A device for treating off-gas from silicon carbide production

Abstract

The utility model discloses a silicon carbide production tail gas treatment device, including support leg, the top fixedly connected with support platform of support leg, the outer wall one side of support platform is fixedly connected with the air inlet, and the air inlet extends to the inside of support platform, and the side of air inlet near the spray head is provided with drying device, and drying device includes connecting pipe, pressing plate, water absorption sponge, filter screen and check valve, and the first box body fixedly connected with the one side of support platform inner wall bottom far from the spray head. The utility model relates to the technical field of silicon carbide production tail gas treatment, and this silicon carbide production tail gas treatment device, through the cooperation between connecting pipe, pressing plate, water absorption sponge, filter screen and check valve, realizes when the water in tail gas is absorbed to the water in tail gas by water absorption sponge when carbonized silicon production tail gas as fuel, prevents the temperature reduction when burning of the water in tail gas because of vaporization, realizes when carbonized silicon production tail gas as fuel uses, and tail gas can fully burn and release heat, improves the combustion efficiency of tail gas.

Description

Technical Field

[0001] This utility model relates to the field of silicon carbide production tail gas treatment technology, specifically a silicon carbide production tail gas treatment device. Background Technology

[0002] Silicon carbide products have special properties such as high temperature resistance, wear resistance, thermal shock resistance, chemical corrosion resistance, radiation resistance, and excellent electrical and thermal conductivity. Therefore, they are widely used in various sectors of the national economy. In my country, green silicon carbide is the main material for abrasives.

[0003] Existing silicon carbide production tail gas treatment devices generally cool and remove dust from the tail gas through spraying, and use the cooled and dust-removed tail gas as fuel.

[0004] However, existing silicon carbide production exhaust gas treatment devices, after cooling and dust removal, still contain a large amount of moisture in the exhaust gas. When the exhaust gas is used as fuel, the moisture absorbs the heat generated by combustion, resulting in a reduction in the actual usable effective heat and thus reducing the thermal efficiency of the exhaust gas. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a silicon carbide production tail gas treatment device, which solves the problem that after existing silicon carbide production tail gas treatment devices cool and remove dust from the tail gas, the tail gas contains a large amount of moisture. When the tail gas is used as fuel, the moisture absorbs the heat generated by combustion, resulting in a reduction in the actual usable effective heat and thus reducing the thermal efficiency of the tail gas.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a silicon carbide production tail gas treatment device, comprising a support leg, a support platform fixedly connected to the top of the support leg, a nozzle disposed inside the support platform, an air inlet fixedly connected to one side of the outer wall of the support platform, the air inlet extending into the interior of the support platform, a drying device disposed on the side of the air inlet near the nozzle, the drying device comprising a first housing, a connecting pipe, a pressure plate, a water-absorbing sponge, a filter screen, and a check valve, the first housing fixedly connected to the bottom of the inner wall of the support platform away from the nozzle, the connecting pipe connected to the side of the first housing near the nozzle, a pressure plate disposed at the top inside the first housing, a water-absorbing sponge fixedly connected to the bottom of the pressure plate, a filter screen fixedly connected to the bottom of the water-absorbing sponge, the two sides of the filter screen being fixedly connected to the two sides of the inner wall of the first housing by bolts, and a check valve connected to the side of the first housing away from the connecting pipe.

[0007] Preferably, an extrusion device is provided above the pressure plate. The extrusion device includes an electric push rod, a protective shell, a sealing tube, a humidity sensor, and a controller. The electric push rod is fixedly connected to the top of the support platform on the side away from the nozzle. The output end of the electric push rod extends into the interior of the first housing and is fixedly connected to the pressure plate. A protective shell is provided outside the electric push rod and is fixedly connected to the top of the support platform. A sealing tube connecting the support platform and the first housing is provided below the electric push rod. A humidity sensor is provided below the sealing tube and is fixedly connected to the side of the first housing away from the nozzle. A controller is provided below the humidity sensor and is fixedly connected to the side of the first housing away from the nozzle.

[0008] Preferably, the bottom of the first housing is provided with a drain outlet, which extends through the bottom of the support platform and is connected to a drain valve.

[0009] Preferably, a second housing is fixedly connected to the bottom of the inner wall of the support platform outside the nozzle. The two sides of the second housing are respectively connected to the air inlet and the connecting pipe. A water pump is fixedly connected to the side of the second housing away from the air inlet. The output end of the water pump extends to the outside of the support platform and is connected to a cooling box. The cooling box is fixedly connected to the top of the support platform. A water inlet pipe is connected to the other side of the cooling box. The other end of the water inlet pipe extends to the inside of the support platform and is connected to a water distribution tank. The water distribution tank is fixedly connected to the top of the second housing and is connected to the top of the nozzle.

[0010] Preferably, a cooling plate is installed on the top of the cooling box, and heat sinks are fixedly connected to the bottom of the cooling plate inside the cooling box. A fan is installed on the side of the cooling plate near the protective shell, and the fan is fixedly connected to the top of the support platform. Beneficial effects

[0011] This utility model provides a silicon carbide production tail gas treatment device. It has the following beneficial effects: Through the cooperation of a first housing, connecting pipe, pressure plate, absorbent sponge, filter screen, and check valve, this device enables the tail gas to be used as fuel. The tail gas enters the first housing through the connecting pipe, the absorbent sponge absorbs the moisture in the tail gas, and the dehydrated tail gas exits the first housing through the check valve. This absorbs the moisture in the silicon carbide production tail gas into the absorbent sponge, preventing the moisture in the tail gas from vaporizing and lowering the combustion temperature. This ensures that when the silicon carbide production tail gas is used as fuel, the tail gas can be fully combusted and release heat, improving the combustion efficiency of the tail gas.

[0012] By coordinating the electric push rod, protective shell, sealing tube, humidity sensor, and controller, the system enables the humidity sensor to detect the moisture content in the exhaust gas in the first chamber when there is excessive moisture in the absorbent sponge. If the moisture content exceeds a set value, the controller activates the electric push rod, which in turn drives the pressure plate to squeeze the absorbent sponge, expelling the moisture. This ensures that excess moisture in the absorbent sponge is promptly removed, preventing incomplete absorption of moisture from the exhaust gas and ensuring proper subsequent use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 An exterior schematic diagram;

[0015] Figure 3 for Figure 1 A schematic diagram of the structure of the intermediate pressure plate, absorbent sponge, and filter screen;

[0016] Figure 4 for Figure 1 A schematic diagram of the structure of the cooling plate, heat sink, and fan.

[0017] In the diagram: 1. Support leg; 2. Support platform; 3. Nozzle; 4. Air inlet; 5. First housing; 6. Connecting pipe; 7. Pressure plate; 8. Absorbent sponge; 9. Filter screen; 10. Drain outlet; 11. Drain valve; 12. Check valve; 13. Electric push rod; 14. Protective shell; 15. Sealing pipe; 16. Humidity sensor; 17. Controller; 18. Second housing; 19. Water pump; 20. Cooling tank; 21. Cooling plate; 22. Heat sink; 23. Fan; 24. Water inlet pipe; 25. Water distribution tank. Detailed Implementation

[0018] 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.

[0019] Existing silicon carbide production exhaust gas treatment devices, after cooling and dust removal, still contain a large amount of moisture in the exhaust gas. When the exhaust gas is used as fuel, the moisture absorbs the heat generated by combustion, resulting in a reduction in the actual usable effective heat and thus reducing the thermal efficiency of the exhaust gas.

[0020] In view of this, the present invention provides a silicon carbide production tail gas treatment device. This device, through the cooperation of a first housing, connecting pipe, pressure plate, absorbent sponge, filter screen, and check valve, enables the tail gas to be used as fuel. The tail gas enters the first housing through the connecting pipe, the absorbent sponge absorbs the moisture in the tail gas, and the dehydrated tail gas is discharged from the first housing through the check valve. This absorbs the moisture in the silicon carbide production tail gas into the absorbent sponge, preventing the moisture in the tail gas from vaporizing and lowering the combustion temperature. This ensures that when the silicon carbide production tail gas is used as fuel, the tail gas can be fully combusted and release heat, improving the combustion efficiency of the tail gas.

[0021] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly introduced below.

[0022] Example 1, by Figure 1-4 It is understood that the silicon carbide production tail gas treatment device in this case includes a support leg 1, a support platform 2 fixedly connected to the top of the support leg 1, a nozzle 3 provided inside the support platform 2, an air inlet 4 fixedly connected to one side of the outer wall of the support platform 2, the air inlet 4 extending into the interior of the support platform 2, a drying device provided on the side of the air inlet 4 near the nozzle 3, the drying device includes a first box 5, a connecting pipe 6, a pressure plate 7, a water-absorbing sponge 8, a filter screen 9 and a check valve 12, the first box 5 is fixedly connected to the bottom of the inner wall of the support platform 2 away from the nozzle 3, the connecting pipe 6 is connected to the side of the first box 5 near the nozzle 3, the pressure plate 7 is provided at the top inside the first box 5, the water-absorbing sponge 8 is fixedly connected to the bottom of the pressure plate 7, the filter screen 9 is fixedly connected to the bottom of the water-absorbing sponge 8, the two sides of the filter screen 9 are respectively fixedly connected to the two sides of the inner wall of the first box 5 by bolts, and the check valve 12 is connected to the side of the first box 5 away from the connecting pipe 6.

[0023] In the specific implementation process, it is worth noting that the support leg 1 is made of cast iron or carbon steel to ensure that it can provide stable support for the silicon carbide production exhaust gas treatment device. The support platform 2 is made of carbon steel. The model of the nozzle 3 is not specifically limited, as long as it can spray water in a mist. A cover plate is fixedly connected to one side of the air inlet 4 by bolts, and a sealing strip is fixedly connected between the cover plate and the air inlet 4. When treating the silicon carbide production exhaust gas, the operator first opens the cover plate by turning the bolts and connects the air inlet 4 to the external exhaust gas flue. The absorbent sponge 8 is made of polyurethane resin as the base material with added hydrophilic substrate, and is produced by foaming process. It has the characteristics of being lightweight, highly elastic, waterproof and breathable, and can effectively block water. While blocking moisture, it maintains excellent air permeability, ensuring that the absorbent sponge 8 can efficiently absorb moisture in the exhaust gas. The filter screen 9 is made of lightweight plastic, ensuring that the filter screen 9 has corrosion resistance and oxidation resistance. Through the cooperation between the first box 5, connecting pipe 6, pressure plate 7, absorbent sponge 8, filter screen 9 and check valve 12, the exhaust gas enters the first box 5 through the connecting pipe 6. The absorbent sponge 8 absorbs the moisture in the exhaust gas. The dehydrated exhaust gas is discharged from the first box 5 through the check valve 12. The check valve 12 can prevent the exhaust gas from flowing back. In this way, the moisture in the silicon carbide production exhaust gas can be absorbed into the absorbent sponge 8, which solves the problem that when the exhaust gas is used as fuel, the moisture will absorb the heat generated by combustion, resulting in a reduction in the actual usable effective heat.

[0024] Furthermore, an extrusion device is provided above the pressure plate 7. The extrusion device includes an electric push rod 13, a protective shell 14, a sealing tube 15, a humidity sensor 16, and a controller 17. The electric push rod 13 is fixedly connected to the top of the support platform 2 on the side away from the nozzle 3. The output end of the electric push rod 13 extends into the interior of the first housing 5 and is fixedly connected to the pressure plate 7. The electric push rod 13 is provided with a protective shell 14 fixedly connected to the top of the support platform 2. A sealing tube 15 connecting the support platform 2 and the first housing 5 is provided below the electric push rod 13. A humidity sensor 16 is provided below the sealing tube 15. The humidity sensor 16 is fixedly connected to the side of the first housing 5 away from the nozzle 3. A controller 17 is fixedly connected to the side of the first housing 5 away from the nozzle 3 below the humidity sensor 16.

[0025] In the specific implementation process, it is worth noting that the model of the electric actuator 13 is not specifically limited, as long as it meets the actual usage requirements. The protective shell 14 can prevent external dust and other debris from entering the electric actuator 13 and damaging it. The top of the protective shell 14 has a pipe connector, through which the electric actuator 13 is connected to an external power supply. The outer wall of the protective shell 14 has several heat dissipation holes to provide heat dissipation for the electric actuator 13. The top of the sealing tube 15 is fixedly connected to a sealing ring, which prevents external air from entering the sealing tube 15 through gaps when the electric actuator 13 extends or retracts. The humidity sensor 16 is an AHT type, which has high accuracy and low energy consumption. The humidity sensor 16 has a probe that penetrates through the first housing 5 and extends into the interior of the first housing 5. The controller 17 is an STM type. Through the cooperation between the electric push rod 13, the protective shell 14, the sealing tube 15, the humidity sensor 16 and the controller 17, the humidity sensor 16 detects the moisture content of the silicon carbide production exhaust gas inside the first housing 5. When the moisture content in the exhaust gas is higher than the set value, it transmits a signal to the controller 17. The controller 17 drives the electric push rod 13 to start and drives the pressure plate 7 to compress the water-absorbing sponge 8, squeezing out the water inside the water-absorbing sponge 8. This can squeeze out the water inside the water-absorbing sponge 8 in time, ensuring that the moisture in the exhaust gas does not absorb the heat generated by combustion.

[0026] Furthermore, a drain outlet 10 is provided at the bottom of the first housing 5. The drain outlet 10 penetrates the bottom of the support platform 2 and is connected to a drain valve 11.

[0027] In the specific implementation process, it is worth noting that the top of the drain outlet 10 is rectangular with a large width, and the bottom is a connecting pipe. The drain valve 11 is a YFEH type electromagnetic overflow valve. It is sufficient to ensure that the drain valve 11 meets the actual use requirements. The controller 17 controls the drain valve 11 to open. The water in the absorbent sponge 8 enters the drain outlet 10 through the filter screen 9 and is discharged from the first box 5 through the drain valve 11. After completion, the controller 17 controls the drain valve 11 to close.

[0028] Example 2, by Figure 1-4 It can be seen that the nozzle 3 is provided with a second box 18 fixedly connected to the bottom of the inner wall of the support platform 2. The two sides of the second box 18 are respectively connected to the air inlet 4 and the connecting pipe 6. The side of the second box 18 away from the air inlet 4 is fixedly connected to the water pump 19. The output end of the water pump 19 extends to the outside of the support platform 2 and is connected to the cooling box 20. The cooling box 20 is fixedly connected to the top of the support platform 2. The other side of the cooling box 20 is connected to the water inlet pipe 24. The other end of the water inlet pipe 24 extends to the inside of the support platform 2 and is connected to the water distribution tank 25. The water distribution tank 25 is fixedly connected to the top of the second box 18 and is connected to the top of the nozzle 3.

[0029] In the specific implementation process, it is worth noting that the model of the water pump 19 is not specifically limited, as long as the water pump 19 can transport water. There is a reserved pipe connecting the water distribution tank 25 and the second tank 18. The reserved pipe extends into the interior of the second tank 18, and the bottom of the reserved pipe is connected to the nozzle 3. The input end of the water pump 19 extends into the interior of the second tank 18. Through the cooperation between the second tank 18, the water pump 19, the cooling tank 20, the water inlet pipe 24 and the water distribution tank 25, the water pump 19 transports the water inside the second tank 18 to the interior of the cooling tank 20, and enters the interior of the water distribution tank 25 through the water inlet pipe 24. The water inside the water distribution tank 25 is sprayed into the interior of the second tank 18 in a mist form through the nozzle 3 to spray the silicon carbide production exhaust gas, thereby cooling and removing dust.

[0030] Furthermore, a cooling plate 21 is installed on the top of the cooling box 20, and a heat sink 22 is fixedly connected to the bottom of the cooling plate 21 inside the cooling box 20. A fan 23 is provided on the side of the cooling plate 21 near the protective shell 14, and the fan 23 is fixedly connected to the top of the support platform 2.

[0031] In the specific implementation process, it is worth noting that the cooling plate 21 is composed of a horizontal plate, connecting column and fins. The heat sink 22 can increase the contact area with the water inside the cooling box 20. The model of the fan 23 is not specifically limited, as long as it meets the actual use requirements. In order to improve the cooling efficiency of the cooling plate 21, multiple fans 23 can be set on the front and side of the cooling plate 21. Multiple fans 23 blow on the cooling plate 21 from different directions, which is conducive to the heat transfer effect on the surface of the cooling plate 21. Through the cooperation between the cooling plate 21, the heat sink 22 and the fan 23, the heat sink 22 absorbs the heat in the water and transfers it to the outside of the cooling box 20 through the cooling plate 21. The fan 23 drives the air to flow faster, thereby removing the heat from the surface of the cooling plate 21, thereby achieving the cooling of the water inside the cooling box 20.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silicon carbide production tail gas treatment apparatus comprising support legs (1), characterized in that: The top of the support leg (1) is fixedly connected to a support platform (2), and a nozzle (3) is provided inside the support platform (2). An air inlet (4) is fixedly connected to one side of the outer wall of the support platform (2). The air inlet (4) extends into the interior of the support platform (2), and a drying device is provided on the side of the air inlet (4) near the nozzle (3). The drying device includes a first chamber (5), a connecting pipe (6), a pressure plate (7), an absorbent sponge (8), a filter screen (9), and a check valve (12); The first housing (5) is fixedly connected to the bottom of the inner wall of the support platform (2) away from the nozzle (3). The side of the first housing (5) near the nozzle (3) is connected to a connecting pipe (6). A pressure plate (7) is provided on the upper part of the interior of the first housing (5). A water-absorbing sponge (8) is fixedly connected to the bottom of the pressure plate (7). A filter screen (9) is fixedly connected to the bottom of the water-absorbing sponge (8). The two sides of the filter screen (9) are respectively fixedly connected to the two sides of the inner wall of the first housing (5) by bolts. A check valve (12) is connected to the side of the first housing (5) away from the connecting pipe (6).

2. The apparatus for treating tail gas of silicon carbide production according to claim 1, characterized in that: An extrusion device is provided above the pressure plate (7); The extrusion device includes an electric push rod (13), a protective shell (14), a sealing tube (15), a humidity sensor (16), and a controller (17). The electric push rod (13) is fixedly connected to the top of the support platform (2) on the side away from the nozzle (3). The output end of the electric push rod (13) extends into the interior of the first housing (5) and is fixedly connected to the pressure plate (7). The electric push rod (13) is provided with a protective shell (14) fixedly connected to the top of the support platform (2). A sealing tube (15) connecting the support platform (2) and the first housing (5) is provided below the electric push rod (13). A humidity sensor (16) is provided below the sealing tube (15). The humidity sensor (16) is fixedly connected to the side of the first housing (5) away from the nozzle (3). A controller (17) is fixedly connected to the side of the first housing (5) away from the nozzle (3) below the humidity sensor (16).

3. The apparatus for treating tail gas of silicon carbide production according to claim 1, characterized in that: The bottom of the first box (5) is provided with a drain outlet (10), which penetrates the bottom of the support platform (2) and is connected to a drain valve (11).

4. The apparatus for treating tail gas of silicon carbide production according to claim 1, characterized in that: The nozzle (3) is provided with a second housing (18) fixedly connected to the bottom of the inner wall of the support platform (2). The two sides of the second housing (18) are respectively connected to the air inlet (4) and the connecting pipe (6). A water pump (19) is fixedly connected to the side of the second housing (18) away from the air inlet (4). The output end of the water pump (19) extends to the outside of the support platform (2) and is connected to the cooling box (20). The cooling box (20) is fixedly connected to the top of the support platform (2). The other side of the cooling box (20) is connected to the water inlet pipe (24). The other end of the water inlet pipe (24) extends to the inside of the support platform (2) and is connected to the water distribution tank (25). The water distribution tank (25) is fixedly connected to the top of the second housing (18) and is connected to the top of the nozzle (3).

5. The apparatus for treating tail gas of silicon carbide production according to claim 4, characterized in that: The top of the cooling box (20) is equipped with a cooling plate (21), and the interior of the cooling box (20) is provided with a heat sink (22) fixedly connected to the bottom of the cooling plate (21). A fan (23) is provided on the side of the cooling plate (21) near the protective shell (14), and the fan (23) is fixedly connected to the top of the support platform (2).

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