High-purity hydrobromic acid secondary rectification device

Abstract

The utility model provides a secondary rectification device for high-purity hydrobromic acid, which relates to the technical field of rectification devices and comprises a bottom plate, a rectification device body is fixedly mounted at the top of the bottom plate, a condenser is fixedly communicated with the top of the rectification device body, a gas delivery pipe is fixedly communicated with the top of the condenser, and a filter tank is fixedly communicated with the output end of the gas delivery pipe. A ventilation hole is formed in the top of the filtering tank, an exhaust fan is fixedly inserted into the inner surface wall of the ventilation hole, and the top of the filtering tank fixedly communicates with an exhaust pipe. According to the device disclosed by the utility model, under the interaction of all the components of the device, waste gas generated in the rectification process can be efficiently filtered, pollutants such as acid gas, harmful organic matters and peculiar smell in the waste gas can be effectively removed, the harmful substances are prevented from being directly discharged into the atmosphere, and the discharged waste gas is ensured to meet the national environmental protection standard; therefore, the environment is actively protected, and air pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation devices, in particular to a high-purity hydrobromic acid secondary distillation device. Background Art

[0002] Hydrobromic acid is an aqueous solution of hydrogen bromide. It is a colorless or light yellow liquid with strong acidity and pungent odor. It is widely used in chemical, pharmaceutical and other fields. The high-purity hydrobromic acid secondary distillation device is a device used to purify hydrobromic acid. It uses two consecutive distillation processes to finely separate hydrobromic acid containing impurities. In the device, the difference in boiling points of each component is used to achieve effective separation of impurities and high-purity hydrobromic acid under specific temperature and pressure conditions, thereby obtaining a high-purity hydrobromic acid product.

[0003] During the distillation process of the high-purity hydrobromic acid secondary distillation device, waste gas containing unreacted products, by-products and trace amounts of harmful gases will be generated due to the possibility of non-volatile or difficult-to-volatile impurities in the raw materials and the fluctuation of operating conditions. The waste gas mainly contains hydrogen bromide, hydrogen, incompletely separated organic matter and a small amount of other impurities. Existing devices usually treat and discharge the waste gas by simple water absorption. However, this method may not be able to completely remove all harmful substances in the waste gas, especially for some gas components that are difficult to dissolve in water. At the same time, if the waste gas after simple treatment is directly discharged, it may pollute the environment and affect the air quality. Utility Model Content

[0004] The utility model aims to solve the problem of environmental pollution caused by the exhaust gas containing harmful substances during the use of the high-purity hydrobromic acid secondary distillation device, thereby proposing a high-purity hydrobromic acid secondary distillation device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-purity hydrobromic acid secondary distillation device, comprising a bottom plate, a distillation device body is fixedly installed on the top of the bottom plate, a condenser is fixedly connected to the top of the distillation device body, a gas pipe is fixedly connected to the top of the condenser, a filter tank is fixedly connected to the output end of the gas pipe, a ventilation hole is opened on the top of the filter tank, an exhaust fan is fixedly inserted into the inner surface wall of the ventilation hole, an exhaust pipe is fixedly connected to the top of the filter tank, a liquid infusion pipe is fixedly connected to the outer surface wall of the filter tank, the output end of the liquid infusion pipe is fixedly connected to a spray pipe, a group of nozzles are fixedly connected to the outer surface wall of the spray pipe, a water pump is fixedly connected to the input end of the water pump, a connecting pipe is fixedly connected to the input end of the connecting pipe, and a liquid storage tank is fixedly connected to the input end of the connecting pipe.

[0006] Preferably, a packing layer is fixedly connected to the inner surface wall of the filter tank.

[0007] Preferably, an activated carbon filter plate is fixedly connected to the inner surface wall of the filter tank.

[0008] Preferably, the output end of the filter tank is fixedly connected to a drain pipe.

[0009] Preferably, a filter screen is fixedly connected to the inner surface wall of the drain pipe.

[0010] Preferably, the output end of the drainage pipe is fixedly connected to a circulation pump.

[0011] Preferably, the output end of the circulation pump is fixedly connected to a delivery pipe, and the output end of the delivery pipe is fixedly connected to the input end of the liquid storage tank.

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

[0013] 1. In the utility model, through the interaction of the various components of the device, the waste gas generated in the distillation process can be efficiently filtered, and the pollutants such as acidic gases, harmful organic matter and odor in the waste gas can be effectively removed to prevent these harmful substances from being directly discharged into the atmosphere, ensuring that the discharged waste gas meets the national environmental protection standards, thereby actively protecting the environment and reducing air pollution.

[0014] 2. In the utility model, through the interaction of the various components of the device, the alkaline solution that has absorbed the exhaust gas components can be pumped back to the liquid storage tank by the drive of the circulation pump, thereby realizing the recycling of the solution, reducing waste liquid discharge, and making the operation of the device more environmentally friendly and economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main structural stereogram of a high-purity hydrobromic acid secondary distillation device;

[0016] Figure 2 A three-dimensional exploded diagram of part of the structure of a high-purity hydrobromic acid secondary distillation device is provided for the utility model;

[0017] Figure 3 The utility model provides a partial structural sectional stereoscopic exploded diagram of a high-purity hydrobromic acid secondary distillation device;

[0018] Figure 4 The utility model provides a partial structural stereoscopic exploded side view of a high-purity hydrobromic acid secondary distillation device.

[0019] Legend:

[0020] 1. Bottom plate; 2. Distillation device body; 3. Condenser; 4. Gas pipe; 5. Filter tank; 6. Ventilation hole; 7. Exhaust fan; 8. Exhaust pipe; 9. Liquid infusion pipe; 10. Spray pipe; 11. Nozzle; 12. Water pump; 13. Connecting pipe; 14. Liquid storage tank; 15. Packing layer; 16. Activated carbon filter plate; 17. Drain pipe; 18. Filter screen; 19. Circulation pump; 20. Delivery pipe. DETAILED DESCRIPTION

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

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a high-purity hydrobromic acid secondary distillation device, comprising a bottom plate 1, a distillation device body 2 is fixedly installed on the top of the bottom plate 1, a condenser 3 is fixedly connected to the top of the distillation device body 2, a gas pipe 4 is fixedly connected to the top of the condenser 3, a filter tank 5 is fixedly connected to the output end of the gas pipe 4, a ventilation hole 6 is opened on the top of the filter tank 5, an exhaust fan 7 is fixedly inserted into the inner surface wall of the ventilation hole 6, an exhaust pipe 8 is fixedly connected to the top of the filter tank 5, a liquid infusion pipe 9 is fixedly connected to the outer wall of the filter tank 5, a spray pipe 10 is fixedly connected to the output end of the liquid infusion pipe 9, a group of nozzles 11 are fixedly connected to the outer wall of the spray pipe 10, a water pump 12 is fixedly connected to the input end of the liquid infusion pipe 9, a connecting pipe 13 is fixedly connected to the input end of the water pump 12, and a liquid storage tank 14 is fixedly connected to the input end of the connecting pipe 13.

[0024] The effect achieved by the entire embodiment 1 is that after the exhaust gas enters the filter tank 5, the water pump 12 is first started. After the water pump 12 is started, its main function is to extract an alkaline solution such as a sodium hydroxide solution from the inside of the liquid storage tank 14 and pressurize the solution. The pressurized alkaline solution flows smoothly to the spray pipe 10 through the infusion pipe 9, and under the spraying action of a group of nozzles 11, the alkaline solution is uniformly sprayed in the form of a mist spray. This step is intended to neutralize the acidic components such as hydrogen bromide in the exhaust gas, thereby effectively reducing the acidity and toxicity of the exhaust gas. In addition, the inner surface wall of the filter tank 5 is also fixedly connected with a packing layer 15, and the packing layer 15 Usually made of porous stainless steel materials, such as stainless steel packing balls and packing rings, these materials have the structural characteristics of large specific surface area and high porosity. This structure can increase the contact area between the exhaust gas and the alkaline solution, improve the efficiency and effect of the neutralization reaction, and further purify the exhaust gas. At the same time, the inner wall of the filter tank 5 is also fixedly connected with an activated carbon filter plate 16. The activated carbon filter plate 16 uses its strong adsorption capacity to further adsorb and filter organic matter, trace harmful gases and residual hydrogen bromide that may still exist in the exhaust gas after preliminary neutralization, so as to ensure that the exhaust gas finally discharged meets environmental protection standards.

[0025] Embodiment 2, as Figure 2-Figure 4 As shown, a packing layer 15 is fixedly connected to the inner wall of the filter tank 5, an activated carbon filter plate 16 is fixedly connected to the inner wall of the filter tank 5, a drain pipe 17 is fixedly connected to the output end of the filter tank 5, a filter screen 18 is fixedly connected to the inner wall of the drain pipe 17, a circulation pump 19 is fixedly connected to the output end of the drain pipe 17, a delivery pipe 20 is fixedly connected to the output end of the circulation pump 19, and the output end of the delivery pipe 20 is fixedly connected to the input end of the liquid storage tank 14.

[0026] The effect achieved by the entire embodiment 2 is that during the spraying process, the reacted solution will fall to the bottom of the inner wall of the filter tank 5 by gravity. At this time, the circulation pump 19 is started. After the circulation pump 19 is started, the alkaline solution that has absorbed the harmful components in the exhaust gas is extracted from the bottom of the filter tank 5 through the drainage pipe 17. A filter screen 18 is fixedly connected to the inner surface of the drainage pipe 17. The main function of the filter screen 18 is to filter out suspended matter, impurities and solid precipitates that may be formed in the solution to prevent these substances from clogging the pipeline or affecting the subsequent treatment effect. The filtered solution, under the pressurized action of the circulation pump 19, flows back to the liquid storage tank 14 through the delivery pipe 20, thereby realizing the recycling of the solution. This process not only reduces the generation of waste liquid, but also improves the use efficiency of the alkaline solution. Through continuous circulation, the solution can continue to absorb harmful substances in the exhaust gas until it reaches absorption saturation. At this time, it is necessary to replace a new alkaline solution or perform regeneration treatment to ensure the continuous and effective operation of the exhaust gas treatment system.

[0027] Working principle: When in use, first inject an appropriate amount of alkaline solution into the liquid storage tank 14 to prepare for the treatment of the exhaust gas. Then, start the exhaust fan 7. After the exhaust fan 7 is started, negative pressure is generated. This negative pressure effect forms a low-pressure area inside the filter tank 5, thereby guiding the exhaust gas to enter the filter tank 5 through the gas pipe 4. When the exhaust gas generated by the distillation process or other processes reaches the filter tank 5 through the gas pipe 4, first start the water pump 12. The water pump 12 extracts the alkaline solution inside the liquid storage tank 14 through the centrifugal principle and pressurizes the solution so that it flows smoothly to the spray pipe 10 through the liquid pipe 9. The outer wall of the spray pipe 10 is fixedly connected to a group of nozzles 11. Under the spraying action of a group of nozzles 11, the alkaline solution is sprayed in the form of fine water mist or spray flow, which fully contacts and reacts with the exhaust gas entering the filter tank 5, thereby removing the acidic gas or other harmful components therein. In addition, the inner wall of the filter tank 5 is fixedly connected to a packing layer 15. The porous or mesh structure of the packing layer 15 can increase The gas-liquid contact area prolongs the contact time between the exhaust gas and the alkaline solution, thereby improving the efficiency of the exhaust gas treatment. The exhaust gas treated by spraying continues to move to the activated carbon filter plate 16 under the guidance of the negative pressure of the exhaust fan 7. The activated carbon filter plate 16 uses its strong adsorption capacity to further filter out the residual harmful substances in the exhaust gas, such as organic pollutants, odors, etc., to ensure that the discharged gas meets the environmental protection standards. The alkaline solution after spraying and filtration then falls to the bottom of the inner wall of the filter tank 5 by gravity. At this time, the circulation pump 19 is started. The circulation pump 19 extracts the alkaline solution that has absorbed the exhaust gas components from the bottom of the filter tank 5 through the drainage pipe 17. During the drainage process, the filter screen 18 fixedly connected to the inner wall of the drainage pipe 17 will filter out the suspended matter, impurities and precipitation in the solution to prevent these substances from entering the circulation system or clogging the pipeline. The filtered solution flows back to the liquid storage tank 14 through the delivery pipe 20 under the pressurized action of the circulation pump 19, thereby realizing the recycling of the alkaline solution.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A high-purity hydrobromic acid secondary distillation device, comprising a bottom plate (1), characterized in that: A rectification device body (2) is fixedly mounted on the top of the bottom plate (1); a condenser (3) is fixedly connected to the top of the rectification device body (2); a gas supply pipe (4) is fixedly connected to the top of the condenser (3); an output end of the gas supply pipe (4) is fixedly connected to a filter tank (5); a ventilation hole (6) is opened on the top of the filter tank (5); an exhaust fan (7) is fixedly inserted into the inner surface wall of the ventilation hole (6); an exhaust pipe (8) is fixedly connected to the top of the filter tank (5); a liquid infusion pipe (9) is fixedly connected to the outer surface wall of the filter tank (5); the output end of the liquid infusion pipe (9) is fixedly connected to a spray pipe (10); the outer surface wall of the spray pipe (10) is fixedly connected to a group of nozzles (11); an input end of the liquid infusion pipe (9) is fixedly connected to a water pump (12); an input end of the water pump (12) is fixedly connected to a connecting pipe (13); and an input end of the connecting pipe (13) is fixedly connected to a liquid storage tank (14).

2. A high-purity hydrobromic acid secondary distillation device according to claim 1, characterized in that: A packing layer (15) is fixedly connected to the inner surface wall of the filter tank (5).

3. A high-purity hydrobromic acid secondary distillation device according to claim 2, characterized in that: An activated carbon filter plate (16) is fixedly connected to the inner surface wall of the filter tank (5).

4. A high-purity hydrobromic acid secondary distillation device according to claim 3, characterized in that: The output end of the filter tank (5) is fixedly connected to a liquid discharge pipe (17).

5. A high-purity hydrobromic acid secondary distillation device according to claim 4, characterized in that: A filter screen (18) is fixedly connected to the inner surface wall of the liquid discharge pipe (17).

6. A high-purity hydrobromic acid secondary distillation device according to claim 5, characterized in that: The output end of the liquid discharge pipe (17) is fixedly connected to a circulation pump (19).

7. A high-purity hydrobromic acid secondary distillation device according to claim 6, characterized in that: The output end of the circulation pump (19) is fixedly connected to a delivery pipe (20), and the output end of the delivery pipe (20) is fixedly connected to the input end of the liquid storage tank (14).

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