Liquid distributor and absorber

Abstract

The invention provides a liquid distributor and an absorber, and relates to the technical field of heat exchange pressure containers, and the liquid distributor comprises a liquid inlet pipe and at least one group of liquid distribution assemblies. Liquid from the outside flows in from the upper end of the liquid inlet pipe and flows out from the lower end. And each group of liquid distribution assembly comprises a liquid distribution pipe and a liquid distribution groove. The two ends of the liquid distribution pipe are blocked, the liquid distribution pipe is horizontally installed below the liquid inlet pipe and communicated with the liquid inlet pipe so as to receive liquid from the liquid inlet pipe, and a plurality of overflow holes are formed in the pipe wall of the liquid distribution pipe and suitable for allowing the liquid to overflow and be discharged out of the liquid distribution pipe. The liquid separation tank and the liquid separation pipe are installed on the liquid separation pipe in parallel, and at least part of the liquid separation pipe is contained so as to receive the liquid overflowed and discharged through the overflow hole and enable the liquid to be evenly discharged in the length direction of the liquid separation tank from a liquid outlet located in the liquid separation tank.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to the field of heat exchange pressure vessel technology, and more particularly to a liquid distributor and absorber. Background Technology

[0002] A falling film absorber is a common gas-liquid mass transfer device used for mass transfer between gases and liquids, typically applied in chemical processes. Its working principle involves passing gas through a liquid; through gas-liquid contact, certain components of the gas are absorbed or extracted by the liquid, thereby achieving gas purification or separation.

[0003] The liquid distributor, as a device that delivers liquid into the falling film absorber, plays a crucial role. Its design and performance directly affect the mass transfer efficiency and operational stability of the falling film absorber. However, existing liquid distributor designs suffer from uneven liquid distribution, failing to achieve efficient gas-liquid mass transfer. Summary of the Invention

[0004] To address at least one of the technical problems in the prior art, this disclosure provides a liquid distributor capable of uniformly distributing liquid.

[0005] As one aspect of this disclosure, a liquid distributor is provided, comprising an inlet pipe and at least one set of liquid distribution components. Liquid from the outside flows in from the upper end and out from the lower end of the inlet pipe. Each set of liquid distribution components includes a distributing pipe and a distributing trough. The distributing pipe is sealed at both ends, horizontally installed below the inlet pipe, and communicates with the inlet pipe to receive the liquid from the inlet pipe. The distributing pipe has multiple overflow holes on its wall, which are adapted to allow the liquid to overflow from the distributing pipe. The distributing trough is installed parallel to the distributing pipe and at least partially accommodates the distributing pipe to receive the liquid overflowing through the overflow holes and to allow the liquid to be evenly discharged from the outlet located in the distributing trough along its length.

[0006] According to an embodiment of this disclosure, the geometric centers of the plurality of overflow holes are evenly spaced on a distribution line parallel to the first axis of the distribution tube and located below a horizontal plane passing through the first axis.

[0007] According to an embodiment of this disclosure, the plurality of overflow holes are divided into two groups, and the two groups of overflow holes are respectively located on both sides of the pipe wall at the lowest position of the liquid distribution pipe, and are symmetrically distributed with respect to the vertical plane passing through the first axis.

[0008] According to embodiments of this disclosure, one set of the liquid distribution components serves as a primary liquid distribution unit, and the other liquid distribution components serve as secondary liquid distribution units. The inlet end of the liquid distribution pipe of the primary liquid distribution unit is connected to the liquid inlet pipe, and the outlet of the primary liquid distribution unit is connected to the liquid distribution pipe of the secondary liquid distribution unit through multiple connecting pipes, so as to redistribute the liquid through the secondary liquid distribution unit.

[0009] According to embodiments of this disclosure, multiple secondary liquid distribution units are arranged in parallel.

[0010] According to an embodiment of this disclosure, the cross-section of the liquid distribution tank is U-shaped, and the liquid outlet is opened in the middle of the bottom of the liquid distribution tank along the length direction of the liquid distribution tank.

[0011] According to an embodiment of this disclosure, the secondary liquid distribution unit has one liquid outlet, which is opened along the length of the liquid distribution tank of the secondary liquid distribution unit.

[0012] As another aspect of this disclosure, an absorber is provided. The absorber includes a tank, a heat exchange assembly, and any of the above-described liquid distributors. An accommodating space is formed inside the tank, and the heat exchange assembly is arranged within the accommodating space. The liquid distributor is arranged within the accommodating space and positioned above the heat exchange assembly, such that liquid discharged from the outlet of the distribution tank of the lowest liquid distribution assembly absorbs gas located within the tank, forming a liquid film covering the heat exchange assembly. This allows the liquid film to exchange heat with the medium within the heat exchange assembly, carrying away the heat generated by the liquid absorbing the gas.

[0013] According to an embodiment of this disclosure, the heat exchange assembly includes multiple rows of horizontally arranged heat exchange tubes, each row of heat exchange tubes includes multiple heat exchange tubes arranged vertically, and the outlet of each liquid distribution tank of the secondary liquid distribution unit is located on the second axis of each row of heat exchange tubes, so that the liquid drips onto the heat exchange tubes.

[0014] According to an embodiment of this disclosure, the tank includes a shell and two sealing plates. The two sealing plates are arranged upright at both ends of the shell, forming the receiving space with the shell. Each heat exchange tube extends into the receiving space from one sealing plate and extends out from the other sealing plate, and each secondary liquid distribution unit is installed between the two sealing plates.

[0015] According to the liquid distributor of this disclosure, by sealing both ends of the liquid distribution tube of the liquid distribution assembly and installing it horizontally below the liquid inlet tube, the liquid is received from the liquid inlet tube. Multiple overflow holes are opened on the tube wall so that the liquid overflows from the overflow holes and flows into the liquid distribution tank located below the liquid distribution tube along the length direction of the liquid distribution tube. The liquid is collected in the liquid distribution tank so that the liquid can be evenly discharged from the liquid distribution port arranged along the length direction of the liquid distribution tank, avoiding liquid blockage or poor liquid flow. Attached Figure Description

[0016] Figure 1 A schematic side view of a liquid distributor according to an embodiment of the present disclosure is shown;

[0017] Figure 2 Schematic illustration Figure 1 A magnified view of part A shown;

[0018] Figure 3 A side view of a separator according to an embodiment of the present disclosure is shown schematically;

[0019] Figure 4 Schematic illustration Figure 3 The cross-sectional view of the separatory tube shown;

[0020] Figure 5 Schematic illustration Figure 3 The side view of the separator shown in the figure, directed along direction C;

[0021] Figure 6 A schematic side view of the interior of an absorber according to an embodiment of the present disclosure is shown; and

[0022] Figure 7 Schematic illustration Figure 6 The absorber shown is a cross-sectional view of DD.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Distributor;

[0025] 11-Inlet pipe;

[0026] 12-Liquid distribution unit;

[0027] 121 - Separator;

[0028] 1211 - Overflow hole;

[0029] 1212 - Opening;

[0030] 122 - Separation tank;

[0031] 1221-liquid outlet;

[0032] 13-Connecting pipe;

[0033] 2-Accommodation space;

[0034] 3-Heat exchange tubes;

[0035] 4-Sealing plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings. However, this disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. In the accompanying drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated, and the same reference numerals denote the same elements throughout.

[0037] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0039] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0040] To facilitate understanding of the technical solutions disclosed herein by those skilled in the art, the following technical terms are explained.

[0041] When using expressions such as "at least one of A, B, and C", they should generally be interpreted in accordance with the meaning that is commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B, and C, etc.).

[0042] Figure 1 A schematic side view of a liquid distributor according to an embodiment of the present disclosure is shown.

[0043] As one aspect of the embodiments of this disclosure, a liquid distributor 1 is provided, such as... Figure 1 As shown, the liquid distributor 1 includes an inlet pipe 11 and at least one set of liquid distribution components. Liquid from the outside flows in from the upper end and out from the lower end of the inlet pipe 11. Each set of liquid distribution components includes a distribution pipe 121 and a distribution trough 122. The two ends of the distribution pipe 121 are sealed, and it is horizontally installed below and connected to the inlet pipe 11 to receive liquid from the inlet pipe 11. Multiple overflow holes 1211 are formed on the wall of the distribution pipe 121, allowing liquid to overflow from the distribution pipe 121. The distribution trough 122 is installed parallel to the distribution pipe 121 and at least partially accommodates the distribution pipe 121 to receive the liquid overflowing through the overflow holes 1211 and to uniformly discharge the liquid from the outlet 1221 located in the distribution trough 122 along the length of the distribution trough 122.

[0044] According to the liquid distributor 1 of this disclosure embodiment, by sealing both ends of the liquid distribution pipe 121 of the liquid distribution assembly, it is horizontally installed below the liquid inlet pipe 11 to receive liquid from the liquid inlet pipe 11. Multiple overflow holes 1211 are opened on the pipe wall of the liquid distribution pipe 121 so that the liquid overflows from the overflow holes 1211 and flows into the liquid distribution tank 122 located below the liquid distribution pipe 121 along the length direction of the liquid distribution pipe 121. The liquid is collected through the liquid distribution tank 122 so that the liquid can be evenly discharged from the liquid distribution port arranged along the length direction of the liquid distribution tank 122, avoiding liquid blockage or poor liquid flow.

[0045] According to embodiments of this disclosure, the liquid distribution tank 122 can be installed on the liquid distribution pipe 121 by means of welding, bonding, screwing, etc.

[0046] According to embodiments of this disclosure, the liquid inlet pipe 11 and at least one set of liquid distribution components can be made of stainless steel.

[0047] According to an embodiment of the present disclosure, the geometric centers of a plurality of overflow holes 1211 are evenly spaced on a distribution line parallel to the first axis of the distribution pipe 121 and located below a horizontal plane passing through the first axis.

[0048] According to an embodiment of the present disclosure, the overflow orifice 1211 is uniformly distributed over the length of the liquid distribution tube 121.

[0049] According to embodiments of this disclosure, the flow rate of liquid flowing into the inlet pipe 11 and the length of the distributor pipe 121 can be determined.

[0050] Figure 2Schematic illustration Figure 1 A magnified view of part A shown below. Figure 3 A side view of a separator according to an embodiment of the present disclosure is shown schematically. Figure 4 Schematic illustration Figure 3 The diagram shows a cross-sectional view of the separatory tube BB.

[0051] According to embodiments of this disclosure, such as Figures 1 to 4 As shown, the multiple overflow holes 1211 are divided into two groups. The two groups of overflow holes 1211 are located on both sides of the pipe wall at the lowest position of the liquid distribution pipe 121, and are symmetrically distributed with respect to the vertical plane passing through the first axis.

[0052] According to embodiments of this disclosure, the angle α between the axis of the overflow hole 1211 and the horizontal plane is greater than 0° and less than 90°, preferably 30°≤α≤60°, for example, it can be 45°.

[0053] According to an embodiment of this disclosure, liquid enters the distribution pipe 121 through the inlet pipe 11, flows into the distribution tank 122 through the overflow holes 1211 on both sides of the distribution pipe 121, and slowly drips down through the outlet 1221 of the distribution tank 122 under the action of gravity.

[0054] According to embodiments of this disclosure, the diameter of the overflow hole 1211 can be any of 1.5 mm, 2 mm, 3 mm, and 5 mm.

[0055] According to an embodiment of this disclosure, one set of liquid distribution components serves as a primary liquid distribution unit, and the other liquid distribution components serve as secondary liquid distribution units. The inlet end of the liquid distribution pipe of the primary liquid distribution unit is connected to the liquid inlet pipe 11, and the outlet 1221 of the primary liquid distribution unit is connected to the liquid distribution pipe 121 of the secondary liquid distribution unit through multiple connecting pipes 13, so as to redistribute the liquid through the secondary liquid distribution unit.

[0056] According to an embodiment of this disclosure, a plurality of primary liquid outlets are provided on the liquid distribution tank 122 of the primary liquid distribution unit, and a plurality of secondary liquid distribution units are respectively installed below the plurality of primary liquid outlets to receive the liquid flowing out of the primary liquid outlets.

[0057] According to an embodiment of this disclosure, the diameter of the primary outlet is slightly larger than the outer diameter of the connecting pipe 13, so as to facilitate the insertion and welding of the connecting pipe 13 into the primary outlet.

[0058] According to an embodiment of this disclosure, an opening 1212 is provided on the liquid distribution pipe 121 of the secondary liquid distribution unit. The diameter of the opening 1212 is slightly larger than the outer diameter of the connecting pipe 13, so as to facilitate the insertion and welding of the connecting pipe 13 into the opening 1212.

[0059] According to an embodiment of this disclosure, the liquid outlet 1221 of the secondary liquid distribution unit is one, which is opened along the length direction of the liquid distribution tank 122 of the secondary liquid distribution unit.

[0060] According to an embodiment of this disclosure, there may be one outlet 1221 on the lowest liquid distribution tank 122, which is opened along the length of the liquid distribution tank 122.

[0061] Figure 5 Schematic illustration Figure 3 The side view of the separator shown in direction C.

[0062] According to an embodiment of the present disclosure, the cross-section of the liquid distribution tank 122 is U-shaped, and an outlet 1221 is opened in the middle of the bottom of the liquid distribution tank 122 along the length direction of the liquid distribution tank 122.

[0063] According to an embodiment of the present disclosure, the liquid distribution tank 122 can be cut from the middle of the square tube in the height direction, and each liquid distribution tank 122 can be half of the square tube.

[0064] According to an embodiment of this disclosure, the width of the liquid distribution tank 122 is slightly larger than the outer diameter of the corresponding liquid distribution pipe 121, so that the liquid distribution tank 122 can be installed below the liquid distribution pipe 121 by welding.

[0065] According to an embodiment of this disclosure, the liquid distribution tank 122 located at the bottom can be formed by two L-shaped square steel sections facing each other on the corresponding pressure-distributing pipe, thereby forming a narrow gap between the two L-shaped square steel sections as the liquid outlet 1221 of the liquid distribution tank 122. When the liquid flows out from the gap, it drips slowly due to the viscosity of the liquid itself.

[0066] In one illustrative embodiment, the length of the outlet 1221 on the bottommost liquid distribution tank 122 is the same as the length of the liquid distribution tank 122, and the width can be any of 2mm, 2.5mm, 3mm or 5mm.

[0067] According to the embodiments of this disclosure, by setting a primary liquid distribution unit, the liquid can be distributed approximately evenly and flow into the secondary liquid distribution unit located below the outlet 1221 of the primary liquid distribution unit at approximately the same flow rate. After being evenly distributed by the secondary liquid distribution unit, the liquid is discharged from the outlet 1221 of the liquid distribution tank located at the bottom.

[0068] According to embodiments of this disclosure, multiple secondary liquid distribution units are arranged in parallel. Specifically, the distribution pipe 121 of each secondary liquid distribution unit 12 is arranged in parallel below the outlet 1221 of the primary liquid distribution unit.

[0069] According to an embodiment of this disclosure, the axis of the distribution pipe 121 of the secondary liquid distribution unit intersects the axis of the distribution pipe 121 of the primary liquid distribution unit. Preferably, the axis of the distribution pipe 121 of the secondary liquid distribution unit is perpendicular to the distribution pipe 121 of the primary liquid distribution unit.

[0070] Figure 6 A schematic side view of the interior of an absorber according to an embodiment of the present disclosure is shown. Figure 7 Schematic illustration Figure 6 The absorber shown is a cross-sectional view of DD.

[0071] As another aspect of this disclosure, an absorber is provided. For example... Figure 6 and Figure 7 As shown, the absorber includes a tank, a heat exchange assembly, and any one of the aforementioned liquid distributors 1. An accommodating space 2 is formed inside the tank, and the heat exchange assembly is arranged within the accommodating space 2. The aforementioned liquid distributor 1 is arranged within the accommodating space 2 and positioned above the heat exchange assembly, allowing liquid discharged from the outlet 1221 of the distribution tank 122 of the lowest liquid distribution assembly to absorb the gas located inside the tank, forming a liquid film covering the heat exchange assembly. This allows the liquid film to exchange heat with the medium within the heat exchange assembly, carrying away the heat generated by the liquid absorbing the gas.

[0072] According to the embodiments of the present disclosure, by providing any of the above-mentioned liquid distributors 1, it can be ensured that the liquid flowing in through the liquid inlet pipe 11 is evenly distributed inside the absorber, thus avoiding liquid blockage or poor liquid flow.

[0073] According to embodiments of this disclosure, external liquid can be pumped to the distributor 1 located inside the absorber at a preset flow rate using a pump body (e.g., a volumetric pump). The flow rate of the liquid can be controlled by the pump body to ensure the thickness and stability of the liquid film, thereby improving the mass transfer efficiency.

[0074] According to embodiments of this disclosure, the combination of gas and liquid may further include the gas being a refrigerant and the liquid being an absorbent.

[0075] In one illustrative embodiment, the gas may include difluorochloromethane (R22), and the liquid may be an organic solvent.

[0076] According to embodiments of this disclosure, difluorochloromethane, also known as dichlorodifluoromethane, monochlorodifluoromethane, Freon-22, or simply HCFC-22, with the chemical formula CHClF2, is a hydrogen-containing chlorofluorocarbon that is gaseous at room temperature and soluble in organic solvents.

[0077] In one illustrative embodiment, the liquid may include one or more combinations of ethanol, ethylene glycol, and diethyl ether.

[0078] According to an embodiment of this disclosure, the inlet pipe 11 can extend from outside the tank into the receiving space 2, with the upper end of the inlet pipe 11 located outside the tank and the lower end located inside the receiving space 2.

[0079] According to an embodiment of this disclosure, the upper end of the inlet pipe 11 may be configured with a threaded structure to facilitate communication with an external pipe.

[0080] According to an embodiment of this disclosure, the tank is provided with an air inlet and an air outlet. Gas enters the containing space 2 through the air inlet, and the gas is discharged through the air outlet after being absorbed by the liquid in the containing space 2.

[0081] According to an embodiment of this disclosure, a liquid outlet 1221 is provided at the lower part of the tank, and the liquid after absorbing gas is discharged from the liquid outlet 1221.

[0082] According to an embodiment of the present disclosure, the heat exchange assembly includes multiple rows of heat exchange tubes 3 arranged horizontally. Each row of heat exchange tubes 3 includes multiple heat exchange tubes 3 arranged vertically. The outlet 1221 of each liquid distribution tank 122 of the secondary liquid distribution unit is located on the second axis of each row of heat exchange tubes 3, so that the liquid slowly drips onto the heat exchange tubes 3.

[0083] According to an embodiment of this disclosure, the tank includes a shell and two sealing plates 4. The two sealing plates 4 are arranged upright at both ends of the shell, forming a receiving space 2 with the shell. Each heat exchange tube 3 extends into the receiving space 2 from one sealing plate 4 and extends out from the other sealing plate 4, and each secondary liquid distribution unit is installed between the two sealing plates 4.

[0084] According to the embodiments of this disclosure, the length of the outlet 1221 of the liquid distribution tank 122 at the bottom is approximately the same as the length of the heat exchange tube 3. The liquid is evenly discharged from multiple outlets 1221, and the liquid gradually drips down from the heat exchange tube 3 at the top. The liquid exchanges heat with the medium in the heat exchange assembly through multiple heat exchange tubes 3, and the heat generated by the liquid absorbing the gas is carried away.

[0085] According to embodiments of this disclosure, at least one of the dispensing pipe 121 and dispensing tank 122 of the secondary liquid distribution unit can be welded between the two sealing plates 4.

[0086] In one illustrative embodiment, the liquid distribution pipe 121 and the liquid distribution tank 122 of the secondary liquid distribution unit are welded between two sealing plates 4, and the ends of the liquid distribution pipe 121 and the liquid distribution tank 122 are sealed by the two sealing plates 4 respectively.

[0087] According to embodiments of this disclosure, by setting a primary liquid distribution unit, the liquid flowing in through the oil inlet pipe can be evenly distributed to each secondary liquid distribution unit. The secondary liquid distribution unit evenly distributes the liquid distributed by the primary liquid distribution unit 12 along the length of the secondary liquid distribution unit, so that the liquid can drip from the outlet 1221 on the lower liquid distribution tank 122 along the length of each row of heat exchange tubes 3 onto each row of heat exchange tubes 3, forming a star-shaped liquid film on the outer wall of each row of heat exchange tubes 3, so that the total amount of liquid dripping onto each row of heat exchange tubes 3 is approximately the same, thereby improving the heat exchange efficiency of the heat exchange assembly.

[0088] Furthermore, unless specifically described or required to occur in a specific order, the order of the above steps is not limited to those listed above and can be varied or rearranged according to the desired design. Moreover, the above embodiments can be used in combination with each other or with other embodiments based on design and reliability considerations; that is, technical features from different embodiments can be freely combined to form more embodiments.

[0089] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of this disclosure. It should be understood that the above are only specific embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A liquid distributor, characterized in that, include: Liquid inlet pipe: Liquid from the outside flows in from the upper end and flows out from the lower end of the liquid inlet pipe; At least one liquid distribution assembly, each liquid distribution assembly including: The liquid distribution tube, with both ends sealed, is horizontally installed below the liquid inlet tube and connected to the liquid inlet tube to receive the liquid from the liquid inlet tube. The liquid distribution tube has multiple overflow holes on its wall, which are designed to allow the liquid to overflow and be discharged from the liquid distribution tube. as well as A liquid distribution tank is installed parallel to the liquid distribution pipe on the liquid distribution pipe and at least partially accommodates the liquid distribution pipe to receive the liquid overflowing through the overflow hole and to allow the liquid to be discharged evenly from the outlet located in the liquid distribution tank along the length of the liquid distribution tank.

2. The liquid distributor according to claim 1, characterized in that, The geometric centers of the plurality of overflow holes are evenly spaced on a distribution line parallel to the first axis of the distribution tube and located below a horizontal plane passing through the first axis.

3. The liquid distributor according to claim 2, characterized in that, The multiple overflow holes are divided into two groups, and the two groups of overflow holes are located on both sides of the pipe wall at the lowest position of the liquid distribution pipe, and are symmetrically distributed with respect to the vertical plane passing through the first axis.

4. The liquid distributor according to any one of claims 1-3, characterized in that, One set of the liquid distribution components serves as a primary liquid distribution unit, and the other liquid distribution components serve as secondary liquid distribution units; The liquid inlet of the liquid distribution unit is connected to the liquid inlet pipe, and the liquid outlet of the first-stage liquid distribution unit is connected to the liquid distribution pipe of the second-stage liquid distribution unit through multiple connecting pipes, so that the liquid can be redistributed through the second-stage liquid distribution unit.

5. The liquid distributor according to claim 4, characterized in that, Multiple secondary liquid distribution units are arranged in parallel.

6. The liquid distributor according to claim 4, characterized in that, The liquid distribution tank has a U-shaped cross-section, and the liquid outlet is opened in the middle of the bottom of the liquid distribution tank along the length of the liquid distribution tank.

7. The liquid distributor according to claim 4, characterized in that, The secondary liquid distribution unit has one outlet, which is located along the length of the liquid distribution tank of the secondary liquid distribution unit.

8. An absorber, characterized in that, include: The tank body has an internal space for holding the contents; Heat exchange components are arranged within the accommodating space; as well as The liquid distributor as described in any one of claims 1-7 is arranged within the receiving space and located above the heat exchange assembly, such that the liquid discharged from the outlet of the liquid distribution tank of the lowest liquid distribution assembly absorbs the gas located in the tank body and forms a liquid film covering the heat exchange assembly on the heat exchange assembly, thereby exchanging heat between the liquid film and the medium in the heat exchange assembly and carrying away the heat generated by the liquid absorbing the gas.

9. The absorber according to claim 8, characterized in that, The heat exchange assembly includes multiple rows of horizontally arranged heat exchange tubes, and each row of heat exchange tubes includes multiple heat exchange tubes arranged vertically. The outlet of each liquid distribution tank in the secondary liquid distribution unit is located on the second axis of each row of heat exchange tubes, so that the liquid drips onto the heat exchange tubes.

10. The absorber according to claim 9, characterized in that, The tank includes: Casing; and Two sealing plates are arranged upright at both ends of the housing, forming the receiving space with the housing; Each heat exchange tube extends into the receiving space from one sealing plate and extends out from the other sealing plate, and each secondary liquid distribution unit is installed between the two sealing plates.

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