A carbon capture and absorption tower with a cavity cooling packing layer

Abstract

This invention relates to the field of carbon capture equipment technology, specifically to a carbon capture and absorption tower with a cavity cooling packing layer, comprising: a tower body, the top of which is provided with a lean liquid inlet and a flue gas outlet, and the bottom of which is provided with a rich liquid outlet and a flue gas inlet, the lean liquid inlet being connected to a lean liquid pipeline, and the rich liquid outlet being connected to a rich liquid pipeline; a cavity cooling packing layer disposed in multiple cavities of the tower body, the cavity cooling packing layer being connected to a cooling water system, the cooling water system being used to reduce the temperature of the lean liquid and flue gas, the lean liquid and flue gas passing through the cavity cooling packing layer and reacting in the middle cavity of the tower body, the lean liquid absorbing carbon dioxide from the flue gas to become rich liquid, and flowing out through the rich liquid outlet, the reacted flue gas being discharged through the flue gas outlet.

Description

Technical Field

[0001] This invention relates to the field of carbon capture equipment technology, and specifically to a carbon capture and absorption tower with a cavity cooling packing layer. Background Technology

[0002] Chemical absorption is currently the most widely used wet carbon capture technology, and amine absorbents are the most widely used chemical absorbents in this process. The core reaction within the carbon capture absorption tower is a reversible chemical reaction between the amine solvent and CO2 in the flue gas, typically occurring between 40°C and 60°C. Since the absorption reaction is exothermic, increasing the temperature shifts the equilibrium towards endothermic conditions, resulting in a still high CO2 concentration in the outlet flue gas and a decrease in capture efficiency. Furthermore, excessively high temperatures accelerate solvent degradation and volatilization. Therefore, to ensure that the flue gas and lean liquor entering the absorption tower are within a suitable temperature range, cooling treatment is usually necessary.

[0003] In existing technologies, pretreatment towers (such as desulfurization towers) are generally used to pretreat flue gas. However, some industries do not have wet pretreatment towers or the temperature of the pretreated flue gas is still high, requiring the installation of additional flue gas heat exchange devices (such as cooling spray towers, flue gas heat exchangers, etc.) to cool the flue gas. Meanwhile, the high-temperature lean liquor exiting the carbon capture system's desorption tower generally needs to be cooled by a lean-rich liquor heat exchanger and an additional cooler before entering the absorption tower. However, adding these devices is not only costly but may also occupy a significant amount of space. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the addition of an extra flue gas heat exchange device in the prior art leads to high cost and large space occupation, thereby providing a carbon capture and absorption tower with a cavity cooling packing layer.

[0005] To address the aforementioned technical problems, this invention provides a carbon capture and absorption tower with a cavity cooling packing layer, comprising: a tower body, wherein the top of the tower body is provided with a lean liquid inlet and a flue gas outlet, and the bottom of the tower body is provided with a rich liquid outlet and a flue gas inlet, the lean liquid inlet being connected to a lean liquid pipeline, and the rich liquid outlet being connected to a rich liquid pipeline; and a cavity cooling packing layer disposed within multiple cavities of the tower body, the cavity cooling packing layer being connected to a cooling water system, the cooling water system being used to reduce the temperature of the lean liquid and flue gas, the lean liquid and flue gas passing through the cavity cooling packing layer and reacting within the middle cavity of the tower body, the lean liquid absorbing carbon dioxide from the flue gas becoming rich liquid, and flowing out through the rich liquid outlet, and the reacted flue gas being discharged through the flue gas outlet.

[0006] Furthermore, the cavity cooling packing layer includes multiple corrugated cavity packing plates and cooling water channels. The cooling water channels are arranged between two adjacent corrugated cavity packing plates and at one end of the corrugated cavity packing plates in a serpentine arrangement. The corrugated cavity packing plates are connected to the cooling water system.

[0007] Furthermore, the corrugated cavity packing plate has a hollow structure, and the cooling water in the cooling system flows in from the corrugated cavity packing plate at the bottom of the cavity and flows out from the corrugated cavity packing plate at the top of the cavity.

[0008] Furthermore, the cooling water system includes a cooling water storage tank, cooling water pipelines, and a cooling water buffer tank. The cooling water storage tank is connected to the tower body and the cooling water buffer tank through the cooling water pipelines.

[0009] Furthermore, the cooling water system also includes a cooling water makeup tank, which is connected to the cooling water storage tank.

[0010] Furthermore, an inlet pump is provided between the cooling water storage tank and the tower body, and a return pump is provided between the cooling water buffer tank and the cooling water storage tank.

[0011] Furthermore, the cooling water storage tank is equipped with a level gauge and a thermometer.

[0012] Furthermore, the cavity is provided with a first liquid distributor and a first liquid collector, a second liquid distributor and a second liquid collector. The first liquid distributor and the first liquid collector are located in the bottom cavity of the tower body. The first lean liquid branch is connected to the second liquid distributor. The second liquid distributor and the second liquid collector are located in the middle cavity of the tower body.

[0013] Furthermore, it also includes a lean liquor spray layer, which is located in the top cavity of the tower body, and the second lean liquor branch is connected to the lean liquor spray layer.

[0014] Furthermore, a demister is provided at the top of the tower body, and the demister is located near the flue gas outlet.

[0015] The technical solution of this invention has the following advantages: 1. The carbon capture and absorption tower with a cavity cooling packing layer provided by the present invention includes: a tower body, wherein the top of the tower body is provided with a lean liquid inlet and a flue gas outlet, and the bottom of the tower body is provided with a rich liquid outlet and a flue gas inlet, wherein the lean liquid inlet is connected to a lean liquid pipeline, and the rich liquid outlet is connected to a rich liquid pipeline; a cavity cooling packing layer is disposed in multiple cavities of the tower body, the cavity cooling packing layer is connected to a cooling water system, the cooling water system is used to reduce the temperature of the lean liquid and the flue gas, the lean liquid and the flue gas pass through the cavity cooling packing layer and react in the middle cavity of the tower body, wherein the lean liquid absorbs carbon dioxide from the flue gas and becomes rich liquid, and flows out through the rich liquid outlet, and the reacted flue gas is discharged through the flue gas outlet.

[0016] The top of the tower has a lean liquid inlet and a flue gas outlet, while the bottom of the tower has a rich liquid outlet and a flue gas inlet. The tower has three cavities inside, each with a cavity cooling packing layer. It should be understood that the cavity cooling packing layer is located inside the absorption tower, which enables the flue gas and the absorption solution to come into full contact, increase the contact time and contact area, and maximize the absorption rate. The amine solution that has not yet absorbed carbon dioxide is called lean liquid, and the solution after absorbing carbon dioxide is called rich liquid. Lean liquid can also be called carbon capture and absorption solution.

[0017] Flue gas enters the tower body through the flue gas inlet, and lean liquor enters the tower body through the lean liquor inlet. The lean liquor flows from top to bottom and comes into countercurrent contact with the flue gas flowing from bottom to top in the cooling packing layer of the cavity, where they react. The rich liquor after the reaction flows out from the rich liquor outlet at the top of the tower, and the flue gas after the reaction flows out from the flue gas outlet at the top of the tower.

[0018] This carbon capture and absorption tower with a cavity cooling packing layer, through an improved design incorporating a cavity cooling packing layer, a cooling water system, and other highly integrated components, can effectively reduce the reaction temperature between the flue gas and the absorbent liquid entering the tower. This improves carbon capture and absorption efficiency while ensuring economy and space utilization, thereby reducing heat exchange costs.

[0019] 2. The carbon capture and absorption tower with a cavity cooling packing layer provided by the present invention includes a cooling water system comprising a cooling water storage tank, cooling water pipelines, and a cooling water buffer tank. The cooling water storage tank is connected to the tower body and the cooling water buffer tank via cooling water pipelines. Cooling water in the cooling water storage tank is transported to various cavities of the tower body, namely the bottom cavity, the middle cavity, and the top cavity, through the cooling water pipelines. Simultaneously, the cooled water can also be returned to the cooling water buffer tank for storage using the cooling water pipelines. The cooling water buffer tank serves to buffer the cooling water flowing out of the tower body.

[0020] 3. The carbon capture and absorption tower with a cavity cooling packing layer provided by the present invention includes an inlet pump between the cooling water storage tank and the tower body, and a return pump between the cooling water buffer tank and the cooling water storage tank. The inlet pump accelerates the entry of cooling water from the cooling water storage tank into the tower body; the return pump accelerates the flow of cooling water from the cooling water buffer tank into the cooling water storage tank.

[0021] The summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed description below. The summary section is not intended to identify essential or necessary features of this disclosure, nor is it intended to limit the scope of this disclosure. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of the carbon capture and absorption tower with a cavity cooling packing layer provided by the present invention; Figure 2 This is a front view of the cavity cooling packing layer provided by the present invention; Figure 3 A top view of the cavity cooling packing layer provided by the present invention.

[0024] Explanation of reference numerals in the attached figures: 1. Tower body; 1-1. Lean liquor inlet; 1-2. Flue gas outlet; 1-3. Rich liquor outlet; 1-4. Flue gas inlet; 2-1. First liquid distributor; 2-2. First liquid collector; 3-1. Second liquid distributor; 3-2. Second liquid collector; 4. Lean liquor pipeline; 4-1. Lean liquor pump; 4-2. Lean liquor valve; 4-3. First lean liquor branch; 4-4. Second lean liquor branch; 5. Lean liquor spray layer; 6. Demister; 7. Cooling water pipeline; 7-1. Water inlet 7-1 Pump; 7-2 Cooling water inlet; 7-3 Inlet branch; 7-4 Cooling water outlet; 7-5 Outlet branch; 7-6 Cooling water buffer tank; 7-7 Return water pump; 8 Cavity cooling packing layer; 8-1 Bottom cavity; 8-2 Middle cavity; 8-3 Top cavity; 8-4 Corrugated cavity packing plate; 8-5 Cooling water channel; 9 Cooling water makeup tank; 10 Cooling water storage tank; 11 Drain valve; 12 Level gauge; 13 Thermometer. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0026] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0027] Please see Figures 1 to 3 As shown, the present invention provides a carbon capture and absorption tower with a cavity cooling packing layer 8, comprising: a tower body 1, wherein the top of the tower body 1 is provided with a lean liquid inlet 1-1 and a flue gas outlet 1-2, and the bottom of the tower body 1 is provided with a rich liquid outlet 1-3 and a flue gas inlet 1-4, wherein the lean liquid inlet 1-1 is connected to a lean liquid pipeline 4, and the rich liquid outlet 1-3 is connected to a rich liquid pipeline; a cavity cooling packing layer 8 is disposed in multiple cavities of the tower body 1, the cavity cooling packing layer 8 is connected to a cooling water system, the cooling water system is used to reduce the temperature of the lean liquid and the flue gas, the lean liquid and the flue gas pass through the cavity cooling packing layer 8 and react in the middle cavity 8-2 of the tower body 1, wherein the lean liquid absorbs carbon dioxide from the flue gas and becomes rich liquid, and flows out through the rich liquid outlet 1-3, and the reacted flue gas is discharged through the flue gas outlet 1-2.

[0028] The top of the tower body 1 is provided with a lean liquid inlet 1-1 and a flue gas outlet 1-2, and the bottom of the tower body 1 is provided with a rich liquid outlet 1-3 and a flue gas inlet 1-4. The tower body 1 has three cavities inside, and each cavity is provided with a cavity cooling packing layer 8. It should be understood that the cavity cooling packing layer 8 is located inside the absorption tower, which can enable the flue gas and the absorption solution to fully contact, increase the contact time and contact area, and maximize the absorption rate. The alcohol amine solution that has not yet absorbed carbon dioxide is called lean liquid, and the solution after absorbing carbon dioxide is called rich liquid. Lean liquid can also be called carbon capture and absorption solution.

[0029] Flue gas enters tower body 1 through flue gas inlet 1-4, and lean liquor enters tower body 1 through lean liquor inlet 1-1. The lean liquor flows from top to bottom and comes into countercurrent contact with the flue gas flowing from bottom to top in the cooling packing layer 8 of the cavity, where it reacts. The rich liquor after the reaction flows out from the rich liquor outlet 1-3 at the top of the tower, and the flue gas after the reaction flows out from the flue gas outlet 1-2 at the top of the tower.

[0030] The carbon capture and absorption tower with cavity cooling packing layer 8, through an improved design incorporating cavity cooling packing layer 8, a cooling water system, and other highly integrated components, effectively reduces the reaction temperature between the flue gas and the absorbent liquid entering the tower body 1. This improves carbon capture and absorption efficiency while ensuring economy and space utilization, thereby reducing heat exchange costs. The cavity cooling packing layer 8 is arranged sequentially from bottom to top in the bottom cavity 8-1, middle cavity 8-2, and top cavity 8-3 of the tower body 1. Among them, the cavity cooling packing layer 8 in the bottom cavity 8-1 and the top cavity 8-3 mainly plays a cooling role to prevent the flue gas and lean liquid entering the tower body 1 from being too hot. The flue gas and absorbent mainly react in the middle cavity 8-2, and the cavity cooling packing layer 8 in the middle cavity 8-2 can also absorb the heat released during the reaction process.

[0031] In some optional embodiments, the cavity cooling packing layer 8 includes a plurality of corrugated cavity packing plates 8-4 and cooling water channels 8-5. The cooling water channels 8-5 are disposed between two adjacent corrugated cavity packing plates 8-4 and are located at one end of the corrugated cavity packing plate 8-4 and are arranged in a serpentine manner. The corrugated cavity packing plates 8-4 are connected to the cooling water system.

[0032] The corrugated cavity packing plate 8-4 is made of 316L stainless steel with a protective coating. 316L stainless steel is corrosion resistant, has a low cost, and good thermal conductivity.

[0033] The corrugated cavity packing plate 8-4 has a hollow structure. Cooling water in the cooling system flows in from the corrugated cavity packing plate 8-4 at the bottom of the cavity and flows out from the corrugated cavity packing plate 8-4 at the top of the cavity. This is used to reduce the temperature of the flue gas and lean liquor, and promote the reaction.

[0034] The lean liquor is an alkanolamine solution. The reaction between the alkanolamine solution and carbon dioxide is a reversible exothermic reaction. Increasing the temperature will shift the equilibrium towards the endothermic direction, resulting in a decrease in collection efficiency. Furthermore, the temperature of the flue gas and lean liquor entering the tower body 1 may be high in some cases, causing more adverse effects. The multiple corrugated cavity packing plates 8-4 are filled with cooling water, which can absorb heat in time before and during the reaction.

[0035] Adjacent corrugated cavity packing plates 8-4 are arranged in an alternating pattern according to the corrugation direction. Multiple corrugated cavity packing plates 8-4 are connected by internal cooling water channels 8-5. The bottom end of the outer corrugated cavity packing plate 8-4 is connected to the inlet pipe of the cooling water pipe 7, and the top end of the other corrugated cavity packing plate 8-4 is connected to the outlet pipe of the cooling water pipe 7.

[0036] Please see Figure 2 and Figure 3As shown, cooling water enters from the bottom of the rightmost corrugated cavity packing plate 8-4. After filling the corrugated cavity packing plate 8-4, the cooling water flows out from the top of the corrugated cavity packing plate 8-4. After passing through the internal cooling water channel 8-5, it enters from the top of the second corrugated cavity packing plate 8-4 on the right, and then flows out from the bottom of the corrugated cavity packing plate 8-4. After passing through the internal cooling water channel 8-5, it flows in from the front end of the bottom of the third corrugated cavity packing plate 8-4 on the right, and fills the corrugated cavity packing plate 8-4. Following this pattern, the cooling water passes through all the corrugated cavity packing plates 8-4 and finally flows out from the top of the leftmost corrugated cavity packing plate 8-4. This flow pattern has a good cooling effect on counter-current flue gas and lean liquid.

[0037] In some optional embodiments, the cooling water system includes a cooling water storage tank 10, a cooling water pipeline 7, and cooling water buffer tanks 7-6. The cooling water storage tank 10 is connected to the tower body 1 and the cooling water buffer tanks 7-6 via the cooling water pipeline 7.

[0038] Cooling water in the cooling water storage tank 10 is transported to various cavities of the tower body 1 through the cooling water pipeline 7, namely the bottom cavity 8-1, the middle cavity 8-2, and the top cavity 8-3. At the same time, the cooled water can also be returned to the cooling water buffer tank 7-6 for storage through the cooling water pipeline 7. The cooling water buffer tank 7-6 plays a buffering role for the cooling water flowing out of the tower body 1.

[0039] A water inlet pump 7-1 is provided between the cooling water storage tank 10 and the tower body 1, and a water return pump 7-7 is provided between the cooling water buffer tank 7-6 and the cooling water storage tank 10.

[0040] The inlet pump 7-1 can accelerate the flow of cooling water from the cooling water storage tank 10 into the tower body 1; the return pump 7-7 can accelerate the flow of cooling water from the cooling water buffer tank 7-6 into the cooling water storage tank 10.

[0041] The cooling water pipeline 7 is divided into three inlet branches 7-3 after passing through the inlet pump 7-1. The three inlet branches 7-3 pass through the three cooling water inlets 7-2 on the tower body 1 and enter the bottom cavity 8-1, the middle cavity 8-2 and the top cavity 8-3 respectively, and are connected to the lower end of the rightmost corrugated cavity packing plate 8-4. Then the cooling water flows into the corrugated cavity packing plate 8-4.

[0042] After passing through the three cooling water outlets 7-4 on the tower body 1, the cooling water outlet branch 7-5 is connected to the bottom cavity 8-1, the middle cavity 8-2 and the top cavity 8-3 respectively. The connection position is located at the upper end of the leftmost corrugated cavity packing plate 8-4. After the cooling water absorbs heat in the cavity cooling packing layer 8, it flows out through the outlet branch 7-5. The multiple outlet branches 7-5 finally converge into the cooling water pipeline 7, and are connected to the return water pump 7-7 before entering the outlet end.

[0043] The cooling water storage tank 10 is equipped with a level gauge 12 and a thermometer 13; the level gauge 12 and the thermometer 13 can monitor the water level and temperature in real time and adjust them accordingly.

[0044] The cooling water buffer tank 7-6 is equipped with a drain valve 11. The drain valve 11 can ensure the water volume in the cooling water buffer tank and, together with the level gauge 12 and the thermometer 13, can adjust the water volume in the cooling water storage tank 10 in real time.

[0045] In some optional embodiments, the cooling water system further includes a cooling water makeup tank 9, which is connected to the cooling water storage tank 10.

[0046] The cooling water replenishment tank 9 is connected to the cooling water storage tank 10 through the cooling water pipeline 7. By monitoring the water level or temperature information of the cooling water storage tank 10, cooling water is replenished to the cooling water storage tank 10 at any time.

[0047] In some optional embodiments, the cavity is provided with a first liquid distributor 2-1 and a first liquid collector 2-2, a second liquid distributor 3-1, and a second liquid collector 3-2. The first liquid distributor 2-1 and the first liquid collector 2-2 are located in the bottom cavity 8-1 of the tower body 1. The first lean liquid branch 4-3 is connected to the second liquid distributor 3-1. The second liquid distributor 3-1 and the second liquid collector 3-2 are located in the middle cavity 8-2 of the tower body 1.

[0048] The first liquid collector 2-2 or the second liquid collector 3-2 can effectively collect the lean liquid flowing down from above. The liquid collector is generally close to the liquid distributor and provides the collected liquid to the liquid distributor. The first liquid distributor 2-1 or the second liquid distributor 3-1 can evenly distribute the liquid on the top of the cavity cooling packing layer 8 or at a certain height, thereby improving the efficiency of mass transfer and heat transfer.

[0049] The first liquid collector 2-2 is closely attached to the first liquid distributor 2-1 and located above the first liquid distributor 2-1. The first liquid collector 2-2 and the first liquid distributor 2-1 are both located between the cavity cooling packing layer 8 of the bottom cavity 8-1 and the cavity cooling packing layer 8 of the middle cavity 8-2. The second liquid collector 3-2 is closely attached to the second liquid distributor 3-1 and located above the second liquid distributor 3-1. Both the second liquid collector 3-2 and the second liquid distributor 3-1 are located between the cavity cooling packing layer 8 of the middle cavity 8-2 and the cavity cooling packing layer 8 of the top cavity 8-3.

[0050] The carbon capture and absorption tower with cavity cooling packing layer 8 also includes a lean liquid spray layer 5, which is located in the top cavity 8-3 of the tower body 1. The second lean liquid branch 4-4 is connected to the lean liquid spray layer 5, that is, the lean liquid spray layer 5 is connected to the lean liquid inlet 1-1 of the second lean liquid branch 4-4.

[0051] After passing through the lean liquid pump 4-1, the lean liquid pipeline 4 passes through the lean liquid valve 4-2 and then splits into two branches; the first lean liquid branch 4-3 is connected to the second liquid distributor 3-1, and the second lean liquid branch 4-4 is connected to the lean liquid spray layer 5 through the lean liquid inlet 1-1. It should be understood that the liquid flow rate entering the lean liquid spray layer 5 through the second lean liquid branch 4-4 is greater than the liquid flow rate entering the second liquid distributor 3-1 through the first lean liquid branch 4-3. By diverting the lean liquid into different chambers to cool the packing layer 8, the reaction can be made more complete.

[0052] Specifically, a demister 6 is provided at the top of the tower body 1, and the demister 6 is located near the flue gas outlet 1-2. That is, it is located at the top of the tower body 1, near the flue gas outlet 1-2. The demister 6 can remove liquid droplets in the gas through physical separation, so that the liquid droplets in the flue gas are separated from the airflow.

[0053] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A carbon capture and absorption tower with a cavity cooling packing layer, characterized in that, include: The tower body (1) has a lean liquid inlet (1-1) and a flue gas outlet (1-2) at the top and a rich liquid outlet (1-3) and a flue gas inlet (1-4) at the bottom. The lean liquid inlet (1-1) is connected to the lean liquid pipeline (4) and the rich liquid outlet (1-3) is connected to the rich liquid pipeline. The cavity cooling packing layer (8) is located in multiple cavities of the tower body (1). The cavity cooling packing layer (8) is connected to the cooling water system. The cooling water system is used to reduce the temperature of lean liquid and flue gas. The lean liquid and flue gas pass through the cavity cooling packing layer (8) and react in the middle cavity (8-2) of the tower body (1). After the lean liquid absorbs carbon dioxide in the flue gas, it becomes rich liquid and flows out through the rich liquid outlet (1-3). The flue gas after the reaction is discharged from the flue gas outlet (1-2). The cavity cooling packing layer (8) includes multiple corrugated cavity packing plates (8-4) and cooling water channels (8-5). The cooling water channels (8-5) are located between two adjacent corrugated cavity packing plates (8-4) and at one end of the corrugated cavity packing plate (8-4), and are arranged in a serpentine pattern. The corrugated cavity packing plates (8-4) are connected to the cooling water system. The corrugated cavity packing plate (8-4) is a hollow structure. The cooling water in the cooling system flows in from the corrugated cavity packing plate (8-4) at the bottom of the cavity and flows out from the corrugated cavity packing plate (8-4) at the top of the cavity.

2. The carbon capture and absorption tower with a cavity cooling packing layer according to claim 1, characterized in that, The cooling water system includes a cooling water storage tank (10), cooling water pipelines (7), and a cooling water buffer tank (7-6). The cooling water storage tank (10) is connected to the tower body (1) and the cooling water buffer tank (7-6) through the cooling water pipelines (7).

3. The carbon capture and absorption tower with a cavity cooling packing layer according to claim 2, characterized in that, The cooling water system also includes a cooling water makeup tank (9), which is connected to a cooling water storage tank (10).

4. The carbon capture and absorption tower with a cavity cooling packing layer according to claim 3, characterized in that, A water inlet pump (7-1) is provided between the cooling water storage tank (10) and the tower body (1), and a water return pump (7-7) is provided between the cooling water buffer tank (7-6) and the cooling water storage tank (10).

5. The carbon capture and absorption tower with a cavity cooling packing layer according to claim 4, characterized in that, The cooling water storage tank (10) is equipped with a level gauge (12) and a thermometer (13).

6. The carbon capture and absorption tower with a cavity cooling packing layer according to claim 5, characterized in that, The cavity is equipped with a first liquid distributor (2-1) and a first liquid collector (2-2), a second liquid distributor (3-1), and a second liquid collector (3-2). The first liquid distributor (2-1) and the first liquid collector (2-2) are located in the bottom cavity (8-1) of the tower body (1). The first lean liquid branch (4-3) is connected to the second liquid distributor (3-1). The second liquid distributor (3-1) and the second liquid collector (3-2) are located in the middle cavity (8-2) of the tower body (1).

7. The carbon capture and absorption tower with a cavity cooling packing layer according to claim 6, characterized in that, It also includes a lean liquid spray layer (5), which is located in the top cavity (8-3) of the tower body (1), and the second lean liquid branch (4-4) is connected to the lean liquid spray layer (5).

8. The carbon capture and absorption tower with a cavity cooling packing layer according to claim 1, characterized in that, A demister (6) is provided at the top of the tower body (1), and the demister (6) is located near the flue gas outlet (1-2).

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