Gas-liquid contact apparatus

Patent metadata

Field	Value
Publication number	US-11305244-B2
Application number	US-202017068005-A
Country	US
Kind code	B2
Filing date	Oct 12, 2020
Priority date	Apr 25, 2018
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

A gas-liquid contact apparatus has a gas-liquid contact unit, a liquid supply system, and a gas supply system. The gas-liquid contact unit includes a plurality of stages which are allocated so as to be arranged in the lateral direction. Each of the plurality of stages includes a plurality of vertical flat plates arranged parallel to each other at intervals. The liquid supply system supplies a liquid to the gas-liquid contact unit, and causes the liquid to be circulated along the arrangement of the plurality of stages successively. The gas supply system supplies a gas to the gas-liquid contact unit, and causes the gas to be circulated along the arrangement of the plurality of stages successively. The supplied liquid flows down on the plurality of vertical flat plates in each of the plurality of stages, and comes into contact with the supplied gas.

First claim

What is claimed is:

1. A gas-liquid contact apparatus, comprising:
a gas-liquid contact portion including a plurality of stages which are allocated so as to be arranged in a lateral direction, each of the plurality of stages having a plurality of vertical flat plates arranged in parallel;
a liquid supply system which supplies a liquid to the gas-liquid contact portion and causes the liquid to flow along an arrangement of the plurality of stages successively; and
a gas supply system which supplies a gas to the gas-liquid contact portion,
wherein the liquid supplied by the liquid supply system flows down on the plurality of vertical flat plates in each of the plurality of stages and comes into contact with the supplied gas.

2. The gas-liquid contact apparatus according to claim 1 , wherein the gas supplied to the gas-liquid contact portion sequentially flows along the arrangement through the plurality of stages, and an order in which the liquid supplied by the liquid supply system flows through the plurality of stages is the same as or opposite to an order in which the gas supplied by the gas supply system flows through the plurality of stages.

3. The gas-liquid contact apparatus according to claim 1 , wherein the gas supply system has a gas introduction port communicating with a stage through which the gas first flows, a gas discharge port communicating with a stage through which the gas finally flows, and a demister provided in the gas discharge port.

4. The gas-liquid contact apparatus according to claim 1 , wherein the plurality of stages are in lateral communication with each other such that the gas supplied by the gas supply system passes through the plurality of stages in the lateral direction, and the plurality of vertical flat plates in each of the plurality of stages are arranged along a direction in which the gas passes.

5. The gas-liquid contact apparatus according to claim 1 , wherein the gas supply system further comprises a guide wall which guides the gas so that gas flow in the plurality of stages alternately repeats rising and falling for each stage.

6. The gas-liquid contact apparatus according to claim 1 , wherein the gas supply system further comprises a guide wall which forms a communication passage to guide the gas from an upper part of one of the plurality of stages to a lower part of a stage through which the gas flows next, thereby, the gas flows so as to rise between the flat plates in each of the plurality of stages.

7. The gas-liquid contact apparatus according to claim 4 , wherein the gas-liquid contact portion further has a partition wall, at boundary of the plurality of stages, which prevents the gas from flowing over or under the plurality of flat plates.

8. The gas-liquid contact apparatus according to claim 1 , further comprising a laterally long container, wherein the plurality of stages are assigned in the laterally long container to be arranged in a longitudinal direction.

9. The gas-liquid contact apparatus according to claim 1 , wherein the liquid supply system comprises:
a plurality of liquid distributors provided respectively on the upper side of each of the plurality of stages;
a plurality of liquid recovery ports provided respectively on the lower side of each of the plurality of stages; and
a piping which connects the plurality of liquid distributors and the plurality of liquid recovery ports so that, in the plurality of stages, the liquid recovery port of one stage and the liquid distributor of the stage to which the liquid is next supplied are connected.

10. The gas-liquid contact apparatus according to claim 9 , further comprising:
a branch pipe that branches from the piping to connect to the one stage so that a part of the liquid recovered from the one stage returns to the one stage.

11. The gas-liquid contact apparatus according to claim 1 , wherein the liquid supply system comprises:
a plurality of liquid distributors provided respectively on the upper side of each of the plurality of stages to supply the liquid to the plurality of flat plates;
a plurality of liquid recovery ports provided respectively on the lower side of each of the plurality of stages to collect the liquid flowing down the plurality of flat plates;
a piping which connects the plurality of liquid distributors and the plurality of liquid recovery ports so that, in each of the plurality of stages, the liquid recovered from the liquid recovery port is returned to the liquid distributor; and
a partition wall provided at the boundary between the plurality of stages, having a height that regulates an amount of liquid remaining in one stage to a predetermined amount in the plurality of stages, and that excess liquid exceeding the predetermined amount flows to the stage to which the liquid is next supplied.

12. The gas-liquid contact apparatus according to claim 1 , wherein the liquid supply system comprises:
a plurality of liquid distributors provided respectively on the upper side of each of the plurality of stages;
a plurality of liquid recovery ports provided respectively on the lower side of each of the plurality of stages; and
a piping which connects the plurality of liquid distributors and the plurality of liquid recovery ports so that, in the plurality of stages, the liquid recovery port of one stage and the liquid distributor of the stage to which the liquid is next supplied are connected,
wherein, in each of the plurality of stages other than the stage to which the liquid is first supplied, the liquid distributor in one stage is arranged to possibly supply the liquid across the two stage of the one stage and the preceding stage.

13. The gas-liquid contact apparatus according to claim 9 , wherein the liquid supply system comprises:
at least one heat exchanger provided in the piping for adjusting temperature of the liquid; and
a power source for supplying the liquid.

14. The gas-liquid contact apparatus according to claim 8 , wherein the laterally long container has a shape in which the longitudinal direction curves or bends, and the plurality of stages are assigned in the laterally container to be arranged in the longitudinal direction curving or bending.

15. The gas-liquid contact apparatus according to claim 8 , wherein the laterally long container has a shape in which the longitudinal direction is branched.

16. The gas-liquid contact apparatus according to claim 5 , wherein the plurality of vertical flat plates in each of the plurality of stages are arranged along a direction in which the gas passes.

17. The gas-liquid contact apparatus according to claim 6 , wherein the plurality of vertical flat plates in each of the plurality of stages are arranged along a direction in which the gas passes.

Assignees

• Ihi Corp

Inventors

• Nakamura Shiko
• Iso Yoshiyuki
• Takano Kenji
• Okuno Shinya
• Ikeda Ryosuke
• OKUHARA Hirohito

Classifications

• B01J10/02 Primary

  of the thin-film type · CPC title

• B01D2257/404

  Nitrogen oxides other than dinitrogen oxide · CPC title

• B01F2101/2204

  Mixing chemical components in generals in order to improve chemical treatment or reactions, independently from the specific application · CPC title

• B01F23/214 Primary

  using a gas-liquid mixing column or tower · CPC title

• B01F2025/918

  Counter current flow, i.e. flows moving in opposite direction and colliding · CPC title