Phosphorus trichloride tail gas absorption device

Abstract

The utility model provides a phosphorus trichloride tail gas absorption device which comprises a box body and a cover plate, the cover plate is rotatably connected to the upper end of the box body through a rotating shaft, the upper end of the cover plate is fixedly connected with a water pump, the side end of the box body is fixedly connected with a water storage tank, and the upper end of the water storage tank is fixedly connected with a vertical pipe. The upper end of the vertical pipe is fixedly connected with a cooling box, a water pipe is connected between the water pump and the cover plate, and a water diversion pipe is connected between the water pipe and the cooling box. Through the cooling pipe and the filtering absorber in the cooling box, the temperature of phosphorus trichloride tail gas can be effectively reduced, harmful substances in the tail gas can be removed, the purification effect is remarkable, pollution to the environment is reduced, and safety of surrounding personnel and equipment is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and specifically relates to a phosphorus trichloride tail gas absorption device. Background Art

[0002] Phosphorous acid can be obtained as a by-product after washing with water. Phosphorous acid is a widely used chemical raw material, mainly used to manufacture plastic stabilizers, water stabilizers, fungicides, organophosphorus pesticides, etc. Phosphorus trichloride will be discharged along with the exhaust gas in the phosphorus trichloride production equipment, which not only causes waste in production, but also damages the natural environment.

[0003] However, although the equipment currently used to recover phosphorus trichloride tail gas is relatively complete, the existing phosphorus trichloride tail gas recovery device generally directly injects the phosphorus trichloride tail gas into the treatment equipment for treatment reaction. The high temperature phosphorus trichloride tail gas will accelerate the corrosion rate of the internal parts of the equipment, shorten the effective service life of the internal parts of the equipment, and increase the cost investment of phosphorus trichloride tail gas treatment.

[0004] The authorization publication number "CN216149391U" records a phosphorus trichloride tail gas absorption device, which relates to the field of gas purification. The phosphorus trichloride tail gas absorption device includes an equipment body, a water pump, two water pipes and a cooling box, wherein the water pump is fixedly connected to the top of the equipment body, the cooling box is fixedly connected to the top of one side of the equipment body, and a collection mechanism is provided inside the cooling box. The phosphorus trichloride tail gas absorption device, the phosphorus trichloride tail gas introduced into the cooling box through the air inlet pipe is dispersed and cooled by multiple horizontal plates, so that the phosphorus trichloride tail gas is quickly cooled by the liquid introduced by the shunt pipe, which is beneficial to improve the efficiency of phosphorus trichloride tail gas cooling, ensure that the water contained in the phosphorus trichloride tail gas is condensed to adsorb and clean the impurities contained in the phosphorus trichloride tail gas; the water condensed from the phosphorus trichloride tail gas is absorbed by the absorbent sponge and then flows into the liquid storage tank fixedly connected to the bottom of the vertical pipe, reducing the corrosion of the impurity water contained in the phosphorus trichloride tail gas to the parts.

[0005] In the phosphorus trichloride tail gas absorption device of the technical solution, the phosphorus trichloride tail gas introduced into the cooling box through the air inlet pipe is dispersedly cooled by a plurality of horizontal plates, so that the phosphorus trichloride tail gas is quickly cooled by the liquid introduced by the diversion pipe, which is beneficial to improving the cooling efficiency of the phosphorus trichloride tail gas, ensuring that the water contained in the phosphorus trichloride tail gas is condensed to adsorb and clean the impurities contained in the phosphorus trichloride tail gas; the water condensed from the phosphorus trichloride tail gas is absorbed and collected by the water-absorbing sponge and then flows into the liquid storage tank fixedly connected to the bottom of the vertical pipe, thereby reducing the corrosion of the impurity water contained in the phosphorus trichloride tail gas to the parts.

[0006] Existing phosphorus trichloride tail gas treatment devices have certain problems in terms of purification effect, ease of operation and safety. Some devices have low purification efficiency and cannot effectively remove harmful substances in tail gas, causing environmental pollution and health risks. In addition, some devices are complicated to operate and require professional maintenance and management, and the device structure is not stable enough, posing operational safety risks. Utility Model Content

[0007] The purpose of the utility model is to provide a phosphorus trichloride tail gas absorption device, which aims to solve certain problems in the purification effect, operation convenience and safety of the phosphorus trichloride tail gas treatment device in the prior art. The purification efficiency of some devices is not high, and the harmful substances in the tail gas cannot be effectively removed, causing environmental pollution and health risks. In addition, some devices are complicated to operate and require professional personnel to perform maintenance and management, and the device structure is not stable enough, and there are hidden safety hazards in operation.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A phosphorus trichloride tail gas absorption device comprises a box body and a cover plate, wherein the cover plate is rotatably connected to the upper end of the box body through a rotating shaft, the upper end of the cover plate is fixedly connected to a water pump, the side end of the box body is fixedly connected to a water storage tank, the upper end of the water storage tank is fixedly connected to a vertical pipe, the upper end of the vertical pipe is fixedly connected to a cooling box, a water pipe is connected between the water pump and the cover plate, and a water diversion pipe is connected between the water pipe and the cooling box.

[0010] As a preferred solution of this embodiment, a cooling pipe is fixedly connected in the cooling box, a filter absorber is arranged at the lower end of the cooling pipe, and a one-way valve is fixedly connected to the lower end of the filter absorber.

[0011] As a preferred solution of this embodiment, the side end of the vertical pipe is fixedly connected with an air guide pipe, and the side end of the cooling box is fixedly connected with an air intake pipe.

[0012] As a preferred solution of this embodiment, an anti-corrosion inner sleeve is fixedly connected inside the air intake pipe, and a blocking block is sleeved and connected to the circumferential surface of the anti-corrosion inner sleeve.

[0013] As a preferred solution of this embodiment, an observation window is fixedly connected to one side end of the box body, and a handle is fixedly connected to the other side end of the box body.

[0014] As a preferred solution of this embodiment, the lower end of the box body is fixedly connected to a bottom plate, and the lower end of the bottom plate is fixedly connected to a universal wheel.

[0015] As a preferred solution of this embodiment, the height of the box is 50 cm.

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

[0017] The utility model can effectively reduce the temperature of phosphorus trichloride tail gas and remove harmful substances in the tail gas through the cooling pipe and filter absorber in the cooling box, and the purification effect is remarkable. This not only reduces pollution to the environment, but also ensures the safety of surrounding personnel and equipment. The use of observation windows and handles and other designs makes it convenient for operators to observe the internal operation of the device in real time and control the start and stop, reducing the difficulty of operation. At the same time, the overall structure of the device is stable and the components are tightly connected, which improves the operating safety of the device. In addition, the device can be moved and stored in a safe place, which is convenient for daily maintenance and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a first-perspective stereogram of the present invention;

[0020] Figure 2 It is a second perspective stereogram of the utility model;

[0021] Figure 3 It is an exploded view of the utility model;

[0022] Figure 4 For this utility model Figure 2 Internal cross-sectional view of the cooling box.

[0023] As shown in the figure: 1. Box body; 2. Cover plate; 3. Bottom plate; 4. Observation window; 5. Universal wheel; 6. Water storage tank; 7. Vertical pipe; 8. Cooling box; 9. Air intake pipe; 10. Water pump; 11. Water pipe; 12. Water diversion pipe; 13. Blocking block; 14. Anti-corrosion inner sleeve; 15. Cooling pipe; 16. Filter absorber; 17. Air guide pipe; 18. One-way valve; 19. Handle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 4As shown, the utility model embodiment provides a phosphorus trichloride tail gas absorption device, specifically comprising a box body and a cover plate 2, the cover plate 2 is rotatably connected to the upper end of the box body 1 through a rotating shaft, the upper end of the cover plate 2 is fixedly connected to a water pump 10, the side end of the box body 1 is fixedly connected to a water storage tank 6, the upper end of the water storage tank 6 is fixedly connected to a vertical pipe 7, the upper end of the vertical pipe 7 is fixedly connected to a cooling box 8, a water pipe 11 is connected between the water pump 10 and the cover plate 2, and a water diversion pipe 12 is connected between the water pipe 11 and the cooling box 8. In a specific embodiment, the box body 1 provides the main structure of the device, which is used to accommodate other components and maintain overall stability. The cover plate 2 is rotatably connected to the upper end of the box body 1 through a rotating shaft, which is convenient for maintenance and operation, and can control the speed and flow rate of the tail gas entering. The water pump 10 is fixedly connected to the upper end of the cover plate 2, and is used to circulate water to the cooling box 8 to maintain the continuous water supply and suitable absorption efficiency required for the absorption process. The water storage tank 6 is fixedly connected to the side end of the box body 1, stores water for use in the absorption process, and is connected to the cooling box 8 through the vertical pipe 7 to ensure that the water can flow smoothly. The cooling box 8 is connected to the water storage tank 6 through the vertical pipe 7 to maintain the appropriate temperature of the absorption liquid and improve the absorption efficiency of phosphorus trichloride. The water pipe 11 and the water diversion pipe 12 are respectively connected to the water pump 10, the cover plate 2 and the cooling box 8 to form a closed water circulation system to ensure the required water volume and water temperature in the tail gas treatment process.

[0026] Specifically in this embodiment, the housing 1 is a rectangular structure made of corrosion-resistant material to adapt to the corrosiveness of phosphorus trichloride. The cover plate 2 is connected to the housing 1 through a bearing-type rotating shaft, so that the cover plate 2 can be easily rotated to open and close. The water pump 10 is selected as a model with high efficiency and energy saving characteristics to reduce the operating cost of the entire device. The water storage tank 6 is designed with a large enough capacity to cope with the needs of long-term operation. A cooling system, such as an air cooling or water cooling system, is provided inside the cooling box 8 to maintain a constant temperature of the absorption liquid.

[0027] See also Figures 1 to 4As shown, a cooling pipe 15 is fixedly connected in the cooling box 8, and a filter absorber 16 is arranged at the lower end of the cooling pipe 15, and a check valve 18 is fixedly connected to the lower end of the filter absorber 16. The cooling box 8 is used to maintain the appropriate temperature of the absorption liquid and improve the absorption efficiency of phosphorus trichloride. The cooling pipe 15 is fixedly connected in the cooling box 8 and is used to circulate the absorption liquid to maintain its constant temperature. The filter absorber 16 is arranged at the lower end of the cooling pipe 15 and is used to further purify the phosphorus trichloride in the tail gas and improve the absorption efficiency. The check valve 18 is fixedly connected to the lower end of the filter absorber 16 to prevent backflow and ensure that the tail gas can only pass through the filter absorber 16 in one direction. In this embodiment, the cooling box 8 is a built-in structure, connected to the box body 1, and cooled by an external power supply or a cooling system. The cooling pipe 15 is designed with multiple branches to increase the cooling area and improve the cooling efficiency. The filter absorber 16 adopts a high-efficiency adsorption material, such as activated carbon or a specific catalyst, to improve the adsorption capacity of phosphorus trichloride. The one-way valve 18 is made of corrosion-resistant and high-pressure-resistant materials to ensure long-term stable operation.

[0028] See also Figures 1 to 4 As shown, the side end of the vertical pipe 7 is fixedly connected with an air guide pipe 17, the side end of the cooling box 8 is fixedly connected with an air intake pipe 9, the air intake pipe 9 is fixedly connected with an anti-corrosion inner sleeve 14, and the circumferential surface of the anti-corrosion inner sleeve 14 is sleeved with a blocking block 13. In this embodiment, the vertical pipe 7 is fixedly connected to the side end of the water storage tank 6 to guide the flow of the absorption liquid, and is connected to the air guide pipe 17 to facilitate the introduction of the exhaust gas. The air guide pipe 17 is fixedly connected to the side end of the vertical pipe 7 to guide the exhaust gas into the absorption device to ensure that the exhaust gas can enter and be processed smoothly. The cooling box 8 is fixedly connected to the side end of the box body 1 to cool the absorption liquid and improve the absorption efficiency. The air intake pipe 9 is fixedly connected to the side end of the cooling box 8 to guide the exhaust gas into the cooling box 8, and an anti-corrosion inner sleeve 14 is arranged inside the air intake pipe 9. The anti-corrosion inner sleeve 14 is sleeved in the air intake pipe 9 to prevent the corrosive substances in the exhaust gas from corroding the air intake pipe 9 and extend the service life of the device. The blocking block 13 is fixed to the circumferential surface of the anti-corrosion inner sleeve 14 to further prevent the absorption liquid from leaking and ensure the safe operation of the device. The air guide pipe 17 is made of stainless steel, has good corrosion resistance and strength, and can withstand corrosive substances in the exhaust gas. A cooling medium, such as cooling water or an air cooling system, is provided inside the cooling box 8 to maintain a constant temperature of the absorption liquid. The design of the intake pipe 9 and the anti-corrosion inner sleeve 14 takes into account the exhaust gas flow and pressure requirements to ensure that the exhaust gas can be effectively sucked into the device. The blocking block 13 can be rubber or other sealing materials, which is used to form a seal between the intake pipe 9 and the anti-corrosion inner sleeve 14 to prevent the absorption liquid from leaking.

[0029] See also Figure 2As shown, an observation window 4 is fixedly connected to one side end of the box body 1, and a handle 19 is fixedly connected to the other side end of the box body 1. The observation window 4 is fixedly connected to one side end of the box body 1, which is convenient for the operator to observe the working status inside the device, such as the flow of the absorption liquid, the treatment effect of the exhaust gas, etc. The handle 19 is fixedly connected to the other side end of the box body 1, which is convenient for the operator to perform operations such as switching and maintenance on the device, thereby improving the convenience and safety of operation. The observation window 4 is made of a transparent material, such as glass or special plastic, to ensure that the operator can clearly observe the situation inside the device. Lighting equipment is provided around the observation window 4 for observation in low light conditions. The handle 19 is designed to be ergonomically shaped for easy grip and operation by the operator. A control device, such as a switch or button, is provided near the handle 19, so that the operator can remotely control the start, stop, cleaning and other functions of the device.

[0030] See also Figure 1 and Figure 2 As shown, the lower end of the box 1 is fixedly connected to a bottom plate 3, and the lower end of the bottom plate 3 is fixedly connected to a universal wheel 5. The bottom plate 3 is fixedly connected to the lower end of the box 1, serving as the foundation of the device and providing support between the device and the ground. The universal wheel 5 is fixedly connected to the lower end of the bottom plate 3, so that the device can be flexibly moved on different ground surfaces, improving the convenience of carrying the device. The height of the box 1 is 50 cm. As the main structure of the device, the height of the box 1 is designed to be 50 cm. This height is convenient for movement and transportation, and is suitable for operators to perform daily maintenance and monitoring.

[0031] The working principle and use process of the utility model are as follows: first, the cover plate 2 is rotatably connected to the upper end of the box body 1 through the rotating shaft, and the water pump 10 is fixedly connected to the upper end of the cover plate 2. The water storage tank 6 is fixedly connected to the side end of the box body 1, and the upper end of the vertical pipe 7 is fixedly connected to the upper end of the water storage tank 6. The upper end of the cooling box 8 is fixedly connected to the upper end of the vertical pipe 7. The water pipe 11 connects the water pump 10 to the cover plate 2. The water guide pipe 12 is connected to the upper end of the cooling box 8. The cooling pipe 15 is fixedly connected in the cooling box 8. The filter absorber 16 is arranged at the lower end of the cooling pipe 15, and the lower end of the filter absorber 16 is fixedly connected to the one-way valve 18. The air guide pipe 17 is fixedly connected to the side end of the vertical pipe 7. The air intake pipe 9 is fixedly connected to the side end of the cooling box 8. The anti-corrosion inner sleeve 14 is fixedly connected in the air intake pipe 9, and the blocking block 13 is sleeved on the circumferential surface of the anti-corrosion inner sleeve 14. Open the observation window 4 to observe the internal operation of the device. Use the handle 19 to start and stop the device. If you need to move the device, press the universal wheel 5 under the bottom plate 3 and push the device to the target location. When not in use, store the device in a safe place.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A phosphorus trichloride tail gas absorption device, comprising a housing (1) and a cover plate (2), wherein the cover plate (2) is rotatably connected to the upper end of the housing (1) via a rotating shaft, and is characterized in that: The upper end of the cover plate (2) is fixedly connected to a water pump (10), the side end of the box body (1) is fixedly connected to a water storage tank (6), the upper end of the water storage tank (6) is fixedly connected to a vertical pipe (7), the upper end of the vertical pipe (7) is fixedly connected to a cooling box (8), a water pipe (11) is connected between the water pump (10) and the cover plate (2), and a water diversion pipe (12) is connected between the water pipe (11) and the cooling box (8).

2. The phosphorus trichloride tail gas absorption device according to claim 1, characterized in that: A cooling pipe (15) is fixedly connected inside the cooling box (8), a filter absorber (16) is provided at the lower end of the cooling pipe (15), and a one-way valve (18) is fixedly connected to the lower end of the filter absorber (16).

3. The phosphorus trichloride tail gas absorption device according to claim 1, characterized in that: The side end of the vertical pipe (7) is fixedly connected to an air guide pipe (17), and the side end of the cooling box (8) is fixedly connected to an air intake pipe (9).

4. The phosphorus trichloride tail gas absorption device according to claim 3, characterized in that: An anti-corrosion inner sleeve (14) is fixedly connected inside the air intake pipe (9), and a blocking block (13) is sleeved and connected on the circumferential surface of the anti-corrosion inner sleeve (14).

5. The phosphorus trichloride tail gas absorption device according to claim 1, characterized in that: An observation window (4) is fixedly connected to one side end of the box body (1), and a handle (19) is fixedly connected to the other side end of the box body (1).

6. The phosphorus trichloride tail gas absorption device according to claim 1, characterized in that: The lower end of the box body (1) is fixedly connected to a bottom plate (3), and the lower end of the bottom plate (3) is fixedly connected to a universal wheel (5).

7. The phosphorus trichloride tail gas absorption device according to claim 1, characterized in that: The height of the box (1) is 50 cm.

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