Emergency treatment system for chlorine leakage in chemical production process

Abstract

The utility model discloses an emergency treatment system for chlorine leakage in a chemical production process, and effectively solves the problems that chlorine leakage is not treated in time after being leaked, and a spray header is inconvenient to clean after being crystallized. Comprising a chlorine supply chamber and a chlorine supply system arranged in the chlorine supply chamber, the chlorine supply system comprises a plurality of chlorine supply devices, chlorine detection devices are arranged on the chlorine supply devices, and a plurality of electric sealing doors are arranged in the chlorine supply chamber; through the arrangement of the exhaust device, the chlorine absorption tower, the horn mouth and the like, when the chlorine detection device detects the chlorine leakage problem of the chlorine supply equipment, an alarm signal is sent out, buzzing is given out, workers rapidly leave the chlorine supply chamber, the electric sealing door is closed, and at the moment, the chlorine supply chamber forms a closed environment to prevent chlorine leakage; the content of chlorine leaked into the environment is reduced, meanwhile, chlorine in the chlorine supply chamber is rapidly cleaned, and pollution to the environment and harm to the human body are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chlorine production equipment, in particular to an emergency treatment system for chlorine leakage during the chemical production process. Background Art

[0002] Chlorine is a highly toxic gas with a strong pungent odor. It mainly invades the human body through the respiratory tract and dissolves in the moisture contained in the mucous membrane, which will cause damage to the upper respiratory tract mucous membrane. Chlorine leakage will pose a great threat to property and life. Therefore, the chlorine absorption device is an essential equipment in the safe production work of chlorine-using units.

[0003] The Chinese patent with the application number CN202322499873.9 discloses an anti-scaling flushing device for a waste chlorine absorption tower, which includes a waste chlorine main pipe. One end of the waste chlorine main pipe is connected to the chlorine absorption tower. A flushing pipe is connected to the outer side of the end of the waste chlorine main pipe close to the chlorine absorption tower. The outer end of the flushing pipe is connected to a water pump through a flushing hose. A feed pipe is installed inside the water pump close to the waste chlorine main pipe. One end of the feed pipe is provided with a discharge port. The bottom of the feed pipe is connected to a slag storage bin. One side of the slag storage bin is provided with a sewage discharge port, and the outside of the sewage discharge port is connected to a sewage discharge pipe. In this anti-scaling flushing device for the waste chlorine absorption tower, the flushing pipe is provided to facilitate regular flushing of the salt scale at the inlet of the waste chlorine pipeline of the waste chlorine absorption tower, ensuring the normal suction of the decontamination system. The slag storage bin can store the waste residue after flushing, and then discharge it through the sewage discharge port, facilitating the cleaning of the sewage.

[0004] The existing chlorine absorption devices still have the following problems:

[0005] 1. When the chlorine supply equipment leaks, most of them can only play an alarm role, and there is no timely treatment for the leaked chlorine. A large part of it has entered the external air, causing great pollution to the environment and harm to workers.

[0006] 2. A spray component is arranged inside the chlorine absorption tower. By spraying sodium hydroxide solution to combine with chlorine, sodium chloride, sodium hypochlorite and water are generated. This method is prone to salt crystallization and blockage of the equipment. Most of the existing methods are to clean the intake pipe of the absorption tower, but the spray heads of the spray component also have crystallization phenomena, and it is easy to cause blockage of the spray heads over time, affecting the chlorine absorption effect. Utility Model Content

[0007] In view of the above problems, the present invention provides an emergency treatment system for chlorine leakage during the chemical production process, which can reduce the risk of chlorine leakage to the outside and clean the crystallization generated on the spray heads.

[0008] The technical solution it adopts is that the utility model includes a chlorine supply chamber and a chlorine supply system disposed in the chlorine supply chamber. The chlorine supply system includes a plurality of chlorine supply devices, and chlorine detection devices are arranged on each of the plurality of chlorine supply devices. A plurality of electric closing doors are arranged in the chlorine supply chamber. A chlorine absorption tower is arranged outside the chlorine supply chamber. An exhaust device is arranged between the chlorine absorption tower and the chlorine supply chamber. The air outlet end of the exhaust device is connected to the chlorine absorption tower through a pipeline. The air inlet end of the exhaust device is connected to an air extraction pipe communicated with the chlorine supply chamber. A plurality of branch pipes are arranged on the air extraction pipe at equal intervals. The end of the branch pipe far from the air inlet pipe is provided with a flared opening, and the flared opening is located on one side of the chlorine supply device;

[0009] A water tank is arranged at the bottom of the chlorine absorption tower. An air inlet pipe is arranged on one side of the chlorine absorption tower above the water tank. The exhaust device is connected to the air inlet pipe through a pipeline. An air outlet is arranged at the top of the chlorine absorption tower, and the air outlet is externally connected to a negative pressure device. A plurality of spray coiled pipes arranged vertically are arranged above the air inlet pipe. A packing area and a cyclone separator are arranged below the spray coiled pipes. The plurality of spray coiled pipes are externally connected to the same water pump. The water pump is connected to the water tank through a pipeline. A plurality of spray heads are arranged on the spray coiled pipes, and a cleaning component is arranged on the spray heads.

[0010] Preferably, the cleaning component includes a fixing ring coaxially fixed with the spray head. A conical block that moves up and down is arranged at the water outlet of the spray head. A plurality of spring cylinders evenly distributed in a circle are arranged at the bottom of the fixing ring. A plurality of connecting plates matched with the spring cylinders are fixed at the outer edge of the conical block. A connecting cylinder is fixed on the connecting plate. A compression plate located in the spring cylinder is fixed at the top of the connecting cylinder. An adjusting plate is arranged below the compression plate. The compression plate and the adjusting plate are connected by a spring;

[0011] A sliding groove is formed on the connecting cylinder. A plurality of screw rods coaxial with the spring cylinders penetrate through the fixing ring. A connecting block is fixed at the bottom of the screw rod, and the connecting block slides in the sliding groove. The connecting block contacts the bottom of the adjusting plate. A rotating cylinder is rotatably connected to the top of the fixing ring. A gear is coaxially fixed on the rotating cylinder, and the screw rod is threadedly connected to the gear.

[0012] Preferably, a toothed ring is rotatably connected to the fixing ring, and the toothed ring meshes with a plurality of gears.

[0013] Preferably, a limiting groove is formed in the spring cylinder, and the end of the connecting block penetrating through the sliding groove slides in the limiting groove.

[0014] Preferably, a through hole is axially formed in the conical block, and the diameter of the cross section of the through hole changes in a gradient.

[0015] Preferably, the side surface of the conical block is arc-shaped.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. Through the settings of the exhaust device, chlorine gas detection device, electric closing door, branch pipe, chlorine gas absorption tower, and bell mouth, etc., when the chlorine gas detection device detects a chlorine gas leakage problem in the chlorine gas supply equipment, it emits an alarm signal and a beeping sound. After the worker hears the beeping sound, they quickly evacuate the chlorine gas supply room. When the alarm lasts for a period of time, the electric closing door closes. At this time, the chlorine gas supply room forms a closed environment to prevent chlorine gas from leaking. It is also possible to manually control the closing of the electric closing door to reduce the content of chlorine gas leaking into the environment. At the same time, the chlorine gas supply room is quickly cleaned, reducing environmental pollution and harm to the human body.

[0018] 2. Through the settings of the fixing ring, conical block, spring cylinder, compression plate, and adjusting plate, etc., as the water pump continuously pressurizes, the conical block drives the compression plate to move downward, and the sprayed sodium hydroxide solution forms an umbrella-shaped spraying area, increasing the spraying area of the spray head to a certain extent. When the conical block is inserted into the inside of the spray head, no crystallization will occur inside it. Even if there is crystallization at the edge of its water outlet, it will fall off during the up and down movement of the conical block and under high water pressure, greatly reducing or even avoiding the problem of spray head blockage.

[0019] 3. Through the settings of the screw rod, adjusting plate, sliding groove, connecting block, and gear, etc., rotating the gear drives the screw rod to rise, and the connecting block drives the adjusting plate to move upward, reducing the compression amount of the spring. At this time, a greater pressure is required to push out the conical block. When starting up, the instantaneous pressure generated by the spray head cleans the water outlet of the spray head. For different production requirements of different factories, the pressure of the cleaning component can be adjusted, improving the universality of the cleaning component. Description of the Drawings

[0020] Figure 1 is the process schematic diagram of the present utility model.

[0021] Figure 2 is the schematic diagram of the chlorine gas supply equipment and its connectors in the present utility model.

[0022] Figure 3 is the schematic diagram of the spray coil pipe and the spray head in the present utility model.

[0023] Figure 4 is the assembly schematic diagram of the cleaning component and the spray head in the present utility model.

[0024] Figure 5 is the schematic diagram of the adjusting plate and its connectors in the present utility model.

[0025] Figure 6It is a cross-sectional view of the cleaning component in the present utility model.

[0026] Explanation of the reference numerals in the schematic diagram:

[0027] 1. Chlorine supply equipment; 2. Chlorine absorption tower; 3. Exhaust device; 4. Suction pipe; 5. Branch pipe; 6. Bell mouth; 7. Intake pipe; 8. Outlet; 9. Spray coil; 10. Water pump; 11. Spray head; 12. Fixed ring; 13. Conical block; 14. Spring cylinder; 15. Connecting plate; 16. Connecting cylinder; 17. Compression plate; 18. Adjusting plate; 19. Slide groove; 20. Screw; 21. Connecting block; 22. Rotary drum; 23. Gear; 24. Tooth ring; 25. Through hole. Specific implementation manner

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] From Figures 1 to 3Provided is a chlorine gas supply room and a chlorine gas supply system disposed in the chlorine gas supply room. The chlorine gas supply system includes a plurality of chlorine gas supply devices 1. The chlorine gas supply room is a chlorine gas supply workshop within the factory area, and the chlorine gas supply device 1 is a chlorine gas supply device 1, which is prior art and will not be elaborated here. A chlorine gas detection device is provided on each of the plurality of chlorine gas supply devices 1. The chlorine gas detection device can be a fixed chlorine gas detector for real-time monitoring of the chlorine gas supply device 1. A plurality of electric closing doors are provided in the chlorine gas supply room. When the chlorine gas detection device detects a chlorine gas leakage problem in the chlorine gas supply device 1, an alarm signal is sent and a beeping sound is emitted. After the worker hears the beeping sound, they quickly evacuate the chlorine gas supply room. When the alarm lasts for a period of time, the electric closing doors close. At this time, the chlorine gas supply room forms a closed environment to prevent chlorine gas from leaking. It is also possible to manually control the closing of the electric closing doors. A chlorine gas absorption tower 2 is provided outside the chlorine gas supply room for absorbing and treating chlorine gas. An exhaust device 3 is provided between the chlorine gas absorption tower 2 and the chlorine gas supply room. In this embodiment, the exhaust device 3 uses a suction fan. The air outlet end of the exhaust device 3 is connected to the chlorine gas absorption tower 2 through a pipeline. The air inlet end of the exhaust device 3 is connected to a suction pipe 4 communicating with the chlorine gas supply room. A plurality of branch pipes 5 are equidistantly distributed on the suction pipe 4. The end of the branch pipe 5 far from the intake pipe 7 is provided with a bell mouth 6. The bell mouth 6 is located on one side of the chlorine gas supply device 1. Only one branch pipe 5 and one bell mouth 6 can be provided between two adjacent chlorine gas supply devices 1. When the chlorine gas detection device sends an alarm signal, the exhaust device 3 is started, and the leaked chlorine gas enters the chlorine gas absorption tower 2 through the bell mouth 6;

[0030] The chlorine gas absorption tower 2 is a mature technology on the market, and its internal structures are similar. However, to further supplement the internal structure of the chlorine gas absorption tower 2, a water tank is provided at the bottom of the chlorine gas absorption tower 2. An air inlet pipe 7 is provided on one side of the chlorine gas absorption tower 2 above the water tank. The exhaust device 3 is connected to the air inlet pipe 7 through a pipeline. An air outlet 8 is provided at the top of the chlorine gas absorption tower 2, and the air outlet 8 is externally connected to a negative pressure device. In this embodiment, the negative pressure device can be an induced draft fan. Above the air inlet pipe 7, a plurality of spray coiled pipes 9 are arranged vertically. Below the spray coiled pipes 9, there is a packing area and a cyclone separator. The packing area is filled with various forms of packing materials (such as Raschig rings, Pall rings, saddle packings, etc.). These packings greatly increase the contact area between the gas-liquid two phases, enabling chlorine gas or other harmful gases to come into more sufficient contact and mixing with the absorption liquid (such as water or alkaline solution). The cyclone separator uses the principle of centrifugal force to separate the liquid droplets or fine droplets entrained in the gas from the gas. When the gas containing liquid droplets enters the cyclone separator, a strong centrifugal force will be generated during high-speed rotation, forcing the liquid droplets to move towards the wall of the device and converge, and finally fall back to the bottom of the tower or the collection system under the action of gravity, while the relatively clean gas is discharged from the top. The plurality of spray coiled pipes 9 are externally connected to the same water pump 10, and the water pump 10 is connected to the water tank through a pipeline. A plurality of spray heads 11 are provided on the spray coiled pipes 9, and a cleaning assembly is provided on the spray heads 11.

[0031] Reference Figures 4 to 6As shown, spraying sodium hydroxide solution to combine with chlorine gas is the treatment method for chlorine gas in most chlorine gas absorption towers 2. This method is prone to salt crystallization blocking the equipment. Most existing methods are to clean the intake pipe 7 of the absorption tower. However, the spray heads 11 of the spray assembly also have crystallization phenomenon, and it is very easy to cause blockage of the spray heads 11 after a long time, affecting the chlorine gas absorption effect. The cleaning assembly includes a fixed ring 12 coaxially fixed with the spray head 11. A conical block 13 that moves up and down is arranged at the water outlet of the spray head 11. When the water pump 10 stops, the conical block 13 contacts the water outlet of the spray head 11 and scrapes off the salt crystallization generated at the water outlet. A plurality of spring cylinders 14 evenly distributed in a circle are arranged at the bottom of the fixed ring 12. A plurality of connecting plates 15 matching with the spring cylinders 14 are fixed at the outer edge of the conical block 13. A connecting cylinder 16 is fixed on the connecting plate 15. A compression plate 17 located inside the spring cylinder 14 is fixed at the top of the connecting cylinder 16. An adjusting plate 18 is arranged below the compression plate 17. The compression plate 17 and the adjusting plate 18 are connected by a spring. Through the settings of the fixed ring 12, conical block 13, spring cylinder 14, compression plate 17 and adjusting plate 18, etc., when the water pump 10 is turned on, the sodium hydroxide solution enters the inside of the spray head 11 through the spray coiled pipe 9. Due to the setting of the conical block 13, when the water pressure does not reach a certain level, the conical block 13 continuously inserts into the inside of the spray head 11. As the water pump 10 continues to pressurize, the conical block 13 drives the compression plate 17 to move downward, and the sprayed sodium hydroxide solution forms an umbrella-shaped spraying area, increasing the spraying area of the spray head to a certain extent. When the conical block 13 inserts into the inside of the spray head 11, no crystallization will occur inside it. Even if there is crystallization at the edge of its water outlet, it will fall off during the up and down movement of the conical block 13 and under high water pressure, greatly reducing or even avoiding the problem of blockage of the spray head 11;

[0032] Meanwhile, since the reason for the crystallization of the spray head 11 is that the chlorine gas in the chlorine absorption tower 2 is not completely discharged and there has been a long-term shutdown, at this time, the rising chlorine gas combines with the sodium hydroxide solution attached to the spray head 11 to form crystals. The amount of crystals is often related to the residual chlorine gas in the tower and the shutdown time. If a large amount of crystals have formed at the water outlet of the spray head 11, a greater water outlet pressure is required to remove the crystals. However, the existing cleaning components and the spray head 11 often do not have the function of water pressure adjustment. A chute 19 is provided on the connecting cylinder 16. A plurality of screw rods 20 coaxial with the spring cylinder 14 are penetrated through the fixing ring 12. A connecting block 21 is fixed at the bottom of the screw rod 20. The connecting block 21 slides in the chute 19. The connecting block 21 contacts the bottom of the adjusting plate 18. A rotating cylinder 22 is rotatably connected to the top of the fixing ring 12. A gear 23 is coaxially fixed on the rotating cylinder 22. The screw rod 20 is threadedly connected to the gear 23. Through the settings of the screw rod 20, the adjusting plate 18, the chute 19, the connecting block 21 and the gear 23, rotating the gear 23 drives the screw rod 20 to rise, the connecting block 21 drives the adjusting plate 18 to move upward, and the compression amount of the spring decreases. At this time, a greater pressure is required to push out the conical block 13. When starting up, the instantaneous pressure generated by the spray head 11 cleans the water outlet of the spray head 11. For different production requirements of different factories, the pressure of the cleaning components can be adjusted, improving the universality of the cleaning components.

[0033] Reference Figure 4 and Figure 6 As shown, in order to facilitate the synchronous adjustment of multiple gears 23, a toothed ring 24 is rotatably connected to the fixing ring 12. The toothed ring 24 meshes with a plurality of gears 23.

[0034] To further supplement the structure for moving the adjusting plate 18 up and down, a limiting groove is provided in the spring cylinder 14. One end of the connecting block 21 penetrating through the chute 19 slides in the limiting groove.

[0035] Reference Figure 6 As shown, in order to increase the spraying area of the spray head 11, a through hole 25 is axially penetrated through the conical block 13. The diameter of the cross-section of the through hole 25 changes in a gradient. In this embodiment, the diameter of the through hole 25 gradually increases from top to bottom. According to the continuity equation and Bernoulli's law in fluid mechanics, when the sodium hydroxide solution passes through the through hole 25, the flow rate of the sodium hydroxide increases, which not only can expand the coverage area of the sodium hydroxide solution but also avoids the formation of crystals in the through hole 25.

[0036] To further supplement the conical block 13, the side surface of the conical block 13 is arc-shaped.

[0037] When the present utility model is in use:

[0038] First, when the chlorine gas detection device detects a chlorine gas leak in the chlorine gas supply device 1, it emits an alarm signal and produces a beeping sound. After the worker hears the beeping sound, they quickly evacuate the chlorine gas supply room. When the alarm persists for a period of time, the electric closing door closes. At this time, a closed environment is formed in the chlorine gas supply room to prevent the leakage of chlorine gas. The electric closing door can also be manually controlled to close;

[0039] Then, when the chlorine gas detection device emits an alarm signal, the exhaust device 3 starts, and the leaked chlorine gas enters the chlorine gas absorption tower 2 through the bell mouth 6;

[0040] Secondly, after the water pump 10 is turned on, the sodium hydroxide solution enters the inside of the spray head 11 through the spray coil 9. Due to the setting of the conical block 13, when the water pressure does not reach a certain level, the conical block 13 continuously plugs into the inside of the spray head 11. As the water pump 10 continuously pressurizes, the conical block 13 drives the compression plate 17 to move downward, and the sprayed sodium hydroxide solution forms an umbrella-shaped spraying area;

[0041] Finally, according to the actual production needs, the cleaning assembly can be pressure-adjusted by rotating the toothed ring 24. After the chlorine gas reacts with the sodium hydroxide solution multiple times, the clean gas is discharged through the air outlet 8.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An emergency treatment system for chlorine gas leakage in a chemical production process, comprising a chlorine gas supply room and a chlorine gas supply system placed in the chlorine gas supply room, characterized in that: The chlorine supply system includes a plurality of chlorine supply devices (1). Chlorine detection devices are provided on each of the plurality of chlorine supply devices (1). A plurality of electric closing doors are provided in the chlorine supply chamber. A chlorine absorption tower (2) is provided outside the chlorine supply chamber. An exhaust device (3) is provided between the chlorine absorption tower (2) and the chlorine supply chamber. The air outlet end of the exhaust device (3) is connected to the chlorine absorption tower (2) through a pipeline. The air inlet end of the exhaust device (3) is connected to a suction pipe (4) communicating with the chlorine supply chamber. A plurality of branch pipes (5) are equidistantly distributed on the suction pipe (4). The end of the branch pipe (5) far from the intake pipe (7) is provided with a bell mouth (6), and the bell mouth (6) is located on one side of the chlorine supply device (1). A water tank is provided at the bottom of the chlorine absorption tower (2). An intake pipe (7) is provided on one side of the chlorine absorption tower (2) above the water tank. The exhaust device (3) is connected to the intake pipe (7) through a pipeline. An air outlet (8) is provided at the top of the chlorine absorption tower (2), and the air outlet (8) is externally connected to a negative pressure device. A plurality of spray coiled pipes (9) arranged vertically are provided above the intake pipe (7). A packing area and a cyclone separator are provided below the spray coiled pipes (9). The plurality of spray coiled pipes (9) are externally connected to the same water pump (10). The water pump (10) is connected to the water tank through a pipeline. A plurality of spray heads (11) are provided on the spray coiled pipes (9), and a cleaning component is provided on the spray heads (11).

2. The emergency treatment system for chlorine gas leakage in a chemical production process according to claim 1, wherein: The cleaning component includes a fixing ring (12) fixedly coaxial with the spray head (11). A vertically movable conical block (13) is provided at the water outlet of the spray head (11). A plurality of spring cylinders (14) evenly distributed in a circle are provided at the bottom of the fixing ring (12). A plurality of connecting plates (15) matching the spring cylinders (14) are fixed at the outer edge of the conical block (13). A connecting cylinder (16) is fixed on the connecting plate (15). A compression plate (17) located in the spring cylinder (14) is fixed at the top of the connecting cylinder (16). An adjusting plate (18) is provided below the compression plate (17), and the compression plate (17) and the adjusting plate (18) are connected by a spring. A chute (19) is provided on the connecting cylinder (16). A plurality of screw rods (20) coaxial with the spring cylinders (14) are penetratingly provided on the fixing ring (12). A connecting block (21) is fixed at the bottom of the screw rod (20), and the connecting block (21) slides in the chute (19). The connecting block (21) contacts the bottom of the adjusting plate (18). A rotating cylinder (22) is rotatably connected to the top of the fixing ring (12). A gear (23) is fixedly coaxial with the rotating cylinder (22), and the screw rod (20) is threadedly connected to the gear (23).

3. The emergency treatment system for chlorine gas leakage in a chemical production process according to claim 2, wherein: A toothed ring (24) is rotatably connected to the fixing ring (12), and the toothed ring (24) meshes with a plurality of gears (23).

4. An emergency treatment system for chlorine gas leakage in a chemical production process according to claim 3, characterized in that: A limiting groove is provided in the spring cylinder (14), and one end of the connecting block (21) penetrating the chute (19) slides in the limiting groove.

5. An emergency treatment system for chlorine gas leakage in a chemical production process according to claim 4, characterized in that: The conical block (13) is axially penetrated with a through hole (25), and the diameter of the cross section of the through hole (25) varies in a gradient manner.

6. The emergency treatment system for chlorine gas leakage in a chemical production process according to claim 5, characterized in that: The side surface of the conical block (13) is arranged in an arc shape.

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