Flue gas absorption and desulfurization equipment for silicon carbide smelting furnace

Abstract

The utility model relates to the technical field of waste gas desulfurization, in particular to silicon carbide smelting furnace flue gas absorption desulfurization equipment which comprises a gas inlet pipe, a reaction chamber and a treatment chamber, one end of the gas inlet pipe is fixedly connected with the reaction chamber, the bottom end of the reaction chamber is fixedly connected with supporting legs, and the top end of the reaction chamber is fixedly connected with a filling port. The bottom end of the reaction chamber is fixedly connected with an exhaust port, the interior of the reaction chamber is fixedly connected with porous plates, an activated carbon layer is filled between the two porous plates, a limestone layer is filled between the other two porous plates, and one end, far away from the air inlet pipe, of the reaction chamber is fixedly connected with a connecting pipe. By arranging the reaction chamber and the treatment chamber, multi-stage treatment of waste gas can be realized, and the waste gas enters the treatment chamber through the connecting pipe after being physically purified and filtered by the reaction chamber, is chemically purified in the treatment chamber and is discharged through the discharge pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas desulfurization, in particular to a fume absorption desulfurization device for a silicon carbide smelting furnace. Background Art

[0002] Silicon carbide (SiC) is rarely formed naturally and is mainly artificial. The common method is to mix quartz sand with coke, use the silicon dioxide and petroleum coke in it, add salt and sawdust, put it in an electric furnace, heat it to 2000 degrees Celsius, and obtain silicon carbide powder after various chemical process flows. During the manufacturing process, a large amount of polluting exhaust gas will be generated and directly discharged into the air, causing air pollution, which is very detrimental to the environment. Purification equipment is added to the outside of the processing plant.

[0003] Most of the existing waste gas purification devices are single primary purification, and the purification effect is relatively low and the effect is not ideal. Secondly, the purified waste gas is directly discharged without being tested, and it is unknown whether the purified waste gas meets the emission standards. Finally, some physical purification purification devices cannot be replaced or are difficult to replace. Therefore, in response to the above problems, a silicon carbide smelting furnace flue gas absorption desulfurization equipment is proposed. Utility Model Content

[0004] The utility model aims to provide a fume absorption desulfurization device for a silicon carbide smelting furnace to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A flue gas absorption desulfurization device for a silicon carbide smelting furnace comprises an air inlet pipe, a reaction chamber and a treatment chamber, wherein one end of the air inlet pipe is fixedly connected to the reaction chamber, the bottom end of the reaction chamber is fixedly connected to a support leg, the top end of the reaction chamber is fixedly connected to a filling port, the bottom end of the reaction chamber is fixedly connected to a discharge port, a perforated plate is fixedly connected to the inside of the reaction chamber, an activated carbon layer is filled between two perforated plates, and a limestone layer is filled between the other two perforated plates, one end of the reaction chamber away from the air inlet pipe is fixedly connected to a connecting pipe, a fan is fixedly connected to the middle position of the connecting pipe, one end of the connecting pipe away from the fan is fixedly connected to the treatment chamber, the bottom end of the treatment chamber is fixedly connected to a bracket, a partition arranged in an inclined state is fixedly connected to the inside of the treatment chamber, one end of the partition is provided with an overflow hole penetrating the partition near the edge, a storage box is fixedly connected to the top edge of the treatment chamber, a water pump is fixedly connected to the top of the storage box, one end of the water pump is fixedly connected to a water pipe, a nozzle is fixedly connected to the outside of the water pipe, and a collecting pipe is fixedly connected to the bottom end of the treatment chamber.

[0007] Preferably, a discharge pipe is fixedly connected to the top edge of the processing chamber, a detector is fixedly connected to the middle position of the discharge pipe, and a valve is fixedly connected to the end of the discharge pipe.

[0008] Preferably, the number of the perforated plates is four, two perforated plates form a group, and there are two groups in total.

[0009] Preferably, the filling port and the discharge port are both fixedly connected at a position between the two perforated plates.

[0010] Preferably, there are a plurality of nozzles, and the nozzles are arranged at the corners of the flue formed by the two partitions.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the present invention, the multi-stage treatment of waste gas can be achieved by setting up the reaction chamber and the treatment chamber. After being physically purified and filtered in the reaction chamber, the waste gas enters the treatment chamber through the connecting pipe, and after being chemically purified in the treatment chamber, it is discharged through the discharge pipe;

[0013] 2. In the utility model, the detector and valve are arranged to detect the purified waste gas when it passes through the exhaust pipe after physical and chemical purification, to check the purification effect and whether the purified waste gas meets the standard. If it does not meet the standard, the exhaust pipe can be closed by the valve to prevent the waste gas that does not meet the standard from being discharged and polluting the air;

[0014] 3. In the utility model, by providing the perforated plate, the filling port and the discharge port, it is possible to replace the purification device with an unsatisfactory purification effect. The activated carbon layer and the limestone layer are mostly granular or blocky, which enter the storage cavity formed between the two perforated plates through the filling port and can be discharged through the discharge port, thereby reducing the difficulty of replacing the purification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0017] Figure 3 This is a schematic diagram of the partition structure of the utility model.

[0018] In the figure: 1. air inlet pipe; 2. reaction chamber; 3. support leg; 4. filling port; 5. discharge port; 6. perforated plate; 7. activated carbon layer; 8. limestone layer; 9. connecting pipe; 10. fan; 11. treatment chamber; 12. bracket; 13. partition; 14. overflow hole; 15. storage box; 16. water pump; 17. water pipe; 18. nozzle; 19. discharge pipe; 20. detector; 21. valve; 22. collection pipe. DETAILED DESCRIPTION

[0019] 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.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] A flue gas absorption desulfurization device for a silicon carbide smelting furnace comprises an air inlet pipe 1, a reaction chamber 2 and a treatment chamber 11, wherein one end of the air inlet pipe 1 is fixedly connected to the reaction chamber 2, the bottom end of the reaction chamber 2 is fixedly connected to a support leg 3, the top end of the reaction chamber 2 is fixedly connected to a filling port 4, the bottom end of the reaction chamber 2 is fixedly connected to a discharge port 5, a perforated plate 6 is fixedly connected inside the reaction chamber 2, an activated carbon layer 7 is filled between two perforated plates 6, a limestone layer 8 is filled between another two perforated plates 6, a connecting pipe 9 is fixedly connected to the end of the reaction chamber 2 away from the air inlet pipe 1, and the middle position of the connecting pipe 9 is fixedly connected to There is a fan 10, and one end of the connecting pipe 9 away from the fan 10 is fixedly connected to the processing chamber 11, the bottom of the processing chamber 11 is fixedly connected to the bracket 12, the inside of the processing chamber 11 is fixedly connected to a partition 13 arranged in an inclined state, one end of the partition 13 is provided with an overflow hole 14 penetrating the partition 13 near the edge, a storage box 15 is fixedly connected to the top edge of the processing chamber 11, the top of the storage box 15 is fixedly connected to a water pump 16, one end of the water pump 16 is fixedly connected to a water pipe 17, the outside of the water pipe 17 is fixedly connected to a nozzle 18, and the bottom of the processing chamber 11 is fixedly connected to a collecting pipe 22.

[0024] An exhaust pipe 19 is fixedly connected to the top edge of the processing chamber 11, a detector 20 is fixedly connected to the middle position of the exhaust pipe 19, and a valve 21 is fixedly connected to the end of the exhaust pipe 19; there are four perforated plates 6, two in a group, and a total of two groups; the filling port 4 and the exhaust port 5 are both fixedly connected to the middle position of the two perforated plates 6; there are several nozzles 18, and the nozzles 18 are arranged at the corners of the flue formed by the two partitions 13.

[0025] Working process: Before using the device, first connect the air inlet pipe 1 of the device to the smoke exhaust device of the electric furnace, add the activated carbon layer 7 and the limestone layer 8 into the reaction chamber 2 through the filling port 4, add ammonia water into the storage box 15, and then power the fan 10 with an external power supply. The fan 10 starts to work, and the exhaust gas enters the reaction chamber 2 through the air inlet pipe 1, and then passes through the activated carbon layer 7 and the limestone layer 8 in the perforated plate 6. The exhaust gas after physical purification will enter the treatment chamber through the connecting pipe 9 under the action of the fan 10. 11. The interior of the treatment chamber 11 is provided with inclined partitions 13, which are arranged in a staggered manner on the left and right sides. A circuitous exhaust gas passage is formed between the partitions 13. After the exhaust gas enters the treatment chamber 11, the water pump 16 starts to pump ammonia water from the storage tank 15, and reaches the nozzle 18 through the water pipe 17. After the exhaust gas passes through the atomized ammonia water, the ammonia water and the residual sulfide in the exhaust gas react chemically to achieve the purpose of desulfurization. Since the partitions 13 are arranged in an inclined manner, the partitions 13 and the treatment chamber An overflow hole 14 is provided near the edge of one end connected to the partition 13 and the treatment chamber 11. The reacted ammonia water flows to the connection between the partition 13 and the treatment chamber 11 under the action of gravity, and flows downward through the overflow hole 14, which will not cause the accumulation of the used ammonia water in the treatment chamber 11. Finally, the ammonia water will flow to the bottom of the treatment chamber 11 and be discharged from the treatment chamber 11 through the collecting pipe 22. It is collected to prevent the sulfurized ammonia water from polluting the environment. The treated waste gas is discharged from the treatment chamber 11 through the discharge pipe 19 at the top of the treatment chamber 11. The detector 20 will detect the treated waste gas to check whether it meets the emission standards. If it does not meet the standards, the fan 10 will be powered off and the valve 21 will be closed at the same time to prevent the substandard waste gas from being discharged from the treatment device and entering the air. After a period of use, the activated carbon layer 7 and the limestone layer 8 cannot desulfurize the waste gas well, and can be discharged from the reaction chamber 2 through the discharge port 5 at the bottom, and then the activated carbon layer 7 and the limestone layer 8 to be used are added again to better treat the waste gas.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas absorption desulfurization device for a silicon carbide smelting furnace, comprising an air inlet pipe (1), a reaction chamber (2) and a treatment chamber (11), characterized in that: One end of the air intake pipe (1) is fixedly connected to a reaction chamber (2), the bottom end of the reaction chamber (2) is fixedly connected to a support leg (3), the top end of the reaction chamber (2) is fixedly connected to a filling port (4), the bottom end of the reaction chamber (2) is fixedly connected to a discharge port (5), a perforated plate (6) is fixedly connected inside the reaction chamber (2), an activated carbon layer (7) is filled between two of the perforated plates (6), and a limestone layer (8) is filled between another two of the perforated plates (6), an end of the reaction chamber (2) away from the air intake pipe (1) is fixedly connected to a connecting pipe (9), a fan (10) is fixedly connected to the middle of the connecting pipe (9), and the connecting pipe (9) is away from the fan ( One end of the treatment chamber (10) is fixedly connected to a treatment chamber (11), the bottom end of the treatment chamber (11) is fixedly connected to a bracket (12), the interior of the treatment chamber (11) is fixedly connected to a partition (13) arranged in an inclined state, one end of the partition (13) is provided with an overflow hole (14) penetrating the partition (13) near the edge, the top edge of the treatment chamber (11) is fixedly connected to a storage box (15), the top of the storage box (15) is fixedly connected to a water pump (16), one end of the water pump (16) is fixedly connected to a water pipe (17), the outside of the water pipe (17) is fixedly connected to a nozzle (18), and the bottom end of the treatment chamber (11) is fixedly connected to a collection pipe (22).

2. The silicon carbide smelting furnace flue gas absorption desulfurization equipment according to claim 1 is characterized in that: A discharge pipe (19) is fixedly connected to the top edge of the processing chamber (11), a detector (20) is fixedly connected to the middle of the discharge pipe (19), and a valve (21) is fixedly connected to the end of the discharge pipe (19).

3. The silicon carbide smelting furnace flue gas absorption desulfurization equipment according to claim 1 is characterized in that: The number of the perforated plates (6) is four, two perforated plates form a group, and there are two groups in total.

4. The silicon carbide smelting furnace flue gas absorption desulfurization equipment according to claim 1, characterized in that: The filling port (4) and the discharge port (5) are both fixedly connected at a position between the two perforated plates (6).

5. The silicon carbide smelting furnace flue gas absorption desulfurization equipment according to claim 1, characterized in that: The number of the nozzles (18) is several, and the nozzles (18) are arranged at the corners of the flue formed by the two partitions (13).

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