Chlorine scrubber for chlorine treatment

Abstract

This utility model relates to the field of chlorine scrubbing tower technology, specifically a chlorine scrubbing tower for chlorine treatment. It includes a tower body, an air inlet pipe at the bottom of the side wall of the tower body, an air inlet grille installed at the bottom of the interior of the tower body, interconnected air inlet channels inside the air inlet grille, multiple jet nozzles at the top of the air inlet grille connected to the air inlet channels, multiple packing layers above the air inlet grille, the flow aperture of the multiple packing layers gradually decreasing from bottom to top, a gas mixing and guiding structure between two adjacent packing layers, a water distribution structure above the upper packing layer, the input end of the water distribution structure extending to the outside of the tower body and connected to a liquid inlet pipe, a demister above the water distribution structure, and an air outlet pipe at the top of the tower body above the demister. This utility model improves the uniformity of air intake and water replenishment, improves the uniformity of chlorine flow, and enhances scrubbing and purification performance.

Description

Technical Field

[0001] This utility model relates to the field of chlorine scrubbing tower technology, specifically a chlorine scrubbing tower for chlorine treatment. Background Technology

[0002] In the production of caustic soda, the use of ion-exchange membrane electrolysis generates a lot of chlorine gas; Chlorine is an important industrial raw material widely used in chemical, water treatment, and pharmaceutical fields. However, it is highly corrosive and toxic, and must undergo strict purification treatment before it can be discharged or reused.

[0003] Traditional chlorine scrubbing towers often use a single-layer packing structure, which has problems such as uneven gas distribution and insufficient gas-liquid contact, resulting in low purification efficiency and the formation of dead zones.

[0004] In addition, uneven distribution of the washing liquid also affects the mass transfer effect between chlorine and liquid, further reducing the purification efficiency.

[0005] Some scrubbing towers lack effective pretreatment structures, causing large particles of impurities to directly enter the packing layer, exacerbating equipment wear and the operational burden on the packing, and shortening the service life of the packing. Currently, although improved scrubbing towers have been developed to enhance performance through optimized water distribution or the addition of demisters, they still suffer from drawbacks such as short gas flow paths and poor mixing. Therefore, there is an urgent need for a scrubbing tower capable of achieving uniform chlorine distribution and efficient scrubbing to address these technical challenges. Utility Model Content

[0006] The purpose of this invention is to provide a chlorine scrubbing tower for chlorine treatment, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a chlorine scrubbing tower for chlorine treatment, comprising a tower body, an air inlet pipe provided at the bottom of the side wall of the tower body, an air inlet grille installed at the bottom of the interior of the tower body, interconnected air inlet channels opened inside the air inlet grille, the input end of the air inlet channel inside the air inlet grille being connected to the air inlet pipe, multiple jet nozzles provided at the top of the air inlet grille, the jet nozzles being connected to the air inlet channels, multiple packing layers provided above the air inlet grille, the flow aperture of the multiple packing layers gradually decreasing from bottom to top, a gas mixing and guiding structure provided between two adjacent packing layers, a water distribution structure provided above the upper packing layer, the input end of the water distribution structure extending to the outside of the tower body and connected to a liquid inlet pipe, a demister provided above the water distribution structure, and an air outlet pipe provided at the top of the tower body above the demister.

[0008] The present invention is further configured such that a sedimentation hopper is provided at the bottom of the tower body, a slag discharge pipe is provided at the bottom of the sedimentation hopper, and a control valve is provided on the slag discharge pipe. The impurity particles intercepted by washing can fall into the sedimentation hopper under their own gravity for sedimentation. By setting up the sedimentation hopper, the stratification between the intercepted dust particles and the downward flowing chlorine-containing liquid can be effectively achieved, effectively preventing the mud and sand formed by the dust particles from being discharged.

[0009] The present invention is further configured such that a rinsing pipe is provided on the inner wall of the sedimentation tank, and multiple high-pressure punches are provided on the rinsing pipe along the circumference. A liquid delivery pipe is provided extending outward from the input end of the rinsing pipe, and the rinsing liquid is delivered to the rinsing pipe through the liquid delivery pipe and sprayed out through the high-pressure punches. In this way, the sedimentation tank can be rinsed, and the sediment residue in the sedimentation tank can be reduced.

[0010] The present invention is further configured such that the water distribution structure includes water distribution pipes, the water distribution pipes are distributed in two layers with staggered vertical distribution, and multiple water distribution nozzles are provided below each water distribution pipe. The output end of the liquid inlet pipe is connected to the input end of the two layers of water distribution pipes. The staggered arrangement of the upper and lower layers of water distribution pipes can improve the uniformity of water distribution, thereby improving the sufficient and uniform contact between the washing liquid and chlorine gas, and improving the purification and washing effect.

[0011] The present invention is further provided that an inspection port is provided at the bottom of the side wall of the tower body, and a manhole cover is provided at the inspection port to facilitate maintenance operations.

[0012] The present invention is further configured such that the gas mixing and guiding structure includes spiral guiding blades, and a spiral guiding cavity is formed between the spiral guiding blades and the inner wall of the tower body. Through the cooperation of the spiral guiding blades and the spiral guiding cavity, chlorine gas can be discharged from the lower packing layer and enter the spiral guiding cavity, and flow along the spiral guiding cavity, so that the rising chlorine gas is mixed, thereby avoiding the situation where the purification and washing area is limited due to the straight rise of chlorine gas, and the purification and washing dead corners are formed. The spiral structure can extend the gas flow time in the tower body and improve the washing and purification effect.

[0013] The present invention is further configured such that a circulating chlorine water outlet is provided at the bottom of the side wall of the tower body. The circulating chlorine water outlet is located above the air inlet grille, and the chlorine-containing solution formed by spraying is discharged outward. By setting the circulating chlorine water outlet above the air inlet grille, the solution accumulates at the bottom of the tower body, and the liquid level is above the air inlet grille, so that the chlorine gas flow blown out by the air inlet grille can directly contact the solution to achieve preliminary washing and purification, reduce the pressure during subsequent chlorine gas washing and purification, and the dust and impurities can be directly washed and precipitated in the sedimentation hopper, reducing the working pressure of the subsequent packing layer.

[0014] The present invention is further provided that a sight glass is provided on the side wall of the tower body, so as to facilitate observation of the packing status, liquid distribution and gas-liquid flow in the tower body, and to facilitate monitoring of the operating status and timely detection of blockages or abnormalities.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. Improved uniformity and purification effect of chlorine gas washing. This invention utilizes an inlet grille and jet nozzle design to evenly distribute chlorine gas and spray it into the bottom of the tower, ensuring full contact with the accumulated chlorine-containing washing liquid for preliminary washing and effective interception of dust particles and other impurities. The multi-layered packing layer employs a progressively smaller pore size design, combined with a spiral flow guiding structure, to extend the chlorine gas residence time and enhance mixing, avoiding dead zones in the washing process. The water distribution structure uses double-layered, staggered water pipes and nozzles to ensure even distribution of the washing liquid, further improving gas-liquid contact efficiency and significantly enhancing the overall washing uniformity and purification effect of the chlorine gas.

[0016] 2. Optimize structural design to reduce maintenance difficulty. A sedimentation hopper and flushing pipe are installed at the bottom of the tower to effectively separate and remove sediment deposited during the washing process, reducing the risk of clogging. The design of the inspection port and manhole cover facilitates daily maintenance and troubleshooting, while the sight glass allows for real-time observation of the packing material status and liquid distribution within the tower. The circulating chlorine water outlet is located above the air inlet grille, ensuring proper accumulation and recycling of the washing liquid while reducing the burden on the packing layer. These optimized designs significantly reduce the difficulty of equipment maintenance and operating costs. 3. In this invention, the combination of spiral guide vanes and spiral guide cavity not only extends the chlorine gas flow path but also improves the uniformity of gas mixing, avoiding the problem of incomplete local purification. The demister ensures that the discharged gas is dry and clean. This invention has a compact overall structure and clearly defined functions, ensuring high purification efficiency while improving the stability and long-term reliability of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the chlorine scrubbing tower for chlorine treatment in this utility model; Figure 2 This is a cross-sectional view of the overall internal structure of the present invention. Figure 1 ; Figure 3 This is a cross-sectional view of the overall internal structure of the present invention. Figure 2 ; Figure 4 This is a cross-sectional view of the overall structure of the air intake grille in this utility model; Figure 5 This is a schematic diagram of the overall water distribution structure in this utility model.

[0018] The components represented by each number in the attached diagram are listed below: 1. Tower body; 2. Inlet pipe; 3. Inlet grille; 4. Inlet channel; 5. Jet nozzle; 6. Packing layer; 7. Liquid inlet pipe; 8. Demister; 9. Outlet pipe; 10. Sedimentation hopper; 11. Slag discharge pipe; 12. Control valve; 13. Flushing pipe; 14. High-pressure jet; 15. Liquid delivery pipe; 16. Water distribution pipe; 17. Water distribution nozzle; 18. Inspection port; 19. Manhole cover; 20. Spiral guide vane; 21. Spiral guide cavity; 22. Circulating chlorine water outlet; 23. Sight glass. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides a technical solution: Please refer to Figures 1-5 A chlorine scrubbing tower for chlorine treatment includes a tower body 1. An air inlet pipe 2 is provided at the bottom of the side wall of the tower body 1. An air inlet grille 3 is installed at the bottom of the interior of the tower body 1. An air inlet channel 4 is opened inside the air inlet grille 3 and is connected to the air inlet pipe 2. Multiple jet nozzles 5 are provided at the top of the air inlet grille 3 and are connected to the air inlet channel. Multiple packing layers 6 are provided above the air inlet grille 3. The flow aperture of the multiple packing layers 6 gradually decreases from bottom to top. A gas mixing and guiding structure is provided between two adjacent packing layers 6. A water distribution structure is provided above the upper packing layer 6. The input end of the water distribution structure extends to the outside of the tower body 1 and is connected to a liquid inlet pipe 7. A demister 8 is provided above the water distribution structure. An air outlet pipe 9 is provided at the top of the tower body 1 above the demister 8.

[0021] Please see Figures 1-5 As one implementation of the tower body 1: a sedimentation hopper 10 is provided at the bottom of the tower body 1, and a slag discharge pipe 11 is provided at the bottom of the sedimentation hopper 10. A control valve 12 is provided on the slag discharge pipe 11. The dust particles intercepted by the washing can fall into the sedimentation hopper 10 under their own gravity for sedimentation. By setting the sedimentation hopper 10, the stratification between the intercepted dust particles and the downward flowing chlorine-containing liquid can be effectively achieved, effectively preventing the silt formed by the dust particles from being discharged with the chlorine-containing washing liquid.

[0022] Please see Figures 1-5As one embodiment of the sedimentation tank 10: a flushing pipe 13 is provided on the inner wall of the sedimentation tank 10, and multiple high-pressure punches 14 are provided along the circumference of the flushing pipe 13. A liquid delivery pipe 15 is provided extending outward from the input end of the flushing pipe 13. The flushing liquid is delivered to the flushing pipe 13 through the liquid delivery pipe 15 and sprayed out through the high-pressure punches 14. In this way, the sedimentation tank 10 can be flushed, reducing the residue of sedimented silt in the sedimentation tank 10.

[0023] Please see Figures 1-5 As one implementation of the water distribution structure: the water distribution structure includes water distribution pipes 16, which are arranged in two layers with staggered vertical distribution. Each water distribution pipe 16 has multiple water distribution nozzles 17 below it. The output end of the liquid inlet pipe 7 is connected to the input end of the two layers of water distribution pipes 16. The staggered arrangement of the upper and lower layers of water distribution pipes 16 can improve the uniformity of water distribution, thereby improving the sufficient and uniform contact between the washing liquid and chlorine gas, and improving the purification and washing effect.

[0024] Please see Figures 1-5 As one embodiment of the tower body 1: an inspection port 18 is provided at the bottom of the side wall of the tower body 1, and a manhole cover 19 is provided at the inspection port 18 to facilitate maintenance operations.

[0025] Please see Figures 1-5 As one implementation of the gas mixing and guiding structure: The gas mixing and guiding structure includes a spiral guiding blade 20, and a spiral guiding cavity 21 is formed between the spiral guiding blade 20 and the inner wall of the tower body 1. Through the cooperation of the spiral guiding blade 20 and the spiral guiding cavity 21, chlorine gas can be discharged from the lower packing layer 6 and enter the spiral guiding cavity 21, and flow along the spiral guiding cavity 21, so that the rising chlorine gas is mixed, thereby avoiding the situation where the purification area is limited and dead corners are formed due to the straight rise of chlorine gas. The spiral structure can prolong the gas flow time in the tower body 1 and improve the washing and purification effect.

[0026] Please see Figures 1-5 As one embodiment of the tower body 1: A circulating chlorine water outlet 22 is provided at the bottom of the side wall of the tower body 1. The circulating chlorine water outlet 22 is located above the air inlet grille 3, and the chlorine-containing solution formed by spraying is discharged outward. By setting the circulating chlorine water outlet 22 above the air inlet grille 3, the solution accumulates at the bottom of the tower body 1, and the liquid level is located above the air inlet grille 3, so that the chlorine gas flow blown out by the air inlet grille 3 can directly contact the solution to achieve preliminary washing and purification, reduce the pressure during subsequent chlorine gas washing and purification, and the dust and impurities can be directly washed and precipitated in the sedimentation hopper 10, reducing the operating pressure of the subsequent packing layer 6.

[0027] Please see Figures 1-5As one implementation of the tower body 1: a sight glass 23 is provided on the side wall of the tower body 1. The sight glass 23 facilitates the observation of the packing status, liquid distribution and gas-liquid flow inside the tower body 1, and facilitates the monitoring of the operating status and timely detection of blockages or abnormalities.

[0028] In summary, the working principle and specific workflow of this utility model are as follows: In use, the chlorine gas to be washed is transported to the air intake grille 3 through the air intake pipe 2, and evenly distributed in the air intake grille 3 through the air intake channel 4, and then evenly sprayed out through the jet nozzle 5. The sprayed chlorine gas will first come into contact with the chlorine-containing washing liquid accumulated at the bottom of tower 1, thus achieving preliminary chlorine washing; This step can effectively intercept and clean up impurities such as dust particles in chlorine gas, reduce the working pressure of subsequent packing layer 6, and at the same time improve the utilization efficiency of washing liquid. Then, the gas rises to the packing layer 6 below and gradually rises along the packing layer 6, completing deeper washing in sequence. During this process, after the chlorine gas is discharged from the lower packing layer 6, it will enter the corresponding spiral guide cavity 21 and flow along the spiral guide cavity 21, so that the rising chlorine gas is mixed, thereby avoiding the situation where the purification area is limited and dead corners are formed due to the straight rise of chlorine gas. Meanwhile, the spiral structure can prolong the gas flow time in tower 1, thereby improving the washing and purification effect; This invention features a multi-layered packing layer 6 with gradually decreasing pore size, which progressively enhances the chlorine's cleaning effect and improves its cleaning performance. During the inlet and rise of the chlorine gas, the detergent is simultaneously delivered to the water distribution pipe 16 through the liquid inlet pipe 7, and sprayed evenly downwards under the action of the water distribution nozzle 17, so as to fully contact the rising chlorine gas and achieve chlorine washing. Afterwards, the chlorine gas is dried by the demister 8 and then discharged through the upper outlet pipe 9, while the chlorine-containing washing liquid accumulated at the bottom is discharged through the circulating chlorine water outlet 22.

[0029] In this utility model, if it is necessary to install relevant detection sensor components, all of them shall be implemented using existing technologies; In this utility model, all pipeline structures can be controlled by valves. If flow control is required, it can be achieved by using a flow meter and a flow valve together. All other related but undescribed parts of this utility model are implemented using existing technologies.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chlorine washing tower for chlorine treatment, comprising a tower body (1), a gas inlet pipe (2) is arranged at the bottom end of the side wall of the tower body (1), characterized in that: An air intake grille (3) is installed at the bottom of the tower body (1). An air intake channel (4) is opened inside the air intake grille (3). The input end of the air intake channel (4) in the air intake grille (3) is connected to the air intake pipe (2). A plurality of jet nozzles (5) are provided on the top of the air intake grille (3). The jet nozzles (5) are connected to the air intake channel (4). A plurality of packing layers (6) are provided above the air intake grille (3). The flow aperture of the plurality of packing layers (6) gradually decreases from bottom to top. A gas mixing guide structure is provided between two adjacent packing layers (6). A water distribution structure is provided above the upper packing layer (6). The input end of the water distribution structure extends to the outside of the tower body (1) and is connected to a liquid inlet pipe (7). A demister (8) is provided above the water distribution structure. An air outlet pipe (9) is provided on the top of the tower body (1) above the demister (8).

2. The chlorine wash column for chlorine treatment according to claim 1, characterized by: The bottom end of the tower body (1) is provided with a sedimentation hopper (10), the bottom end of the sedimentation hopper (10) is provided with a slag discharge pipe (11), and a control valve (12) is provided on the slag discharge pipe (11).

3. The chlorine wash column for chlorine treatment according to claim 2, characterized by: The inner wall of the sedimentation tank (10) is provided with a flushing pipe (13), and multiple high-pressure punches (14) are provided along the circumference of the flushing pipe (13). An infusion pipe (15) is provided extending outward from the input end of the flushing pipe (13).

4. The chlorine wash column for chlorine treatment according to claim 1, characterized by: The water distribution structure includes a water distribution pipe (16), which has two layers staggered vertically. Each water distribution pipe (16) has multiple water distribution nozzles (17) below it. The output end of the liquid inlet pipe (7) is connected to the input end of the two layers of water distribution pipes (16).

5. The chlorine wash column for chlorine service as claimed in claim 1, wherein: The tower body (1) has an inspection port (18) at the bottom of its side wall, and a manhole cover (19) is provided at the inspection port (18).

6. The chlorine wash column for chlorine service as claimed in claim 1, wherein: The gas mixing and guiding structure includes a spiral guide blade (20), and a spiral guide cavity (21) is formed between the spiral guide blade (20) and the inner wall of the tower body (1).

7. The chlorine wash column for chlorine service as claimed in claim 1, wherein: The bottom of the side wall of the tower body (1) is provided with a circulating chlorine water outlet (22), which is located above the air intake grille (3).

8. The chlorine scrubbing tower for chlorine treatment according to claim 1, characterized in that: A viewing mirror (23) is provided on the side wall of the tower body (1).

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