Packed unit cell of absorption tower and absorption tower

Abstract

The embodiment of the present application provides a packing unit chamber of an absorption tower and the absorption tower. The packing unit chamber of the absorption tower comprises an upper layer of packing, a lower layer of packing, a packing support and a support base. The upper layer of packing is stacked above the lower layer of packing, the air permeability of the upper layer of packing is less than that of the lower layer of packing; the packing support is arranged below the lower layer of packing; the support base can be fixed on the inner wall surface of the tower body, and the packing support is overlapped on the support base. By stacking the upper layer of packing above the lower layer of packing, the pore diameter of the air permeable hole of the upper layer of packing is less than that of the lower layer of packing, the lower layer flux is increased, liquid flooding can be avoided, the upper layer flux is small, and the mass transfer time is prolonged. Therefore, the packing unit chamber of the absorption tower has the advantages of good mass transfer and carbon capture effects while avoiding liquid flooding.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide recovery technology, and more specifically to a packed unit chamber of an absorption tower and an absorption tower having the packed unit chamber of the absorption tower. Background Technology

[0002] Absorber towers often use a single type of packing material. The high permeability of this packing often leads to short contact time between the gas and the absorbent, resulting in low flue gas absorption rates. High packing density not only occupies a lot of space but also easily causes absorbent to accumulate inside the tower, leading to a rapid increase in pressure and flooding. This causes the liquid phase on one tray to flow along with the rising gas phase into the tray above, disrupting the normal operation of the absorber tower. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a packed unit chamber for an absorption tower. This packed unit chamber of the absorption tower has the advantages of both good mass transfer and carbon capture effects.

[0004] An embodiment of the present invention also proposes an absorption tower.

[0005] The packing unit chamber of the absorption tower in this embodiment of the invention includes an upper packing layer, a lower packing layer, a packing support, and a support base.

[0006] The upper packing layer is stacked on top of the lower packing layer, and the air permeability of the upper packing layer is less than that of the lower packing layer; the packing support is located below the lower packing layer; the support base can be fixed to the inner wall of the tower body, and the packing support overlaps on the support base.

[0007] In the packed unit chamber of the absorption tower of this invention, the permeability of the upper packing layer is set to be lower than that of the lower packing layer. The lower permeability of the upper packing layer allows the flue gas to enter the interior of the upper packing layer, which helps to prolong the mass transfer time. The higher permeability of the lower packing layer, i.e., the higher throughput, helps to prevent flooding. This improves the carbon capture efficiency.

[0008] Therefore, the packing unit chamber of the absorption tower in this embodiment of the invention not only avoids flooding but also has the advantages of good mass transfer and carbon capture effects.

[0009] In some embodiments, the thickness of the upper filler layer is less than the thickness of the lower filler layer.

[0010] In some embodiments, the pore size of the vent holes in the upper packing layer is smaller than that of the vent holes in the upper packing layer.

[0011] In some embodiments, both the upper filler layer and the lower filler layer have multiple filler single layers, each filler single layer having multiple embossed textures, and the vent holes are located at the bottom of the embossed textures.

[0012] In some embodiments, the embossed texture includes at least one of rounded protrusions, ridges, ripples, or herringbone patterns.

[0013] In some embodiments, the height of the packing unit chamber of the absorption tower is 2m-6m; the height of a single layer of packing is 150-250mm.

[0014] In some embodiments, the packing unit chamber of the absorption tower further includes a cooling assembly, which includes a heat exchanger, a manifold, multiple main pipes and multiple branch pipes. The heat exchanger is connected to the multiple main pipes through the manifold, and each branch pipe is connected to the main pipe. Each main pipe extends along the extension direction of the packing support, and each branch pipe extends along the height direction of the tower body to define multiple packing compartments. The packing unit chamber of the absorption tower is provided with multiple packing block layers in the horizontal direction, and the multiple packing block layers are arranged one-to-one in the multiple packing compartments.

[0015] In some embodiments, the packing support includes an upper crossbeam, a lower crossbeam, and a connecting beam. The upper crossbeam and the lower crossbeam are connected by the connecting beam. There are multiple connecting beams, which are arranged in a zigzag pattern along the extension direction of the upper crossbeam. At least a portion of the multiple main pipes extend along the extension direction of the upper crossbeam. The main pipes are in contact with the sidewall of the upper crossbeam, and the upper end face of the main pipes is lower than or flush with the upper end face of the upper crossbeam.

[0016] In some embodiments, there are multiple upper crossbeams and multiple lower crossbeams, which are arranged one-to-one in the vertical direction, and the multiple upper crossbeams are arranged parallel to each other at intervals in the horizontal direction. The width of the lower crossbeam is smaller than the width of the upper crossbeam, and the edge of the filler block layer overlaps on the adjacent upper crossbeam.

[0017] In some embodiments, the upper crossbeam has an upper end face, a lower end face, and a connecting surface connecting the upper end face and the lower end face. The area of ​​the upper end face is smaller than the area of ​​the lower end face. The connecting beam is connected to the lower end face. The width of the lower end face is greater than the width of the lower crossbeam. The connecting surface is an arc-shaped smoke guiding surface; or, the connecting surface is a smoke guiding surface that is inclined from top to bottom.

[0018] In some embodiments, the packing unit chamber of the absorption tower further includes a distributor disposed above the upper packing layer.

[0019] In some embodiments, the packing unit chamber of the absorption tower further includes a grid plate, which is pressed onto the upper packing layer to prevent the upper packing layer from floating.

[0020] The absorption tower of the present invention includes a tower body, wherein a plurality of packing chambers are arranged at intervals along the height direction of the tower body, and at least one of the packing chambers is a packing unit chamber of the absorption tower according to any one of the above-mentioned methods. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the absorption tower according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the packing unit chamber of the absorption tower according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the packing support structure according to an embodiment of the present invention.

[0024] Figure 4 This is a cross-sectional view of the packing support according to an embodiment of the present invention.

[0025] Figure label:

[0026] Packing unit chamber 100; Tower body 200;

[0027] Upper packing layer 1;

[0028] Lower packing layer 2;

[0029] 3. Filler support; 31. Upper crossbeam; 311. Upper end face; 312. Connecting surface; 313. Lower end face;

[0030] Lower crossbeam 32; Connecting beam 33;

[0031] Support 4;

[0032] Cooling assembly 5; heat exchanger 51; manifold 52; main pipe 53; branch pipe 54;

[0033] Distributor 6;

[0034] 7. Grille plate. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The following is for reference. Figures 1-4 The packing unit chamber 100 and the absorption tower of the present invention are described in an embodiment of the present invention.

[0037] The packing unit chamber 100 of the absorption tower in this embodiment of the invention includes an upper packing layer 1, a lower packing layer 2, a packing support 3, and a support base 4.

[0038] The upper packing layer 1 is stacked on top of the lower packing layer 2, and the diameter of the vent holes of the upper packing layer 1 is smaller than that of the vent holes of the lower packing layer 1; the packing support 3 is set below the lower packing layer 2; the support base 4 can be fixed on the inner wall of the tower body 200, and the packing support 3 overlaps on the support base 4.

[0039] In this embodiment of the invention, the packing unit chamber 100 of the absorption tower is configured such that the permeability of the upper packing layer 1 is lower than that of the lower packing layer 2. The lower permeability of the upper packing layer 1 allows the flue gas to enter its interior, thus extending the mass transfer time. Conversely, the higher permeability of the lower packing layer 2, meaning a larger flow rate, helps prevent flooding. This, in turn, enhances the carbon capture efficiency.

[0040] Therefore, the packing unit chamber 100 of the absorption tower in this embodiment of the invention not only avoids flooding but also has the advantages of good mass transfer and carbon capture effects.

[0041] Furthermore, the air vents of the upper packing layer 1 and the lower packing layer 2 can be staggered.

[0042] like Figure 2 As shown, the thickness of the upper packing layer 1 is less than the thickness of the lower packing layer 2.

[0043] In the absorption tower of this embodiment, the packing unit chamber 100 has a smaller upper packing layer 1 thickness than the lower packing layer 2, which reduces the flux of the upper packing layer 1 and extends the mass transfer time. The larger thickness of the lower packing layer 2 further extends the gas-liquid mass transfer time, which is beneficial to improving the carbon capture effect.

[0044] Optionally, the thickness of the lower packing layer 2 is 2-4 times the thickness of the upper packing layer 1. Therefore, by setting the thickness of the lower packing layer 2 to be the same as the thickness of the upper packing layer 1, flooding can be avoided, and the mass transfer time can be effectively extended, thereby further improving the carbon capture effect.

[0045] Specifically, the thickness of the lower packing layer 2 is 2, 3, or 4 times the thickness of the upper packing layer 1.

[0046] The pore size of the upper packing layer 1 is smaller than that of the lower packing layer 1. Similarly, this avoids flooding and effectively prolongs the mass transfer time, thereby further improving the carbon capture effect.

[0047] Both the upper filler layer 1 and the lower filler layer 2 have multiple filler single layers, each with multiple embossed textures and vent holes located at the bottom of the embossed textures.

[0048] The packing unit chamber 100 of the absorption tower in this embodiment of the invention has multiple layers of single-layer packing material in both the upper packing layer 1 and the lower packing layer 2. This layered packing design provides a larger surface area for contact, allowing for more mass transfer between the gas and liquid, i.e., the transfer of components from the gas to the liquid, thus improving the absorption efficiency of the flue gas. Simultaneously, each single-layer packing material helps redistribute the absorbent, ensuring a more uniform liquid distribution. This reduces "channeling" and "wall flow" phenomena, thereby ensuring the efficient utilization of the single-layer packing material and improving fluid distribution.

[0049] Furthermore, the packing unit chamber 100 of the absorption tower in this embodiment of the invention can significantly increase the surface area of ​​the packing through embossed texture, which helps to further increase the contact area between the gas-liquid or liquid-liquid phases, thereby improving the mass transfer efficiency. Embossing texture can improve fluid distribution, ensuring uniform distribution of fluid across the entire packing layer, avoiding short-circuiting and channeling phenomena, increasing fluid turbulence, helping to break up the liquid film, and reducing mass transfer resistance. Therefore, the packing unit chamber 100 has the advantage of improving flue gas absorption rate.

[0050] Optionally, the height of a single layer of packing is 150-250 mm. For example, the height of a single layer of packing is 200 mm.

[0051] Furthermore, the embossed texture includes at least one of rounded protrusions, ridges, ripples, or herringbone patterns.

[0052] The height of the packing unit chamber 100 in the absorption tower is 2m-6m. For example, the height of the packing unit chamber 100 in the absorption tower can be 2m, 4m or 6m.

[0053] like Figure 2 As shown, the packing unit chamber 100 of the absorption tower in this embodiment of the invention also includes a cooling assembly 5. The cooling assembly 5 includes a heat exchanger 51, a manifold 52, multiple main pipes 53 and multiple branch pipes 54. The heat exchanger 51 is connected to multiple main pipes 53 through the manifold 52. Each branch pipe 54 is connected to a main pipe 53. Each main pipe 53 extends along the extension direction of the packing support 3. Each branch pipe 54 extends along the height direction of the tower body 200 to define multiple packing compartments. The packing unit chamber 100 of the absorption tower is provided with multiple packing block layers in the horizontal direction. The multiple packing block layers are arranged one-to-one in the multiple packing compartments.

[0054] In this embodiment of the invention, the packing unit chamber 100 of the absorption tower is equipped with a cooling assembly 5. The cooling assembly 5 includes a heat exchanger 51, a manifold 52, multiple main pipes 53, and multiple branch pipes 54. The heat exchanger 51 is connected to the multiple main pipes 53 through the manifold 52, and each branch pipe 54 is connected to a main pipe 53. Each main pipe 53 extends along the extension direction of the packing support 3, and each branch pipe 54 extends along the height direction of the tower body 200, defining multiple packing compartments. Thus, while the absorbent absorbs CO2, direct heat exchange is achieved between the absorbent and the cooling assembly 5 (i.e., changing from indirect heat exchange to direct contact heat exchange), thereby keeping the absorbent at a relatively low temperature (because a relatively low temperature results in a relatively high adsorption capacity of the absorbent). This helps to increase the concentration of the rich liquid and improve the CO2 adsorption efficiency. Furthermore, by placing the cooling component 5 within the packed unit chamber 100 and directly exchanging heat with the absorbent, it is unnecessary to collect the absorbent, export it outside the tower body 200, and then circulate it outside the tower for cooling using a circulating pump. Only a heat exchange pipe needs to be installed inside the tower body 200. This helps reduce energy consumption for flue gas treatment and decreases equipment investment costs. Therefore, the packed unit chamber 100 of the absorption tower in this embodiment of the invention has the advantages of reduced energy consumption, improved heat exchange efficiency, and reduced equipment investment.

[0055] like Figure 3 and Figure 4 As shown, the packing support 3 includes an upper crossbeam 31, a lower crossbeam 32, and a connecting beam 33. The upper crossbeam 31 and the lower crossbeam 32 are connected by the connecting beam 33. There are multiple connecting beams 33, which are arranged in a zigzag pattern along the extension direction of the upper crossbeam 31. At least a portion of the multiple main pipes 53 extend along the extension direction of the upper crossbeam 31. The main pipes 53 are attached to the side wall of the upper crossbeam 31, and the upper end face 311 of the main pipes 53 is lower than or flush with the upper end face 311 of the upper crossbeam 31.

[0056] The packing unit chamber 100 of the absorption tower in this embodiment of the invention, by using upper crossbeam 31, lower crossbeam 32, and connecting beam 33 for the packing support 3, provides stronger mechanical strength and rigidity compared to a single-layer support beam setup. This allows for more stable support of the packing layer, making it suitable for high-temperature, high-pressure, or corrosive environments. Simultaneously, the two-layer beam structure can more evenly distribute the weight of the equipment within the tower, avoiding overload at individual support points and reducing stress concentration, thereby extending the overall service life of the equipment. Furthermore, the zigzag arrangement of the connecting beam 33 provides more support points for the upper crossbeam 31 and lower crossbeam 32, further enhancing the rigidity of the packing support 3. Therefore, the packing unit chamber 100 further improves the overall structural stability.

[0057] Furthermore, the upper end face 311 of the main pipe 53 is lower than or flush with the upper end face 311 of the upper crossbeam 31 to prevent the main pipe 53 from deforming and breaking due to the pressure of the lower packing layer 2. Therefore, the packing unit chamber 100 of the absorption tower in this embodiment of the invention has the advantages of good structural stability and high heat transfer efficiency.

[0058] There are multiple upper crossbeams 31 and lower crossbeams 32. Multiple upper crossbeams 31 and multiple lower crossbeams 32 are arranged one-to-one in the vertical direction, and multiple upper crossbeams 31 are arranged in parallel with spacing in the horizontal direction. The edges of the filler block layer overlap on the adjacent upper crossbeams 31.

[0059] In the absorber tower of this embodiment, the packing unit chamber 100 has a lower crossbeam 32 with a width smaller than the upper crossbeam 31. This prevents dripping liquid from the upper crossbeam 31 from falling back onto the lower crossbeam 32, thus avoiding the problem of the lower crossbeam 32 being perforated, broken, or collapsed due to long-term blown damage from the sprayed liquid. Therefore, the packing unit chamber 100 of the absorber tower of this embodiment helps maintain the long-term stable operation of the packing support 3.

[0060] The upper crossbeam 31 is externally bonded with an erosion-resistant layer (not shown). This erosion-resistant layer enhances the impact resistance of the support beam. Furthermore, the filler unit chamber 100 of this embodiment helps to extend the service life of the support beam.

[0061] Alternatively, the erosion-resistant layer can be a polypropylene layer. Thus, the filler unit chamber 100 has the advantages of low cost and good erosion resistance.

[0062] like Figure 3 and Figure 4 As shown, the upper crossbeam 31 has an upper end face 311, a lower end face 313, and a connecting surface 312 connecting the upper end face 311 and the lower end face 313. The area of ​​the upper end face 311 is smaller than the area of ​​the lower end face 313. The connecting beam 33 is connected to the lower end face 313. The width of the lower end face 313 is greater than the width of the lower crossbeam 32. The connecting surface 312 is an arc-shaped smoke guiding surface; or, the connecting surface 312 is a smoke guiding surface that is inclined from top to bottom.

[0063] In the packing unit chamber 100 of the absorption tower of this embodiment, by connecting the upper end face 311 (with an area smaller than the lower end face 313) to the lower end face 313 (the larger face), the overall structural stability is further improved. Furthermore, because the supporting beam itself increases the resistance to flue gas flow, it helps reduce the problem of poor gas dispersion caused by the upper crossbeam 31 obstructing the corresponding flue gas flow, thereby improving the dispersion of flue gas in the packing. Therefore, the packing unit chamber 100 of the absorption tower of this embodiment helps to improve the absorption rate of flue gas.

[0064] Furthermore, the width of the lower end face 313 is 1.5 to 3 times the width of the upper end face 311.

[0065] Optionally, the width of the lower end face 313 is 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9 or 3.0 times the width of the upper end face 311.

[0066] The packing unit chamber 100 of the absorption tower in this embodiment of the invention further includes a grid plate 7, which is pressed onto the upper packing layer 1 to prevent the upper packing layer 1 from floating. Therefore, the packing unit chamber 100 helps to improve the absorption rate of the absorbent liquid on the flue gas.

[0067] The packing unit chamber 100 of the absorption tower in this embodiment of the invention also includes a distributor 6, which is disposed above the upper packing layer 1.

[0068] In the packed unit chamber 100 of the absorption tower of this embodiment, the liquid absorbent is evenly distributed onto the packing blocks using a distributor 6, ensuring that the packing surface is fully wetted and increasing the gas-liquid contact area. Therefore, the packed unit chamber 100 of this embodiment can improve the efficiency of the absorbent absorption rate.

[0069] Optionally, the distributor 6 is a tray distributor 6. The tray distributor 6 can collect and redistribute the liquid, improving the homogeneity of liquid distribution and ensuring uniform gas distribution in the packing layer or on the tray, further enhancing gas-liquid contact, ensuring uniform liquid coverage within the column and preventing liquid deviation, thus improving the effective utilization of the mass transfer area. Furthermore, the packed unit chamber 100 of this embodiment of the invention contributes to further improving heat exchange efficiency.

[0070] The absorption tower of this invention includes a tower body 200, and a plurality of packing chambers are arranged at intervals along the height direction of the tower body 200, at least one of the packing chambers being a packing unit chamber 100 of the absorption tower according to any one of the above.

[0071] Therefore, the absorption tower of the present invention has the advantages of good mass transfer and carbon capture effects.

[0072] Furthermore, the upper packing layer 1 and lower packing layer 2 in the upstream packing chamber are corrosion-resistant packing layers, while the upper packing layer 1 and lower packing layer 2 in the remaining packing chambers are metal packing layers.

[0073] The upper layer is set as an anti-corrosion packing layer. Because the absorbent liquid in the upper layer is highly acidic due to the absorption of acidic gas, setting the upper packing layer 1 in the uppermost packing chamber as an anti-corrosion packing layer can improve the service life of the packing. The upper packing layer 1 and the lower packing layer 2 in the remaining packing chambers are metal packing layers, which have the advantages of good structural strength and low cost.

[0074] Optionally, the corrosion-resistant filler layer can be a plastic filler layer. The metal filler layer can be a steel filler layer, and more specifically, the metal filler layer can be 304 stainless steel.

[0075] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0078] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0079] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A packed unit chamber for an absorption tower, characterized in that, include: An upper packing layer and a lower packing layer, wherein the upper packing layer is stacked on top of the lower packing layer, and the air permeability of the upper packing layer is less than that of the lower packing layer; A packing support is provided below the lower packing layer; A support base is provided, which can be fixed to the inner wall of the tower body, and the packing material is supported and overlapped on the support base. The filler support includes an upper crossbeam, a lower crossbeam, and a connecting beam, wherein the upper crossbeam and the lower crossbeam are connected by the connecting beam; The upper crossbeam has an upper end face, a lower end face, and a connecting surface between the upper end face and the lower end face. The area of ​​the upper end face is smaller than the area of ​​the lower end face. The connecting beam is connected to the lower end face. The width of the lower end face is greater than the width of the lower crossbeam. The connecting surface is an arc-shaped smoke guiding surface. The width of the lower end face is 1.5-3 times the width of the upper end face.

2. The packing unit chamber of the absorption tower according to claim 1, characterized in that, The thickness of the upper filler layer is less than the thickness of the lower filler layer; And / or, the pore size of the upper packing layer is smaller than the pore size of the lower packing layer.

3. The packing unit chamber of the absorption tower according to claim 1, characterized in that, Both the upper and lower filler layers have multiple filler single layers, each filler single layer has multiple embossed textures, and the vent holes are located at the bottom of the embossed textures.

4. The packing unit chamber of the absorption tower according to claim 3, characterized in that, The embossed texture includes at least one of rounded protrusions, ridges, wavy lines, or herringbone patterns; And / or, the height of the packing unit chamber of the absorption tower is 2m-6m, and the height of a single layer of packing is 150-250mm.

5. The packing unit chamber of the absorption tower according to claim 1, characterized in that, It also includes a cooling assembly, which includes a heat exchanger, a manifold, multiple main pipes and multiple branch pipes. The heat exchanger is connected to the multiple main pipes through the manifold. Each branch pipe is connected to the main pipe. Each main pipe extends along the extension direction of the packing support. Each branch pipe extends along the height direction of the tower body to define multiple packing compartments. The packing unit compartment of the absorption tower is provided with multiple packing block layers in the horizontal direction. The multiple packing block layers are arranged one-to-one in the multiple packing compartments.

6. The packing unit chamber of the absorption tower according to claim 5, characterized in that, The connecting beams are multiple, and the multiple connecting beams are arranged in a zigzag pattern along the extension direction of the upper crossbeam. At least a portion of the multiple main pipes extend along the extension direction of the upper crossbeam. The main pipes are attached to the side wall of the upper crossbeam, and the upper end face of the main pipes is lower than or flush with the upper end face of the upper crossbeam.

7. The packing unit chamber of the absorption tower according to claim 6, characterized in that, There are multiple upper crossbeams and multiple lower crossbeams, and the multiple upper crossbeams and multiple lower crossbeams are arranged one-to-one in the vertical direction. The multiple upper crossbeams are arranged in parallel with spacing in the horizontal direction. The width of the lower crossbeam is smaller than the width of the upper crossbeam. The edge of the filler block layer overlaps on the adjacent upper crossbeam.

8. The packing unit chamber of the absorption tower according to claim 1, characterized in that, It also includes a distributor disposed above the upper packing layer; And / or, it also includes a grid plate, which is pressed onto the upper packing layer to prevent the upper packing layer from floating.

9. An absorption tower, characterized in that, The tower body includes a plurality of packing chambers spaced apart along its height, at least one of the packing chambers being a packing unit chamber of an absorption tower according to any one of claims 1-8.

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