Chlorine treatment method and system combining multi-stage cooling and double-stage sulfuric acid drying

Abstract

The invention relates to the technical field of chlorine treatment equipment, in particular to a multistage cooling and double-section sulfuric acid drying combined chlorine treatment system which comprises a washing tower, a multistage tubular cooling assembly, a water mist catcher, a double-section dryer, a chlorine acid mist remover and a chlorine compressor. The water mist catcher is communicated with the chlorine acid mist remover through the double-section dryer, the chlorine compressor is arranged on one side of the chlorine acid mist remover and is communicated with the chlorine acid mist remover, the chlorine treatment system further comprises a mounting table, a supporting plate, a control box and a material receiving box, and the multi-stage tubular cooling assembly is arranged on the mounting table. The supporting plate is arranged on the mounting table and connected with the multi-stage tubular cooling assembly, the control box is arranged on the supporting plate, and the material receiving box is arranged on the mounting table and communicates with the double-section dryer; compared with a traditional mode of directly adopting open type flow cooling, the device can improve the cooling treatment effect on chlorine.

Description

Technical Field

[0001] The invention relates to the technical field of chlorine treatment equipment, and more specifically to a chlorine treatment method and system combining multi-stage cooling with double-stage sulfuric acid drying. Background Art

[0002] Chlorine is a Class 2.3 toxic gas and has been listed in the "List of Highly Toxic Chemicals". Chlorine enters the human body through the respiratory tract and dissolves in the water contained in the mucous membrane to generate hypochlorous acid and hydrochloric acid, causing damage to the upper respiratory tract mucosa. In addition, chlorine and hydrogen mixed in a certain proportion will cause an explosion. Although chlorine is dangerous to humans, it also has important applications in the chemical industry. Chlorine can kill viruses and sterilize. The chlor-alkali industry is one of the most basic chemical industries and is widely used in many other industrial fields. However, when the chlor-alkali industry is producing, chlorine is one of the products of the chlor-alkali industry. In order to prevent chlorine from being discharged or leaked to pollute the environment, affect human health, and even cause accidents, the treatment of chlorine waste gas is the top priority of the chlor-alkali industry.

[0003] Chlorine is usually recycled 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 are very important stages in the chlorine treatment process. Most traditional chlorine treatment systems directly pass chlorine into a cooling device. The flow cooling method results in a short cooling residence time of chlorine and poor cooling effect. Summary of the invention

[0004] The object of the present invention is to provide a chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A chlorine treatment method combining multi-stage cooling and double-stage sulfuric acid drying, the chlorine treatment method comprising the following steps: Cooling stage: the chlorine gas is passed into the scrubbing tower for scrubbing treatment, and then the scrubbed chlorine gas is passed into the first-stage tubular cooler for preliminary cooling, and then passed into the second-stage tubular cooler for secondary cooling treatment to obtain chlorine gas with a temperature of 12-15°C; Water mist treatment stage: the cooled chlorine gas is injected into the water mist collector for water mist capture. During this process, the condensed water droplets and chlorine gas can be separated, and the obtained chlorine gas is passed to the next stage; Drying stage: The chlorine gas after the water mist capture treatment is first passed into the packed drying tower, and dilute sulfuric acid is sprayed on the chlorine gas through the packed drying tower for preliminary drying treatment. The chlorine gas output from the packed drying tower can be discharged into the bubble tower, and 98% concentrated sulfuric acid is sprayed through the bubble tower, so as to achieve secondary drying of the chlorine gas; Compression stage: The chlorine gas that has been secondary dried in the bubble tower is input into the chlorine acid mist remover to separate the chlorine gas and the acid mist. Finally, the obtained chlorine gas is passed into the chlorine compressor for compression treatment, and finally chlorine gas with a pressure value of 0.15-0.30MPa is obtained.

[0006] A further technical solution of the present application: the specific contents of the cooling stage are as follows: Initial cooling stage: inject the chlorine gas in the scrubber into the first-stage tubular cooler, seal the first-stage tubular cooler and the second-stage tubular cooler, keep the cooling time of the chlorine gas in the first-stage tubular cooler at 1 minute, and then pass it into the second-stage tubular cooler; Secondary cooling stage: After the chlorine gas obtained by the initial cooling is input into the second-stage tubular cooler, the second-stage tubular cooler and the water mist collector are controlled to be closed and the cooling residence time is ensured to be 2-3 minutes, so as to obtain chlorine gas at 12-15°C.

[0007] A chlorine treatment system using the chlorine treatment method described in the above technical solution, the chlorine treatment system comprising a washing tower, a multi-stage tubular cooling assembly, a water mist trap, a double-stage dryer, a chlorine acid removal mister and a chlorine compressor, the washing tower is connected to the water mist trap through the multi-stage tubular cooling assembly, the double-stage dryer is arranged between the water mist trap and the chlorine acid removal mister, the double-stage dryer connects the water mist trap and the chlorine acid removal mister, the chlorine compressor is arranged on one side of the chlorine acid removal mister and the two are connected, the chlorine treatment system also includes a mounting platform, a support plate, a control box and a material receiving box, the multi-stage tubular cooling assembly is arranged on the mounting platform, the support plate is arranged on the mounting platform and connected to the multi-stage tubular cooling assembly, the control box is arranged on the support plate, and the material receiving box is arranged on the mounting platform and connected to the double-stage dryer; The multi-stage tubular cooling assembly includes a first-stage tubular cooler, a second-stage tubular cooler and a drive output structure. The first-stage tubular cooler and the second-stage tubular cooler are both arranged on a mounting table. The first-stage tubular cooler connects the second-stage tubular cooler with a washing tower, and the second-stage tubular cooler connects the first-stage tubular cooler with a water mist collector. The drive output structure is arranged on a support plate. The first-stage tubular cooler and the second-stage tubular cooler are both connected to a two-stage dryer through the drive output structure. When the first-stage tubular cooler or the second-stage tubular cooler is in operation, the drive output structure is controlled to operate and spray power is provided for the two-stage dryer. The second-stage tubular cooler has the same structure as the first-stage tubular cooler.

[0008] A further technical solution of the present application: the first-stage tubular cooler comprises a cooling box seat, an intermediate tube, a plurality of guide seats, a telescopic cooling tube, a movable tube, a corrugated connecting tube and a valve module; the cooling box seat, the intermediate tube and the movable tube are all arranged on a mounting platform; the cooling box seat is arranged on one side of the intermediate tube, and the movable tube is movably sleeved on the other side of the intermediate tube; a plurality of the guide seats are arranged on the outer wall of the intermediate tube and are elastically connected to the movable tube; the movable tube and the cooling box seat are connected on the outside of the intermediate tube through a hose; the number of the telescopic cooling tubes is several and arranged in the intermediate tube; the movable tube and the cooling box seat are connected on the inside of the intermediate tube through the telescopic cooling tube; both ends of the telescopic cooling tube are provided with a one-way valve; the corrugated connecting tube is arranged on the movable tube and the two are connected; the corrugated connecting tube is provided with an exhaust port; the valve module is arranged in the exhaust port and is 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.

[0009] A further technical solution of the present application: the valve module includes a group of sealing plates, a fixed plate, a second cylinder and a positioning structure, a group of the sealing plates are symmetrically and movably arranged in the exhaust port, the fixed plate is arranged on the mounting platform and is connected to the movable tube, the number of the second cylinders is the same as the number of the sealing plates and are symmetrically arranged on the fixed plate, the movable end of the second cylinder is connected to the sealing plate, the positioning structure is arranged on the fixed plate and is connected to the second cylinder for controlling the extension and retraction of the second cylinder, the positioning structure is connected to the intermediate tube, and the positioning structure is controlled to work when the movable tube moves relative to the intermediate tube.

[0010] The present application has a further technical solution: the positioning structure includes a first gear, a first rack, an air injection pipe, a plug rod, a first piston, a first threaded rod and a solenoid valve, the air injection pipe is arranged on a fixed plate, the plug rod is movably arranged on one side of the air injection pipe and the two are elastically connected, the first piston is movably arranged on the other side of the air injection pipe, the first threaded rod is movably arranged on the air injection pipe and connected to the first piston, the first gear is movably arranged on the fixed plate and threadably matched with the first threaded rod, the first rack is arranged on the intermediate tube and meshes with the first gear, the air injection pipe is connected to the second cylinder and a solenoid valve is arranged between the two.

[0011] The present application has a further technical solution: the two-stage dryer includes a packed drying tower and a bubble tower, the packed drying tower and the bubble tower have the same structure, the packed drying tower and the bubble tower are both arranged on a mounting platform and are connected, 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 duct and a recovery port, the tower body is arranged on a mounting platform, the sulfuric acid tank is arranged on the tower body, the air inlet and the exhaust port are arranged on both sides of the tower body, the recovery port is arranged at the bottom of the tower body and is connected to the material receiving box, the spray module is arranged in the tower body and is connected to the sulfuric acid tank, for performing the spraying of sulfuric acid, the spray module is connected to the drive output structure, and when the movable tube moves relative to the intermediate tube, the drive output structure works to control the operation of the spray module.

[0012] The present application has a further technical solution: the spray module includes a gear ring, a third rack, a first cylinder, and several spray seats. A spray mounting seat is movably arranged in the tower body. Several spray seats are arranged in the spray mounting seat and are elastically connected. The spray seat is connected to the sulfuric acid tank. The gear ring is sleeved on the spray mounting seat. The third rack movably passes through the tower body and meshes with the gear ring. The first cylinder is arranged on a support plate and its movable end is connected to the third rack. The drive output structure is connected to the first cylinder. A fixing ring is arranged in the tower body. A plurality of protrusions are arranged on the inner wall of the fixing ring. The protrusions are located on the moving path of the spray seat.

[0013] A further technical solution of the present application is as follows: a resistance reducing member is provided on one side of the spray seat close to the fixing ring, so as to reduce the friction resistance encountered when the spray seat and the raised portion are in contact.

[0014] A further technical solution of the present application is as follows: the drive output structure includes a second rack, a clamping shaft, a second threaded rod, a hollow tube and a second piston; the hollow tube is arranged on a support plate and is connected to the first cylinder; the second piston is movably arranged in the hollow tube and the two are elastically connected; the second threaded rod is movably arranged on the hollow tube and the two are threadedly matched; the second threaded rod is connected to the second piston; a second gear is movably arranged on the support plate through the clamping shaft; the clamping shaft is slidably inserted in the clamping groove of the second threaded rod; the second rack is arranged on the movable tube and meshes with the second gear.

[0015] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following beneficial effects: The embodiment of the present invention provides a movable tube, an intermediate tube, a valve module and a spray module, utilizes a linked mechanical structure, and adopts a movable cooperation mode of the movable tube and the intermediate tube. It can not only utilize the valve module to create a change in the air pressure value inside the tubular cooler to achieve a closed cooling treatment effect by the movement of the movable tube relative to the intermediate tube, but also, when the movable tube moves relative to the intermediate tube, on the one hand, power input to the valve module is achieved, and on the other hand, power output to the spray module is achieved. In addition, the movement of the movable tube relative to the intermediate tube can be utilized to make the cooling box seat, the movable tube and the telescopic cooling tube form a flowing cooling circulation loop. Compared with the traditional method of directly adopting an open flow cooling method, the present device can improve the cooling treatment effect of chlorine gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a step diagram of a chlorine treatment method combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of a chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Figure 3 It is a schematic structural diagram of a multi-stage tubular cooling assembly in a chlorine treatment system combining multi-stage cooling with double-stage sulfuric acid drying in an embodiment of the present invention; Figure 4 It is a partial cross-sectional view of a first-stage tubular cooler in a chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Figure 5 It is a structural schematic diagram of a valve module in a chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Figure 6 It is a partial cross-sectional view of a corrugated connecting pipe in a chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of the position adjustment structure in the chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of the drive output structure in the chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Fig. 9 It is a partial cross-sectional view of a packed drying tower in a chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention; Fig.10 It is a schematic diagram of the structure of the spray module in the chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying in an embodiment of the present invention.

[0017] Explanation of the symbols in the schematic diagram: 1-mounting table, 2-support plate, 3-control box, 4-material receiving box, 5-first cylinder, 100-first-stage tubular cooler, 101-cooling box seat, 102-intermediate pipe, 103-guide seat, 104-movable pipe, 105-corrugated connecting pipe, 106-fixed plate, 107-telescopic cooling pipe, 108-exhaust port, 109-sealing plate, 110-second cylinder, 111-first gear, 112-gas injection pipe, 113-solenoid valve, 114-plug rod, 115-first piston, 116-first threaded rod, 118-second gear, 119- The second rack, 120-hollow tube, 121-second piston, 122-second threaded rod, 123-clamp shaft, 200-washing tower, 300-second-stage tubular cooler, 400-water mist collector, 500-packing drying tower, 501-tower body, 502-sulfuric acid tank, 503-air inlet, 504-exhaust duct, 505-recovery port, 506-tooth ring, 507-third rack, 508-spray seat, 509-roller, 510-fixed ring, 511-protrusion, 600-bubble tower, 700-chlorine gas deacidifier, 800-chlorine gas compressor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention is further described below in combination with the embodiments.

[0019] See also Figure 1 In one embodiment of the present application, a chlorine treatment method combining multi-stage cooling and double-stage sulfuric acid drying comprises the following steps: Cooling stage: the chlorine gas is passed into the washing tower 200 for washing treatment, and then the washed chlorine gas is passed into the first-stage tubular cooler 100 for preliminary cooling, and then passed into the second-stage tubular cooler 300 for secondary cooling treatment to obtain chlorine gas with a temperature value of 12-15°C; Water mist treatment stage: the cooled chlorine gas is injected into the water mist collector 400 for water mist collection. During this process, the condensed water droplets and the chlorine gas can be separated, and the obtained chlorine gas is passed to the next stage; Drying stage: the chlorine gas after the water mist capture treatment is first passed into the packed drying tower 500, and dilute sulfuric acid is sprayed on the chlorine gas passing 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 tower 600, and 98% concentrated sulfuric acid is sprayed on the bubble tower 600, so as to achieve secondary drying of the chlorine gas; Compression stage: the chlorine gas that has been secondary dried in the bubble tower 600 is input into the chlorine acid mist remover 700 to separate the chlorine gas and the acid mist, and finally the obtained chlorine gas is passed into the chlorine compressor 800 for compression treatment, and finally chlorine gas with a pressure value of 0.15-0.30MPa is obtained.

[0020] It should be specifically stated that the specific contents of the cooling stage are as follows: Initial cooling stage: inject the chlorine gas in the scrubbing tower 200 into the first-stage tubular cooler 100, seal the first-stage tubular cooler 100 and the second-stage tubular cooler 300, keep the cooling time of the chlorine gas in the first-stage tubular cooler 100 at 1 minute, and then pass it into the second-stage tubular cooler 300; Secondary cooling stage: After the chlorine gas obtained by the preliminary cooling is input 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, so as to obtain chlorine gas at 12-15°C.

[0021] See also Figure 2-Figure 10 In one embodiment of the present application, a chlorine treatment system using the chlorine treatment method described in the above embodiment is provided, wherein the chlorine treatment system comprises a washing tower 200, a multi-stage tubular cooling assembly, a water mist collector 400, a double-stage dryer, a chlorine acid removal mist collector 700 and a chlorine compressor 800, wherein the washing tower 200 is connected to the water mist collector 400 via a multi-stage tubular cooling assembly, the double-stage dryer is arranged between the water mist collector 400 and the chlorine acid removal mist collector 700, and the double-stage dryer removes water The mist collector 400 is connected to the chlorine acid removal mister 700, the chlorine compressor 800 is arranged on one side of the chlorine acid removal mister 700 and the two are connected, the chlorine treatment system also includes a mounting platform 1, a support plate 2, a control box 3 and a material receiving box 4, the multi-stage tubular cooling assembly is arranged on the mounting platform 1, the support plate 2 is arranged on the mounting platform 1 and connected to the multi-stage tubular cooling assembly, the control box 3 is arranged on the support plate 2, and the material receiving box 4 is arranged on the mounting platform 1 and connected to the double-stage dryer; The multi-stage tubular cooling assembly includes a first-stage tubular cooler 100, a second-stage tubular cooler 300 and a drive output structure. The first-stage tubular cooler 100 and the second-stage tubular cooler 300 are both arranged on a mounting platform 1. The first-stage tubular cooler 100 connects the second-stage tubular cooler 300 with a washing tower 200, and the second-stage tubular cooler 300 connects the first-stage tubular cooler 100 with a water mist collector 400. The drive output structure is arranged on a support plate 2. The first-stage tubular cooler 100 and the second-stage tubular cooler 300 are both connected to a two-stage dryer through the drive output structure. When the first-stage tubular cooler 100 or the second-stage tubular cooler 300 is working, the drive output structure is controlled to work and spray power is provided for the two-stage dryer. The second-stage tubular cooler 300 has the same structure as the first-stage tubular cooler 100.

[0022] In a specific case of this embodiment, the first-stage tube cooler 100 includes a cooling box seat 101, an intermediate tube 102, a plurality of guide seats 103, a telescopic cooling tube 107, a movable tube 104, a corrugated connecting tube 105 and a valve module. The cooling box seat 101, the intermediate tube 102 and the movable tube 104 are all arranged on the mounting platform 1. The cooling box seat 101 is arranged 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. The plurality of guide seats 103 are arranged on the outer wall of the intermediate tube 102 and are elastically connected to the movable tube 104. The movable tube 104 and the cooling box seat 101 is connected to the outside of the intermediate pipe 102 through a hose, the telescopic cooling pipes 107 are in multiple numbers and are arranged in a ring in the intermediate pipe 102, the movable pipe 104 and the cooling box seat 101 are connected to the inside of the intermediate pipe 102 through the telescopic cooling pipe 107, both ends of the telescopic cooling pipe 107 are provided with a one-way valve, the corrugated connecting pipe 105 is arranged 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 arranged in the exhaust port 108 and is connected to the intermediate pipe 102, and the movable pipe 104 controls the valve module to open when it moves to a set position relative to the intermediate pipe 102.

[0023] In another specific case of the present embodiment, the valve module includes a group of sealing plates 109, a fixed plate 106, a second cylinder 110 and a positioning structure, a group of the sealing plates 109 are symmetrically and movably arranged in the exhaust port 108, the fixed plate 106 is arranged on the mounting platform 1 and is connected to the movable tube 104, the number of the second cylinders 110 is the same as the number of the sealing plates 109 and is symmetrically arranged on the fixed plate 106, the movable end of the second cylinder 110 is connected to the sealing plate 109, the positioning structure is arranged on the fixed plate 106 and is connected to the second cylinder 110, and is used to control the extension and retraction of the second cylinder 110, the positioning structure is connected to the intermediate tube 102, and the positioning structure is controlled to work when the movable tube 104 moves relative to the intermediate tube 102.

[0024] It should be supplemented that the positioning structure includes a first gear 111, a first rack, an air injection pipe 112, a plug rod 114, a first piston 115, a first threaded rod 116 and a solenoid valve 113. The air injection pipe 112 is arranged on a fixed plate 106, the plug rod 114 is movably arranged on one side of the air injection pipe 112 and the two are elastically connected, the first piston 115 is movably arranged on the other side of the air injection pipe 112, the first threaded rod 116 is movably arranged on the air injection pipe 112 and is connected to the first piston 115, the first gear 111 is movably arranged on the fixed plate 106 and is threadedly matched with the first threaded rod 116, the first rack is arranged on the intermediate tube 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 arranged between the two.

[0025] It should be noted that the present embodiment is not limited to the above-mentioned coordination of the first threaded rod 116, the first rack and the first gear 111 to adjust the position of the first piston 115, and a linear motor or an electric cylinder may also be used instead, which are not listed here one by one.

[0026] In actual application, chlorine is introduced into the washing tower 200, and after washing treatment, the chlorine is introduced into the first-stage tubular cooler 100 and the second-stage tubular cooler 300 for cooling treatment. In this process, chlorine enters the intermediate tube 102. Since the exhaust port 108 is in a closed state, the movable tube 104 can be driven to move relative to the intermediate tube 102 under the action of air pressure, and the first rack can be driven to move synchronously. Under the meshing action between the first rack and the first gear 111, the first gear 111 can be driven to rotate, and then under the threaded cooperation between the first threaded rod 116 and the first gear 111, the first piston 115 is driven to move along the gas injection pipe 112. In order to maintain the balance of air pressure, the plug rod 114 is driven to move synchronously at this time. When the control box 3 controls the closing time of the solenoid valve 113 to reach the cooling closing time, the control box 3 controls the solenoid valve 113. The power is turned on, so that the second cylinder 110 and the gas injection pipe 112 are connected. Under the action of the elastic restoring force, the control plug rod 114 is reset relative to the gas injection pipe 112, so that the air in the second cylinder 110 is sucked into the gas injection pipe 112, thereby driving the second cylinder 110 to contract and adjust the position of the sealing plate 109, so that the exhaust port 108 is opened, and the chlorine enters the next stage to complete the closed cooling process of the chlorine. The chlorine after cooling is processed by the water mist collector 400 to discharge the condensed water droplets, and then enters the double-end dryer for multiple drying operations, and in the process of the movable tube 104 moving relative to the intermediate tube 102, it can drive the double-stage dryer to spray sulfuric acid. The chlorine after drying enters the chlorine acid mist remover 700 to remove the acid mist, and finally the chlorine enters the chlorine compressor 800 for compression to obtain chlorine with the required pressure value.

[0027] See also Figure 2 , Figure 3 , Figure 4 , Figure 8 , Fig. 9 as well as Fig.10As another preferred embodiment of the present application, the double-stage dryer includes a packing drying tower 500 and a bubble tower 600. The packing drying tower 500 and the bubble tower 600 have the same structure. The packing drying tower 500 and the bubble tower 600 are both arranged on the mounting platform 1 and the two are connected. The packing drying tower 500 is connected to the corrugated connecting pipe 105 in the second-stage tubular dryer. The packing drying tower 500 includes a tower body 501, a sulfuric acid tank 502, a spray module, an air inlet duct 503, an exhaust duct 504 and a recovery port 505. The tower body 501 is arranged on the mounting platform 1, the sulfuric acid tank 502 is arranged on the tower body 501, the air inlet and the exhaust port 108 are arranged on both sides of the tower body 501, the recovery port 505 is arranged at the bottom of the tower body 501 and is connected with the material receiving box 4, the spray module is arranged in the tower body 501 and is connected with the sulfuric acid tank 502, and is used to perform the spraying work of sulfuric acid, the spray module is connected to the drive output structure, and when the movable tube 104 moves relative to the intermediate tube 102, the drive output structure works to control the operation of the spray module.

[0028] In a specific case of the present embodiment, the spray module includes a gear ring 506, a third rack 507, a first cylinder 5, and several spray seats 508. A spray mounting seat is movably arranged in the tower body 501, and several spray seats 508 are arranged in the spray mounting seat and are elastically connected. The spray seat 508 is connected to the sulfuric acid tank 502, and the gear ring 506 is sleeved on the spray mounting seat. The third rack 507 movably passes through the tower body 501 and meshes with the gear ring 506. The first cylinder 5 is arranged 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 fixed ring 510 is arranged in the tower body 501, and a plurality of protrusions 511 are arranged on the inner wall of the fixed ring 510, and the protrusions 511 are located on the moving path of the spray seat 508.

[0029] It should be supplemented that a resistance reducing member is provided on one side of the spray seat 508 close to the fixing ring 510 , so as to reduce the friction resistance encountered when the spray seat 508 and the raised portion 511 are in contact.

[0030] It should be particularly noted that the resistance reducing component can be a ball or a roller 509. In the present embodiment, the resistance reducing component is preferably a roller 509. The roller 509 is movably arranged 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 are not listed one by one here.

[0031] In actual application, the captured chlorine can first enter the packing drying tower 500 and then enter the bubble tower 600, so as to realize the double-stage drying treatment of the chlorine. In addition, in the process of the reciprocating motion of the movable tube 104 relative to the intermediate tube 102, the driving output structure can be driven to work. When the driving output structure works, the first cylinder 5 is controlled to continuously extend and retract, thereby driving the third rack 507 to reciprocate relative to the packing and the bubble tower 600. Then, under the meshing action between the third rack 507 and the gear ring 506, the spray mounting seat can be driven to rotate repeatedly, and sulfuric acid is input into the spray seat 508 through the sulfuric acid tank 502, so as to realize the spray treatment of the passing chlorine. During the rotation of the spray mounting seat, the spray seats 508 at different positions can successively meet and collide with the raised portions 511 on the fixed ring 510, so that the spray seats 508 can reciprocate in the horizontal direction as the spray mounting seat rotates, further improving the drying treatment of the passing chlorine gas and avoiding the occurrence of dead corners in the drying process. In this process, the reciprocating movement of the movable tube 104 relative to the intermediate tube 102 can drive the telescopic cooling tube 107 to continuously retract and retract, thereby forming a flowing cooling circulation loop with the cooling box seat 101, the movable tube 104 and the telescopic cooling tube 107, further improving the cooling treatment effect of the chlorine gas.

[0032] See also Figure 2 , Figure 3 , Figure 4 , Figure 8 , Fig. 9 as well as Fig.10 As another preferred embodiment of the present application, the drive output structure includes a second rack 119, a clamping shaft 123, a second threaded rod 122, a hollow tube 120 and a second piston 121. The hollow tube 120 is arranged on the support plate 2 and is connected to the first cylinder 5. The second piston 121 is movably arranged in the hollow tube 120 and the two are elastically connected. The second threaded rod 122 is movably arranged on the hollow tube 120 and the two are threadedly matched. The second threaded rod 122 is connected to the second piston 121. A second gear 118 is movably arranged on the support plate 2 through the clamping shaft 123. The clamping shaft 123 is slidably inserted in the clamping groove of the second threaded rod 122. The second rack 119 is arranged on the movable tube 104 and meshes with the second gear 118.

[0033] In actual application, 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 clamping shaft 123 can be driven to rotate. Under the sliding cooperation between the clamping shaft 123 and the clamping groove, the second threaded rod 122 can be driven to rotate. Under the threaded cooperation between the second threaded rod 122 and the hollow tube 120, the second piston 121 can be driven to reciprocate along the hollow tube 120, thereby driving the first cylinder 5 to continuously expand and contract, thereby controlling the spray seat 508 mounting seat to continuously rotate repeatedly.

[0034] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention. In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A chlorine treatment method combining multi-stage cooling and double-stage sulfuric acid drying, characterized in that: The chlorine treatment method comprises the following steps: Cooling stage: the chlorine gas is passed into the scrubbing tower for scrubbing treatment, and then the scrubbed chlorine gas is passed into the first-stage tubular cooler for preliminary cooling, and then passed into the second-stage tubular cooler for secondary cooling treatment to obtain chlorine gas with a temperature of 12-15°C; Water mist treatment stage: the cooled chlorine gas is injected into the water mist collector for water mist capture. During this process, the condensed water droplets and chlorine gas can be separated, and the obtained chlorine gas is passed to the next stage; Drying stage: The chlorine gas after the water mist capture treatment is first passed into the packed drying tower, and dilute sulfuric acid is sprayed on the chlorine gas through the packed drying tower for preliminary drying treatment. The chlorine gas output from the packed drying tower can be discharged into the bubble tower, and 98% concentrated sulfuric acid is sprayed through the bubble tower, so as to achieve secondary drying of the chlorine gas; Compression stage: The chlorine gas that has been secondary dried in the bubble tower is input into the chlorine acid mist remover to separate the chlorine gas and the acid mist. Finally, the obtained chlorine gas is passed into the chlorine compressor for compression treatment, and finally chlorine gas with a pressure value of 0.15-0.30MPa is obtained.

2. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 1 is characterized in that: The specific contents of the cooling stage are as follows: Initial cooling stage: inject the chlorine gas in the scrubber into the first-stage tubular cooler, seal the first-stage tubular cooler and the second-stage tubular cooler, keep the cooling time of the chlorine gas in the first-stage tubular cooler at 1 minute, and then pass it into the second-stage tubular cooler; Secondary cooling stage: After the chlorine gas obtained by the initial cooling is input into the second-stage tubular cooler, the second-stage tubular cooler and the water mist collector are controlled to be closed and the cooling residence time is ensured to be 2-3 minutes, so as to obtain chlorine gas at 12-15°C.

3. A chlorine treatment system using the chlorine treatment method of claim 1, the chlorine treatment system comprising a washing tower, a multi-stage tubular cooling assembly, a water mist trap, a double-stage dryer, a chlorine acid removal mister and a chlorine compressor, the washing tower is connected to the water mist trap through the multi-stage tubular cooling assembly, the double-stage dryer is arranged between the water mist trap and the chlorine acid removal mister, the double-stage dryer connects the water mist trap and the chlorine acid removal mister, the chlorine compressor is arranged on one side of the chlorine acid removal mister and the two are connected, characterized in that The chlorine treatment system further comprises a mounting platform, a support plate, a control box and a material receiving box, wherein the multi-stage tubular cooling assembly is arranged on the mounting platform, the support plate is arranged on the mounting platform and connected to the multi-stage tubular cooling assembly, the control box is arranged on the support plate, and the material receiving box is arranged on the mounting platform and connected to the double-stage dryer; The multi-stage tubular cooling assembly includes a first-stage tubular cooler, a second-stage tubular cooler and a drive output structure. The first-stage tubular cooler and the second-stage tubular cooler are both arranged on a mounting table. The first-stage tubular cooler connects the second-stage tubular cooler with a washing tower, and the second-stage tubular cooler connects the first-stage tubular cooler with a water mist collector. The drive output structure is arranged on a support plate. The first-stage tubular cooler and the second-stage tubular cooler are both connected to a two-stage dryer through the drive output structure. When the first-stage tubular cooler or the second-stage tubular cooler is in operation, the drive output structure is controlled to operate and spray power is provided for the two-stage dryer. The second-stage tubular cooler has the same structure as the first-stage tubular cooler.

4. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 3 is characterized in that: The first-stage tubular cooler includes a cooling box seat, an intermediate tube, a plurality of guide seats, a telescopic cooling tube, a movable tube, a corrugated connecting tube and a valve module. The cooling box seat, the intermediate tube and the movable tube are all arranged on a mounting platform. The cooling box seat is arranged on one side of the intermediate tube, and the movable tube is movably sleeved on the other side of the intermediate tube. A plurality of guide seats are arranged on the outer wall of the intermediate tube and are elastically connected to the movable tube. The movable tube and the cooling box seat are connected on the outside of the intermediate tube through a hose. The number of the telescopic cooling tubes is several and arranged in the intermediate tube. The movable tube and the cooling box seat are connected on the inside of the intermediate tube through the telescopic cooling tube. Both ends of the telescopic cooling tube are provided with a one-way valve. The corrugated connecting tube is arranged on the movable tube and the two are connected. The corrugated connecting tube is provided with an exhaust port. The valve module is arranged in the exhaust port and is 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.

5. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 4 is characterized in that: The valve module includes a group of sealing plates, a fixed plate, a second cylinder and a positioning structure. A group of the sealing plates are symmetrically and movably arranged in the exhaust port. The fixed plate is arranged on the mounting platform and connected to the movable tube. The number of the second cylinders is the same as the number of the 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 positioning structure is arranged on the fixed plate and is connected to the second cylinder for controlling the extension and retraction of the second cylinder. The positioning structure is connected to the intermediate tube. When the movable tube moves relative to the intermediate tube, the positioning structure is controlled to work.

6. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 5 is characterized in that: The positioning structure includes a first gear, a first rack, an air injection pipe, a plug rod, a first piston, a first threaded rod and a solenoid valve. The air injection pipe is arranged on a fixed plate, the plug rod is movably arranged on one side of the air injection pipe and the two are elastically connected, the first piston is movably arranged on the other side of the air injection pipe, the first threaded rod is movably arranged on the air injection pipe and connected to the first piston, the first gear is movably arranged on the fixed plate and threadably matched with the first threaded rod, the first rack is arranged on the intermediate tube and meshed with the first gear, the air injection pipe is connected to the second cylinder and a solenoid valve is arranged between the two.

7. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 4 is characterized in that: The double-stage dryer includes a packed drying tower and a bubble tower, which have the same structure. The packed drying tower and the bubble tower are both arranged on a mounting platform and are connected. The packed drying tower is connected to the corrugated connecting pipe in the second-stage tubular dryer. The packed drying tower includes a tower body, a sulfuric acid tank, a spray module, an air inlet, an exhaust duct and a recovery port. The tower body is arranged on a mounting platform, the sulfuric acid tank is arranged on the tower body, the air inlet and the exhaust port are arranged on both sides of the tower body, the recovery port is arranged at the bottom of the tower body and is connected to a material receiving box, the spray module is arranged in the tower body and is connected to the sulfuric acid tank, and is used to perform the spraying of sulfuric acid. The spray module is connected to a drive output structure, and when the movable tube moves relative to the intermediate tube, the drive output structure works to control the operation of the spray module.

8. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 7 is characterized in that: The spray module includes a gear ring, a third rack, a first cylinder, and several spray seats. A spray mounting seat is movably provided in the tower body. Several spray seats are arranged in the spray mounting seat and are elastically connected. The spray seat is connected to the sulfuric acid tank. The gear ring is sleeved on the spray mounting seat. The third rack movably passes through the tower body and meshes with the gear ring. The first cylinder is arranged on a support plate and its movable end is connected to the third rack. The drive output structure is connected to the first cylinder. A fixing ring is provided in the tower body. A plurality of protrusions are arranged on the inner wall of the fixing ring. The protrusions are located on the moving path of the spray seat.

9. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 8, characterized in that: A resistance reducing member is arranged on one side of the spray seat close to the fixing ring, so as to reduce the friction resistance encountered when the spray seat and the raised part are in contact.

10. The chlorine treatment system combining multi-stage cooling and double-stage sulfuric acid drying according to claim 8, characterized in that: The drive output structure includes a second rack, a clamping shaft, a second threaded rod, a hollow tube and a second piston. The hollow tube is arranged on a support plate and is connected to the first cylinder. The second piston is movably arranged in the hollow tube and the two are elastically connected. The second threaded rod is movably arranged on the hollow tube and the two are threadedly matched. The second threaded rod is connected to the second piston. A second gear is movably arranged on the support plate through the clamping shaft. The clamping shaft is slidably inserted in the clamping groove of the second threaded rod. The second rack is arranged on the movable tube and meshes with the second gear.

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