Flow-adjustable liquid distributor

Abstract

The utility model relates to the technical field of liquid distributors, in particular to a flow-adjustable liquid distributor which comprises an initial distribution module arranged at the top of a filler, the initial distribution module comprises a spraying mechanism and a flow regulation and control mechanism, a liquid inlet is formed in the spraying mechanism, and a liquid outlet is formed in the flow regulation and control mechanism. A plurality of adjustable liquid outlets are formed in the bottom of the liquid storage tank in an array manner; the flow regulation and control mechanism comprises a plurality of movable plugs and a driving structure, the movable plugs correspond to the adjustable liquid outlets one to one, and the driving structure is used for driving the movable plugs to move so that each movable plug can change the opening degree of the corresponding adjustable liquid outlet. In the working process of the flow-adjustable liquid distributor, the opening degree of the adjustable liquid outlet can be adaptively adjusted according to the fluctuation change of the gas flow, so that the flow of liquid entering the filler can be controlled in real time, the uniformity of gas-liquid distribution is ensured, and the absorption effect of a packed tower is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid distributors, in particular to a flow adjustable liquid distributor. Background Art

[0002] In recent years, the intensification of the greenhouse effect has had a serious impact on the human living environment. With the promotion of China's dual-carbon plan, the applicant has developed an absorbent for carbon dioxide gas. After multiple tests, this new absorbent can well absorb carbon dioxide gas and be desorbed under certain conditions, realizing the recycling of the absorbent. Both the absorption tower and the desorption tower are packed towers. When operating a packed tower, the uniform distribution of gas and liquid should be ensured on any cross-section; and the uniformity of gas distribution mainly depends on the uniformity of liquid distribution. Therefore, the initial uniform distribution of the absorbent before entering the packing layer is an important condition to ensure that the packed tower achieves the expected absorption effect.

[0003] During the operation of the equipment, the gas flow rate usually is unstable. The gas flow rate is generally small under startup and shutdown conditions, and fluctuates between the maximum condition and the normal condition at other times. The existing liquid distributors cannot adjust the usage amount of the liquid according to the change of the gas flow rate, resulting in the inability to ensure the uniformity of gas-liquid distribution, and further affecting the absorption effect of the packed tower. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a flow adjustable liquid distributor to solve the technical problem that the existing liquid distributor cannot adjust the usage amount of the liquid, resulting in the inability to ensure the uniformity of gas-liquid distribution, and further affecting the absorption effect of the packed tower.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A flow adjustable liquid distributor is used to be arranged in a tower body, and a packing is arranged in the tower body. The flow adjustable liquid distributor includes an initial distribution module used to be arranged on the top of the packing. The initial distribution module includes:

[0007] A spraying mechanism is provided with a liquid inlet, and a plurality of adjustable liquid outlets are arranged in an array at the bottom thereof;

[0008] A flow control mechanism includes a plurality of movable plugs and a driving structure. The plurality of movable plugs correspond to the plurality of adjustable liquid outlets one by one, and the driving structure is used to drive the plurality of movable plugs to move so that each movable plug changes the opening degree of the corresponding adjustable liquid outlet.

[0009] Further, the spraying mechanism includes:

[0010] The pipeline assembly includes a main pipe, a transverse branch pipe, and a longitudinal branch pipe, where: the main pipe is provided with the liquid inlet; the number of the transverse branch pipes is multiple and they are distributed in sequence along the axial direction of the main pipe; a plurality of the longitudinal branch pipes are sequentially connected to the lower side of each of the transverse branch pipes along its axial direction;

[0011] The liquid distribution assembly is arranged below the pipeline assembly; the liquid distribution assembly includes a plurality of liquid distribution units distributed in sequence along the axial direction of the main pipe, the plurality of liquid distribution units correspond to the plurality of transverse branch pipes one by one, and a plurality of adjustable liquid outlets are arranged at the bottom of each liquid distribution unit.

[0012] Further, each liquid distribution unit includes two communicating liquid storage tanks; a plurality of adjustable liquid outlet pipes are sequentially arranged along the length direction of the bottom of one of the liquid storage tanks, and one adjustable liquid outlet is arranged at the bottom of each adjustable liquid outlet pipe; the other liquid storage tank is arranged below the corresponding transverse branch pipe.

[0013] Further, in each liquid distribution unit, a plurality of connecting pipes are connected in communication between the two liquid storage tanks;

[0014] And / or, in each liquid distribution unit, a plurality of liquid distribution pipes are sequentially arranged along the length direction of the liquid storage tank located below the transverse branch pipe, the top of each liquid distribution pipe is closed and the bottom is open, and a plurality of vertical long holes are arranged on the pipe circumferential surface of each liquid distribution pipe located in the liquid storage tank.

[0015] Further, the movable plug is conical, and the movable plug is coaxially arranged with the corresponding adjustable liquid outlet; the driving structure is used to drive the movable plug to move in a direction approaching or departing from the corresponding adjustable liquid outlet.

[0016] Further, the driving structure includes a motor, a rotating shaft connected to the motor, a first bevel gear installed on the rotating shaft, a second bevel gear meshing with the first bevel gear, and a connecting frame connected to the second bevel gear, and the plurality of movable plugs are all installed on the connecting frame.

[0017] Further, the initial distribution module further includes an overflow mechanism, the overflow mechanism includes an overflow main pipe and a plurality of overflow branch pipes communicating with the overflow main pipe, and each overflow branch pipe communicates with one liquid storage tank.

[0018] Further, the initial distribution module further includes a uniform distribution plate group arranged below the spraying mechanism, and the uniform distribution plate group includes a plurality of uniform distribution plates distributed in sequence in the horizontal direction.

[0019] Further, it further includes a collection and redistribution module for being arranged between two adjacent packings. The collection and redistribution module includes a plurality of liquid collection tanks and a plurality of diversion plates, wherein:

[0020] The plurality of liquid collection tanks are arranged in a staggered manner. A plurality of liquid discharge holes are arranged at the bottom of each liquid collection tank in sequence along its length direction; the plurality of diversion plates are correspondingly connected to the bottoms of the plurality of liquid collection tanks one by one.

[0021] Further, the collection and redistribution module further includes a collection cone. The collection cone includes an enlarged diameter section and a reduced diameter section which are connected. The large end of the enlarged diameter section and the large end of the reduced diameter section face away from each other. The periphery of the interface between the enlarged diameter section and the reduced diameter section is connected to the upper end of the upper row of the liquid collection tanks.

[0022] The beneficial effects of the present utility model:

[0023] The present utility model provides a flow rate adjustable liquid distributor. The flow rate adjustable liquid distributor includes an initial distribution module for being arranged at the top of the packing. The initial distribution module includes a spraying mechanism and a flow rate regulation mechanism, wherein: a liquid inlet is arranged on the spraying mechanism, and a plurality of adjustable liquid outlets are arranged in an array at the bottom thereof; the flow rate regulation mechanism includes a plurality of movable plugs and a driving structure. The plurality of movable plugs correspond to the plurality of adjustable liquid outlets one by one. The driving structure is used to drive the plurality of movable plugs to move so that each movable plug changes the opening degree of the corresponding adjustable liquid outlet. During the working process of the flow rate adjustable liquid distributor, the opening degree of the adjustable liquid outlet can be adaptively adjusted according to the fluctuation of the gas flow rate. Therefore, the liquid flow rate entering the packing can be controlled in real time, thereby ensuring the uniformity of gas-liquid distribution and improving the absorption effect of the packed tower. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of the flow rate adjustable liquid distributor provided by the embodiment of the present utility model applied to a packed tower;

[0026] Figure 2 It is a schematic structural diagram of the initial distribution module provided by the embodiment of the present utility model;

[0027] Figure 3 It is a distribution schematic diagram of the pipeline assembly provided by the embodiment of the present utility model;

[0028] Figure 4 is Figure 2 An enlarged view at A;

[0029] Figure 5 is Figure 2 An enlarged view at B;

[0030] Figure 6 is a schematic structural view of a single liquid distribution unit provided by an embodiment of the present utility model;

[0031] Figure 7 is Figure 2 A cross-sectional view taken along C-C;

[0032] Figure 8 is Figure 7 An enlarged view at D;

[0033] Figure 9 is a distribution schematic view of a uniform distribution plate group provided by an embodiment of the present utility model;

[0034] Figure 10 is a schematic structural view of a collection and redistribution module provided by an embodiment of the present utility model;

[0035] Figure 11 is Figure 10 An enlarged view at E.

[0036] Icon:

[0037] 100 - Tower body;

[0038] 200 - Packing;

[0039] 1 - Initial distribution module;

[0040] 11 - Spraying mechanism; 111 - Pipeline assembly; 1111 - Main pipe; 1112 - Horizontal branch pipe; 1113 - Vertical branch pipe; 1114 - Liquid inlet; 112 - Liquid distribution assembly; 1121 - Liquid distribution unit; 11211 - Adjustable liquid outlet; 11212 - Liquid storage tank; 11213 - Adjustable liquid outlet pipe; 11214 - Connecting pipe; 11215 - Liquid distribution pipe;

[0041] 12 - Flow rate regulation mechanism; 121 - Movable plug; 122 - Driving structure; 1221 - Motor; 1222 - Rotating shaft; 1223 - First helical gear; 1224 - Second helical gear; 1225 - Connecting frame; 1226 - Driving rod; 1227 - Positioning rod; 123 - Guide post;

[0042] 13 - Overflow mechanism; 131 - Overflow main pipe; 132 - Overflow branch pipe;

[0043] 14 - Uniform distribution plate group;

[0044] 2 - Collection and Redistribution Module;

[0045] 21 - Liquid Collection Tank;

[0046] 22 - Flow - guiding Plate;

[0047] 23 - Collection Cone. Specific Embodiment

[0048] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work fall within the protection scope of the present utility model.

[0049] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] It should be noted that in the description of the present utility model, the terms "connection" and "installation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or connected through an intermediate medium; it can be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] Refer to Figure 1 According to [reference], an embodiment of the present utility model provides a flow - adjustable liquid distributor for being arranged in a tower body 100. A packing 200 is arranged in the tower body 100. The flow - adjustable liquid distributor includes an initial distribution module 1 for being arranged on the top of the packing 200. Refer to Figure 2 According to [reference], the initial distribution module 1 includes:

[0052] A spraying mechanism 11, which is provided with a liquid inlet 1114 and has a plurality of adjustable liquid outlets 11211 arranged in an array at its bottom;

[0053] The flow rate regulating mechanism 12 includes a plurality of movable plugs 121 and a driving structure 122. The plurality of movable plugs 121 correspond to the plurality of adjustable liquid outlets 11211 one by one. The driving structure 122 is used to drive the plurality of movable plugs 121 to move, so that each movable plug 121 changes the opening degree of the corresponding adjustable liquid outlet 11211.

[0054] It should be noted that during the movement of each movable plug 121, the flow area of the corresponding adjustable liquid outlet 11211 can be changed, so as to achieve the purpose of regulating the liquid output of the adjustable liquid outlet 11211.

[0055] During the operation of the above flow rate adjustable liquid distributor, the opening degree of the adjustable liquid outlet 11211 can be adaptively adjusted according to the fluctuation of the gas flow rate. Therefore, the liquid flow rate entering the packing 200 can be controlled in real time, so as to ensure the uniformity of gas-liquid distribution and improve the absorption effect of the packed tower.

[0056] Continue to refer to Figure 2 and Figure 3 , the spraying mechanism 11 includes:

[0057] The pipeline assembly 111 includes a main pipe 1111, a plurality of transverse branch pipes 1112 and a plurality of longitudinal branch pipes 1113. Among them, a liquid inlet 1114 is arranged on the main pipe 1111; the number of the transverse branch pipes 1112 is multiple and they are distributed in sequence along the axial direction of the main pipe 1111; a plurality of longitudinal branch pipes 1113 are sequentially connected to the lower side of each transverse branch pipe 1112 along its axial direction;

[0058] The liquid distribution assembly 112 is arranged below the pipeline assembly 111; the liquid distribution assembly 112 includes a plurality of liquid distribution units 1121 distributed in sequence along the axial direction of the main pipe 1111. The plurality of liquid distribution units 1121 correspond to the plurality of transverse branch pipes 1112 one by one. A plurality of adjustable liquid outlets 11211 are arranged at the bottom of each liquid distribution unit 1121.

[0059] Refer to Figure 3, in this embodiment, the pipeline assembly 111 is located at the top of the tower body 100. The main pipe 1111 horizontally passes through the tower wall of the tower body 100, and the liquid flows into the main pipe 1111 through the liquid inlet 1114. The main pipe 1111 and a plurality of transverse branch pipes 1112 are at the same horizontal height. The plurality of transverse branch pipes 1112 are equidistantly distributed along the axial direction of the main pipe 1111, and each transverse branch pipe 1112 is symmetrically arranged on both sides of the main pipe 1111. In this way, the liquid in the main pipe 1111 flows into each transverse branch pipe 1112 on both sides, so that the liquid in the main pipe 1111 is evenly distributed to the two sides with opposite directions, ensuring that the liquid volumes flowing into the two sides are equal and the time is the same. A number of uniformly distributed through holes are formed along the length direction directly below each transverse branch pipe 1112. A number of longitudinal branch pipes 1113 corresponding to the above-mentioned a number of through holes one by one are welded to the lower end of each transverse branch pipe 1112. The lower end of each longitudinal branch pipe 1113 extends into the liquid distribution unit 1121 opposite to it. In this way, the liquid in each transverse branch pipe 1112 vertically flows down along the longitudinal branch pipe 1113 below it.

[0060] The structure of the above pipeline assembly 111 enables the liquid entering the tower body 100 from the liquid inlet 1114 to be evenly distributed in a dot-like manner over the entire cross-section of the tower.

[0061] Refer to Figure 4 , each liquid distribution unit 1121 includes two communicating liquid storage tanks 11212. A plurality of adjustable liquid outlet pipes 11213 are sequentially arranged along the length direction of the bottom of one of the liquid storage tanks 11212, and an adjustable liquid outlet 11211 is arranged at the bottom of each adjustable liquid outlet pipe 11213. The other liquid storage tank 11212 is arranged below the corresponding transverse branch pipe 1112, and the lower end of each longitudinal branch pipe 1113 extends into the liquid storage tank 11212 opposite to it.

[0062] In this embodiment, all the liquid storage tanks 11212 are parallel and evenly distributed along the radial direction of the cross-section of the same tower body 100.

[0063] In the above structure, a liquid storage tank 11212 is arranged directly below each transverse branch pipe 1112. In this way, the liquid storage tank 11212 can receive and temporarily store the liquid flowing down from the pipeline assembly 111. The liquid in the liquid storage tank 11212 directly below the transverse branch pipe 1112 can enter the other liquid storage tank 11212 communicated with it and flow out through the adjustable liquid outlet pipe 11213 at the bottom of the other liquid storage tank 11212.

[0064] Based on the above structure, in each liquid distribution unit 1121, a number of connecting pipes 11214 are communicatively arranged between the two liquid storage tanks 11212. The function of the connecting pipes 11214 is to connect the two liquid storage tanks 11212 and ensure that the liquid levels in the two liquid storage tanks 11212 are equal. Taking one of the liquid distribution units 1121 as an example, when the adjustable liquid outlet 11211 is restricted in flow, the liquid level in the right liquid storage tank 11212 rises. At this time, the liquid in the right liquid storage tank 11212 can flow into the left liquid storage tank 11212 through the connecting pipe 11214, thereby preventing the right liquid storage tank 11212 from overflowing.

[0065] In this embodiment, the connecting pipes 11214 are arranged between the bottoms of the two liquid storage tanks 11212, enabling the two liquid storage tanks 11212 to always remain in a connected state.

[0066] Continue to refer to Figure 4 , in each liquid distribution unit 1121, a number of liquid distribution pipes 11215 are sequentially arranged along the length direction on the upper edge of the liquid storage tank 11212 located below the transverse branch pipe 1112. The top of each liquid distribution pipe 11215 is closed and the bottom is open. A number of vertical long holes are arranged on the circumferential surface of each liquid distribution pipe 11215 located inside the liquid storage tank 11212.

[0067] Specifically, each liquid distribution pipe 11215 is a vertical circular pipe, the upper end of which is blocked by a circular plate and the lower end is open. Each liquid distribution pipe 11215 is divided into upper and lower parts, where: the upper part of each liquid distribution pipe 11215 is located inside the corresponding liquid storage tank 11212, and a number of vertically long holes evenly distributed along the circumferential direction are arranged on the circumferential surface of the pipe. The upper end of the vertically long hole is adjacent to the upper end face of the liquid distribution pipe 11215, and the lower end of the vertically long hole is adjacent to the bottom of the liquid storage tank 11212. During operation, the liquid in the liquid storage tank 11212 located below the transverse branch pipe 1112 can enter the liquid distribution pipe 11215 through the vertically long holes, and then flow out from the lower end opening of the liquid distribution pipe 11215. The function of the liquid distribution pipe 11215 is to discharge the liquid in the corresponding liquid storage tank 11212 and ensure that the liquid at any height in the tank can flow out evenly.

[0068] Based on the above structure, all the liquid distribution pipes 11215 and all the adjustable liquid outlet pipes 11213 are arranged parallel to the axis direction of the tower body 100, so that the liquid entering the packing 200 is evenly distributed in a dot-like manner over the entire cross-section of the packing 200.

[0069] Continue to refer to Figure 4 , in this embodiment, the movable plug 121 is conical, the movable plug 121 is coaxially arranged with the corresponding adjustable liquid outlet 11211, and the driving structure 122 is used to drive the movable plug 121 to move in a direction approaching or away from the corresponding adjustable liquid outlet 11211.

[0070] Specifically, the movable plug 121 is a conical solid plug that is wider at the top and narrower at the bottom. It is coaxially arranged above the corresponding adjustable liquid outlet pipe 11213 and can move up and down under the drive of the drive structure 122 to change the length of the movable plug 121 extending into the adjustable liquid outlet pipe 11213 below it, thereby changing the flow area of the adjustable liquid outlet pipe 11213, and further realizing the real-time control of the liquid discharge amount of the adjustable liquid outlet 11211 at the lower end of the adjustable liquid outlet pipe 11213.

[0071] Referring to Figure 5 , the drive structure 122 includes a motor 1221, a rotating shaft 1222 connected to the motor 1221, a first helical gear 1223 installed on the rotating shaft 1222, a second helical gear 1224 meshing with the first helical gear 1223, and a connection frame 1225 connected to the second helical gear 1224. A plurality of movable plugs 121 are all installed on the connection frame 1225. Optionally, the motor 1221 is connected to the rotating shaft 1222 through a speed reducer.

[0072] Specifically, both ends of the rotating shaft 1222 are rotatably connected to the tower wall of the tower body 100 and are mechanically sealed with the tower wall through structures such as sealing rings and bearings to prevent the fluid in the tower body 100 from flowing out of the tower from the connection position of the rotating shaft 1222. The number of helical gears is two groups, which are respectively arranged at both ends of the rotating shaft 1222. Each group of helical gears includes a first helical gear 1223 and a second helical gear 1224 that mesh with each other and have a helix angle of 45°. Through the first helical gear 1223 and the second helical gear 1224, the horizontal movement of the rotating shaft 1222 can be converted into the up and down movement of the connection frame 1225; setting two groups of helical gears can ensure the balance and stability of the up and down movement of the connection frame 1225.

[0073] Furthermore, the drive structure 122 further includes a plurality of drive rods 1226. The upper ends of the plurality of drive rods 1226 are all connected to the connection frame 1225, and the lower ends of the plurality of drive rods 1226 are correspondingly connected to a plurality of movable plugs 121 one by one. In this way, during the up and down movement of the connection frame 1225, all the movable plugs 121 can be driven to move synchronously. In this embodiment, the connection frame 1225 is a mesh frame, and the upper ends of all the drive rods 1226 are connected to the connection frame 1225, so the movement of all the movable plugs 121 can be ensured to be consistent.

[0074] In the above structure, there is also a transmission structure connected between the second helical gear 1224 and the connection frame 1225. The transmission structure is used to convert the rotational movement of the second helical gear 1224 into the up and down movement of the connection frame 1225.

[0075] Exemplarily, the transmission structure includes a screw shaft, on which a second bevel gear 1224 is fixedly sleeved, and the screw shaft passes through and is connected to a nut on the connecting frame 1225. Thus, during the startup of the motor 1221, the motor 1221 drives the rotating shaft 1222 to rotate, and the rotating shaft 1222 drives the screw shaft to rotate through the first bevel gear 1223 and the second bevel gear 1224, thereby driving the connecting frame 1225 to move up and down; the connecting frame 1225 can drive all the movable plugs 121 to move up and down, so as to realize the real-time control of the liquid output of the adjustable liquid outlet pipe 11213.

[0076] Continuing to refer to Figure 5 , the flow rate regulating mechanism 12 further includes a plurality of guide posts 123. A plurality of sliding holes are provided on the connecting frame 1225, and the plurality of sliding holes correspond one by one and are slidably sleeved on the plurality of guide posts 123. Specifically, the plurality of guide posts 123 are distributed along the circumferential direction of the tower body 100 and are all welded to the inner wall of the tower body 100. Their function is to ensure that the connecting frame 1225 moves along a fixed track, prevent the connecting frame 1225 from undergoing circumferential torsion, and indirectly prevent each movable plug 121 from disengaging from the corresponding adjustable liquid outlet pipe 11213.

[0077] Referring to Figure 6 , the driving structure 122 further includes a plurality of positioning rods 1227, and the plurality of positioning rods 1227 are correspondingly arranged in a plurality of adjustable liquid outlet pipes 11213; the positioning rods 1227 are T-shaped rods, the upper ends of which are connected to the corresponding movable plugs 121, and the left and right ends of which are respectively slidably arranged in rectangular grooves on both sides of the adjustable liquid outlet pipe 11213. The function of the positioning rod 1227 is to enable the movable plug 121 to move on a fixed vertical track and ensure the concentricity between the adjustable liquid outlet pipe 11213 and the movable plug 121.

[0078] Optionally, the upper end of each movable plug 121 is hinged to the corresponding driving rod 1226, and the lower end of each movable plug 121 is hinged to the corresponding positioning rod 1227.

[0079] Referring to Figure 7 and Figure 8 , the initial distribution module 1 further includes an overflow mechanism 13. The overflow mechanism 13 includes an overflow main pipe 131 and a plurality of overflow branch pipes 132 communicating with the overflow main pipe 131. Each overflow branch pipe 132 communicates with a liquid storage tank 11212.

[0080] Specifically, a number of holes are opened in the upper part of the overflow main pipe 131 for connecting all the overflow branch pipes 132; one end of the overflow main pipe 131 extends outside the tower, and its function is to collect the excessive absorbent and discharge it outside the tower. One end of each overflow branch pipe 132 is connected to the upper part of a liquid storage tank 11212, and the other end is connected to the overflow main pipe 131; all the overflow branch pipes 132 are located in the same vertical section parallel to the tower axis for easy manufacturing and installation. The function of the overflow mechanism 13 is to divert the excessive absorbent in the liquid storage tank 11212 to prevent the overflow from causing the redundant absorbent to enter the packing layer; in addition, the absorbent in the overflow mechanism 13 can be recycled.

[0081] Continue to refer to Figure 2 , the initial distribution module 1 further includes a uniform distribution plate group 14 arranged below the spraying mechanism 11, and the uniform distribution plate group 14 includes a plurality of uniform distribution plates arranged in sequence along the horizontal direction.

[0082] Combined with Figure 2 and Figure 9 , the uniform distribution plate group 14 is specifically located below the overflow mechanism 13; the plurality of uniform distribution plates are parallel and equally spaced, and both ends of each uniform distribution plate are connected to the tower wall. The uniform distribution plate can be a steel plate, which is formed into a two-stage structure by bending. The upper section of the uniform distribution plate is vertical and forms an obtuse angle with the lower section of the uniform distribution plate, and the obtuse angle is between 150° and 170°. The function of the uniform distribution plate group 14 is to reduce the flow velocity of the absorbent, so that the absorbent flowing down from the upper part impacts the bending plate and then is linearly uniformly distributed, and at the same time has a uniform guiding effect on the rising gas.

[0083] Optionally, the arrangement direction of the uniform distribution plate is perpendicular to the length direction of the liquid storage tank 11212.

[0084] In summary, in the initial distribution module 1 provided by the present application, the real-time control of the outflow of the adsorbent liquid is realized through the flow rate regulating mechanism 12, thereby ensuring the uniformity of the gas-liquid distribution and improving the adsorption effect. The main pipe 1111 and the transverse branch pipes 1112 are at the same horizontal height, canceling the traditional primary distribution tank and secondary distribution tank, thereby saving the vertical space inside the tower, effectively reducing the tower height, and saving the initial investment of the project. The velocity of the absorbent liquid entering each transverse branch pipe 1112 is symmetric about the vertical direction of the center line of the main pipe 1111. At the same time, the longitudinal branch pipes 1113 are uniformly distributed on the entire cross-section of the tower body, and the adjustable liquid outlet pipe 11213 and the liquid distribution pipe 11215 at the bottom of the liquid storage tank 11212 are also uniformly distributed on the entire cross-section of the tower body. These uniform structures ensure that the absorbent liquid is point-wise uniformly distributed on the entire cross-section of the tower body. The uniform distribution plate group 14 changes the uniform point-wise distribution of the absorbent liquid into a linear distribution, making the distribution of the absorbent liquid more regular before entering the packing 200. When the flow rate of the absorbent liquid changes, the landing point and the flow rate of the absorbent liquid entering the packing 200 remain relatively stable.

[0085] When the packing 200 in the tower body 100 reaches a certain height, the distribution of the absorbent will become uneven. To improve the absorption efficiency, multiple layers of packing 200 are usually arranged in the tower body 100. The existing liquid distributors can only achieve the initial distribution of the liquid and cannot ensure the uniformity of the liquid distribution in the lower packing 200.

[0086] Based on this, referring to Figure 10 , the flow rate adjustable liquid distributor provided in this application further includes a collection and redistribution module 2 for being arranged between two adjacent packings 200. In this application, the role of the initial distribution module 1 is to evenly distribute the liquid onto the packing 200 at the top of the tower. The role of the collection and redistribution module 2 is to play a connecting role between two adjacent layers of packing 200. On the one hand, it collects the liquid flowing down from the upper packing 200, and on the other hand, it flows the collected liquid down again and evenly distributes it on the surface of the lower packing 200, ensuring the uniform reaction of gas and liquid and improving the efficiency of the absorbent.

[0087] Referring to Figure 11 , the collection and redistribution module 2 includes a plurality of liquid collection tanks 21. The plurality of liquid collection tanks 21 are arranged in a staggered manner, and a plurality of liquid discharge holes are arranged at the bottom of each liquid collection tank 21 in sequence along its length direction.

[0088] In the above structure, the liquid collection tanks 21 are arranged in a staggered manner, and there is a certain overlap between every two adjacent liquid collection tanks 21 in the width direction, so as to ensure that all the falling absorbent can be collected.

[0089] Further, the cross-section of the liquid collection tank 21 is V-shaped, and both ends in its length direction are blocked by vertical baffles, so that it has a certain liquid holding capacity; a plurality of evenly distributed liquid discharge holes are arranged on one side of the liquid collection tank 21 close to the bottom, and the collected liquid is evenly distributed through the liquid discharge holes and then flows into the lower packing 200.

[0090] In this embodiment, the liquid collection tank 21 adopts an inclined wall structure, which ensures that the liquid falls along the inclined wall surface, reducing the kinetic energy of the liquid entering the cup; secondly, the direct impact of the liquid on the bottom of the tank becomes an oblique impact, reducing the instantaneous momentum change of the liquid; furthermore, the resistance caused by the boundary viscous layer near the inclined wall also reduces the speed of the liquid reaching the bottom of the tank. Therefore, the relative speed of the liquid is reduced during the process of flowing into the tank along the inclined wall, making the whole process as close to a quasi-static state as possible, thereby reducing the generation of bubbles.

[0091] Further, the collection and redistribution module 2 further includes a plurality of flow guiding plates 22, and the plurality of flow guiding plates 22 are connected to the bottoms of the plurality of liquid collection tanks 21 in a one-to-one correspondence.

[0092] Specifically, the flow deflector 22 can be formed into a three-section structure by bending a steel plate. Among them: the upper and lower sections of the flow deflector 22 are in the vertical direction, and the middle section of the flow deflector 22 is an inclined plate and is connected to the upper section at an obtuse angle. A number of evenly distributed drain holes are provided on the side of the liquid collecting tank 21 facing the concave surface of the flow deflector 22. The function of the flow deflector 22 is to make the gas rise along the plate wall, reduce liquid droplet entrainment, and the absorbent liquid flows downward along the plate wall and flows into the lower packing in a uniform state.

[0093] Furthermore, the collection and redistribution module 2 further includes a collection cone 23. The collection cone 23 includes a diameter-expanding section and a diameter-reducing section connected to each other. The large ends of the diameter-expanding section and the diameter-reducing section face away from each other, and the periphery of the interface between the diameter-expanding section and the diameter-reducing section is connected to the upper end of the upper row of liquid collecting tanks 21.

[0094] Specifically, the outer diameters of the upper and lower ends of the collection cone 23 are both equal to the inner diameter of the tower body 100 and are both connected to the tower wall; the middle part of the collection cone 23 has a constriction, which is the interface between the diameter-expanding section and the diameter-reducing section, and its diameter is smaller; a diameter-reducing section is formed between the upper end of the collection cone 23 and this constriction, a diameter-expanding section is formed between this constriction and the lower end of the collection cone 23, and this constriction is at the same height as the upper end of the liquid collecting tank 21. The function of the upper diameter-reducing section is to collect the absorbent flowing down from the upper packing 200 and make the absorbent flow into the liquid collecting tank 21 along the inner wall of the cone; the function of the lower diameter-expanding section is to make the rising flue gas rise along the inclined wall and enter the upper packing 200 to prevent vortex generation at the collection cone 23.

[0095] Optionally, the peripheries of the upper and lower ends of the collection cone 23 are both welded and fixed to the tower wall.

[0096] In summary, through the newly added collection and redistribution module 2 in this application, the collection and re-uniform distribution of the absorbent are realized when there are two or more layers of packing 200 in the tower. The inclined wall structure of the liquid collecting tank 21 changes the original direct impact of the absorbent into an oblique impact, reducing the instantaneous momentum change of the absorbent and also reducing the speed of the absorbent reaching the bottom of the tank, making the entire falling process as close to a quasi-static state as possible, thereby reducing the generation of bubbles. The liquid collecting tank 21 is arranged in a scattered manner, ensuring that the collection and redistribution module 2 can collect all the falling absorbent, and the gas can pass smoothly between the tanks, and it also has the function of rectifying the gas. On the one hand, the flow deflector 22 at the lower part of the liquid collecting tank 21 makes the absorbent flow downward along the plate wall and flow into the lower packing 200 in a uniform state. On the other hand, when the gas rises along the absorbent, after the liquid droplets collide with the plate wall and converge into liquid droplets, they can uniformly fall along the plate wall, reducing entrainment of mist and foam.

[0097] Further analyzing the above structure, in the present application, a multi-stage uniform distribution structure is formed from top to bottom within the tower body 100 through a plurality of horizontal branch pipes 1112, a plurality of vertical branch pipes 1113, a plurality of liquid storage tanks 11212, a plurality of adjustable liquid outlet pipes 11213, a plurality of liquid distribution pipes 11215, a uniform distribution plate group 14, a plurality of liquid collection tanks 21, and a plurality of flow guiding plates 22. By setting the multi-stage uniform distribution structure, it is ensured that the liquid enters each stage of the packing 200 evenly.

[0098] Through the above structure, the liquid distributor provided in the present application has the advantages of simple structure, small pressure drop, uniform force, light weight, small occupation of the space inside the tower, real-time adjustable flow rate, and less liquid entrainment, thereby being able to improve the absorption efficiency of the packed tower.

[0099] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flow-adjustable liquid distributor, used to be arranged in a tower body (100), wherein a filler (200) is arranged in the tower body (100), characterized in that: The flow-adjustable liquid distributor comprises an initial distribution module (1) for being arranged on the top of the filler (200), and the initial distribution module (1) comprises: A spray mechanism (11) having a liquid inlet (1114) disposed thereon and a plurality of adjustable liquid outlets (11211) disposed in an array at its bottom; The flow control mechanism (12) comprises a plurality of movable plugs (121) and a driving structure (122), wherein the plurality of movable plugs (121) correspond one-to-one to the plurality of adjustable liquid outlets (11211), and the driving structure (122) is used to drive the plurality of movable plugs (121) to move so that each movable plug (121) changes the opening of the corresponding adjustable liquid outlet (11211).

2. The flow-adjustable liquid distributor according to claim 1, characterized in that: The spray mechanism (11) comprises: A pipeline assembly (111), comprising a main pipe (1111), a transverse branch pipe (1112) and a longitudinal branch pipe (1113), wherein: the main pipe (1111) is provided with the liquid inlet (1114); the transverse branch pipes (1112) are multiple in number and are sequentially distributed along the axial direction of the main pipe (1111); the lower side of each transverse branch pipe (1112) is sequentially connected to the plurality of longitudinal branch pipes (1113) along the axial direction thereof; A liquid distribution component (112) is arranged below the pipeline component (111); the liquid distribution component (112) comprises a plurality of liquid distribution units (1121) distributed in sequence along the axial direction of the main pipe (1111), the plurality of liquid distribution units (1121) correspond one-to-one to the plurality of transverse branch pipes (1112), and a plurality of adjustable liquid outlets (11211) are arranged at the bottom of each of the liquid distribution units (1121).

3. The flow-adjustable liquid distributor according to claim 2, characterized in that: Each of the liquid distribution units (1121) comprises two interconnected liquid storage tanks (11212); a plurality of adjustable liquid outlet pipes (11213) are sequentially arranged at the bottom of one of the liquid storage tanks (11212) along its length direction, and an adjustable liquid outlet port (11211) is arranged at the bottom of each adjustable liquid outlet pipe (11213); and the other liquid storage tank (11212) is arranged below the corresponding transverse branch pipe (1112).

4. The flow-adjustable liquid distributor according to claim 3, characterized in that: In each of the liquid distributing units (1121), a plurality of connecting pipes (11214) are provided to connect the two liquid storage tanks (11212); And / or, in each of the liquid distribution units (1121), a plurality of liquid distribution tubes (11215) are sequentially arranged along the length direction of the liquid storage tank (11212) located below the transverse branch pipe (1112), each of the liquid distribution tubes (11215) is closed at the top and open at the bottom, and each of the liquid distribution tubes (11215) is provided with a plurality of vertical long holes on the circumferential surface of the tube located in the liquid storage tank (11212).

5. The flow-adjustable liquid distributor according to claim 1, characterized in that: The movable plug (121) is conical, and is coaxially arranged with the corresponding adjustable liquid outlet (11211); the driving structure (122) is used to drive the movable plug (121) to move in a direction approaching or moving away from the corresponding adjustable liquid outlet (11211).

6. The flow-adjustable liquid distributor according to claim 5, characterized in that: The driving structure (122) comprises a motor (1221), a rotating shaft (1222) connected to the motor (1221), a first bevel gear (1223) mounted on the rotating shaft (1222), a second bevel gear (1224) meshing with the first bevel gear (1223), and a connecting frame (1225) connected to the second bevel gear (1224), and the plurality of movable plugs (121) are all mounted on the connecting frame (1225).

7. The flow-adjustable liquid distributor according to claim 3, characterized in that: The initial distribution module (1) further comprises an overflow mechanism (13), wherein the overflow mechanism (13) comprises an overflow main pipe (131) and a plurality of overflow branch pipes (132) connected to the overflow main pipe (131), and each of the overflow branch pipes (132) is connected to one of the liquid storage tanks (11212).

8. The flow-adjustable liquid distributor according to claim 1, characterized in that: The initial distribution module (1) further comprises a uniform distribution plate group (14) arranged below the spray mechanism (11), and the uniform distribution plate group (14) comprises a plurality of uniform distribution plates sequentially distributed in a horizontal direction.

9. The flow-adjustable liquid distributor according to any one of claims 1 to 8, characterized in that: It also includes a collection and redistribution module (2) for being arranged between two adjacent fillers (200), the collection and redistribution module (2) comprising a plurality of liquid collecting tanks (21) and a plurality of guide plates (22), wherein: The plurality of liquid collecting grooves (21) are arranged in a staggered manner, and the bottom of each liquid collecting groove (21) is provided with a plurality of drainage holes distributed in sequence along the length direction thereof; The plurality of guide plates (22) are connected to the bottoms of the plurality of liquid collecting tanks (21) in a one-to-one correspondence.

10. The flow-adjustable liquid distributor according to claim 9, characterized in that: The collection and redistribution module (2) further comprises a collection cone (23), wherein the collection cone (23) comprises an expanding section and a reducing section connected to each other, wherein the large end of the expanding section and the large end of the reducing section are mutually divergent, and the interface periphery of the expanding section and the reducing section is connected to the upper end of the liquid collecting trough (21) in the upper row.

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