A phosphorus trichloride tail gas absorption device

Abstract

This utility model discloses a phosphorus trichloride tail gas absorption device, belonging to the technical field of phosphorus trichloride tail gas absorption devices. Key technical features include a support frame, with a cooling component fixedly connected to the top of the support frame. A spray device body is bolted inside the cooling component. A drying component is connected to the right side of the cooling component, and a purification component is connected to the right side of the drying component. The cooling component includes a tank, with an air inlet pipe connected to the inner wall of the tank. A first solenoid valve is connected to the top of the air inlet pipe, and a protective cover is fixedly connected to the top of the first solenoid valve. This invention addresses the problem that most existing phosphorus trichloride tail gas absorption devices initially pre-treat phosphorus trichloride tail gas through spraying. However, some phosphorus trichloride tail gas has a certain temperature, which may cause steam to be generated during the spraying process. This steam may affect the operation of subsequent structures.

Description

Technical Field

[0001] This utility model relates to the technical field of phosphorus trichloride tail gas absorption devices, and in particular to a phosphorus trichloride tail gas absorption device. Background Technology

[0002] The phosphorus trichloride tail gas absorption device is a core piece of equipment used in chemical production to treat the toxic and harmful tail gas generated during the synthesis of phosphorus trichloride. Its main function is to remove pollutants from the tail gas through physical and chemical processes, achieve purification and emission standards, and at the same time recover valuable substances and ensure production safety.

[0003] To address the aforementioned issues, existing patents offer solutions. Most existing phosphorus trichloride tail gas absorption devices initially pre-treat the phosphorus trichloride tail gas through spraying. However, some phosphorus trichloride tail gas has a certain temperature, which may cause steam to be generated during the spraying process. The generated steam may affect the operation of other subsequent structures.

[0004] Therefore, a phosphorus trichloride tail gas absorption device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a phosphorus trichloride tail gas absorption device, which can solve the problem that most existing phosphorus trichloride tail gas absorption devices initially pre-treat phosphorus trichloride tail gas by spraying. However, some phosphorus trichloride tail gas has a certain temperature, which may cause steam to be generated during the spraying process. The generated steam may affect the operation of other subsequent structures.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a phosphorus trichloride tail gas absorption device, comprising a support frame, a cooling component fixedly connected to the top of the support frame, a spray device body bolted inside the cooling component, a drying component connected to the right side of the cooling component, and a purification component connected to the right side of the drying component.

[0007] The cooling assembly includes a tank, an air inlet pipe connected to the inner wall of the tank, a first solenoid valve connected to the top of the air inlet pipe, a protective cover fixedly connected to the top of the first solenoid valve, a second solenoid valve connected to the bottom of the tank, a hollow cover connected to the top of the tank, a connecting pipe connected to the top of the hollow cover, and a vacuum pump connected to the bottom of the connecting pipe.

[0008] Preferably, the purification component includes a housing, a pull-out hole is provided on the right side of the housing, a filter plate is snapped into the inner wall of the pull-out hole, and a third solenoid valve is connected to the top of the housing.

[0009] Preferably, a frame is snapped onto the surface of the third solenoid valve, and a filter screen is fixedly connected inside the frame.

[0010] Preferably, a sealing groove is provided on the right side of the pull-out hole, and a sealing block that cooperates with the sealing groove is fixedly connected to the right side of the filter plate, and an adjustment handle is fixedly connected to the right side of the sealing block.

[0011] Preferably, the drying assembly includes a box body, a top plate is snapped onto the top of the box body, and a sealing plate is fixedly connected to the bottom of the top plate.

[0012] Preferably, the top of the box body is provided with a splicing groove, and the bottom of the top plate is fixedly connected with a splicing block that cooperates with the splicing groove.

[0013] Preferably, a corrugated plate body is fixedly connected to the inner wall of the tank, and the corrugated plate body is made of stainless steel.

[0014] Preferably, the bottom of the support frame is fixedly connected to an anti-slip block, and the anti-slip block is made of silicone.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The cooling component at the top of the support frame, along with the tank, coolant, and stainless steel corrugated plate, can effectively reduce the temperature of the high-temperature exhaust gas, preventing steam generated during spraying from affecting the operation of subsequent drying and purification components. At the same time, the second solenoid valve at the bottom of the tank can discharge condensate and impurities in a timely manner, preventing liquid accumulation from affecting cooling efficiency.

[0017] 2. The cooling component is equipped with a vacuum pump that creates a negative pressure environment through connecting pipes and a hollow cover, forcibly drawing exhaust gas through each component to ensure smooth airflow. The drying component is filled with desiccant. Combined with the snap-fit ​​structure of the top plate and sealing plate, as well as the splicing groove and splicing block design, the desiccant can be easily disassembled and replaced to absorb moisture in the exhaust gas, preventing humid gas from corroding the pipes and affecting the purification effect. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the phosphorus trichloride tail gas absorption device of this utility model;

[0019] Figure 2 This is a schematic diagram of the cooling component of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the purification component of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the drying component of this utility model;

[0022] Figure 5 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0023] In the diagram, 1. Support frame; 2. Cooling assembly; 201. Tank body; 202. Air inlet pipe; 203. First solenoid valve; 204. Protective cover; 205. Second solenoid valve; 206. Hollow cover; 207. Connecting pipe; 208. Air pump; 3. Spray device body; 4. Drying assembly; 401. Box body; 402. Top plate; 403. Sealing plate; 404. Splicing groove; 405. Splicing block; 5. Purification assembly; 501. Box shell; 502. Pull-out hole; 503. Filter plate; 504. Third solenoid valve; 505. Frame; 506. Filter screen; 507. Sealing groove; 508. Sealing block; 509. Adjustment handle; 6. Corrugated plate body; 7. Anti-slip block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A phosphorus trichloride tail gas absorption device includes a support frame 1, a cooling component 2 fixedly connected to the top of the support frame 1, a spray device body 3 bolted inside the cooling component 2, a drying component 4 connected to the right side of the cooling component 2, and a purification component 5 connected to the right side of the drying component 4.

[0027] The cooling assembly 2 includes a tank 201, an air inlet pipe 202 connected to the inner wall of the tank 201, a first solenoid valve 203 connected to the top of the air inlet pipe 202, a protective cover 204 fixedly connected to the top of the first solenoid valve 203, a second solenoid valve 205 connected to the bottom of the tank 201, a hollow cover 206 connected to the top of the tank 201, a connecting pipe 207 connected to the top of the hollow cover 206, and a vacuum pump 208 connected to the bottom of the connecting pipe 207.

[0028] In this embodiment: A support frame 1 supports the cooling component 2, which in turn cools the phosphorus trichloride tail gas absorption device. A spray device body 3 treats the phosphorus trichloride tail gas. A drying component 4 stores the desiccant, which dries the treated gas. A purification component 5 filters and removes the gas. The tank 201, inlet pipe 202, and first solenoid valve 203 are included. The tank 201 serves as the cooling body, and coolant can be introduced into it. The used spray liquid is stored and pre-cooled to reduce the temperature of the high-temperature exhaust gas, preventing steam generated during spraying from affecting the operation of the subsequent drying and purification components 5. By setting a second solenoid valve 205, a hollow cover 206, a connecting pipe 207, and a vacuum pump 208, the second solenoid valve 205 is used to discharge condensate at the bottom of the tank 201, such as moisture or impurities in the exhaust gas, to prevent liquid accumulation from affecting cooling efficiency. The hollow cover 206, in conjunction with the connecting pipe 207 and the vacuum pump 208, forms a negative pressure environment, forcibly drawing the exhaust gas through the cooling components 2 and subsequent treatment processes, ensuring smooth airflow.

[0029] Specifically, such as Figure 3 As shown, the purification component 5 includes a housing 501, a pull-out hole 502 is provided on the right side of the housing 501, a filter plate 503 is snapped into the inner wall of the pull-out hole 502, and a third solenoid valve 504 is connected to the top of the housing 501.

[0030] Specifically, such as Figure 3 As shown, a frame 505 is snapped onto the surface of the third solenoid valve 504, and a filter screen 506 is fixedly connected inside the frame 505.

[0031] Specifically, such as Figure 3 As shown, a sealing groove 507 is provided on the right side of the pull hole 502, and a sealing block 508 that works with the sealing groove 507 is fixedly connected to the right side of the filter plate 503. An adjustment handle 509 is fixedly connected to the right side of the sealing block 508.

[0032] In this embodiment: By setting up a housing 501, a pull-out hole 502, and a filter plate 503, a purification space is formed inside the housing 501. The filter plate 503 can be filled with adsorbent materials such as activated carbon and quicklime to remove residual pollutants in the exhaust gas through physical adsorption or chemical reaction. The pull-out hole 502 is designed to facilitate the periodic removal of the filter plate 503 to replace the adsorbent material, making maintenance convenient and not affecting the overall operation of the equipment. By setting up a third solenoid valve 504, a frame 505, and a filter screen 506, the third solenoid valve 504 controls the emission or circulation of the purified exhaust gas. The filter screen 506 in the frame 505 can intercept solid particles to prevent adsorbent material debris from entering the atmosphere and improve purification accuracy. By setting up a sealing groove 507, a sealing block 508, and an adjusting handle 509, the sealing block 508 is embedded in the sealing groove 507 and works with a silicone sealing ring to ensure the airtightness of the filter plate 503 during installation and prevent exhaust gas bypass leakage. The adjusting handle 509 allows operators to quickly pull out the filter plate 503, improving maintenance efficiency.

[0033] Specifically, such as Figure 4 As shown, the drying assembly 4 includes a housing 401, a top plate 402 is snapped onto the top of the housing 401, and a sealing plate 403 is fixedly connected to the bottom of the top plate 402.

[0034] Specifically, such as Figure 4 As shown, the top of the box 401 is provided with a splicing groove 404, and the bottom of the top plate 402 is fixedly connected with a splicing block 405 that works in conjunction with the splicing groove 404.

[0035] In this embodiment: by setting up a housing 401, a top plate 402, and a sealing plate 403, the housing 401 is filled with a desiccant, such as anhydrous calcium chloride or molecular sieve, to absorb moisture in the cooled exhaust gas and prevent humid gas from corroding subsequent pipes or affecting the purification effect; the top plate 402 and the sealing plate 403 are snapped together to form an independent drying chamber, which facilitates the disassembly and replacement of the desiccant and prevents the desiccant from scattering. By setting up a splicing groove 404 and a splicing block 405, the top plate 402 is embedded into the splicing groove 404 of the housing 401 through the splicing block 405, realizing quick disassembly and sealing fixation, which is more time-saving and labor-saving than bolt connection and is suitable for frequent maintenance scenarios.

[0036] Specifically, such as Figure 5 As shown, a corrugated plate body 6 is fixedly connected to the inner wall of the tank 201. The material of the corrugated plate body 6 is stainless steel.

[0037] Specifically, such as Figure 1 As shown, the bottom of the support frame 1 is fixedly connected to an anti-slip block 7, which is made of silicone.

[0038] In this embodiment: by setting the corrugated plate body 6, the corrugated plate increases the inner wall surface area of ​​the tank 201, enhances the heat exchange efficiency between the coolant and the exhaust gas, and shortens the cooling time. The anti-slip block 7 can reduce the positional deviation of the support frame 1.

[0039] Working principle: First, the high-temperature phosphorus trichloride tail gas to be treated enters the tank 201 of the cooling component 2 through the inlet pipe 202. Coolant is introduced into the tank 201, and the stainless steel corrugated plate on the inner wall increases the heat exchange area, reduces the tail gas temperature, and prevents steam generation during subsequent spraying. At the same time, the spraying device body 3 sprays absorbent liquid into the tank 201 to initially absorb pollutants in the tail gas. The condensate and impurities after the reaction are discharged through the second solenoid valve 205 at the bottom of the tank 201. Then, the cooled and initially purified tail gas is transported to the drying component 4 by the suction pump 208 through the connecting pipe 207. The box 401 of the drying component 4 is filled with desiccant, and a sealed cavity is formed by the snap-fit ​​structure between the top plate 402 and the splicing groove 404. The system collects moisture from the exhaust gas to prevent humid gas from affecting subsequent purification processes. The dried exhaust gas enters the housing 501 of the purification component 5. The activated carbon and other adsorption materials filled in the filter plate 503 further remove residual pollutants. The third solenoid valve 504 controls the exhaust gas emission. The filter screen 506 in the frame 505 intercepts solid particles to ensure that the purified gas meets emission standards. The filter plate 503 is sealed by the cooperation of the sealing block 508 and the sealing groove 507. The adjustment handle 509 facilitates the periodic removal and replacement of the adsorption material. Throughout the process, the silicone anti-slip block 7 at the bottom of the support frame 1 ensures the stability of the equipment. The air pump 208 maintains the negative pressure of the system to ensure smooth airflow. The components work together to achieve the cooling, drying, and purification of the high-temperature phosphorus trichloride exhaust gas.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A phosphorus trichloride tail gas absorption apparatus comprising a support frame (1), characterized in that: A cooling component (2) is fixedly connected to the top of the support frame (1), and a spray device body (3) is bolted inside the cooling component (2). A drying component (4) is connected to the right side of the cooling component (2), and a purification component (5) is connected to the right side of the drying component (4). The cooling assembly (2) includes a tank (201), an air inlet pipe (202) connected to the inner wall of the tank (201), a first solenoid valve (203) connected to the top of the air inlet pipe (202), a protective cover (204) fixedly connected to the top of the first solenoid valve (203), a second solenoid valve (205) connected to the bottom of the tank (201), a hollow cover (206) connected to the top of the tank (201), a connecting pipe (207) connected to the top of the hollow cover (206), and a vacuum pump (208) connected to the bottom of the connecting pipe (207).

2. A phosphorus trichloride tail gas absorption apparatus according to claim 1, characterized in that: The purification component (5) includes a housing (501), a pull-out hole (502) is provided on the right side of the housing (501), a filter plate (503) is attached to the inner wall of the pull-out hole (502), and a third solenoid valve (504) is connected to the top of the housing (501).

3. A phosphorus trichloride tail gas absorption apparatus according to claim 2, characterized in that: The surface of the third solenoid valve (504) is snapped with a frame (505), and a filter screen (506) is fixedly connected inside the frame (505).

4. A phosphorus trichloride tail gas absorption apparatus according to claim 2, characterized in that: A sealing groove (507) is provided on the right side of the pull-out hole (502), and a sealing block (508) that cooperates with the sealing groove (507) is fixedly connected to the right side of the filter plate (503). An adjustment handle (509) is fixedly connected to the right side of the sealing block (508).

5. A phosphorus trichloride tail gas absorption apparatus according to claim 1, characterized in that: The drying assembly (4) includes a housing (401), a top plate (402) is snapped onto the top of the housing (401), and a sealing plate (403) is fixedly connected to the bottom of the top plate (402).

6. A phosphorus trichloride tail gas absorption apparatus according to claim 5, characterized in that: The top of the box (401) is provided with a splicing groove (404), and the bottom of the top plate (402) is fixedly connected with a splicing block (405) that works with the splicing groove (404).

7. A phosphorus trichloride tail gas absorption apparatus according to claim 1, characterized in that: The inner wall of the tank (201) is fixedly connected with a corrugated plate body (6), which is made of stainless steel.

8. A phosphorus trichloride tail gas absorption apparatus according to claim 1, characterized in that: The bottom of the support frame (1) is fixedly connected to an anti-slip block (7), which is made of silicone.

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