Tail gas purification device for preparing methyltrimethoxysilane

Abstract

The tail gas purification device comprises a base, the upper surface of the base is fixedly connected with a box body, the side surface of the box body is fixedly connected with a motor, the output end of the motor is fixedly connected with a fixing shaft, the outer portion of the fixing shaft is fixedly connected with a flow guide plate, and the flow guide plate is fixedly connected with a tail gas outlet of the box body. A weak base ion exchange resin filtering layer is fixedly connected to the interior of the box body, a refrigerating machine is fixedly connected to the exterior of the box body, and the output end of the refrigerating machine is fixedly communicated with a cooling pipe. Through the structure, the refrigerating machine discharges cold air through the outlet of the cold pipe, so that the tail gas is cooled, hydrogen chloride gas in the tail gas is liquefied and drips, and the direction and speed of airflow are changed through the bending structure of the guide plate, so that the gas is effectively disturbed and dispersed; the gas can pass through the weak base ion exchange resin filter layer more uniformly, so that harmful substances in the gas are removed.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas purification devices, and in particular to an exhaust gas purification device for the preparation of methyltrimethoxysilane. Background Technology

[0002] Methyltrimethoxysilane is mainly used as a crosslinking agent for room temperature vulcanizing silicone rubber, a hydrophobic treatment agent for glass fiber surfaces, and a treatment agent for reinforced plastic laminates. However, the hydrogen chloride tail gas generated during the production of methyltrimethoxysilane requires purification treatment to avoid pollution of the surrounding environment during gas emission. For example, a Chinese patent discloses a tail gas purification device for the preparation of methyltrimethoxysilane, with application number CN202420471934.2. The device positions the purifier by inserting a rod into the aligned first and second slots, which allows for quick movement and use of the purification equipment and improves the purification effect. However, the purification of the gas is not thorough enough, and there will be harmful gases that have not been removed. Furthermore, the removed gases cannot be recycled. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a tail gas purification device for the preparation of methyltrimethoxysilane. The refrigerator discharges cold air through the outlet of the cold pipe, thereby cooling the tail gas, causing the hydrogen chloride gas in the tail gas to liquefy and drip down. The direction and speed of the airflow are changed by the bending structure of the guide plate, thereby effectively disturbing and dispersing the gas, so that the gas can pass through the weak base ion exchange resin filter layer more evenly, thereby removing harmful substances in the gas.

[0004] This utility model also provides a tail gas purification device for the preparation of methyltrimethoxysilane, comprising: a base, a housing and a gas delivery pump are fixedly connected to the upper surface of the base, a connecting pipe is fixedly connected to the input end of the gas delivery pump, the output end of the gas delivery pump is fixedly connected to the housing, an electric motor is fixedly connected to the side surface of the housing, a fixed shaft is fixedly connected to the output end of the electric motor, a guide plate is fixedly connected to the outside of the fixed shaft, a weak base ion exchange resin filter layer is fixedly connected to the inside of the housing, a refrigerator is fixedly connected to the outside of the housing, a cold pipe is fixedly connected to the output end of the refrigerator, and multiple air outlets are provided on the outside of the cold pipe; a water pump, the bottom of the water pump is fixedly connected to the base, a water tank is fixedly connected to the upper surface of the base, the output end of the water pump is fixedly connected to the water tank, a delivery pipe is fixedly connected to the output end of the water pump, a first branch pipe and a second branch pipe are fixedly connected to the end of the delivery pipe away from the water pump, and multiple nozzles are provided on the outside of the first branch pipe and the second branch pipe. Through the above components, the refrigeration unit discharges cold air through the outlet of the cold pipe, thereby cooling the exhaust gas and causing the hydrogen chloride gas in the exhaust gas to liquefy and drip down. The direction and speed of the airflow are changed by the bending structure of the guide plate, thereby effectively disturbing and dispersing the gas, allowing the gas to pass more evenly through the weak base ion exchange resin filter layer, thereby removing harmful substances from the gas.

[0005] According to the present invention, a tail gas purification device for the preparation of methyltrimethoxysilane includes a first filling layer and a second filling layer inside the housing, both filled with ceramic corrugated packing. These components promote the convective absorption of hydrogen chloride gas and water. The first and second filling layers provide a larger contact area, facilitating more thorough contact between hydrogen chloride gas and water, thereby promoting the convective absorption process.

[0006] According to the present invention, a tail gas purification device for the preparation of methyltrimethoxysilane is provided, wherein the nozzle of the first diversion pipe is located above the first filling layer, the nozzle of the second diversion pipe is located to the side of the guide plate, and the nozzle of the second diversion pipe is arranged in an inclined direction. These components ensure that water is sprayed evenly onto the first filling layer, and the inclined nozzle allows water to be sprayed at a more suitable angle and speed to clean the gas on the guide plate, with the remaining water falling into the second filling layer.

[0007] According to the present invention, a tail gas purification device for the preparation of methyltrimethoxysilane is provided, wherein the end of the cold pipe furthest from the refrigeration unit is fixedly connected to the inner wall of the housing, and the outlet of the cold pipe faces the radial direction of the guide plate. Through these components, the gas outside the guide plate is appropriately cooled, while the internal temperature of the housing is regulated.

[0008] According to the present invention, a tail gas purification device for the preparation of methyltrimethoxysilane includes two symmetrically distributed weak base ion exchange resin filter layers, which are located on opposite sides of a guide plate. Through these components, the weak base ion exchange resin filter layers can absorb specific harmful substances in the tail gas.

[0009] According to the present invention, a tail gas purification device for the preparation of methyltrimethoxysilane is provided, wherein the end of the fixed shaft away from the motor is rotatably connected to the inner wall of the housing, and the guide plate has a bent structure. Through these components, the housing provides rotational support for the rotation of the fixed shaft, and the guide plate disperses the gas.

[0010] According to the present invention, a tail gas purification device for the preparation of methyltrimethoxysilane includes an exhaust channel at the top of the housing, a collection trough on the bottom wall of the housing, and a valve at the bottom outlet of the housing. These components allow gas to be discharged through the exhaust channel, and the valve ensures that no substances inside the housing will leak accidentally when no discharge is required.

[0011] According to the present invention, a tail gas purification device for the preparation of methyltrimethoxysilane includes a valve body outlet fixedly connected to a storage tank via a recovery pipe, the storage tank being fixedly connected to a base. By opening the valve body using these components, hydrochloric acid can flow through the recovery pipe into the storage tank for collection.

[0012] Beneficial effects: Compared with the prior art, this novel tail gas purification device for the preparation of methyltrimethoxysilane uses a refrigeration unit to discharge cold air through the outlet of a cold pipe, thereby cooling the tail gas and causing the hydrogen chloride gas in the tail gas to liquefy and drip. The direction and speed of the airflow are changed by the bending structure of the guide plate, thereby effectively disturbing and dispersing the gas, allowing the gas to pass more evenly through the weak base ion exchange resin filter layer, thereby removing harmful substances from the gas. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a complete structural diagram of the tail gas purification device for the preparation of methyltrimethoxysilane according to this utility model;

[0015] Figure 2 This is a side view of the tail gas purification device for the preparation of methyltrimethoxysilane according to this utility model;

[0016] Figure 3 This is a cross-sectional view of the tail gas purification device for the preparation of methyltrimethoxysilane according to this utility model;

[0017] Figure 4 This is a structural diagram of the adjustment and cooling mechanism of the tail gas purification device for the preparation of methyltrimethoxysilane according to this utility model.

[0018] Figure 5 This is a structural diagram of the spray mechanism of the tail gas purification device for the preparation of methyltrimethoxysilane according to this utility model.

[0019] Legend:

[0020] 1. Base; 2. Housing; 3. Gas delivery pump; 4. Connecting pipe; 5. Motor; 6. Fixed shaft; 7. Guide plate; 8. Weak base ion exchange resin filter layer; 9. Water pump; 10. Water tank; 11. Delivery pipe; 12. First branch pipe; 13. Second branch pipe; 14. Refrigeration unit; 15. Cooling pipe; 16. Gas outlet; 17. First filling layer; 18. Second filling layer; 19. Nozzle; 20. Exhaust channel; 21. Collection tank; 22. Valve body; 23. Recovery pipe; 24. Storage box. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-5 This utility model discloses a tail gas purification device for the preparation of methyltrimethoxysilane, comprising: a base 1, a housing 2 and a gas delivery pump 3 fixedly connected to the upper surface of the base 1, a connecting pipe 4 fixedly connected to the input end of the gas delivery pump 3 for conveying tail gas, and an output end of the gas delivery pump 3 fixedly connected to the housing 2 to send the tail gas into the housing 2 for treatment through the connecting pipe 4. A motor 5 is fixedly connected to the side surface of the housing 2, a fixed shaft 6 is fixedly connected to the output end of the motor 5, and the end of the fixed shaft 6 away from the motor 5 is rotatably connected to the inner wall of the housing 2. A guide plate 7 has a bent structure, which drives the guide plate 7 to rotate. A guide plate is fixedly connected to the outside of the fixed shaft 6. 7. The gas is disturbed and dispersed, allowing it to pass more evenly through the weak alkali ion exchange resin filter layer 8. The weak alkali ion exchange resin filter layer 8 is fixedly connected inside the housing 2 to remove harmful substances from the exhaust gas. The refrigerator 14 is fixedly connected to the outside of the housing 2 to generate cold air. The output end of the refrigerator 14 is fixedly connected to the cold pipe 15. The other end of the cold pipe 15 away from the refrigerator 14 is fixedly connected to the inner wall of the housing 2. The outlet 16 of the cold pipe 15 faces the radial direction of the guide plate 7. Multiple outlets 16 are provided on the outside of the cold pipe 15 to deliver cold air into the housing 2, thereby lowering the temperature inside the housing 2 and reducing the temperature generated by hydrogen chloride gas dissolving in water.

[0023] The water pump 9 is fixedly connected to the base 1 at its bottom. A water tank 10 is fixedly connected to the upper surface of the base 1. The output end of the water pump 9 is fixedly connected to the water tank 10. A delivery pipe 11 is fixedly connected to the output end of the water pump 9. The water pump 9 transports water from the water tank 10 through the delivery pipe 11. The end of the delivery pipe 11 away from the water pump 9 is fixedly connected to a first branch pipe 12 and a second branch pipe 13. Multiple nozzles 19 are provided on the outside of the first branch pipe 12 and the second branch pipe 13 to dissolve hydrogen chloride gas in the exhaust gas.

[0024] The interior of the housing 2 is provided with a first filling layer 17 and a second filling layer 18. Both the first filling layer 17 and the second filling layer 18 are filled with ceramic corrugated packing. The corrugated structure and large specific surface area of ​​the ceramic corrugated packing can significantly increase the gas-liquid contact area and promote the convection absorption process. The nozzle 19 of the first diversion pipe 12 is located above the first filling layer 17, and the nozzle 19 of the second diversion pipe 13 is located on the side of the guide plate 7, and the nozzle 19 of the second diversion pipe 13 is arranged in an inclined direction.

[0025] There are two weak base ion exchange resin filter layers 8, which are symmetrically distributed. The two weak base ion exchange resin filter layers 8 are located on both sides of the guide plate 7. An exhaust channel 20 is provided on the top of the box 2 to discharge the treated gas from the box 2. A collection tank 21 is provided on the bottom wall of the box 2 to collect hydrochloric acid. The collection tank 21 is made of corrosion-resistant material. A valve body 22 is provided at the bottom outlet of the box 2 to regulate the flow rate of the liquid. The outlet of the valve body 22 is fixedly connected to a storage tank 24 through a recovery pipe 23, which is a container for storing liquid. The outside of the storage tank 24 is fixedly connected to the base 1.

[0026] Working principle: First, connect the connecting pipe 4 to the preparation device. Then, start the gas delivery pump 3 to allow the exhaust gas to enter the interior of the box 2. Next, start the water pump 9 to send water from the water tank 10 through the delivery pipe 11 into the first diversion pipe 12 and the second diversion pipe 13. Then, spray water onto the exhaust gas through the nozzle 19 of the first diversion pipe 12. The hydrogen chloride gas in the exhaust gas dissolves in the water and passes through the ceramic corrugated packing in the first filling layer 17, promoting the convection absorption of hydrogen chloride gas and water. The remaining hydrogen chloride gas in the exhaust gas will dissolve when it passes through the second filling layer 18, and the water sprayed by the nozzle 19 of the second diversion pipe 13 will dissolve it. The exhaust gas without hydrogen chloride gas reaches the top. At the same time, start the motor 5 to drive the fixed shaft 6 to rotate the guide plate 7, thereby changing the direction and speed of the airflow, effectively disturbing and dispersing the gas. The gas flows to both sides and passes through the weak base ion exchange resin filter layer 8, thereby absorbing the harmful substances in the exhaust gas. The clean gas is discharged from the exhaust channel 20.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A tail gas purification device for the preparation of methyltrimethoxysilane, characterized in that, include: A base (1) is fixedly connected to a housing (2) and a gas delivery pump (3) on its upper surface. A connecting pipe (4) is fixedly connected to the input end of the gas delivery pump (3). The output end of the gas delivery pump (3) is fixedly connected to the housing (2). A motor (5) is fixedly connected to the side surface of the housing (2). A fixed shaft (6) is fixedly connected to the output end of the motor (5). A guide plate (7) is fixedly connected to the outside of the fixed shaft (6). A weak base ion exchange resin filter layer (8) is fixedly connected inside the housing (2). A refrigerator (14) is fixedly connected to the outside of the housing (2). A cold pipe (15) is fixedly connected to the output end of the refrigerator (14). Multiple air outlets (16) are provided on the outside of the cold pipe (15). A water pump (9) is fixedly connected to a base (1) at its bottom. A water tank (10) is fixedly connected to the upper surface of the base (1). The output end of the water pump (9) is fixedly connected to the water tank (10). A delivery pipe (11) is fixedly connected to the output end of the water pump (9). A first branch pipe (12) and a second branch pipe (13) are fixedly connected to the end of the delivery pipe (11) away from the water pump (9). Multiple nozzles (19) are provided on the outside of the first branch pipe (12) and the second branch pipe (13).

2. The tail gas purification device for the preparation of methyltrimethoxysilane according to claim 1, characterized in that, The box (2) is provided with a first filling layer (17) and a second filling layer (18), and both the first filling layer (17) and the second filling layer (18) are filled with ceramic corrugated filler.

3. The tail gas purification device for the preparation of methyltrimethoxysilane according to claim 1, characterized in that, The nozzle (19) of the first diversion pipe (12) is located above the first filling layer (17), the nozzle (19) of the second diversion pipe (13) is located on the side of the guide plate (7), and the nozzle (19) of the second diversion pipe (13) is arranged in an inclined direction.

4. The tail gas purification device for the preparation of methyltrimethoxysilane according to claim 1, characterized in that, The other end of the cold pipe (15) away from the refrigeration unit (14) is fixedly connected to the inner wall of the housing (2), and the air outlet (16) of the cold pipe (15) is directly opposite the radial direction of the guide plate (7).

5. The tail gas purification device for the preparation of methyltrimethoxysilane according to claim 1, characterized in that, There are two weak base ion exchange resin filter layers (8) that are symmetrically distributed, and the two weak base ion exchange resin filter layers (8) are located on both sides of the guide plate (7).

6. The tail gas purification device for the preparation of methyltrimethoxysilane according to claim 1, characterized in that, The fixed shaft (6) is rotatably connected to the inner wall of the housing (2) at one end away from the motor (5), and the guide plate (7) is a bent structure.

7. The tail gas purification device for the preparation of methyltrimethoxysilane according to claim 1, characterized in that, The top of the box (2) is provided with an exhaust channel (20), the bottom wall of the box (2) is provided with a collection groove (21), and the bottom outlet of the box (2) is provided with a valve body (22).

8. The tail gas purification device for the preparation of methyltrimethoxysilane according to claim 7, characterized in that, The outlet of the valve body (22) is fixedly connected to the storage tank (24) through the recovery pipe (23), and the outside of the storage tank (24) is fixedly connected to the base (1).

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