Vacuum spraying hydrogen bromide absorption device with high conversion rate

Abstract

The utility model provides a high-conversion-rate vacuum spraying hydrogen bromide absorption device, which relates to the technical field of absorption devices and comprises a bottom plate. According to the device disclosed by the utility model, harmful components in hydrogen bromide gas can be efficiently absorbed under the interaction of all the components of the device, specifically, the sufficiency of gas-liquid contact and the absorption conversion rate are remarkably improved by increasing the spraying stage number of the three groups of atomizing nozzles, the efficient operation of the absorption process is ensured, and meanwhile, the energy consumption is reduced. The three baffle plates effectively guide airflow and promote full mixing and reaction of gas and absorption liquid, in addition, the three filler layers provide a rich interface for gas-liquid mass transfer, the absorption effect is further enhanced, harmful gas can be more thoroughly captured and converted by the absorption liquid, and then the harmful gas can be more thoroughly absorbed by the absorption liquid. Residual trace harmful substances in the gas are further removed by the activated carbon adsorption plate, and finally, tiny liquid drops entrained in the gas can be effectively removed by the wire mesh demister, so that secondary pollution is avoided, and the gas emission quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of absorption devices, in particular to a high-conversion vacuum spray hydrogen bromide absorption device. Background Art

[0002] Hydrogen bromide is a colorless to light yellow toxic gas with a strong pungent odor. Its chemical properties are relatively stable, but it can exhibit certain reactivity under specific conditions (such as high temperature or in the presence of strong oxidants). In industrial production, such as in the preparation of bromides, petroleum processing, and certain organic synthesis processes, hydrogen bromide is often generated as a reactant or by-product. Since hydrogen bromide is toxic and easily combines with water to form hydrobromic acid, in practical applications, especially before being discharged from the tail gas, it must be effectively absorbed. The purpose of absorption is to prevent hydrogen bromide from leaking into the environment and causing harm to human health and the ecological system.

[0003] Existing hydrogen bromide absorption devices mostly use the spray or bubbling method for absorption, but these methods have significant drawbacks. Although the spray method can cover a certain area, the gas-liquid contact time is short and the contact is insufficient. The bubbling method is prone to the rapid rise of bubbles, reducing the gas-liquid exchange time. These problems together lead to an insufficiently optimized gas flow path in the device, and a large amount of hydrogen bromide gas is discharged without fully reacting with the absorption liquid, causing environmental pollution and wasting precious bromine resources. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems of environmental pollution and resource waste caused by a large amount of hydrogen bromide gas being discharged without fully reacting with the absorption liquid during the use of the above-mentioned equipment, and thus to propose a high-conversion vacuum spray hydrogen bromide absorption device.

[0005] To achieve the above object, the present utility model adopts the following technical solutions: A high-conversion vacuum spray hydrogen bromide absorption device, including a bottom plate, a top of the bottom plate is fixedly installed with an absorption tank, an outer wall of the absorption tank is fixedly communicated with a connecting air pipe, an output end of the connecting air pipe is fixedly communicated with a vacuum pump, an inner wall of the absorption tank is fixedly connected with three baffle plates, an inner wall of the absorption tank is fixedly connected with three packing layers, an inner wall of the absorption tank is fixedly connected with a wire mesh demister, an inner wall of the absorption tank is fixedly connected with an activated carbon adsorption plate, an outer wall of the absorption tank is fixedly communicated with a delivery pipe, an outer wall of the delivery pipe is fixedly communicated with three spray pipes, an outer wall of each of the three spray pipes is fixedly communicated with a group of atomizing nozzles, an input end of the delivery pipe is fixedly communicated with a water pump, an input end of the water pump is fixedly communicated with a connecting pipe, an input end of the connecting pipe is fixedly communicated with a liquid storage tank, a top of the liquid storage tank is fixedly installed with a driving motor, and an output end of the driving motor movably penetrates inside the liquid storage tank, an output end of the driving motor is fixedly connected with a stirring shaft, an outer wall of the stirring shaft is fixedly sleeved with a mounting ring, and an outer wall of the mounting ring is fixedly connected with three stirring blades.

[0006] Preferably, an outer wall of the absorption tank is fixedly communicated with an air inlet pipe, and an inner wall of the air inlet pipe is provided with an air inlet valve.

[0007] Preferably, a top of the absorption tank is fixedly communicated with an exhaust pipe.

[0008] Preferably, an inner wall of the exhaust pipe is provided with an exhaust valve.

[0009] Preferably, an output end of the absorption tank is fixedly communicated with a drain pipe.

[0010] Preferably, an output end of the drain pipe is fixedly communicated with a circulation pump.

[0011] Preferably, an output end of the circulation pump is fixedly communicated with a return pipe, and an output end of the return pipe is fixedly communicated with an input end of the liquid storage tank.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are that

[0013] 1. In the present utility model, through the interaction of the components of the device, the harmful components in hydrogen bromide gas can be efficiently absorbed. Specifically, the three atomizing nozzles significantly improve the adequacy of gas-liquid contact and the absorption conversion rate by increasing the spray stage, ensuring the efficient progress of the absorption process. At the same time, the three baffle plates effectively guide the gas flow, prolonging the residence time of the gas in the absorption tank and promoting the full mixing and reaction of the gas with the absorption liquid. In addition, the three packing layers are made of porous materials, providing a rich interface for gas-liquid mass transfer and further enhancing the absorption effect, enabling the harmful gas to be more thoroughly captured and converted by the absorption liquid. Subsequently, the gas treated by spraying enters the activated carbon adsorption plate area to further remove the trace harmful substances remaining in the gas. Finally, the wire mesh demister can effectively remove the tiny liquid droplets entrained in the gas, avoiding secondary pollution and ensuring the quality of gas discharge.

[0014] 2. In the present utility model, through the interaction of the components of the device, using the power of the drive motor, the three stirring blades can continuously and effectively stir the absorption liquid. This design aims to prevent the solute in the absorption liquid from depositing or caking, ensuring that the absorption liquid maintains a uniform concentration and activity. At the same time, through the operation of the circulation pump, the absorption liquid after the absorption process is pumped back into the storage tank to realize the recycling of the absorption liquid. Description of the Drawings

[0015] Figure 1 It is a three-dimensional front view structure diagram of a high-conversion vacuum spray hydrogen bromide absorption device proposed by the present utility model;

[0016] Figure 2 It is a three-dimensional partial structure diagram of a high-conversion vacuum spray hydrogen bromide absorption device proposed by the present utility model;

[0017] Figure 3 It is a three-dimensional exploded partial structure diagram of a high-conversion vacuum spray hydrogen bromide absorption device proposed by the present utility model;

[0018] Figure 4 It is a three-dimensional side exploded partial structure diagram of a high-conversion vacuum spray hydrogen bromide absorption device proposed by the present utility model.

[0019] Legend Explanation:

[0020] 1. Bottom plate; 2. Absorption tank; 3. Connecting air pipe; 4. Vacuum pump; 5. Baffle plate; 6. Packing layer; 7. Wire mesh demister; 8. Activated carbon adsorption plate; 9. Delivery pipe; 10. Spray pipe; 11. Atomizing nozzle; 12. Water pump; 13. Connecting pipe; 14. Liquid storage tank; 15. Driving motor; 16. Stirring shaft; 17. Mounting ring; 18. Stirring blade; 19. Intake pipe; 20. Intake valve; 21. Exhaust pipe; 22. Exhaust valve; 23. Drain pipe; 24. Circulation pump; 25. Return pipe. Detailed implementation mode

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0023] Embodiment 1, as Figures 1-4 shown, the present invention provides a high-conversion vacuum spray hydrogen bromide absorption device, including a bottom plate 1, a top of the bottom plate 1 is fixedly installed with an absorption tank 2, an outer surface wall of the absorption tank 2 is fixedly communicated with a connecting air pipe 3, an output end of the connecting air pipe 3 is fixedly communicated with a vacuum pump 4, an inner surface wall of the absorption tank 2 is fixedly connected with three baffle plates 5, an inner surface wall of the absorption tank 2 is fixedly connected with three packing layers 6, an inner surface wall of the absorption tank 2 is fixedly connected with a wire mesh demister 7, an inner surface wall of the absorption tank 2 is fixedly connected with an activated carbon adsorption plate 8, an outer surface wall of the absorption tank 2 is fixedly communicated with a delivery pipe 9, an outer surface wall of the delivery pipe 9 is fixedly communicated with three spray pipes 10, an outer surface wall of each of the three spray pipes 10 is fixedly communicated with a group of atomizing nozzles 11, an input end of the delivery pipe 9 is fixedly communicated with a water pump 12, an input end of the water pump 12 is fixedly communicated with a connecting pipe 13, an input end of the connecting pipe 13 is fixedly communicated with a liquid storage tank 14, a top of the liquid storage tank 14 is fixedly installed with a driving motor 15, and an output end of the driving motor 15 movably penetrates inside the liquid storage tank 14, an output end of the driving motor 15 is fixedly connected with a stirring shaft 16, an outer surface wall of the stirring shaft 16 is fixedly sleeved with a mounting ring 17, and an outer surface wall of the mounting ring 17 is fixedly connected with three stirring blades 18.

[0024] The effect achieved by the entire Embodiment 1 is as follows. First, start the vacuum pump 4. This pump extracts the gas inside the absorption tank 2 through the connecting air pipe 3, aiming to evacuate the inside of the absorption tank 2 to a vacuum state. The formation of the vacuum state helps to reduce the pressure inside the tank, thereby promoting the natural inflow of hydrogen bromide gas. When the hydrogen bromide gas enters the inside of the absorption tank 2, in order to effectively absorb these harmful gases, immediately start the water pump 12. The water pump 12 is responsible for extracting the absorption liquid from inside the liquid storage tank 14 and pushing it through pressurization to the delivery pipe 9. Subsequently, the absorption liquid flows through the three spray pipes 10 and is evenly sprayed in the form of fine mist droplets under the action of the three groups of atomizing nozzles 11. This atomizing spray method significantly increases the gas-liquid contact area, promotes the dissolution and absorption of hydrogen bromide gas, and improves the sufficiency and conversion rate of the absorption process. In addition, three baffle plates 5 are fixedly installed on the inner surface wall of the absorption tank 2. The function of the three baffle plates 5 is to change the flow direction of the gas, causing the gas to form a more complex flow path inside the tank, thereby prolonging the residence time of the gas inside the tank and further improving the absorption efficiency. At the same time, three packing layers 6 are provided inside the tank. These packing layers 6 provide a larger gas-liquid contact area, enhance the mass transfer effect of the absorption liquid, and contribute to more efficiently removing hydrogen bromide gas. The gas after being absorbed by the triple spray and the packing layer 6 will then be treated by the wire mesh demister 7. The main function of the wire mesh demister 7 is to remove the liquid droplets entrained in the gas and ensure the cleanliness of the discharged gas. Finally, to further improve the purification effect, an activated carbon adsorption plate 8 is fixedly connected to the inner surface wall of the absorption tank 2. The activated carbon adsorption plate 8 utilizes its strong adsorption ability to further adsorb and remove the residual harmful substances, thereby ensuring that the finally discharged gas meets the environmental protection standards.

[0025] Embodiment 2 is as Figures 2-4 shown. The outer surface wall of the absorption tank 2 is fixedly communicated with an air inlet pipe 19. An air inlet valve 20 is arranged on the inner surface wall of the air inlet pipe 19. The top of the absorption tank 2 is fixedly communicated with an exhaust pipe 21. An exhaust valve 22 is arranged on the inner surface wall of the exhaust pipe 21. The output end of the absorption tank 2 is fixedly communicated with a drain pipe 23. The output end of the drain pipe 23 is fixedly communicated with a circulation pump 24. The output end of the circulation pump 24 is fixedly communicated with a return pipe 25, and the output end of the return pipe 25 is fixedly communicated with the input end of the liquid storage tank 14.

[0026] The effect achieved by the entire Embodiment 2 is as follows. First, an appropriate amount of absorbent liquid is added to the interior of the liquid storage tank 14 to ensure effective absorption during subsequent spraying. Subsequently, the drive motor 15 is started, and its output drives the stirring shaft 16 and the three stirring blades 18 to rotate through a transmission device. The main purpose of this action is to fully stir and mix the absorbent liquid to prevent phenomena such as stratification, precipitation, or uneven concentration of the absorbent liquid during long-term standing or spraying processes. These situations may affect the absorption effect and even cause blockage of the spraying system. At the same time, to achieve the recycling of the absorbent liquid, the circulation pump 24 is started. The function of the circulation pump 24 is to pump the absorbent liquid that has passed through the absorption tank 2 and already contains the absorbed substance back to the liquid storage tank 14. This circulation process not only realizes the reuse of the absorbent liquid, reducing resource waste, but also ensures the uniformity and stability of the absorbent liquid throughout the treatment process through continuous stirring and mixing. The recycling process will continue until the active ingredient in the absorbent liquid reaches a preset saturation point or can no longer effectively absorb more hydrogen bromide gas.

[0027] Working principle: When in use, firstly, a proper amount of absorption liquid needs to be accurately injected into the liquid storage tank 14, then, the driving motor 15 is started, and its output end drives the stirring shaft 16 to rotate, and the stirring shaft 16 then drives the three stirring blades 18 to rotate, so that the absorption liquid is fully stirred and mixed. In this way, the components in the absorption liquid are ensured to be evenly distributed, and the stratification and precipitation during the spraying process are prevented, thereby affecting the absorption effect or causing the nozzle to be blocked. Then, the vacuum pump 4 efficiently extracts the gas from the inside of the absorption tank 2 through the connecting air pipe 3, so that a stable vacuum state is formed and maintained inside the absorption tank 2, and in the vacuum Under these conditions, the molecular distance of hydrogen bromide gas increases and the movement speed slows down, which is conducive to the full contact and reaction between gas molecules and the solute or adsorbent in the absorption liquid. Once the hydrogen bromide gas enters the absorption tank 2 through the air inlet pipe 19, the staff immediately starts the water pump 12. The water pump 12 extracts the absorption liquid from the liquid storage tank 14 based on the centrifugal principle, and pressurizes the absorption liquid through the principle of converting mechanical energy into fluid pressure. The pressurized absorption liquid flows along the delivery pipe 9 to the three spray pipes 10, and finally, under the action of each three groups of atomizing nozzles 11, it is evenly sprayed in the form of fine droplets. This atomizing spraying technology greatly increases the gas-liquid contact area. , which promotes the dissolution and absorption of hydrogen bromide gas. At the same time, by increasing the number of spray stages, the sufficiency and conversion rate of the absorption process are further improved. When the hydrogen bromide gas flows inside the absorption tank 2, it will pass through three baffles 5 in sequence. The three baffles 5 cleverly guide the gas flow path, extend the residence time of the gas in the tank, and promote turbulent mixing between the gas and the absorption liquid, thereby enhancing the absorption effect. In addition, three packing layers 6 are fixedly installed on the inner surface wall of the absorption tank 2. The three packing layers 6 are usually made of metal mesh with good wettability and chemical stability, and the porous structure of the three packing layers 6 is gas-liquid mass transfer. It provides a rich interface and further improves the absorption efficiency. The tiny droplets entrained by the hydrogen bromide gas treated by triple spraying and the packing layer 6 are then captured and removed by the wire mesh demister 7. The wire mesh demister 7 uses its fine mesh structure to effectively intercept and separate the droplets in the gas to ensure the quality of the gas discharged or subsequently treated. Finally, in order to further purify the gas, the inner wall of the absorption tank 2 is also fixedly connected with an activated carbon adsorption plate 8. The activated carbon, with its high specific surface area and excellent adsorption performance, can deeply remove the trace harmful substances remaining in the gas, thereby ensuring the purity and safety of the gas finally discharged or reused.

[0028] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high conversion rate vacuum spray hydrogen bromide absorption device, comprising a bottom plate (1), characterized in that: An absorption tank (2) is fixedly mounted on the top of the bottom plate (1); an outer wall of the absorption tank (2) is fixedly connected to a connecting air pipe (3); an output end of the connecting air pipe (3) is fixedly connected to a vacuum pump (4); an inner wall of the absorption tank (2) is fixedly connected to three baffles (5); an inner wall of the absorption tank (2) is fixedly connected to three packing layers (6); an inner wall of the absorption tank (2) is fixedly connected to a wire mesh demister (7); an inner wall of the absorption tank (2) is fixedly connected to an activated carbon adsorption plate (8); an outer wall of the absorption tank (2) is fixedly connected to a delivery pipe (9); an outer wall of the delivery pipe (9) is fixedly connected to three spray pipes (10); the three spray pipes The outer wall of each of the plurality of atomizing nozzles (10) is fixedly connected to a group of atomizing nozzles (11); the input end of the delivery pipe (9) is fixedly connected to a water pump (12); the input end of the water pump (12) is fixedly connected to a connecting pipe (13); the input end of the connecting pipe (13) is fixedly connected to a liquid storage tank (14); a driving motor (15) is fixedly installed on the top of the liquid storage tank (14); the output end of the driving motor (15) is movably inserted into the interior of the liquid storage tank (14); the output end of the driving motor (15) is fixedly connected to a stirring shaft (16); a mounting ring (17) is fixedly sleeved on the outer wall of the stirring shaft (16); and three stirring blades (18) are fixedly connected to the outer wall of the mounting ring (17).

2. A high conversion rate vacuum spray hydrogen bromide absorption device according to claim 1, characterized in that: The outer wall of the absorption tank (2) is fixedly connected to an air intake pipe (19), and the inner wall of the air intake pipe (19) is provided with an air intake valve (20).

3. A high conversion rate vacuum spray hydrogen bromide absorption device according to claim 2, characterized in that: The top of the absorption tank (2) is fixedly connected to an exhaust pipe (21).

4. A high conversion rate vacuum spray hydrogen bromide absorption device according to claim 3, characterized in that: An exhaust valve (22) is provided on the inner surface wall of the exhaust pipe (21).

5. A high conversion rate vacuum spray hydrogen bromide absorption device according to claim 4, characterized in that: The output end of the absorption tank (2) is fixedly connected to a liquid discharge pipe (23).

6. A high conversion rate vacuum spray hydrogen bromide absorption device according to claim 5, characterized in that: The output end of the liquid discharge pipe (23) is fixedly connected to a circulation pump (24).

7. A high conversion rate vacuum spray hydrogen bromide absorption device according to claim 6, characterized in that: The output end of the circulation pump (24) is fixedly connected to a reflux pipe (25), and the output end of the reflux pipe (25) is fixedly connected to the input end of the liquid storage tank (14).

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