CN115814576A - Carbon capture absorption tower - Google Patents

Abstract

The invention discloses a carbon capture and absorption tower. The carbon capture and absorption tower includes a tower body, a first liquid distributor and a lean liquid pipeline. The bottom of the tower body has a smoke inlet, and the first liquid distributor is arranged in the tower body and Located above the flue gas inlet, the first liquid distributor is suitable for feeding the first absorbent rich in antioxidants, the first end of the lean liquid pipeline communicates with the peripheral wall of the tower body, and the second end of the lean liquid pipeline is installed with The lean liquid pump, the lean liquid pipeline is suitable for delivering the second absorbent capable of absorbing carbon dioxide in the flue gas. The carbon capture absorption tower provided by the invention has the advantages of less consumption of the second absorbent and higher carbon capture efficiency.

Description

Carbon capture absorber

technical field

The invention relates to the technical field of carbon capture, in particular to a carbon capture absorption tower.

Background technique

The chemical absorption method can adapt to the flue gas conditions of thermal power plants with large flow, low carbon dioxide concentration (3% to 15%), low partial pressure (near normal pressure) and certain pollutants. High, it is a relatively mature technology for carbon dioxide capture in thermal power plants, with the widest application range and commercial development prospects.

In related technologies, the carbon capture technology in the chemical absorption method mainly uses an organic amine solution as an absorbent. However, in the process of capturing carbon dioxide in the flue gas, the organic amine solution is easy to decompose, thus, the carbon capture technology in the related art has the disadvantage of large consumption of carbon dioxide absorbents.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, embodiments of the present invention propose a carbon capture absorption tower, which has the advantage of less consumption of the second absorbent.

The carbon capture absorption tower according to the embodiment of the present invention includes a tower body, a first liquid distributor and a lean liquid pipeline, the bottom of the tower body has a flue gas inlet; the first liquid distributor is arranged in the tower body and Located above the flue gas inlet, the first liquid distributor is suitable for passing through the first absorbent rich in antioxidants; the first end of the lean liquid pipeline communicates with the peripheral wall of the tower body, the A lean liquid pump is installed at the second end of the lean liquid pipeline, and the lean liquid pipeline is suitable for transporting a second absorbent capable of absorbing carbon dioxide in the flue gas.

According to the carbon capture absorption tower of the embodiment of the present invention, the flue gas enters the tower body through the flue gas inlet and flows upward, and the second absorbent enters the tower body through the lean liquid pipeline and flows downward under the action of gravity. Thus, the flue gas and the second absorbent meet in the tower body, and the second absorbent can absorb the carbon dioxide in the flue gas. At the same time, the first absorbent rich in antioxidant enters the tower body from the first liquid distributor and mixes with the second absorbent, which reduces the oxidative decomposition of the second absorbent. Thus, the failure of the second absorbent is alleviated, the absorption effect of the second absorbent on carbon dioxide is ensured, and the consumption of the second absorbent is reduced.

In some embodiments, it also includes a second liquid distributor and a third liquid distributor, the second liquid distributor is arranged in the tower body and is located above the first liquid distributor, the second liquid distributor The distributor is connected to the first end of the lean liquid pipeline through the peripheral wall of the tower body; the third liquid distributor is arranged in the tower body and above the second liquid distributor, and the third liquid distributor The liquid distributor is connected to the first end of the lean liquid pipeline through the peripheral wall of the tower body.

In some embodiments, the carbon capture absorption tower also includes a plurality of gas-liquid mass transfer components arranged in the tower body, and a plurality of the gas-liquid mass transfer components are located between the second liquid distributor and the The third liquid distributors are distributed at intervals in the height direction of the tower body; the gas-liquid mass transfer assembly includes a first packing layer and a liquid redistributor, and the first packing layer is located at the liquid redistribution Above the device and the first packing layer and the liquid redistributor are both connected to the tower body.

In some embodiments, the carbon capture absorption tower further includes an interstage cooler, and the interstage cooler is arranged in the tower body and located between any two adjacent gas-liquid mass transfer components.

In some embodiments, the interstage cooler includes a plurality of tube assemblies distributed at intervals in the height direction of the tower, and the tube assembly includes a first connecting tube, a single pipe and the second connecting pipe, the number of the single pipe is multiple and distributed at intervals in the radial direction of the tower body, the first ends of the multiple single pipes communicate with the first connecting pipe, and the multiple The second end of the single pipe is in communication with the second connecting pipe, and both the first connecting pipe and the second connecting pipe are connected with the inner peripheral wall of the tower body; any two adjacent tube assemblies Among them, the plurality of single pipes of one and the plurality of single pipes of the other are staggered in the radial direction of the tower body, and the first connecting pipe of one is provided with a water inlet, and The second connecting pipe is provided with a water outlet, the first connecting pipe of the other is provided with a water outlet, and the second connecting pipe is provided with a water inlet.

In some embodiments, the carbon capture absorption tower further includes a second packing layer and a gas-liquid uniform distribution plate, the second packing layer is arranged in the tower body and is located between the first liquid distributor and the second liquid distributor. Between the two liquid distributors; the gas-liquid uniform distribution plate is arranged in the tower body and is located below the first liquid distributor and above the flue gas inlet.

In some embodiments, the lean liquid pipeline includes a first pipeline, a second pipeline and a diverter valve, the first end of the first pipeline is connected to the second liquid distributor; the second The first end of the pipeline is connected to the third liquid distributor, the second end of the second pipeline is connected in parallel with the second end of the first pipeline, and the lean liquid pump is connected in series to the first A pipeline and the second end of the second pipeline; the diverter valve is installed on the first pipeline or the second pipeline.

In some embodiments, the carbon capture absorption tower also includes an inclined flue, the first end of the flue is connected to the flue gas inlet, and the second end of the flue is placed in the flue above the first end and is suitable for passing through the flue gas.

In some embodiments, the carbon capture absorption tower further includes a first mist eliminator, and the first mist eliminator is arranged in the tower body and above the third liquid distributor.

In some embodiments, the carbon capture absorption tower also includes a cooler, a liquid delivery pipeline, and a second demister, and the top of the tower body is provided with a flue gas outlet above the first demister, so The cooler is placed outside the tower body and has an air inlet for inputting flue gas, an air outlet for outputting flue gas, and a liquid discharge port for discharging the second absorbent in the flue gas. The mouth is connected with the flue gas outlet; the first end of the infusion pipeline is connected with the liquid outlet, and the second end of the infusion pipeline is placed in the tower body; the second demister and the The air outlet is connected.

Description of drawings

Fig. 1 is a schematic diagram of a carbon capture absorption tower according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a tube and tube assembly of a carbon capture absorption tower according to an embodiment of the present invention.

Fig. 3 is another schematic diagram of the tube and tube assembly of the carbon capture absorption tower according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of an interstage cooler of a carbon capture absorption tower according to an embodiment of the present invention.

Fig. 5 is a partial schematic diagram of a carbon capture absorption tower according to an embodiment of the present invention.

Reference signs: 1, tower body; 11, second packing layer; 12, gas-liquid uniform distribution plate; 2, first liquid distributor; 3, lean liquid pipeline; 31, second liquid distributor; 32, second Three liquid distributors; 33. First pipeline; 34. Second pipeline; 35. Diverter valve; 36. Lean liquid pump; 4. Gas-liquid mass transfer component; 41. First packing layer; 42. Liquid redistribution 5, interstage cooler; 51, tube assembly; 511, first connecting pipe; 512, single pipe; 513, second connecting pipe; 514, water inlet; 515, water outlet; 6, flue; 7 , the first demister; 8, the cooler; 81, the infusion pipeline; 9, the second demister.

Detailed ways

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

A carbon capture absorption tower according to an embodiment of the present invention is described below with reference to FIGS. 1-5 .

As shown in FIG. 1 , a carbon capture absorption tower according to an embodiment of the present invention includes a tower body 1 , a first liquid distributor 2 and a lean liquid pipeline 3 . There is a flue gas inlet at the bottom of the tower body 1 . The first liquid distributor 2 is arranged in the tower body 1 and located above the flue gas inlet, and the first liquid distributor 2 is suitable for feeding the first absorbent rich in antioxidant. The first end of the lean liquid pipeline 3 communicates with the peripheral wall of the tower body 1, the second end of the lean liquid pipeline 3 is equipped with a lean liquid pump 36, and the lean liquid pipeline 3 is suitable for transporting the second absorbent.

According to the carbon capture absorption tower of the embodiment of the present invention, the flue gas enters the tower body 1 from the flue gas inlet and flows upward, and the second absorbent enters the tower body 1 through the lean liquid pipeline 3 and flows downward under the action of gravity. As a result, the flue gas and the second absorbent meet in the tower body 1, and the second absorbent can absorb carbon dioxide in the flue gas. At the same time, the antioxidant-rich first absorbent enters the tower body 1 from the first liquid distributor 2 and mixes with the second absorbent, and the antioxidant in the antioxidant-rich first absorbent reduces the amount of the second absorbent. oxidative decomposition. Thus, the failure of the second absorbent is alleviated, the absorption effect of the second absorbent on carbon dioxide is ensured, and the consumption of the second absorbent is reduced.

Wherein, the first liquid distributor 2 is used to improve the uniformity of spraying the first absorbent rich in antioxidants in the tower body 1, thereby improving the mixing effect of the first absorbent rich in antioxidants and the second absorbent.

Wherein, the lean liquid pump 36 is used to drive the flow of the second absorbent in the lean liquid pipeline 3 .

Specifically, the second absorbent is an organic amine solution.

For ease of understanding, arrow A in Fig. 1 shows the up-down direction/height direction of the carbon capture absorption tower.

In some embodiments, as shown in Figure 1, the carbon capture absorption tower further includes a second liquid distributor 31 and a third liquid distributor 32, the second liquid distributor 31 is arranged in the tower body 1 and is located in the first liquid Above the distributor 2 , the second liquid distributor 31 is connected to the first end of the lean liquid pipeline 3 through the peripheral wall of the tower body 1 . The third liquid distributor 32 is arranged in the tower body 1 and above the second liquid distributor 31 , and the third liquid distributor 32 is connected to the first end of the lean liquid pipeline 3 through the peripheral wall of the tower body 1 .

Thus, the second absorbent input from the first end of the lean liquid pipeline 3 is divided into two paths. The first path of the second absorbent enters the tower body 1 through the third liquid distributor 32 and reacts with the flue gas. During the reaction process, the first path of the second absorbent exothermicly causes the temperature to rise. The second path of the second absorbent enters the tower body 1 through the second liquid distributor 31 and reacts with the flue gas. Since the third liquid distributor 32 is located above the second liquid distributor 31, the first liquid after reacting with the flue gas The first road second absorbent will be mixed with the unreacted second road second absorbent in the area where the second liquid distributor 31 is located, and the lower temperature second road second absorbent can reduce the temperature of the first road second absorbent , thereby increasing the absorption load of the second absorbent for carbon dioxide, thereby increasing the carbon capture efficiency.

In addition, the second liquid distributor 31 and the third liquid distributor 32 realize two-stage absorption of carbon dioxide in the flue gas, reduce the residual amount of carbon dioxide in the flue gas, and ensure the effect of carbon capture.

In some embodiments, as shown in FIG. 1 , the carbon capture absorption tower further includes a plurality of gas-liquid mass transfer components 4 arranged in the tower body 1 , and the plurality of gas-liquid mass transfer components 4 are located in the second liquid distributor 31 and the third liquid distributor 32 and distributed at intervals in the height direction of the tower body 1; the gas-liquid mass transfer assembly 4 includes a first packing layer 41 and a liquid redistributor 42, and the first packing layer 41 is located in the liquid redistributor 42 and the first packing layer 41 and the liquid redistributor 42 are connected to the tower body 1 .

As a result, the first path of the second absorbent and the flue gas that flow countercurrently contact each other closely in the first packing layer 41 and perform mass transfer. The first packing layer 41 is used to increase the contact area between the first second absorbent and the flue gas, increase the mass transfer coefficient, and accelerate the absorption rate of the first second absorbent for carbon dioxide in the flue gas.

The first path of the second absorbent passing through the first packing layer 41 will produce a wall flow effect, which will cause the droplet distribution to be no longer uniform, and the liquid redistributor 42 is used to rearrange the droplets of the first path of the second absorbent evenly , to ensure the gas-liquid mass transfer efficiency of the first second absorbent in the next first packing layer 41 .

Specifically, the liquid redistributor 42 may be of a grooved plate type or a non-overflow type.

Among them, since the non-overflow liquid redistributor 42 is easier to manufacture and install than the groove-disk liquid redistributor 42, and the equipment investment cost is lower, the liquid redistributor 42 in this embodiment is preferably non-overflow liquid redistributor 42. Distributor 42.

Specifically, there are two gas-liquid mass transfer components 4 .

In some embodiments, as shown in Figure 1, the carbon capture absorption tower further includes an interstage cooler 5, and the interstage cooler 5 is arranged in the tower body 1 and located between any two adjacent gas-liquid mass transfer components 4 between.

The interstage cooler 5 is used to reduce the temperature of the second absorbent in the first path and the flue gas, and at the same time make the temperature of the second absorbent in the first path and the flue gas substantially the same. As a result, the capacity and absorption load of the first path of the second absorbent for carbon dioxide in the flue gas are further improved, thereby improving the carbon capture efficiency.

In some embodiments, as shown in FIGS. 2-4 , the interstage cooler 5 includes a plurality of tube assemblies 51 , and the plurality of tube assemblies 51 are distributed at intervals in the height direction of the tower body 1 , and the tube assemblies 51 include The first connecting pipe 511, the single pipe 512 and the second connecting pipe 513, the number of the single pipe 512 is multiple and distributed at intervals in the radial direction of the tower body 1, the first end of the multiple single pipe 512 and the first connecting pipe 511 The second ends of the plurality of single pipes 512 communicate with the second connecting pipe 513 , and both the first connecting pipe 511 and the second connecting pipe 513 are connected with the inner peripheral wall of the tower body 1 . In any two adjacent tube assemblies 51, the multiple single tubes 512 of one and the multiple single tubes 512 of the other are staggered in the radial direction of the tower body 1, and the first connecting tube 511 of one is provided with The water inlet 514 and the second connecting pipe 513 are provided with a water outlet 515 , the first connecting pipe 511 of the other is provided with a water outlet 515 , and the second connecting pipe 513 is provided with a water inlet 514 .

The staggered arrangement of the single tubes 512 in two adjacent tube array assemblies 51 ensures the uniformity of heat exchange between the interstage cooler 5 and the flue gas and the second absorbent in the first path, thus speeding up the heat exchange between the flue gas and the first path and the second absorbent. Second, the cooling of the absorbent. The positions of the water inlet 514 and the water outlet 515 in the two adjacent tube assemblies 51 are opposite, which ensures the consistency of the temperature of the flue gas after heat exchange and the second absorbent of the first path.

Multiple tube assemblies 51 distributed at intervals realize multi-stage cooling of the flue gas and the first second absorbent, ensuring the cooling effect of the flue gas and the first second absorbent, while increasing the gas-liquid contact area , improve the gas-liquid mass transfer efficiency, and enhance the absorption effect of the second absorbent for carbon dioxide in the flue gas.

Specifically, the number of tube assemblies 51 is between 2-4.

Specifically, the multiple single tubes 512 in the tube array assembly 51 are distributed at equal intervals in the radial direction of the tower body 1 .

Specifically, the distance between any two adjacent single tubes 512 in the tube array assembly 51 is between 19 mm and 190 mm.

Specifically, the diameter of the single tube 512 is between 19mm-38mm.

In some embodiments, as shown in Figure 1, the carbon capture absorption tower also includes a second packing layer 11 and a gas-liquid uniform distribution plate 12, the second packing layer 11 is arranged in the tower body 1 and is located in the first liquid distributor 2 And between the second liquid distributor 31. The gas-liquid uniform distribution plate 12 is arranged in the tower body 1 and is located below the first liquid distributor 2 and above the flue gas inlet.

The second packing layer 11 is used to increase the contact area between the second absorbent and the flue gas, increase the mass transfer coefficient, and accelerate the rate at which the second absorbent absorbs carbon dioxide in the flue gas.

The gas-liquid uniform distribution plate 12 is used to increase the relative velocity of the gas-liquid (flue gas and the second absorbent), reduce the thickness of the boundary layer, thereby reducing the mass transfer resistance, and increase the absorption load of the second absorbent for carbon dioxide in the flue gas, thereby Improve the carbon capture efficiency of the secondary absorbent.

The gas-liquid uniform distribution plate 12 effectively improves the uniformity of gas-liquid distribution in the tower through direct gas-liquid coupling, thereby improving the uniformity of the flow field, avoiding the phenomenon of flue gas corridors, and improving the effective utilization rate of the second absorbent.

It should be noted that in this embodiment, the gas-liquid uniform distribution plate 12 improves the uniformity of the flow field by at least 50%.

In some embodiments, as shown in FIG. 1 , the lean liquid pipeline 3 includes a first pipeline 33 , a second pipeline 34 and a diverter valve 35 , the first end of the first pipeline 33 and the second liquid distributor 31 connected. The first end of the second pipeline 34 is connected to the third liquid distributor 32, the second end of the second pipeline 34 is connected in parallel with the second end of the first pipeline 33, and the lean liquid pump 36 is connected in series to the first pipeline 33 and the second end of the second pipeline 34. The diverter valve 35 is installed on the first pipeline 33 or the second pipeline 34 .

The second pipeline 34 is used to deliver the first path of the second absorbent to the third liquid distributor 32 , and the first pipeline 33 is used to deliver the second path of the second absorbent to the second liquid distributor 31 . The lean liquid pump 36 is used to supply flow power to the first path of the second absorbent and the second path of the second absorbent. The diverter valve 35 is used to adjust the relative flow of the second absorbent in the first path and the second absorbent in the second path.

Specifically, the flow of the second absorbent in the first path is 60%-85% of the total flow of the second absorbent.

Specifically, the flow of the second absorbent in the second path is 15%-40% of the total flow of the second absorbent.

Specifically, the diverter valve 35 is installed on the first pipeline 33 .

In some embodiments, as shown in Figure 5, the carbon capture absorption tower also includes an inclined flue 6, the first end of the flue 6 is connected to the flue gas inlet, and the second end of the flue 6 is placed in the flue 6 above the first end and is suitable for passing through the flue gas.

Thus, the second absorbent in the tower body 1 is prevented from being poured out of the tower body 1 through the flue 6 . In addition, when the flue gas enters the tower body 1 through the flue 6, its flow direction forms a certain buffer with the tower body 1, so that the flue gas will not vertically scour the inner wall of the tower body 1. In addition, the inclined flue 6 can improve the uniformity of flue gas velocity distribution in the tower body 1 .

Specifically, in this embodiment, the relative standard deviation of the velocity distribution of the flue gas in the tower body 1 is about 25% higher than that in the horizontal flue 6 .

It should be noted that the included angle between the flue 6 and the vertical is between 7-15°.

In some embodiments, as shown in FIG. 1 , the carbon capture absorption tower further includes a first mist eliminator 7 , and the first mist eliminator 7 is arranged in the tower body 1 and above the third liquid distributor 32 .

After the flue gas has reacted with the second absorbent, it enters the first mist eliminator 7, which is used to initially remove the moisture carried in the flue gas and the second absorbent, thereby lifting the water and the second absorbent. The recovery rate of the absorbent reduces the material cost of the carbon capture absorption tower.

In some embodiments, as shown in Figure 1, the carbon capture absorption tower also includes a cooler 8, a liquid delivery pipeline 81 and a second demister 9, and the top of the tower body 1 is provided with a demister above the first demister 7. The flue gas outlet, the cooler 8 is placed outside the tower body 1 and has an air inlet for inputting the flue gas, an outlet for outputting the flue gas, and a liquid discharge port for discharging the second absorbent in the flue gas. The gas port is connected with the flue gas outlet. The first end of the infusion pipeline 81 is connected to the liquid outlet, and the second end of the infusion pipeline 81 is placed in the tower body 1 . The second demister 9 is connected to the air outlet.

The cooler 8 is used to lower the temperature of the flue gas to further condense the moisture in the flue gas and the second absorbent, and the condensed moisture and the second absorbent flow back into the tower body 1 through the liquid outlet and the liquid delivery pipe 81, thereby, The utilization rate of water and the second absorbent is further improved. The second demister 9 is used for secondary trapping of the second absorbent and moisture droplets carried by the flue gas, thereby reducing the consumption of the second absorbent and water in the tower body 1 .

It should be noted that the second demister 9 is a high-efficiency demister.

To sum up, the carbon capture absorption tower of the embodiment of the present invention has the following beneficial effects:

The method of interstage cooler 5+second absorbent split flow is adopted to increase the cooling measures of the second absorbent in the tower body 1, which ensures the effective reduction of the temperature of the second absorbent, which is better than conventional measures in cooling effect and effectively improves carbon dioxide capture efficiency.

The inclined flue 6 increases the relative standard deviation of the flue gas velocity distribution by about 25% compared with the flue gas velocity distribution of the conventional tower body 1, thereby improving the distribution uniformity of the flue gas in the tower body 1 and the gas-liquid mass transfer efficiency.

The oxide layer can reduce the degradation loss of the second absorbent, increase the use range of the second absorbent, and reduce the material consumption of the carbon capture absorption tower.

The interstage cooler 5 lowers the temperature of the second absorbent, increases the loading capacity of the second absorbent for carbon dioxide, and can also increase the gas-liquid turbulence effect and improve the gas-liquid mass transfer efficiency in the tower body 1 .

The second demister 9 is used to capture the second absorbent droplets and moisture taken away in the flue gas, and return them to the tower to reduce the consumption of the second absorbent and water.

The second absorbent is sprayed into the tower body 1 through the first pipeline 33 and the second pipeline 34, which can reduce the temperature of the first second absorbent after the reaction and improve the capture efficiency of carbon dioxide.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

As used herein, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or example. A feature is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the above-mentioned embodiments have been shown and described, it can be understood that the above-mentioned embodiments are exemplary, and should not be construed as limitations on the present invention. Changes, modifications, substitutions and variations made by those skilled in the art to the above-mentioned embodiments All within the protection scope of the present invention.

Claims (10)

1. A carbon capture absorption tower, characterized in that, comprising: a tower body, the bottom of the tower body has a flue gas inlet; A first liquid distributor, the first liquid distributor is arranged in the tower body and is located above the flue gas inlet, the first liquid distributor is suitable for passing through the first absorbent rich in antioxidants; and The lean liquid pipeline, the first end of the poor liquid pipeline communicates with the surrounding wall of the tower body, the lean liquid pump is installed at the second end of the poor liquid pipeline, and the poor liquid pipeline is suitable for transporting A second absorbent for absorbing carbon dioxide in flue gas. 2. The carbon capture absorption tower according to claim 1, further comprising: The second liquid distributor, the second liquid distributor is arranged in the tower body and is located above the first liquid distributor, the second liquid distributor passes through the peripheral wall of the tower body and the lean liquid pipe connected at the first ends of the road; and The third liquid distributor, the third liquid distributor is arranged in the tower body and is located above the second liquid distributor, the third liquid distributor passes through the peripheral wall of the tower body and the lean liquid pipe connected to the first end of the road. 3. The carbon capture and absorption tower according to claim 2, characterized in that, the carbon capture and absorption tower also includes a plurality of gas-liquid mass transfer components arranged in the tower body, a plurality of the gas-liquid mass transfer components The mass assembly is located between the second liquid distributor and the third liquid distributor and distributed at intervals in the height direction of the tower body; the gas-liquid mass transfer assembly includes a first packing layer and a liquid redistributor , the first packing layer is located above the liquid redistributor, and both the first packing layer and the liquid redistributor are connected to the tower body. 4. The carbon capture and absorption tower according to claim 3, characterized in that, the carbon capture and absorption tower also includes an interstage cooler, and the interstage cooler is arranged in the tower body and is located in any adjacent Between the two gas-liquid mass transfer components. 5. The carbon capture absorption tower according to claim 4, wherein the interstage cooler comprises a plurality of array tube assemblies, and a plurality of the array tube assemblies are distributed at intervals in the height direction of the tower body , the tube array assembly includes a first connecting tube, a single tube and a second connecting tube, the number of the single tubes is multiple and distributed at intervals in the radial direction of the tower body, the first of the multiple single tubes end communicates with the first connecting pipe, and the second ends of the plurality of single pipes communicate with the second connecting pipe, and both the first connecting pipe and the second connecting pipe are connected to the interior of the tower body. The surrounding walls are connected; In any two adjacent tube assemblies, the multiple single tubes of one and the multiple single tubes of the other are staggered in the radial direction of the tower body, and the first tubes of one The connecting pipe is provided with a water inlet, the second connecting pipe is provided with a water outlet, the first connecting pipe of the other is provided with a water outlet, and the second connecting pipe is provided with a water inlet. 6. The carbon capture absorption tower according to claim 2, characterized in that, the carbon capture absorption tower further comprises: a second packing layer, the second packing layer is arranged in the column body and is located between the first liquid distributor and the second liquid distributor; and A gas-liquid uniform distribution plate, the gas-liquid uniform distribution plate is arranged in the tower body and is located below the first liquid distributor and above the flue gas inlet. 7. The carbon capture absorption tower according to claim 2, wherein the lean liquid pipeline comprises: a first pipeline, the first end of the first pipeline is connected to the second liquid distributor; A second pipeline, the first end of the second pipeline is connected to the third liquid distributor, the second end of the second pipeline is connected in parallel with the second end of the first pipeline, the The lean liquid pump is connected in series with the second end of the first pipeline and the second pipeline; and A diverter valve, the diverter valve is installed in the first pipeline or the second pipeline. 8. The carbon capture and absorption tower according to claim 1, characterized in that, the carbon capture and absorption tower also includes an inclined flue, the first end of the flue is connected to the flue gas inlet, and the The second end of the flue is placed above the first end of the flue and is suitable for passing in flue gas. 9. The carbon capture absorption tower according to claim 2, characterized in that, the carbon capture absorption tower also comprises a first mist eliminator, the first mist eliminator is arranged in the tower body and is located at the above the third liquid distributor. 10. The carbon capture absorption tower according to claim 9, characterized in that, the carbon capture absorption tower further comprises: A cooler, the top of the tower body is provided with a flue gas outlet above the first demister, the cooler is placed outside the tower body and has an air inlet for inputting flue gas, for A gas outlet for outputting flue gas and a liquid discharge port for discharging the second absorbent in the flue gas, the air inlet is connected to the flue gas outlet; An infusion pipeline, the first end of the infusion pipeline is connected to the liquid outlet, and the second end of the infusion pipeline is placed in the tower body; and A second demister, the second demister is connected to the air outlet.

Images