silver, gold, stainless steel, or combinations thereof.

7 . The filtration structure of claim 1 , wherein the repeating geometric shapes are polyhedral, rectangular, elliptical, triangular, annular, honeycombs, or combinations thereof.

8 . The filtration structure of claim 1 , wherein a thickness of the substrate is about 0.025 millimeters to about 0.25 millimeters.

9 . The filtration structure of claim 1 , wherein the layer of porous material comprises polymer, silica gel, alumina, zeolites, carbon, or combinations thereof.

10 . The filtration structure of claim 9 , wherein the layer of porous material comprises polytetrafluoroethylene, polyvinylidene fluoride, polyethersulphone, poly(methyl methacrylate), polystyrene, polyethylene, pyrolyzed polyacrylonitrile, or combinations thereof.

11 . The filtration structure of claim 1 , wherein a thickness of the layer of porous material is about 0.01 millimeters to about 2 millimeters.

12 . The filtration structure of claim 1 , wherein a diameter of the pores in the porous material is about 0.02 micrometer to about 5 micrometers.

13 . The filtration structure of claim 1 , wherein the layer of porous material is bonded over the substrate via suspension polymerization, welded to the substrate, or combinations thereof.

14 . The filtration structure of claim 1 , further comprising a layer of adhesive between the substrate and the layer of porous material.

15 . The filtration structure of claim 1 , wherein the liquid amines are branched, linear, or combinations thereof.

16 . The filtration structure of claim 1 , wherein a density of liquid amine in the filtration structure is about 0.25 milliliters to about 0.5 milliliters per cubic centimeter of the filtration structure.

17 . The filtration structure of claim 1 , wherein the substrate is formed via extrusion.

18 . The filtration structure of claim 1 , further comprising a parting sheet which partitions the filtration structure into two or more beds.

19 . A carbon dioxide scrubber comprising the filtration structure of claim 1 .

20 . The carbon dioxide scrubber of claim 19 , wherein the carbon dioxide scrubber does not comprise a retention screen.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Filburn Thomas P
• Hugener Theresa A
• Walsh Peter J
• Ranz Holden T

Classifications

• B01D46/2488

  Triangular · CPC title

• B01D46/249

  Quadrangular e.g. square or diamond · CPC title

• B01D46/2486

  characterised by the shapes or configurations · CPC title

• B01D46/2476

  Monolithic structures · CPC title

• B01D46/2474

  of the walls along the length of the honeycomb · CPC title