Packing and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-11298647-B2
Application number	US-201916255876-A
Country	US
Kind code	B2
Filing date	Jan 24, 2019
Priority date	Aug 1, 2016
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

The packing has one or more thin-layer packing elements that are installed upright, the packing element having a main body portion with a planar liquid film formation surface, and one or more wall portions that are provided upright relative to the liquid film formation surface along a linear direction. The side surface of each wall portion has a curved portion at the base thereof connected to the liquid film formation surface, the curved portion curving so as to continue into the liquid film formation surface.

First claim

What is claimed is:

1. A packing for gas-liquid contact, having at least one packing element of a thin layer shape that is placed in a standing position, the packing element of the thin layer shape comprising:
a main body portion having a planar liquid film-forming surface extending along a liquid flow direction; and
at least one wall portion that is provided upright relative to the liquid film-forming surface and extending along a liquid flow linear direction,
wherein the wall portion has a side surface which has a curved surface portion at a base connected to the liquid film-forming surface, the curved surface portion curving so as to be continuous to the liquid film-forming surface, and
wherein the curved surface portion is a concave surface along a cylindrical surface and is curved with a curvature radius at which a critical Weber number in a liquid film formed by a liquid on the liquid film-forming surface is minimized.

2. The packing according to claim 1 , wherein the wall portion is provided substantially perpendicular to the liquid film-forming surface, and the side surface of the wall portion has a flat surface portion perpendicular to the liquid film-forming surface and continuous to the curved surface portion.

3. The packing according to claim 2 , wherein the packing element has a pair of the wall portions at both side ends of the liquid film-forming surface.

4. The packing according to claim 1 , wherein the packing element has a pair of the wall portions at both side ends of the liquid film-forming surface.

5. The packing according to claim 4 , having a plurality of the packing elements assembled in a parallel state so that the wall portions are positioned to be aligned.

6. The packing according to claim 1 , having a plurality of the packing elements assembled in a parallel state so that the wall portions are positioned to be aligned.

7. The packing according to claim 6 , wherein each of both side ends of the liquid film-forming surface is provided with the wall portion, and
wherein in the state where the plurality of the packing elements are assembled, the main body portions of each of the plurality of the packing elements face each other in a direction perpendicular to the liquid film-forming surface, and a first distance between the wall portions is 10 to 100 times a third distance between the main body portions facing each other.

8. The packing according to claim 7 , wherein a top portion of the wall portion has a second curved surface portion extending in a width direction of the liquid film-forming surface, and
wherein the second curved surface portion is a concave surface along a cylindrical surface and is curved with the curvature radius of the curved surface portion.

9. The packing according to claim 1 , wherein each of both side ends of the liquid film-forming surface is provided with the wall portion, and
wherein a first distance between the wall portions is 10 to 100 times a second distance between a top portion of the wall portion and the liquid film-forming surface in a direction perpendicular to the liquid film-forming surface.

10. The packing according to claim 9 , wherein the top portion of the wall portion has a second curved surface portion extending in a width direction of the liquid film-forming surface, and
wherein the second curved surface portion is a concave surface along a cylindrical surface and is curved with the curvature radius of the curved surface portion.

Assignees

• Ihi Corp
• Univ Osaka Public Corp

Inventors

• Iso Yoshiyuki
• Ikeda Ryosuke
• Nakamura Shiko
• Katoh Kenji
• Wakimoto Tatsuro

Classifications

• B01J10/00 Primary

  Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor (B01J19/08 takes precedence; separation, e.g. distillation, also combined with chemical reactions B01D, {e.g. B01D3/009}) · CPC title

• B01D2257/404

  Nitrogen oxides other than dinitrogen oxide · CPC title

• B01D47/14 Primary

  Packed scrubbers (packing elements B01J19/30, B01J19/32) · CPC title

• B01D53/185

  Liquid distributors · CPC title

• B01J19/247

  Suited for forming thin films · CPC title