Desulfurization device

Patent metadata

Field	Value
Publication number	US-11364467-B2
Application number	US-201816603931-A
Country	US
Kind code	B2
Filing date	Sep 18, 2018
Priority date	Sep 20, 2017
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

Provided is a desulfurization device that allows for the easy and accurate disposition of a spray pipe inside an absorption tower. Provided is a desulfurization device including: an absorption tower (10); and a spray pipe (20) disposed inside the absorption tower (10). The spray pipe (20) includes: a cylindrical pipe portion (21), the leading end of which is closed; and an attachment flange (24) attached to the pipe portion (21). The absorption tower (10) includes: an opening hole (14e) opening toward the side; and a flange (14a) disposed around the opening hole (14e). The attachment flange (24) and the flange (14a) are detachably attached.

First claim

The invention claimed is:

1. A desulfurization device comprising:
an absorption tower serving as a passage for exhaust gas; and
a spray pipe disposed inside the absorption tower, wherein
the spray pipe includes
a cylindrical pipe portion having a leading end closed,
a first flange portion attached to the pipe portion, and
a leg portion attached to a lower portion of the pipe portion in the vertical direction,
the absorption tower includes
an opening hole opening laterally,
a second flange portion disposed around the opening hole, and
a supporting portion configured to support the leg portion of the spray pipe,
the first flange portion and the second flange portion are detachably attached.

2. The desulfurization device according to claim 1 , comprising:
a prescribed number of the spray pipes, wherein
the absorption tower includes
a prescribed number of the opening holes, and
a prescribed number of the second flange portions, and
a prescribed number of the first flange portions are respectively attached to the prescribed number of the second flange portions in a one-to-one manner.

3. The desulfurization device according to claim 1 , wherein
an axis line of the pipe portion extends along a horizontal direction, and a position of the axis in a vertical direction is disposed lower than a center position of the opening hole in the vertical direction.

4. The desulfurization device according to claim 1 , wherein
the pipe portion is disposed in a state where a lower end portion of the pipe portion does not contact the opening hole.

5. The desulfurization device according to claim 1 , wherein
the first and second flange portions are generally rectangular in shape with the corners cut off.

6. The desulfurization device according to claim 1 , wherein
the center position of the pipe when looking from the end of the pipe is offset from the center of the hole.

7. The desulfurization device according to claim 1 , wherein
the opening hole is rectangular.

8. The desulfurization device according to claim 7 , wherein
the first flange portion and the second flange portion are rectangular in shape.

9. A desulfurization device comprising:
an absorption tower serving as a passage for exhaust gas; and
a spray pipe disposed inside the absorption tower, wherein
the spray pipe includes
a cylindrical pipe portion having a leading end closed,
a first flange portion attached to the pipe portion, and
a leg portion attached to a lower portion of the pipe portion in the vertical direction,
the absorption tower includes
an opening hole opening laterally, and
a second flange portion disposed around the opening hole, and
the first flange portion and the second flange portion are detachably attached,
wherein an axis line of the pipe portion extends along a horizontal direction, and a position of the axis in a vertical direction is disposed lower than a center position of the opening hole in the vertical direction, and
a position of a lower end of the leg portion in the vertical direction is disposed lower than a position of a lower end of the opening hole in the vertical direction.

10. A desulfurization device according to claim 1 , comprising:
an absorption tower serving as a passage for exhaust gas; and
a spray pipe disposed inside the absorption tower, wherein
the spray pipe includes
a cylindrical pipe portion having a leading end closed, and
a first flange portion attached to the pipe portion,
the absorption tower includes
an opening hole opening laterally, and
a second flange portion disposed around the opening hole, and
the first flange portion and the second flange portion are detachably attached,
wherein the spray pipe includes
a leg portion attached to a lower portion of the pipe portion in the vertical direction and having a first surface,
a plurality of nozzle holders disposed at a plurality of locations on an upper portion of the pipe portion in the vertical direction, and guiding a liquid absorbent upward in the vertical direction, the liquid absorbent flowing through the pipe portion in the horizontal direction, and
a spray nozzle detachably attached to each of the plurality of nozzle holders and injecting the liquid absorbent upward in the vertical direction,
the desulfurization device comprises a supporting portion installed in the absorption tower to support the spray pipe and having a second surface,
the spray pipe is supported in a state where the first surface faces the second surface, and
a height from a lower end portion to an upper end portion of the opening hole is higher than a height from the first surface of the leg portion to an upper end portion of the nozzle holder, in the vertical direction.

Assignees

• Mitsubishi Hitachi Power Sys Ltd
• Mitsubishi Power Ltd

Inventors

• Sugita Satoru
• Ushiku Tetsu
• Sasaki Ryozo
• Yoshizumi Naoyuki
• Miyachi Tsuyoshi
• Kagawa Seiji

Classifications

• B01D2247/04

  Regenerating the washing fluid · CPC title

• B01D47/06

  Spray cleaning · CPC title

• B01D2252/1035

  Sea water · CPC title

• B01D2247/107

  using an unstructured demister, e.g. a wire mesh demister · CPC title

• B01D2257/302

  Sulfur oxides · CPC title