Chlorine treatment process and system combining multi-stage cooling with two-stage sulfuric acid drying

Abstract

The present application relates to chlorine treatment equipment technical field, more specifically, it is a kind of multi-stage cooling and double-section sulfuric acid drying combined chlorine treatment system, the chlorine treatment system includes washing tower, multistage tubular cooling component, water mist catcher, double-section dryer, chlorine acid mist eliminator and chlorine compressor, the double-section dryer is connected with water mist catcher and chlorine acid mist eliminator, the chlorine compressor is arranged in the side of chlorine acid mist eliminator and both are communicated, the chlorine treatment system further includes mounting table, support plate, control box and receiving tank, the multistage tubular cooling component is arranged on mounting table, the support plate is arranged on mounting table and is connected with multistage tubular cooling component, the control box is arranged on support plate, the receiving tank is arranged on mounting table and is communicated with double-section dryer;Relative to the traditional direct open flow cooling mode, the device can improve the cooling treatment effect of chlorine.

Description

Technical Field

[0001] This invention relates to the field of chlorine treatment equipment technology, and more specifically, to a chlorine treatment method and system that combines multi-stage cooling with two-stage sulfuric acid drying. Background Technology

[0002] Chlorine is classified as a Class 2.3 toxic gas and is listed in the "List of Highly Toxic Chemicals," belonging to the category of highly toxic substances. Chlorine enters the human body through the respiratory tract and dissolves in the moisture contained in the mucous membranes, generating hypochlorous acid and hydrochloric acid, which damage the upper respiratory tract mucosa. In addition, a mixture of chlorine and hydrogen in a certain proportion can cause an explosion. Although chlorine poses a danger to human health, it also has important applications in the chemical industry. Chlorine can be used for disinfection and sterilization. The chlor-alkali industry is one of the most basic chemical industries and is widely used in many other industrial fields. However, in the production of chlor-alkali products, chlorine is one of the byproducts. To prevent chlorine emissions or leaks from polluting the environment, affecting human health, or even causing accidents, the treatment of chlorine waste gas is of paramount importance in the chlor-alkali industry.

[0003] Chlorine is usually recovered through a series of processing steps such as washing, cooling, drying and compression. However, the cooling and drying processes in existing chlorine treatment systems are very simple. The cooling and drying of chlorine is a very important stage in the chlorine treatment process. Most traditional chlorine treatment systems directly pass chlorine into the cooling device. The flow-type cooling method results in a short residence time for chlorine and poor cooling effect. Summary of the Invention

[0004] The purpose of this invention is to provide a chlorine treatment system that combines multi-stage cooling with two-stage sulfuric acid drying to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A chlorine treatment method combining multi-stage cooling and two-stage sulfuric acid drying, the chlorine treatment method comprising the following steps:

[0007] Cooling stage: Chlorine gas is introduced into the scrubbing tower for scrubbing treatment, and then the scrubbed chlorine gas is introduced into the first-stage tubular cooler for preliminary cooling, and then into the second-stage tubular cooler for secondary cooling treatment to obtain chlorine gas with a temperature of 12-15℃.

[0008] Water mist treatment stage: Cooled chlorine gas is injected into the water mist collector to collect water mist. During this process, condensed water droplets and chlorine gas are separated, and the obtained chlorine gas is passed into the next stage.

[0009] Drying stage: The chlorine gas after water mist capture treatment is first passed into the packed drying tower. The chlorine gas is sprayed with dilute sulfuric acid through the packed drying tower for preliminary drying. The chlorine gas output from the packed drying tower can be discharged into the bubble cap tower. The bubble cap tower is sprayed with 98% concentrated sulfuric acid, thereby achieving secondary drying of the chlorine gas.

[0010] Compression stage: The chlorine gas that has undergone secondary drying in the bubble column is fed into the chlorine gas deacidifier to separate the chlorine gas and acid mist. Finally, the obtained chlorine gas is fed into the chlorine compressor for compression to obtain chlorine gas with a pressure of 0.15-0.30 MPa.

[0011] A further technical solution of this application: The specific content of the cooling stage is as follows:

[0012] Initial cooling stage: Chlorine gas in the scrubbing tower is injected into the first-stage tubular cooler. The first-stage tubular cooler and the second-stage tubular cooler are sealed to maintain the chlorine gas in the first-stage tubular cooler for a cooling time of 1 minute, and then it is introduced into the second-stage tubular cooler.

[0013] Secondary cooling stage: After the chlorine gas obtained from the initial cooling is introduced into the second-stage tubular cooler, the second-stage tubular cooler and water mist collector are controlled to be closed and the cooling residence time is ensured to be 2-3 minutes to obtain chlorine gas at 12-15℃.

[0014] A chlorine treatment system applying the chlorine treatment method described above includes a scrubbing tower, a multi-stage tubular cooling assembly, a water mist collector, a two-stage dryer, a chlorine acid mist remover, and a chlorine compressor. The scrubbing tower is connected to the water mist collector via the multi-stage tubular cooling assembly. The two-stage dryer is positioned between the water mist collector and the chlorine acid mist remover, connecting them. The chlorine compressor is positioned on one side of the chlorine acid mist remover and connected to it. The chlorine treatment system also includes an installation platform, a support plate, a control box, and a receiving box. The multi-stage tubular cooling assembly is mounted on the installation platform, the support plate is mounted on the installation platform and connected to the multi-stage tubular cooling assembly, the control box is mounted on the support plate, and the receiving box is mounted on the installation platform and connected to the two-stage dryer.

[0015] The multi-stage tubular cooling assembly includes a first-stage tubular cooler, a second-stage tubular cooler, and a drive output structure. Both the first-stage and second-stage tubular coolers are mounted on a mounting platform. The first-stage tubular cooler connects the second-stage tubular cooler to the scrubbing tower, and the second-stage tubular cooler connects the first-stage tubular cooler to the water mist collector. The drive output structure is mounted on a support plate. Both the first-stage and second-stage tubular coolers are connected to a dual-stage dryer via the drive output structure. When either the first-stage or second-stage tubular cooler is working, it controls the drive output structure and provides spray power to the dual-stage dryer. The second-stage tubular cooler has the same structure as the first-stage tubular cooler.

[0016] A further technical solution of this application: The first-stage tubular cooler includes a cooling box base, an intermediate tube, several guide seats, a telescopic cooling tube, a movable tube, a corrugated connecting tube, and a valve module. The cooling box base, the intermediate tube, and the movable tube are all mounted on a mounting platform. The cooling box base is located on one side of the intermediate tube, and the movable tube is movably sleeved on the other side of the intermediate tube. Several guide seats are arranged around the outer wall of the intermediate tube and are elastically connected to the movable tube. The movable tube and the cooling box base are connected outside the intermediate tube through a flexible hose. Several telescopic cooling tubes are arranged around the intermediate tube. The movable tube and the cooling box base are connected inside the intermediate tube through the telescopic cooling tubes. One-way valves are provided at both ends of the telescopic cooling tubes. The corrugated connecting tube is located on the movable tube and the two are connected. An exhaust port is provided on the corrugated connecting tube. The valve module is located inside the exhaust port and connected to the intermediate tube. When the movable tube moves to a set position relative to the intermediate tube, the valve module is controlled to open.

[0017] A further technical solution of this application: The valve module includes a set of sealing plates, a fixed plate, a second cylinder, and an adjusting structure. The set of sealing plates is symmetrically and movably arranged in the exhaust port. The fixed plate is set on the mounting platform and connected to the movable pipe. The number of the second cylinders is the same as the number of sealing plates and they are symmetrically arranged on the fixed plate. The movable end of the second cylinder is connected to the sealing plate. The adjusting structure is set on the fixed plate and communicates with the second cylinder to control the extension and retraction of the second cylinder. The adjusting structure is connected to the intermediate pipe. When the movable pipe moves relative to the intermediate pipe, it controls the operation of the adjusting structure.

[0018] A further technical solution of this application: The adjusting structure includes a first gear, a first rack, an air injection pipe, a stopper rod, a first piston, a first threaded rod, and a solenoid valve. The air injection pipe is mounted on a fixed plate. The stopper rod is movably mounted on one side of the air injection pipe and the two are elastically connected. The first piston is movably mounted on the other side of the air injection pipe. The first threaded rod is movably mounted on the air injection pipe and connected to the first piston. The first gear is movably mounted on the fixed plate and threadedly engaged with the first threaded rod. The first rack is mounted on an intermediate tube and meshes with the first gear. The air injection pipe is connected to the second cylinder, and a solenoid valve is provided between the two.

[0019] A further technical solution of this application: The dual-stage dryer includes a packed drying tower and a bubble cap tower. The packed drying tower and the bubble cap tower have the same structure. Both the packed drying tower and the bubble cap tower are mounted on the mounting platform and are connected to each other. The packed drying tower is connected to the corrugated connecting pipe in the two-stage tubular dryer. The packed drying tower includes a tower body, a sulfuric acid tank, a spray module, an air inlet, an exhaust outlet, and a recovery port. The tower body is mounted on the mounting platform, the sulfuric acid tank is mounted on the tower body, the air inlet and the exhaust outlet are located on both sides of the tower body, and the recovery port is located at the bottom of the tower body and is connected to the receiving box. The spray module is located inside the tower body and is connected to the sulfuric acid tank for performing sulfuric acid spraying. The spray module is connected to the drive output structure. When the movable pipe moves relative to the intermediate pipe, the spray module is controlled by the drive output structure.

[0020] A further technical solution of this application: The spray module includes a toothed ring, a third toothed rack, a first cylinder, and several spray seats. A spray mounting base is movably arranged inside the tower body. Several spray seats are arranged in a ring inside the spray mounting base and are elastically connected to each other. The spray seats are connected to the sulfuric acid tank. The toothed ring is sleeved on the spray mounting base. The third toothed rack movably passes through the tower body and meshes with the toothed ring. The first cylinder is mounted on a support plate and its movable end is connected to the third toothed rack. The drive output structure is connected to the first cylinder. A fixing ring is provided inside the tower body. Several protrusions are arranged in a ring on the inner wall of the fixing ring. The protrusions are located on the moving path of the spray seats.

[0021] A further technical solution of this application: a resistance-reducing component is provided on the side of the spray seat near the fixing ring to reduce the frictional resistance experienced when the spray seat and the protrusion come into contact.

[0022] A further technical solution of this application: The drive output structure includes a second rack, a retaining shaft, a second threaded rod, a hollow tube, and a second piston. The hollow tube is mounted on a support plate and communicates with a first cylinder. The second piston is movably mounted inside the hollow tube and the two are elastically connected. The second threaded rod is movably mounted on the hollow tube and the two are threadedly engaged. The second threaded rod and the second piston are connected. A second gear is movably mounted on the support plate via a retaining shaft. The retaining shaft is slidably inserted into the retaining groove of the second threaded rod. The second rack is mounted on the movable tube and meshes with the second gear.

[0023] Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following beneficial effects:

[0024] This invention, through the arrangement of a movable pipe, an intermediate pipe, a valve module, and a spray module, utilizes a linked mechanical structure and a movable-interlocking mechanism between the movable and intermediate pipes. This not only allows the valve module to create pressure changes within the tubular cooler, achieving a closed-loop cooling effect with the movable pipe moving relative to the intermediate pipe, but also simultaneously provides power input to the valve module and power output to the spray module. Furthermore, the movement of the movable pipe relative to the intermediate pipe creates a flowing cooling circulation loop between the cooling box base, the movable pipe, and the telescopic cooling pipe. Compared to the traditional open-loop cooling method, this device significantly improves the cooling effect on chlorine gas. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating the steps of the chlorine treatment method combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention.

[0026] Figure 2 This is a partial structural diagram of the chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the multi-stage tubular cooling assembly in the chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention.

[0028] Figure 4 This is a partial cross-sectional view of a first-stage tubular cooler in a chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the valve module in the chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention;

[0030] Figure 6This is a partial cross-sectional view of the corrugated connecting pipe in the chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the adjustment structure in the chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram of the drive output structure in the chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention.

[0033] Figure 9 This is a partial cross-sectional view of the packed drying tower in the chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying in an embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the spray module in a chlorine treatment system combining multi-stage cooling and two-stage sulfuric acid drying, as described in an embodiment of the present invention.

[0035] Explanation of the labels in the diagram:

[0036] 1-Mounting platform, 2-Support plate, 3-Control box, 4-Receiving box, 5-First cylinder, 100-First-stage tubular cooler, 101-Cooling box base, 102-Intermediate pipe, 103-Guide seat, 104-Moving pipe, 105-Corrugated connecting pipe, 106-Fixing plate, 107-Telescopic cooling pipe, 108-Exhaust port, 109-Sealing plate, 110-Second cylinder, 111-First gear, 112-Air injection pipe, 113-Solenoid valve, 114-Plug rod, 115-First piston, 116-First threaded rod, 118-Second gear, 119- Second rack, 120-hollow tube, 121-second piston, 122-second threaded rod, 123-shaft retainer, 200-washing tower, 300-two-stage tubular cooler, 400-water mist collector, 500-packed drying tower, 501-tower body, 502-sulfuric acid tank, 503-inlet, 504-exhaust, 505-recovery port, 506-gear ring, 507-third rack, 508-spray seat, 509-roller, 510-fixed ring, 511-protrusion, 600-bubble cap tower, 700-chlorine deacid mist remover, 800-chlorine compressor. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will be further described below with reference to the embodiments.

[0038] Please see Figure 1 In one embodiment of this application, a chlorine treatment method combining multi-stage cooling and two-stage sulfuric acid drying is provided, the chlorine treatment method comprising the following steps:

[0039] Cooling stage: Chlorine gas is introduced into the scrubbing tower 200 for scrubbing treatment, and then the scrubbed chlorine gas is introduced into the first-stage tubular cooler 100 for preliminary cooling, and then into the second-stage tubular cooler 300 for secondary cooling treatment to obtain chlorine gas with a temperature of 12-15℃.

[0040] Water mist treatment stage: The cooled chlorine gas is injected into the water mist collector 400 to collect water mist. During this process, the condensed water droplets and chlorine gas can be separated, and the obtained chlorine gas is passed into the next stage.

[0041] Drying stage: The chlorine gas after water mist capture treatment is first passed into the packed drying tower 500. The chlorine gas is sprayed with dilute sulfuric acid through the packed drying tower 500 for preliminary drying treatment. The chlorine gas output from the packed drying tower 500 can be discharged into the bubble cap tower 600. The bubble cap tower 600 is sprayed with 98% concentrated sulfuric acid, thereby achieving secondary drying of the chlorine gas.

[0042] Compression stage: The chlorine gas that has undergone secondary drying in the bubble column 600 is fed into the chlorine gas deacidifier 700 to separate the chlorine gas and acid mist. Finally, the obtained chlorine gas is fed into the chlorine compressor 800 for compression treatment, and finally chlorine gas with a pressure value of 0.15-0.30MPa is obtained.

[0043] It should be noted that the cooling stage specifically includes the following:

[0044] Initial cooling stage: Chlorine gas in the scrubbing tower 200 is injected into the first-stage tubular cooler 100 to seal the first-stage tubular cooler 100 and the second-stage tubular cooler 300. The chlorine gas is kept in the first-stage tubular cooler 100 for a cooling time of 1 minute, and then introduced into the second-stage tubular cooler 300.

[0045] Secondary cooling stage: After the chlorine gas obtained from the initial cooling is introduced into the second-stage tubular cooler 300, the second-stage tubular cooler 300 and the water mist collector 400 are controlled to be closed and the cooling residence time is ensured to be 2-3 minutes to obtain chlorine gas at 12-15℃.

[0046] Please see Figures 2-10 In one embodiment of this application, a chlorine treatment system applying the chlorine treatment method described in the above embodiments is provided. The chlorine treatment system includes a scrubbing tower 200, a multi-stage tubular cooling assembly, a water mist collector 400, a two-stage dryer, a chlorine acid mist remover 700, and a chlorine compressor 800. The scrubbing tower 200 is connected to the water mist collector 400 via the multi-stage tubular cooling assembly. The two-stage dryer is disposed between the water mist collector 400 and the chlorine acid mist remover 700. The two-stage dryer removes water... The mist collector 400 and the chlorine acid mist remover 700 are connected. The chlorine compressor 800 is located on one side of the chlorine acid mist remover 700 and the two are connected. The chlorine treatment system also includes an installation platform 1, a support plate 2, a control box 3, and a receiving box 4. The multi-stage tubular cooling assembly is located on the installation platform 1. The support plate 2 is located on the installation platform 1 and connected to the multi-stage tubular cooling assembly. The control box 3 is located on the support plate 2. The receiving box 4 is located on the installation platform 1 and connected to the dual-stage dryer.

[0047] The multi-stage tubular cooling assembly includes a first-stage tubular cooler 100, a second-stage tubular cooler 300, and a drive output structure. Both the first-stage tubular cooler 100 and the second-stage tubular cooler 300 are mounted on the mounting platform 1. The first-stage tubular cooler 100 connects the second-stage tubular cooler 300 to the scrubbing tower 200, and the second-stage tubular cooler 300 connects the first-stage tubular cooler 100 to the water mist collector 400. The drive output structure is mounted on the support plate 2. Both the first-stage tubular cooler 100 and the second-stage tubular cooler 300 are connected to the dual-stage dryer through the drive output structure. When either the first-stage tubular cooler 100 or the second-stage tubular cooler 300 is working, it controls the drive output structure to operate and provides spray power to the dual-stage dryer. The second-stage tubular cooler 300 has the same structure as the first-stage tubular cooler 100.

[0048] In one specific embodiment, the first-stage tubular cooler 100 includes a cooling box base 101, an intermediate tube 102, several guide seats 103, a telescopic cooling tube 107, a movable tube 104, a corrugated connecting tube 105, and a valve module. The cooling box base 101, the intermediate tube 102, and the movable tube 104 are all mounted on a mounting platform 1. The cooling box base 101 is located on one side of the intermediate tube 102, and the movable tube 104 is movably sleeved on the other side of the intermediate tube 102. Several guide seats 103 are arranged around the outer wall of the intermediate tube 102 and elastically connected to the movable tube 104. The movable tube 104 and the cooling box base... 101 is connected to the outside of the intermediate pipe 102 via a flexible hose. Several telescopic cooling pipes 107 are arranged in a ring inside the intermediate pipe 102. The movable pipe 104 and the cooling box seat 101 are connected inside the intermediate pipe 102 via the telescopic cooling pipes 107. One-way valves are provided at both ends of the telescopic cooling pipes 107. The corrugated connecting pipe 105 is provided on the movable pipe 104 and the two are connected. The corrugated connecting pipe 105 is provided with an exhaust port 108. The valve module is located inside the exhaust port 108 and connected to the intermediate pipe 102. When the movable pipe 104 moves to a set position relative to the intermediate pipe 102, the valve module is controlled to open.

[0049] In another specific embodiment, the valve module includes a set of sealing plates 109, a fixed plate 106, a second cylinder 110, and an adjusting structure. The sealing plates 109 are symmetrically and movably arranged within the exhaust port 108. The fixed plate 106 is mounted on the mounting platform 1 and connected to the movable pipe 104. The number of second cylinders 110 is the same as the number of sealing plates 109 and they are symmetrically arranged on the fixed plate 106. The movable end of the second cylinder 110 is connected to the sealing plate 109. The adjusting structure is mounted on the fixed plate 106 and communicates with the second cylinder 110, and is used to control the extension and retraction of the second cylinder 110. The adjusting structure is connected to the intermediate pipe 102. When the movable pipe 104 moves relative to the intermediate pipe 102, it controls the operation of the adjusting structure.

[0050] It should be further explained that the adjustment structure includes a first gear 111, a first rack, an air injection pipe 112, a stopper rod 114, a first piston 115, a first threaded rod 116, and a solenoid valve 113. The air injection pipe 112 is mounted on the fixed plate 106. The stopper rod 114 is movably mounted on one side of the air injection pipe 112 and the two are elastically connected. The first piston 115 is movably mounted on the other side of the air injection pipe 112. The first threaded rod 116 is movably mounted on the air injection pipe 112 and connected to the first piston 115. The first gear 111 is movably mounted on the fixed plate 106 and threadedly engaged with the first threaded rod 116. The first rack is mounted on the intermediate pipe 102 and meshes with the first gear 111. The air injection pipe 112 is connected to the second cylinder 110, and a solenoid valve 113 is provided between the two.

[0051] It should be noted that this embodiment is not limited to the above-mentioned cooperation of the first threaded rod 116, the first rack and the first gear 111 to adjust the position of the first piston 115. A linear motor or an electric cylinder can also be used instead, which will not be listed here.

[0052] In practical applications, chlorine gas is introduced into the scrubbing tower 200. After scrubbing, the chlorine gas is then introduced into the first-stage tubular cooler 100 and the second-stage tubular cooler 300 for cooling. During this process, chlorine gas enters the intermediate tube 102. Since the exhaust port 108 is closed, the gas pressure causes the movable tube 104 to move relative to the intermediate tube 102, which in turn causes the first rack to move synchronously. The meshing action between the first rack and the first gear 111 causes the first gear 111 to rotate. Consequently, the threaded engagement between the first threaded rod 116 and the first gear 111 causes the first piston 115 to move along the gas injection pipe 112. To maintain gas pressure balance, the piston rod 114 moves synchronously. When the closing time of the solenoid valve 113 controlled by the control box 3 reaches the cooling closing time, the control box 3 controls the solenoid valve 113 to... When the power is turned on, the second cylinder 110 and the air injection pipe 112 are connected. Under the action of elastic restoring force, the control rod 114 is reset relative to the air injection pipe 112, thereby drawing air from the second cylinder 110 into the air injection pipe 112. This causes the second cylinder 110 to contract and adjust the position of the sealing plate 109, opening the exhaust port 108. The chlorine gas then enters the next stage, completing the closed-loop cooling process. After cooling, the chlorine gas passes through the water mist collector 400 to remove condensate droplets. It then enters the double-end dryer for multiple drying operations. During the movement of the movable pipe 104 relative to the intermediate pipe 102, the double-stage dryer is driven to spray sulfuric acid. After drying, the chlorine gas enters the chlorine gas deacid mist remover 700 for acid mist removal. Finally, the chlorine gas enters the chlorine gas compressor 800 for compression to obtain the required pressure value.

[0053] Please see Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 as well as Figure 10In another preferred embodiment of this application, the two-stage dryer includes a packed drying tower 500 and a bubble cap tower 600. The packed drying tower 500 and the bubble cap tower 600 have the same structure. Both the packed drying tower 500 and the bubble cap tower 600 are mounted on the mounting platform 1 and are connected to each other. The packed drying tower 500 is connected to the corrugated connecting pipe 105 in the two-stage tubular dryer. The packed drying tower 500 includes a tower body 501, a sulfuric acid tank 502, a spray module, an air inlet 503, an exhaust duct 504, and a recovery port 505. The tower body 501 is mounted on the mounting platform 1, the sulfuric acid tank 502 is mounted on the tower body 501, the air inlet and exhaust outlet 108 are located on both sides of the tower body 501, the recovery outlet 505 is located at the bottom of the tower body 501 and is connected to the receiving box 4, the spray module is located inside the tower body 501 and is connected to the sulfuric acid tank 502, and is used to perform sulfuric acid spraying. The spray module is connected to the drive output structure, and when the movable pipe 104 moves relative to the intermediate pipe 102, the spray module is controlled by the drive output structure.

[0054] In one specific embodiment, the spray module includes a toothed ring 506, a third rack 507, a first cylinder 5, and several spray seats 508. A spray mounting base is movably disposed inside the tower body 501. Several spray seats 508 are arranged in a ring around the spray mounting base and are elastically connected to each other. The spray seats 508 are connected to the sulfuric acid tank 502. The toothed ring 506 is sleeved on the spray mounting base. The third rack 507 movably passes through the tower body 501 and meshes with the toothed ring 506. The first cylinder 5 is disposed on the support plate 2 and its movable end is connected to the third rack 507. The drive output structure is connected to the first cylinder 5. A fixing ring 510 is disposed inside the tower body 501. Several protrusions 511 are arranged in a ring on the inner wall of the fixing ring 510. The protrusions 511 are located on the moving path of the spray seats 508.

[0055] It should be noted that the spray seat 508 is provided with a friction-reducing component on the side near the fixing ring 510, which is used to reduce the frictional resistance experienced by the spray seat 508 and the protrusion 511 when they come into contact.

[0056] It should be noted that the drag-reducing component can be a ball bearing or a roller 509. In this embodiment, the drag-reducing component is preferably a roller 509. The roller 509 is movably mounted on the spray seat 508 and the protrusion 511 is located on the moving path of the roller 509. As for the specific model parameters of the roller 509, the best choice can be made according to the actual situation, and they will not be listed here.

[0057] In practical applications, the captured chlorine gas first enters the packed drying tower 500 and then the bubble cap tower 600, achieving a two-stage drying process. During the reciprocating motion of the movable pipe 104 relative to the intermediate pipe 102, the drive output structure is activated. This activation controls the continuous extension and retraction of the first cylinder 5, which in turn drives the third rack 507 to reciprocate relative to the packing and the bubble cap tower 600. The meshing action between the third rack 507 and the toothed ring 506 causes the spray mounting base to rotate repeatedly, allowing sulfuric acid to be introduced into the spray base 508 through the sulfuric acid tank 502, thus achieving the spray treatment of the passing chlorine gas. During the rotation of the spray mounting base, the spray seats 508 at different positions can successively meet and abut against the protrusions 511 on the fixing ring 510, so that the spray seats 508 can reciprocate in the horizontal direction as the spray mounting base rotates, which further improves the drying treatment of the passing chlorine gas and avoids the occurrence of dead corners in the drying process. In addition, during this process, the reciprocating motion of the movable tube 104 relative to the intermediate tube 102 can drive the telescopic cooling tube 107 to continuously extend and retract, thereby forming a flowing cooling circulation loop of the cooling box base 101, the movable tube 104 and the telescopic cooling tube 107, which further improves the cooling treatment effect of chlorine gas.

[0058] Please see Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 as well as Figure 10 In another preferred embodiment of this application, the drive output structure includes a second rack 119, a retaining shaft 123, a second threaded rod 122, a hollow tube 120, and a second piston 121. The hollow tube 120 is disposed on the support plate 2 and communicates with the first cylinder 5. The second piston 121 is movably disposed within the hollow tube 120 and the two are elastically connected. The second threaded rod 122 is movably disposed on the hollow tube 120 and the two are threadedly engaged. The second threaded rod 122 is connected to the second piston 121. A second gear 118 is movably disposed on the support plate 2 via the retaining shaft 123. The retaining shaft 123 is slidably inserted into the retaining groove of the second threaded rod 122. The second rack 119 is disposed on the movable tube 104 and meshes with the second gear 118.

[0059] In practical applications, during the reciprocating motion of the movable tube 104 relative to the intermediate tube 102, the second rack 119 can be driven to move synchronously. Under the meshing action between the second rack 119 and the second gear 118, the second gear 118 and the retaining shaft 123 can be driven to rotate. Under the sliding engagement between the retaining shaft 123 and the retaining groove, the second threaded rod 122 can be driven to rotate. Under the threaded engagement between the second threaded rod 122 and the hollow tube 120, the second piston 121 is driven to reciprocate along the hollow tube 120, thereby driving the first cylinder 5 to continuously extend and retract, thus controlling the spray seat 508 mounting base to rotate repeatedly.

[0060] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A process for the treatment of chlorine gas by multi-stage cooling in combination with two-stage sulfuric acid drying, characterized in that, The chlorine treatment method comprises the following steps: cooling stage: the chlorine is washed in the washing tower, then is preliminarily cooled in the first-stage tubular cooler, and then is secondarily cooled in the second-stage tubular cooler, so that the chlorine with a temperature of 12-15℃ is obtained; water mist treatment stage: the cooled chlorine is injected into the water mist collector to separate the condensed water drops from the chlorine, and the obtained chlorine is sent to the next stage; drying stage: the chlorine treated by the water mist is first sent to the packed drying tower, is preliminarily dried by spraying dilute sulfuric acid on the chlorine, and then is sent to the bubble cap tower to be secondarily dried by spraying 98% concentrated sulfuric acid; compression stage: the chlorine dried by the bubble cap tower is sent to the chlorine acid mist eliminator to separate the chlorine from the acid mist, and then is sent to the chlorine compressor to be compressed, so that the chlorine with a pressure of 0.15-0.30 MPa is obtained; The first-stage tubular cooler comprises a cooling box seat, an intermediate pipe, a plurality of guide seats, a telescopic cooling pipe, a movable pipe, a corrugated connecting pipe and a valve module, the cooling box seat, the intermediate pipe and the movable pipe are arranged on the mounting table, the cooling box seat is arranged on one side of the intermediate pipe, the movable pipe is movably arranged on the other side of the intermediate pipe, the plurality of guide seats are arranged on the outer wall of the intermediate pipe and are elastically connected with the movable pipe, the movable pipe and the cooling box seat are communicated outside the intermediate pipe through a hose, the telescopic cooling pipe is arranged in the intermediate pipe in a plurality of numbers, the movable pipe and the cooling box seat are communicated inside the intermediate pipe through the telescopic cooling pipe, one-way valves are arranged at the two ends of the telescopic cooling pipe, the corrugated connecting pipe is arranged on the movable pipe and communicates with the movable pipe, an exhaust port is arranged on the corrugated connecting pipe, the valve module is arranged in the exhaust port and is connected with the intermediate pipe, and the valve module is controlled to be opened when the movable pipe moves to a set position relative to the intermediate pipe. The valve module comprises a plurality of sealing plates, a fixed plate, a second cylinder and a position adjusting structure, the plurality of sealing plates are symmetrically movably arranged in the exhaust port, the fixed plate is arranged on the mounting table and is connected with the movable pipe, the number of the second cylinders is the same as that of the sealing plates and the second cylinders are symmetrically arranged on the fixed plate, the movable ends of the second cylinders are connected with the sealing plates, the position adjusting structure is arranged on the fixed plate and communicates with the second cylinders to control the extension and retraction of the second cylinders, the position adjusting structure is connected with the intermediate pipe, and the position adjusting structure is controlled to work when the movable pipe moves relative to the intermediate pipe.

2. The process for the treatment of chlorine gas by multi-stage cooling in combination with two-stage sulfuric acid drying according to claim 1, characterized in that, The cooling stage comprises the following steps: primary cooling stage: the chlorine in the washing tower is injected into the first-stage tubular cooler, the first-stage tubular cooler and the second-stage tubular cooler are closed, the chlorine is cooled in the first-stage tubular cooler for 1 min, and then is sent to the second-stage tubular cooler. Secondary cooling stage: after the obtained chlorine gas in the primary cooling is input into the secondary tubular cooler, the secondary tubular cooler and the water mist catcher are controlled to be closed and the cooling residence time is ensured to be 2-3 min, so that the chlorine gas at 12-15 ℃ is obtained.

3. A chlorine treatment system using the chlorine treatment method according to claim 1, wherein the chlorine treatment system comprises a washing tower, a multi-stage pipe cooling assembly, a water mist catcher, a two-stage drier, a chlorine acid mist eliminator, and a chlorine compressor, the washing tower is connected with the multi-stage pipe cooling assembly and the water mist catcher, the two-stage drier is arranged between the water mist catcher and the chlorine acid mist eliminator, the two-stage drier connects the water mist catcher and the chlorine acid mist eliminator, and the chlorine compressor is arranged on one side of the chlorine acid mist eliminator and connected with the chlorine acid mist eliminator. The chlorine treatment system further comprises a mounting table, a support plate, a control box and a receiving tank, the multi-stage tubular cooling assembly is arranged on the mounting table, the support plate is arranged on the mounting table and connected with the multi-stage tubular cooling assembly, the control box is arranged on the support plate, and the receiving tank is arranged on the mounting table and communicated with the double-section dryer; The multi-stage tubular cooling assembly comprises a first tubular cooler, a second tubular cooler and a driving output structure, the first tubular cooler and the second tubular cooler are arranged on the mounting table, the first tubular cooler is communicated with the second tubular cooler and the washing tower, the second tubular cooler is communicated with the first tubular cooler and the water mist catcher, the driving output structure is arranged on the support plate, the first tubular cooler and the second tubular cooler are connected with the double-section dryer through the driving output structure, and the driving output structure is controlled to work when the first tubular cooler or the second tubular cooler works and provides spraying power for the double-section dryer.

4. The multi-stage chlorine treatment system with cooling and two-stage sulfuric acid drying according to claim 3, characterized in that, The adjusting structure comprises a first gear, a first rack, a gas injection pipe, a plug rod, a first piston, a first threaded rod and a solenoid valve, the gas injection pipe is arranged on the fixed plate, the plug rod is movably arranged on one side of the gas injection pipe and elastically connected with the gas injection pipe, the first piston is movably arranged on the other side of the gas injection pipe, the first threaded rod is movably arranged on the gas injection pipe and connected with the first piston, the first gear is movably arranged on the fixed plate and threadedly matched with the first threaded rod, the first rack is arranged on the intermediate pipe and engaged with the first gear, and the gas injection pipe is communicated with the second cylinder and provided with the solenoid valve therebetween.

5. The multi-stage chlorine treatment system with cooling and two-stage sulfuric acid drying according to claim 4, characterized in that, The double-section dryer comprises a packed drying tower and a bubble cap tower, the packed drying tower and the bubble cap tower are the same in structure, the packed drying tower and the bubble cap tower are arranged on the mounting table and communicated with each other, the packed drying tower is communicated with the corrugated connecting pipe in the second tubular cooler, the packed drying tower comprises a tower body, a sulfuric acid tank, a spraying module, an air inlet, an air outlet and a recovery opening, the tower body is arranged on the mounting table, the sulfuric acid tank is arranged on the tower body, the air inlet and the air outlet are arranged on the two sides of the tower body, the recovery opening is arranged at the bottom of the tower body and communicated with the receiving tank, the spraying module is arranged in the tower body and communicated with the sulfuric acid tank and used for performing the spraying work of sulfuric acid, the spraying module is connected with the driving output structure, and the spraying module is controlled to work through the driving output structure when the movable pipe moves relative to the intermediate pipe.

6. The multi-stage chlorine treatment system with cooling and two-stage sulfuric acid drying according to claim 5, characterized in that, The spraying module comprises a gear ring, a third rack, a first cylinder, a plurality of spraying seats, a spraying mounting seat movably arranged in the tower body, the plurality of spraying seats being arranged in the spraying mounting seat and elastically connected with each other, the spraying seats being communicated with the sulfuric acid tank, the gear ring being sleeved on the spraying mounting seat, the third rack movably penetrating through the tower body and engaged with the gear ring, the first cylinder being arranged on the supporting plate and having an active end connected with the third rack, the driving output structure being connected with the first cylinder, a fixed ring being arranged in the tower body, a plurality of protruding portions being arranged on the inner wall of the fixed ring and located on the moving path of the spraying seats.

7. The multi-stage chlorine treatment system with cooling and two-stage sulfuric acid drying according to claim 6, characterized in that, The side of the spraying seat close to the fixed ring is provided with a resistance reducing member for reducing the friction resistance of the spraying seat and the protruding portions when they are in contact.

8. The multi-stage chlorine treatment system with two-stage sulfuric acid drying combined with cooling according to claim 7, characterized in that, The driving output structure comprises a second rack, a clamping shaft, a second threaded rod, a hollow pipe and a second piston, the hollow pipe being arranged on the supporting plate and communicated with the first cylinder, the second piston being movably arranged in the hollow pipe and elastically connected with the hollow pipe, the second threaded rod being movably arranged on the hollow pipe and threadedly matched with the hollow pipe, the second threaded rod being connected with the second piston, the second gear being movably arranged on the supporting plate through the clamping shaft, the clamping shaft being slidingly inserted into the clamping groove of the second threaded rod, the second rack being arranged on the movable pipe and engaged with the second gear.

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