Demister, absorption liquid absorbing tower, and demister production method

Patent metadata

Field	Value
Publication number	US-12409408-B2
Application number	US-202117915242-A
Country	US
Kind code	B2
Filing date	Feb 10, 2021
Priority date	Mar 30, 2020
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

Provided are a demister, an absorption liquid absorbing tower, and a demister production method that enable efficient collection of mist. A demister for collecting a mist containing CO 2 absorption liquid, the demister comprising a plurality of laminates each including a first layer in which a plurality of linear structures having the axial direction aligned with a first direction are arranged in parallel to a second direction orthogonal to the first direction and a second layer in which a plurality of linear structures having the axial direction aligned with a direction different from the first direction are arranged in parallel in a direction orthogonal to said axial direction, wherein the laminates are stacked in a direction orthogonal to both the first and second directions.

First claim

The invention claimed is:

1. An absorption liquid absorbing tower comprising:
an absorbing tower body to which a gas containing CO 2 is supplied; and
a demister for collecting mist containing a CO 2 absorption liquid,
wherein the demister
disposed between an inlet into which the gas is supplied and an outlet into which the CO 2 -removed flue gas obtained by removing the CO 2 from the gas is discharged in the absorption tower body,
is a plurality of laminates including a first layer in which a plurality of linear structures having a first direction serving as an axial direction are disposed in parallel in a second direction orthogonal to the first direction, and a second layer in which a plurality of linear structures having a direction serving as an axial direction and different from the first direction are disposed in parallel in a direction orthogonal to the axial direction, are laminated in a direction orthogonal to the first direction and the second direction,
in the first layer, a position of the structure in the second direction is deviated from the structure of the first layer of at least one of other laminates, and
the demister has a grid structure in which layers having a constant wire diameter and interval of the structure are superimposed,
a laminating direction of the plurality of laminates is a direction from the inlet toward the outlet.

2. An absorption liquid absorbing tower according to claim 1 ,
wherein in the first layer, a wire diameter of the structure and an interval between the structures adjacent to each other are constant, and
in the second layer, a wire diameter of the structure and an interval between the structures adjacent to each other are constant.

3. An absorption liquid absorbing tower according to claim 1 ,
wherein in the second layer, the second direction of the structure is the axial direction.

4. An absorption liquid absorbing tower according to claim 1 , further comprising:
a holding unit disposed around the laminate and supporting end portions of the structures of the first layer and the second layer.

5. An absorption liquid absorbing tower according to claim 1 further comprising:
an absorption liquid supply unit that supplies an absorption liquid to the absorbing tower body;
the demister is disposed on a downstream side in a flow direction of the gas from an absorption liquid supply position of the absorption liquid supply unit of the absorbing tower body.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Yui Yuichi
• Okuda Akihisa
• Kuriki Hidenori
• Kishimoto Shinya
• Iwakura Keisuke
• Tarumi Takeyasu

Classifications

• B01D53/78

  with gas-liquid contact · CPC title

• B01D53/62

  Carbon oxides · CPC title

• B01D53/18

  Absorbing units; Liquid distributors therefor (B01D3/16, B01D3/26, B01D3/30 take precedence; packing elements B01J19/30, B01J19/32) · CPC title

• B01D53/1418

  Recovery of products · CPC title

• Y02P20/151

  Reduction of greenhouse gas [GHG] emissions, e.g. CO2 · CPC title