JP7278908B2 - CO2 RECOVERY SYSTEM AND METHOD OF OPERATION THEREOF - Google Patents

Description

Embodiments of the present invention relate to carbon dioxide capture systems and methods of operating same.

In recent years, carbon dioxide capture and storage (CCS) technology has attracted attention as an effective measure against the problem of global warming. For example, a carbon dioxide recovery system for recovering carbon dioxide in process exhaust gas (gas to be treated) generated in a thermal power plant, a steel mill, or the like using an absorbent is being studied.
In general, a carbon dioxide recovery system includes an absorption part that absorbs carbon dioxide into an absorption liquid, and a regeneration part that heats the absorption liquid discharged from the absorption part to release carbon dioxide from the absorption liquid and regenerate the absorption liquid. and The regeneration unit can be configured using various heating means according to the amount of heat required to heat the absorbing liquid. For example, a reboiler may be used to heat the absorbent with steam, or an electric heater may be used to heat the absorbent with Joule heat.

The regeneration section may be configured as a column having packing or the like, or may be configured in a form other than a column. For example, the former reproducing unit is employed when the reproducing unit is desired to be configured simply. On the other hand, the latter regenerating unit is employed when there are restrictions on the amount of absorbent to be processed, processing conditions, processing space, and the like. The latter regeneration section can be realized by inserting a heating section into a container (for example, a flash drum or a gas-liquid separation tank) that stores the absorbent. However, the latter regeneration unit heats the absorbing liquid while continuously supplying it into the container to release carbon dioxide. Problems arise that the liquid heating efficiency deteriorates and the carbon dioxide recovery performance deteriorates.

JP-A-2018-1086

Accordingly, an object of an embodiment of the present invention is to provide a carbon dioxide recovery system capable of realizing a regeneration unit having excellent absorption liquid heating efficiency, and an operating method thereof.

According to one embodiment, a carbon dioxide recovery system includes contacting a gas to be treated containing carbon dioxide with an absorption liquid, and an absorption part for discharging an absorption part exhaust gas containing a gas, the absorption liquid that diffuses the carbon dioxide from the absorption liquid discharged from the absorption part, the absorption liquid that diffuses the carbon dioxide, and the absorption liquid that is diffused from the absorption liquid and a regeneration unit for discharging the regeneration unit exhaust gas containing the carbon dioxide. The regeneration unit has a container for containing the absorbent discharged from the absorption unit, a heating unit provided in the container, and one or more openings through which the absorbent in the container passes. and a partition plate provided above the heating unit in the container. The regeneration section heats the absorbing liquid with the heating section while the partition plate is below the liquid level of the absorbing liquid, thereby diffusing the carbon dioxide from the absorbing liquid in the container.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the structure of the carbon-dioxide collection|recovery system of 1st Embodiment. FIG. 2 is a cross-sectional view showing the configuration of a reproducing section of the first embodiment; FIG. 5 is a plan view showing the shape of the partition plate of the first embodiment and its modification; FIG. 10 is a cross-sectional view showing the configuration of a reproducing unit of the second embodiment; FIG. 11 is a cross-sectional view showing the configuration of a reproducing unit according to a third embodiment; FIG. 12 is a cross-sectional view showing the configuration of a reproducing unit according to a fourth embodiment; FIG. 12 is a cross-sectional view showing the configuration of a reproducing unit of a modified example of the fourth embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 7, the same components are denoted by the same reference numerals, and duplicate descriptions are omitted.

(First embodiment)
FIG. 1 is a schematic diagram showing the configuration of the carbon dioxide recovery system of the first embodiment.

As shown in FIG. 1, the carbon dioxide recovery system of this embodiment includes a process exhaust gas line 1, an absorption section 2, a rich liquid pump 3, a regeneration heat exchanger 4, a regeneration section 5, and a lean liquid pump 6. , a lean liquid cooler 7 , a gas cooler 8 , and a controller 9 .

FIG. 1 shows an X direction and a Y direction that are parallel to and perpendicular to the installation surface of the absorption unit 2 and the regeneration unit 5 and a Z direction that is perpendicular to the installation surface of the absorption unit 2 and the regeneration unit 5 . In this specification, the +Z direction is treated as the upward direction, and the −Z direction is treated as the downward direction when describing the structures of the absorption unit 2 and the regeneration unit 5, for example. Note that the -Z direction may or may not match the direction of gravity.

The process exhaust gas line 1 is a flow path for supplying process exhaust gas such as combustion exhaust gas into the absorbing section 2 . Process exhaust gas is supplied to the carbon dioxide capture system from, for example, thermal power plants, steel mills, incineration plants, factory equipment, and the like. A process exhaust gas is an example of a target gas that is treated by a carbon dioxide recovery system.

The absorption section 2 is, for example, an absorption tower composed of a countercurrent gas-liquid contactor. The absorption section 2 has a gas introduction port for introducing the process exhaust gas in the lower portion of the absorption section 2 and an absorption liquid introduction port for introducing the absorption liquid (lean liquid) in the upper portion of the absorption section 2 . Examples of absorption liquids are aqueous amine-based solutions containing one or more amines. Examples of amines are monoethanolamine and diethanolamine.

The absorption part 2 brings the process exhaust gas and the absorbing liquid into gas-liquid contact to absorb the carbon dioxide in the process exhaust gas into the absorbing liquid. As a result, the absorbing liquid (rich liquid) that has absorbed carbon dioxide accumulates at the bottom of the absorbing section 2 . This rich liquid is discharged to the outside from an absorbent discharge port provided at the bottom of the absorbent section 2 . On the other hand, the absorption section exhaust gas containing the process exhaust gas from which carbon dioxide has been removed is discharged to the outside from a gas discharge port provided at the top of the absorption section 2 . The absorbent part 2 of the present embodiment has a structure in which one or more stages of packings or trays are arranged in order to promote gas-liquid contact efficiently.

The absorbent (rich liquid) discharged from the absorbent discharge port of the absorption section 2 is transferred to the regeneration section 5 via the regeneration heat exchanger 4 by the rich liquid pump 3 . At this time, the absorbent flowing from the absorption section 2 to the regeneration section 5 is heated by heat exchange in the regeneration heat exchanger 4 .

The regeneration unit 5 heats the absorbing liquid introduced from the absorbing unit 2 to dissipate most of the carbon dioxide from the absorbing liquid together with the vapor, thereby separating the carbon dioxide from the absorbing liquid. The heating section of the regeneration section 5 directly heats the absorbing liquid or indirectly heats the absorbing liquid through a medium such as oil. When the heating unit is an electric heater, it is preferable to use a flange heater as the electric heater. As an electric heater, a screw-in heater, a cylindrical heater, or a coil-shaped immersion heater may be used instead. Also, the energy source of the heating unit may be other than electricity, such as high-temperature steam. Further details of the reproducing unit 5 of the present embodiment will be described later.

The regeneration unit 5 discharges to the outside an absorption liquid (lean liquid) from which carbon dioxide and steam have been diffused, and a regeneration unit exhaust gas containing carbon dioxide and steam diffused from the absorption liquid. For example, this lean liquid is discharged from an absorbent discharge port provided at the bottom of the regeneration section 5 , and the regeneration section exhaust gas is discharged from a gas discharge port provided at the top of the regeneration section 5 .

The absorbent (lean liquid) discharged from the absorbent outlet of the regeneration unit 5 is returned to the absorption unit 2 via the regeneration heat exchanger 4 and the lean liquid cooler 7 by the lean liquid pump 6 . At this time, the absorbent flowing from the regeneration section 5 to the absorption section 2 is adjusted to a predetermined temperature by heat exchange in the regeneration heat exchanger 4 and cooling in the lean liquid cooler 7 . On the other hand, the regeneration unit exhaust gas discharged from the gas exhaust port of the regeneration unit 5 is cooled to an arbitrary temperature by the gas cooler 8 .

The control unit 9 controls various operations of the carbon dioxide recovery system. Examples of the control unit 9 are processors, electrical circuits, computers and the like. The control unit 9 controls, for example, the rotational speeds of the rich liquid pump 3 and the lean liquid pump 6, the cooling operation of the lean liquid cooler 7 and the gas cooler 8, the heating operation of the heating unit of the regeneration unit 5, and the like.

FIG. 2 is a cross-sectional view showing the configuration of the reproducing section 5 of the first embodiment. FIG. 2(a) shows an XZ cross section of the reproducing unit 5. FIG. FIG. 2(b) shows a YZ cross section of the reproducing unit 5, and shows a cross section along line A in FIG. 2(a).

The regeneration section 5 of the present embodiment includes a container 11, an electric heater 12, a baffle plate 13, and a partition plate 14, as shown in FIGS. 2(a) and 2(b). The electric heater 12 is an example of a heating section. The container 11 has an absorbent supply port 11a, an absorbent outlet 11b, and a gas outlet 11c. The electric heater 12 includes a plurality of U-shaped tubes 12a and a base portion 12b to which the U-shaped tubes 12a are attached. The regeneration unit 5 of this embodiment has a structure similar to that of a flash drum, flash tank, gas-liquid separation tank, or the like.

The container 11 stores the absorbent (rich liquid) supplied from the absorbent section 2 through the absorbent supply port 11a. A symbol S indicates the liquid surface of the absorbent contained in the container 11 . The regeneration unit 5 heats the absorbing liquid in the container 11 with the electric heater 12 to diffuse carbon dioxide (and steam; the same applies hereinafter) from the absorbing liquid. Symbol G indicates bubbles containing carbon dioxide diffused from the absorption liquid. The absorbing liquid (lean liquid) from which carbon dioxide has been diffused is discharged to the outside from the absorbing liquid discharge port 11b. On the other hand, the regeneration unit exhaust gas containing carbon dioxide diffused from the absorbing liquid is discharged to the outside from the gas discharge port 11c. The regeneration unit 5 of this embodiment includes an absorbent supply port 11 a and an absorbent outlet 11 b at the bottom of the container 11 and a gas outlet 11 c at the top of the container 11 .

The electric heater 12 is inserted into the container 11 and has a rod-like shape extending in the X direction. Specifically, a plurality of U-shaped tubes 12 a constituting the electric heater 12 are installed inside the container 11 . FIGS. 2(a) and 2(b) show the U-tube 12a submerged in the absorbent in the container 11 and positioned below the liquid surface S of the absorbent. The regeneration unit 5 of the present embodiment operates the electric heater 12 immersed in the absorbent in the container 11 to heat the absorbent in the container 11 through the U-shaped tube 12a.

The electric heater 12 of this embodiment has a shape extending from a first end (left end) in the -X direction to a second end (right end) in the +X direction. In this embodiment, the absorbent supply port 11 a is provided near the first end of the electric heater 12 , and the absorbent outlet 11 b is provided near the second end of the electric heater 12 . At the first end of the electric heater 12, a plurality of U-shaped tubes 12a are attached to the base portion 12b. On the other hand, the second end of the electric heater 12 faces the baffle plate 13 inside the container 11 .

The electric heater 12 of this embodiment directly or indirectly heats the absorbent in the container 11 by Joule heat. In the former case, for example, a member such as a coil that generates Joule heat is arranged inside the U-shaped tube 12a. In the latter case, for example, a medium such as oil or steam heated by Joule heat passes through the U-tube 12a.

The baffle plate 13 is installed on the side (+X direction) of the electric heater 12 inside the container 11 . The partition plate 14 is installed above the electric heater 12 (+Z direction) inside the container 11 . The baffle plate 13 and partition plate 14 may be made of the same material, or may be made of different materials. The baffle plate 13 is installed vertically, and the partition plate 14 is installed horizontally. The baffle plate 13 and the partition plate 14 of this embodiment are connected to each other and are in contact with the container 11 . As a result, the space in the container 11 is partitioned by the baffle plate 13 and the partition plate 14 into a first space on the side of the absorbent supply port 11a and a second space on the side of the absorbent outlet 11b and the gas outlet 11c. ing.

However, the partition plate 14 has one or more openings through which the absorbing liquid and air bubbles G in the container 11 pass. Therefore, the absorbent flowing into the container 11 from the absorbent supply port 11 a can reach the absorbent outlet 11 b through the opening of the partition plate 14 . Also, the air bubbles G generated in the first space can move to the second space through the opening of the partition plate 14 and reach the gas discharge port 11c. However, some of the bubbles G may be generated in the second space instead of the first space. The baffle plate 13 of this embodiment does not have an opening through which the absorbing liquid and the air bubbles G in the container 11 pass.

FIG. 3 is a plan view showing the shape of the partition plate 14 of the first embodiment and its modification.

FIG. 3(a) shows the partition plate 14 of this embodiment. The partition plate 14 has a region R1 provided with a plurality of openings P1 and a region R2 not provided with these openings P1. The partition plate 14 is produced, for example, by punching holes in a plate. The partition plate 14 is desirably arranged so that the region R2 is located directly above the absorbent supply port 11a. Alternatively, the region R2 may have an opening P1 with an aperture ratio lower than that of the region R1 instead of not having the opening P1.

FIG. 3(b) shows a partition plate 14 of a modified example of this embodiment. This partition plate 14 has a region R3 provided with a plurality of openings P2 and a region R4 not provided with these openings P2. The partition plate 14 is a plate processed into a net shape. The partition plate 14 is desirably arranged so that the region R4 is located directly above the absorbent supply port 11a. Alternatively, the region R4 may have an opening P2 with an aperture ratio lower than that of the region R3 instead of not having the opening P2.

Hereinafter, the configuration of the reproducing unit 5 will be further described with reference to FIGS. 2(a) and 2(b) again.

The regeneration section 5 of this embodiment operates in a state where the partition plate 14 and the baffle plate 13 are below the liquid surface S of the absorbent. 2(a) and 2(b) show the partition plate 14 positioned between the upper end of the electric heater 12 and the liquid surface S of the absorbing liquid. The regeneration unit 5 heats the absorbent with the electric heater 12 while the partition plate 14 and the baffle plate 13 are below the liquid surface S of the absorbent, thereby diffusing carbon dioxide from the absorbent in the container 11 . Further details of the operation of the reproducing unit 5 will be described below.

The absorbing liquid (rich liquid) flowing into the container 11 from the absorbing liquid supply port 11a flows upward toward the liquid surface S due to the upward flow caused by the heating of the electric heater 12, but the flow is changed by the partition plate 14. . As a result, the absorbent flows along the outer circumference of the electric heater 12 and the inner circumference of the container 11 . Further, since the container 11 has the absorbent discharge port 11b on the opposite side of the absorbent supply port 11a, the absorbent in the container 11 further flows from the absorbent supply port 11a toward the absorbent discharge port 11b. It is formed. These two flows are synthesized, and the absorbent flows in a spiral manner within the container 11 from the absorbent supply port 11a toward the absorbent outlet 11b as shown in FIGS. 2(a) and 2(b). (See symbol F1). That is, the absorbing liquid spirally flows from the first end (left end) side of the electric heater 12 to the second end (right end) side. As a result, the absorbent is evenly heated by the electric heater 12 .

The absorbing liquid flowing like symbol F1 reaches the vicinity of the baffle plate 13 . The baffle plate 13 has the function of blocking the flow of the absorbent, and changes the direction of the flow of the absorbent. Specifically, the direction of the absorbing liquid that has reached the vicinity of the baffle plate 13 changes upward or changes to return to the electric heater 12 . Due to the effect of this baffle plate 13, it becomes possible to heat the absorbing liquid in the vicinity of the electric heater 12 more uniformly. The baffle plate 13 functions as a "dam" that blocks the flow of the absorbent.

On the other hand, bubbles G generated in the process of heating the absorbent by the electric heater 12 pass through the opening of the partition plate 14 . As a result, it is possible to prevent the bubbles G from remaining on the contact surface between the electric heater 12 and the absorbent, and to prevent the bubbles G from interfering with the heating of the absorbent by the electric heater 12 . Since the electric heater 12 of this embodiment is surrounded by the partition plate 14 and the baffle plate 13 in the container 11, the absorbent flows around the electric heater 12 while being uniformly heated, and bubbles G generated from the absorbent are generated. escapes from the liquid surface S to the gas outlet 11c. Similarly, the absorbing liquid (lean liquid) that has diffused carbon dioxide passes through the opening of the partition plate 14 toward the absorbing liquid discharge port 11b (see symbol F2), and is discharged to the outside from the absorbing liquid discharge port 11b.

The partition plate 14 of the present embodiment preferably has one or more openings through which the absorbent and the air bubbles G pass, and has the function of returning the absorbent that has risen up to the partition plate 14 to the electric heater 12 . Therefore, the partition plate 14 of the present embodiment is desirably configured so that the area having these openings has an opening ratio of 10 to 90% (eg, 30 to 50%). Examples of such regions are region R1 in FIG. 3(a) and region R3 in FIG. 3(b). The aperture ratio of the region R1 and the aperture ratio of the region R3 are preferably 10 to 90%. The aperture ratio of the region of the partition plate 14 shown in FIGS. 2(a) and 2(b) is, for example, 40%.

The shape of the opening of the partition plate 14 may be any shape. Examples of the shape of the opening are circular, square, mesh-like, and the like. The region R1 in FIG. 3A may have the openings P1 at a uniform density or at a non-uniform density. Similarly, region R3 in FIG. 3B may have openings P2 at a uniform density or at non-uniform density.

As described above, the regeneration unit 5 of this embodiment includes the partition plate 14 having one or more openings above the electric heater 12 . Further, the regeneration unit 5 of the present embodiment heats the absorbent with the electric heater 12 while the partition plate 14 is below the liquid surface S of the absorbent, thereby diffusing carbon dioxide from the absorbent in the container 11. . This makes it possible to uniformly and efficiently heat the absorbent supplied into the regeneration unit 5 . Therefore, according to the present embodiment, it is possible to realize the regeneration section 5 having excellent heating efficiency of the absorbent, and to improve the carbon dioxide recovery performance of the carbon dioxide recovery system.

(Second embodiment)
FIG. 4 is a cross-sectional view showing the configuration of the reproducing section 5 of the second embodiment. The regeneration unit 5 of the second embodiment is provided in the carbon dioxide recovery system of FIG. FIG. 4(a) shows the XZ cross section of the reproducing unit 5. FIG. FIG. 4(b) shows a YZ cross section of the reproducing unit 5, and shows a cross section along line B in FIG. 4(a).

The regeneration unit 5 of the present embodiment includes a container 11, an electric heater 12, a baffle plate 13, and a partition plate 14, like the regeneration unit 5 of the first embodiment. However, as shown in FIG. 4B, the partition plate 14 of this embodiment has a convexly curved shape in the direction away from the electric heater 12, that is, convexly curved in the +Z direction. have a shape. According to the present embodiment, the curved partition plate 14 makes it easier for the absorbing liquid to flow along the periphery of the electric heater 12, making it possible to heat the absorbing liquid more uniformly and efficiently.

The optimum curvature and shape of the partition plate 14 can be arbitrarily selected according to the shape, arrangement and size of the electric heater 12, the size of the container 11, and the like. Examples of the shape of the YZ cross section of the partition plate 14 are semicircular, semielliptical, arched, and the like.

(Third Embodiment)
FIG. 5 is a cross-sectional view showing the configuration of the reproducing section 5 of the third embodiment. The regeneration unit 5 of the third embodiment is provided in the carbon dioxide recovery system of FIG.

Similar to the regeneration unit 5 of the first embodiment, the regeneration unit 5 of the present embodiment includes a container 11, an electric heater 12, a baffle plate 13, and a partition plate 14, and further includes one or more A baffle plate 15 is provided.

The baffle plate 15 is installed under the partition plate 14 inside the container 11 and is installed at a position between the first end (left end) and the second end (right end) of the electric heater 12 . The baffle plate 15 may be made of the same material as the baffle plate 13 and the partition plate 14, or may be made of a different material. The baffle plate 15 is installed vertically like the baffle plate 13 . Further, like the baffle plate 13, the baffle plate 15 of this embodiment does not have an opening through which the absorbing liquid and the air bubbles G in the container 11 pass.

A baffle plate 15 restricts the flow of absorbent around the electric heater 12 . Therefore, the absorbent near the electric heater 12 flows meanderingly with respect to the electric heater 12, as indicated by symbol F1 in FIG. As a result, the contact time between the electric heater 12 and the absorbent can be lengthened, and the absorbent can be sufficiently heated to diffuse carbon dioxide.

Each baffle plate 15 has a function of blocking the flow of the absorbent, and changes the direction of the flow of the absorbent. Specifically, the direction of the absorbing liquid that has reached the vicinity of each baffle plate 15 changes upward, downward, or changes back to the -X direction. Each baffle plate 15 functions as a "dam" that blocks the flow of the absorbent.

It should be noted that the baffle plate 15 only needs to be able to change the flow of the absorbent, and the shape, location and number of the baffle plate 15 are not limited to those shown in FIG.

(Fourth embodiment)
FIG. 6 is a cross-sectional view showing the configuration of the reproducing section 5 of the fourth embodiment. The regeneration unit 5 of the fourth embodiment is provided in the carbon dioxide recovery system of FIG. FIG. 6(a) shows the XZ cross section of the reproducing unit 5. FIG. FIG. 6(b) shows the YZ cross section of the reproducing unit 5, and shows the cross section along the line C in FIG. 6(a). FIG. 6(c) shows the YZ cross section of the reproducing unit 5, and shows the cross section along the line D in FIG. 6(a).

The regeneration unit 5 of the present embodiment includes a container 11, a baffle plate 13, and a partition plate 14, like the regeneration unit 5 of the first embodiment. While the regeneration unit 5 of the first embodiment has one electric heater 12 , the regeneration unit 5 of the present embodiment has a plurality of (here, two) electric heaters 12 .

Each electric heater 12 of this embodiment includes a plurality of U-shaped tubes 12a and a base portion 12b to which these U-shaped tubes 12a are attached, similarly to the electric heater 12 of the first embodiment. It has an elongated bar shape. The two electric heaters 12 of this embodiment extend in the same direction and are laterally aligned with each other as shown in FIGS. 6(b) and 6(c).

In this embodiment, as in the first embodiment, the upward flow of the absorbing liquid and the flow in the +X direction are combined to form a spiral flow around each electric heater 12 . As a result, the absorbent can be uniformly and efficiently heated by the two electric heaters 12, and the carbon dioxide recovery performance of the carbon dioxide recovery system can be improved.

Note that the reproducing unit 5 of the present embodiment may include three or more electric heaters 12, and any two of these electric heaters 12 may be arranged horizontally or vertically. may be lined up. Further, the regeneration unit 5 of the present embodiment may have a plurality of absorbent supply ports 11 a in the container 11 .

FIG. 7 is a cross-sectional view showing the configuration of the reproducing section 5 of the modified example of the fourth embodiment.

The reproducing unit 5 of this modification includes two electric heaters 12 arranged in the vertical direction, and a partition plate 16 between the electric heaters 12 . The partition plate 16 has the same shape as the partition plate 14, and has one or more openings through which the absorbing liquid and the air bubbles G pass. Thereby, a spiral flow can be generated in the space under the partition plate 16 and the space between the partition plate 14 and the partition plate 16 . Note that the reproducing unit 5 of this modified example may include three or more electric heaters 12 and two or more partition plates 16 .

Although several embodiments have been described above, these embodiments are presented by way of example only and are not intended to limit the scope of the invention. The novel systems and methods described herein can be embodied in various other forms. Also, various omissions, substitutions, and modifications may be made to the aspects of the systems and methods described herein without departing from the spirit of the invention. The appended claims and their equivalents are intended to cover such forms and modifications as fall within the scope and spirit of the invention.

1: Process exhaust gas line, 2: Absorber, 3: Rich liquid pump,
4: regenerative heat exchanger, 5: regeneration unit, 6: lean liquid pump,
7: lean liquid cooler, 8: gas cooler, 9: control unit,
11: container, 11a: absorbent supply port, 11b: absorbent outlet, 11c: gas outlet,
12: electric heater, 12a: U-shaped tube, 12b: base portion,
13: baffle plate, 14: partition plate, 15: baffle plate, 16: partition plate

Claims (7)

an absorption unit that brings a gas to be treated containing carbon dioxide into contact with an absorption liquid, and discharges the absorption liquid that has absorbed the carbon dioxide and an absorption unit exhaust gas that contains the gas to be treated from which the carbon dioxide has been removed; ,
regeneration in which the carbon dioxide is diffused from the absorption liquid discharged from the absorption part, and the absorption liquid in which the carbon dioxide has been diffused and the regeneration part exhaust gas containing the carbon dioxide diffused from the absorption liquid are discharged. and
The playback unit
a container for containing the absorbent discharged from the absorbent;
a heating portion provided within the container and having a shape extending from a first end to a second end ;
a partition plate having one or more openings through which the absorbing liquid in the container passes and provided above the heating unit in the container ;
provided at a position facing the second end of the heating unit, coupled to the partition plate, and in a direction of flow of the absorbent flowing in the container from the first end side to the second end side and a baffle that changes the
The container includes an absorbent supply port for supplying the absorbent discharged from the absorption section into the container, and an absorbent drain for discharging the absorbent that has passed through the opening of the partition plate to the outside of the container. An outlet and a gas outlet for discharging gas outside the container,
The regenerating section heats the absorbing liquid with the heating section in a state where the partition plate is below the liquid surface of the absorbing liquid. However, the flow is changed by the partition plate, and the flow of the absorbent flowing from the absorbent supply port to the absorbent outlet is formed in the container, and the absorbent in the container the absorbing liquid spirally flows from the first end to the second end side to dissipate the carbon dioxide from the absorbing liquid in the container ;
The container dissipates the carbon dioxide and discharges the absorbent that has passed through the opening of the partition plate from the absorbent discharge port, and the carbon dioxide dissipated from the absorbent is discharged from the gas. discharged from the outlet,
Carbon dioxide capture system. 2. The carbon dioxide recovery system according to claim 1 , wherein the partition plate is configured such that the area having the one or more openings has an opening ratio of 10 to 90%. 3. The carbon dioxide recovery system according to claim 1 , wherein said partition plate has a convexly curved shape in a direction away from said heating unit. The regeneration section is further provided at a position between the first end and the second end, and is configured to control the direction of flow of the absorbent liquid flowing in the container from the first end side to the second end side. 4. A carbon dioxide recovery system according to any one of claims 1 to 3 , comprising one or more additional baffles that change. 5. The carbon dioxide recovery system according to any one of claims 1 to 4 , wherein the regeneration unit includes, as the heating units, a plurality of heating units having shapes extending in the same direction. 6. The carbon dioxide recovery system according to claim 5 , wherein said regeneration section further comprises a partition plate provided between said plurality of heating sections and having one or more openings through which said absorbent passes. an absorption unit that brings a gas to be treated containing carbon dioxide into contact with an absorption liquid, and discharges the absorption liquid that has absorbed the carbon dioxide and an absorption unit exhaust gas that contains the gas to be treated from which the carbon dioxide has been removed; ,
regeneration in which the carbon dioxide is diffused from the absorption liquid discharged from the absorption part, and the absorption liquid in which the carbon dioxide has been diffused and the regeneration part exhaust gas containing the carbon dioxide diffused from the absorption liquid are discharged. Department and
A method of operating a carbon dioxide capture system comprising
The playback unit
a container for containing the absorbent discharged from the absorbent;
a heating portion provided within the container and having a shape extending from a first end to a second end ;
a partition plate having one or more openings through which the absorbing liquid in the container passes and provided above the heating unit in the container ;
provided at a position facing the second end of the heating unit, coupled to the partition plate, and in a direction of flow of the absorbent flowing in the container from the first end side to the second end side and a baffle that changes the
The container includes an absorbent supply port for supplying the absorbent discharged from the absorption section into the container, and an absorbent drain for discharging the absorbent that has passed through the opening of the partition plate to the outside of the container. An outlet and a gas outlet for discharging gas outside the container,
accommodating the absorbent discharged from the absorbing part into the container from the absorbent supply port ;
By heating the absorbing liquid with the heating unit in a state where the partition plate is below the liquid surface of the absorbing liquid, a flow of the absorbing liquid toward the liquid surface is formed in the container by an upward flow. The flow is changed by the partition plate, the flow of the absorbent is formed in the container from the absorbent supply port to the absorbent discharge port, and the absorbent flows in the container in the second direction. spirally flowing from one end to the second end side to dissipate the carbon dioxide from the absorption liquid in the container ;
The absorbent that diffuses the carbon dioxide and has passed through the opening of the partition plate is discharged from the absorbent discharge port, and the carbon dioxide that has been diffused from the absorbent is discharged from the gas discharge port. do,
A method of operating a carbon capture system comprising:

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