Combustion purification equipment for combustible dust in waste gas

Abstract

The utility model belongs to the field of waste gas treatment, particularly relates to combustion and purification equipment for combustible dust in waste gas, and provides the following scheme aiming at the problem that the normal operation of the equipment is influenced because other substances contained in the existing waste gas can cause blockage of a filter material and dirt sticking of an electrostatic dust collection polar plate. The utility model relates to a catalytic combustion device which comprises a gas inlet pipeline, a gas outlet pipeline, a motor, a first combustion chamber, a second combustion chamber, a first combustor, a second combustor, an inner cylinder, an outer cylinder, an inner filter screen cylinder, an outer filter screen cylinder and a catalytic combustion filler layer, the outer cylinder is arranged on the outer side of the inner cylinder in a sleeving mode, a gap between the outer cylinder and the inner cylinder is blocked by a sealing plate, and a cavity is formed between the inner cylinder and the outer cylinder and is in a sealed state; the first combustion chamber is located in a cavity between the inner cylinder and the outer cylinder. The device can quickly remove combustible dust in waste gas, and is simple in structure, high in reliability, low in energy consumption, high in dust removal efficiency, good in effect, small in occupied area and high in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a combustion purification device for combustible dust in waste gas. Background Art

[0002] During the industrial production process, waste gas containing combustible dust such as fluff and flour is generated. The combustible dust contained in the waste gas has a certain explosion risk and is easy to adhere to the inner wall of the pipe. It is generally captured by filtering and electrostatic dust removal. Electrostatic dust removal has an explosion risk during the treatment process. At the same time, other substances contained in the waste gas, such as volatile organic compounds (VOCs), can cause filter material blockage and electrostatic dust removal plates to become sticky, thereby affecting the normal operation of the equipment.

[0003] The utility model provides a combustion purification device for combustible dust in exhaust gas, aiming to realize the reliable operation of the combustible dust purification process in the exhaust gas. Utility Model Content

[0004] The utility model provides a combustion purification device for combustible dust in waste gas, which solves the shortcomings existing in the prior art.

[0005] The utility model provides the following technical solutions:

[0006] A combustion purification device for combustible dust in exhaust gas, comprising an exhaust gas source, an air inlet pipe, an air outlet pipe, a motor, a No. 1 combustion chamber, a No. 2 combustion chamber, a No. 1 burner, a No. 2 burner, an inner cylinder, an outer cylinder, an inner filter cylinder, an outer filter cylinder, and a catalytic combustion filler layer. The outer cylinder is sleeved on the outer side of the inner cylinder, and the gap between the outer cylinder and the inner cylinder is blocked by a sealing plate, thereby forming a cavity between the inner cylinder and the outer cylinder, and the cavity is in a sealed form. The No. 1 combustion chamber is located in the cavity between the inner cylinder and the outer cylinder, and the No. 1 combustion chamber is a fan-shaped area. The angle is between 10° and 90°, combustion chamber No. 1 is composed of two first baffles and burner No. 2, and combustion chamber No. 1 is fixed; the combustion chamber No. 2 is also located in the cavity between the inner tube and the outer tube, which is a fan-shaped area, with an angle of 10° to 90°, and combustion chamber No. 2 is composed of two second baffles and burner No. 1, and combustion chamber No. 2 is fixed; the combustion chamber No. 1 and combustion chamber No. 2 are both fixed to the inner wall of the outer tube, and are arranged in a straight line symmetrically, and a filtering structure is arranged between the outer filter cylinder and the inner filter cylinder.

[0007] Preferably, the filtering structure includes a catalytic combustion filler layer wrapped between an outer filter cylinder and an inner filter cylinder, the inner filter cylinder is fixed to the outside of the inner cylinder, the catalytic combustion filler layer rotates with the inner cylinder, the outer filter cylinder and the inner filter cylinder are detachably fixedly connected, and the inner cylinder is connected to a driving structure.

[0008] Preferably, the catalytic combustion filler layer is composed of a cylinder inlaid with small particles of catalytic combustion material, and the catalytic combustion filler layer is replaceable.

[0009] Preferably, the driving structure includes a motor installed at the bottom end of the outer cylinder, and the output shaft of the motor is fixedly connected to the bottom of the inner cylinder. Driven by the motor, the outer filter cylinder and the inner filter cylinder rotate in a cycle through combustion chamber No. 1 and combustion chamber No. 2, so that the outer filter cylinder and the inner filter cylinder are always in a high temperature state to facilitate the adhesion of dust in the exhaust gas.

[0010] Preferably, the air outlet structure includes an air outlet pipe, which is fixed to the top of the outer cylinder, and the exhaust gas is discharged through the air outlet pipe after passing through the inner filter cylinder, the outer filter cylinder and the packing layer. Two ends of the three-way valve of the air inlet pipe are fixed between the outer cylinder and the inner cylinder, and the air inlet pipes at both ends are respectively located between the two combustion chambers No. 1 and No. 2, and the gas can directly enter the cavity between the inner cylinder and the outer cylinder through the air inlet pipe.

[0011] Preferably, the sealing plate of the outer cylinder is wrapped with thermal insulation cotton, and an inspection hole is provided below the outer cylinder, and the inspection hole is blocked by an inspection plate.

[0012] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0013] A waste gas combustible dust combustion purification device comprises an inlet and outlet pipe, two cylinders, a combustion chamber composed of two baffles and a burner, a filter cylinder, a motor, a heat preservation layer, and a catalytic combustion filler layer.

[0014] The exhaust gas passes into the cavity between the outer cylinder and the inner cylinder through the inlet pipe. When the exhaust gas passes through the filter cylinder, the combustible dust in the exhaust gas adheres to the outside of the filter cylinder under the filtering and adhesion of the filter cylinder. Then the filter cylinder and the inner cylinder are connected to the external motor and rotate through the combustion chamber driven by the motor. Under the action of the flame burning in the combustion chamber, the dust attached to the filter cylinder in the combustion chamber area is burned and removed, and the filter cylinder is heated. The inner and outer filter cylinders are maintained at a certain temperature under the action of the catalytic combustion filler layer, which is convenient for filtering and purifying the exhaust gas. The high-temperature flue gas generated in the combustion chamber and the exhaust gas purified by the filter cylinder are mixed in the inner cylinder after passing through the filter cylinder, and finally discharged through the exhaust pipe.

[0015] The utility model can realize the rapid removal of combustible dust in the exhaust gas, and has the advantages of simple structure, high reliability, low energy consumption, high dust removal efficiency, good effect, small footprint and strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic cross-sectional view of a combustion and purification device for combustible dust in exhaust gas provided by an embodiment of the present invention.

[0017] Reference numerals:

[0018] 1. Exhaust pipe; 2. Burner No. 2; 3. Insulation cotton; 4. Catalytic combustion filler layer; 5. Combustion chamber No. 2; 6. Outer cylinder; 7. Outer filter cylinder; 8. Inner filter cylinder; 9. Combustion chamber No. 1; 10. Motor; 11. Burner No. 1; 12. Inner cylinder; 13. Inlet pipe. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.

[0021] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0022] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0024] Example 1

[0025] Combined with Figure 1 During the operation of the setting machine in a printing and dyeing factory, a large amount of waste gas containing combustible dust such as fluff will be generated. This scheme takes the waste gas from the setting machine in a printing and dyeing factory as an example.

[0026] Before starting the setting machine, the equipment is first purged. The specific operations are as follows: the inlet pipe 13 is closed, the outlet pipe 1 is opened, the fuel pipes of burner No. 11 and burner No. 2 are in a closed state, burner 11 / 2 starts to purge, motor 10 is started, and purging begins. The purging time lasts for more than 10 minutes.

[0027] After the purging is completed, the inlet pipe 13 is opened. After the exhaust gas of the setting machine passes through the inlet pipe into the cavity between the outer cylinder 6 and the inner cylinder 12, it first passes through the outer filter cylinder 7. The combustible dust in the exhaust gas of the setting machine adheres to the outer side of the outer filter cylinder 7 under the filtering and adhesion of the outer filter cylinder 7. The gas passes through the inner filter cylinder 8 for filtration and purification. Under the filtering and purification effect of the double filter cylinders, the combustible dust in the exhaust gas can be better filtered out. Then the filter cylinder 8 / 7 and the inner cylinder 12 are pulled by the external motor 10. , rotates through the combustion chamber 5 / 9, and under the action of the flame burning in the combustion chamber, the dust attached to the inner and outer filter cylinders 8 / 7 that are transferred to the combustion chamber area is burned and removed, and the inner and outer filter cylinders 8 / 7 are heated. Under the action of the catalytic combustion filler layer 4, the temperature of the filter cylinder is maintained at a certain height, which is convenient for filtering and purifying the exhaust gas. The high-temperature flue gas generated in the combustion chamber 5 / 9 and the exhaust gas of the setting machine purified by the inner and outer filter cylinders 8 / 7 are mixed in the inner cylinder 12, and finally discharged through the exhaust pipe 1.

[0028] After the setting machine stops working, the inlet flue 13 is closed, and the rest of the equipment works normally, so that the inner and outer filter cylinders 8 / 7 rotate through the combustion chamber 13 to obtain a higher temperature and more complete burning purification. The duration is more than 30 minutes, the fuel pipeline of the burner 11 / 2 is closed, and the air supply fan of the burner 11 / 2 is used for purging, which lasts for more than 10 minutes. After the purging is completed, the air supply fan of the burner 11 / 2 is closed, the air outlet pipeline 1 is closed, and the motor 10 is turned off.

[0029] A combustion and purification device for combustible dust in exhaust gas, based on the above principle, has the following specific structure:

[0030] It includes an exhaust gas source, an air inlet pipe 13, an air outlet pipe 1, a motor 10, a No. 1 combustion chamber 9, a No. 2 combustion chamber 5, a No. 1 burner 11, a No. 2 burner 2, an inner tube 12, an outer tube 6, an inner filter tube 8, an outer filter tube 7, and a catalytic combustion filler layer 4. The outer tube 6 is sleeved on the outer side of the inner tube 12, and the gap between the outer tube 6 and the inner tube 12 is blocked by a sealing plate, so that a cavity is formed between the inner tube 12 and the outer tube 6, and the cavity is in a sealed state. The No. 1 combustion chamber 9 is located in the cavity between the inner tube 12 and the outer tube 6. Combustion chamber No. 1 9 is a fan-shaped area with an angle of 10° to 90°. Combustion chamber No. 1 9 is composed of two first baffles and burner No. 2 2, and combustion chamber No. 1 9 is fixed; combustion chamber No. 2 5 is also located in the cavity between the inner tube 12 and the outer tube 6, and is a fan-shaped area with an angle of 10° to 90°. Combustion chamber No. 2 5 is composed of two second baffles and burner No. 1 11, and combustion chamber No. 2 5 is fixed; combustion chamber No. 1 9 and combustion chamber No. 2 5 are both fixed to the inner wall of the outer tube 6, and are arranged in a straight line symmetrically.

[0031] A catalytic combustion filler layer 4 is wrapped between the outer filter cylinder 7 and the inner filter cylinder 8. The inner filter cylinder 8 is fixed on the outside of the inner cylinder 12. The catalytic combustion filler layer 4 rotates with the inner cylinder 12. The outer filter cylinder 7 and the inner filter cylinder 8 are connected by threads and are detachable. The inner cylinder 12 is connected to a driving structure.

[0032] The catalytic combustion filler layer 4 is composed of a cylinder inlaid with small particles of catalytic combustion material, and the catalytic combustion filler layer 4 is replaceable.

[0033] The driving structure includes a motor 10 installed at the bottom end of the outer cylinder 6. The output shaft of the motor 10 is fixedly connected to the bottom of the inner cylinder 12. Driven by the motor 10, the outer filter cylinder 7 and the inner filter cylinder 8 rotate in a circular manner through the No. 1 combustion chamber 9 and the No. 2 combustion chamber 5, so that the outer filter cylinder 7 and the inner filter cylinder 8 are always in a high temperature state to facilitate the adhesion of dust in the exhaust gas.

[0034] The motor 10 drives the inner cylinder 12 to rotate via the reduction gear.

[0035] The exhaust structure includes an exhaust pipe 1, which is fixed to the top of the outer cylinder 6, and the exhaust gas is discharged through the exhaust pipe 1 after passing through the inner filter cylinder 8, the outer filter cylinder 7 and the packing layer 4. The two ends of the three-way valve of the intake pipe 13 are fixed between the outer cylinder 6 and the inner cylinder 12. The intake pipes 13 at both ends are respectively located between the two No. 1 combustion chambers 9 and No. 2 combustion chambers 5. The gas can directly enter the cavity between the inner cylinder 12 and the outer cylinder 6 through the intake pipe 13.

[0036] The sealing plate of the outer cylinder 6 is wrapped with thermal insulation cotton 3, and an inspection hole is arranged below the outer cylinder 6, and the inspection hole is blocked by an inspection plate.

[0037] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A combustion purification device for combustible dust in exhaust gas, comprising an exhaust gas source, an air inlet pipe (13), an air outlet pipe (1), a motor (10), a No. 1 combustion chamber (9), a No. 2 combustion chamber (5), a No. 1 burner (11), a No. 2 burner (2), an inner cylinder (12), an outer cylinder (6), an inner filter cylinder (8), an outer filter cylinder (7), and a catalytic combustion filler layer (4), characterized in that: The outer cylinder (6) is sleeved on the outer side of the inner cylinder (12), and the gap between the outer cylinder (6) and the inner cylinder (12) is blocked by a sealing plate, thereby forming a cavity between the inner cylinder (12) and the outer cylinder (6), and the cavity is in a sealed state. The No. 1 combustion chamber (9) is located in the cavity between the inner cylinder (12) and the outer cylinder (6). The No. 1 combustion chamber (9) is a fan-shaped area with an angle of 10° to 90°. The No. 1 combustion chamber (9) is composed of two first baffles and a No. 2 burner (2). The No. 1 combustion chamber (9) 9) is fixed; the No. 2 combustion chamber (5) is also located in the cavity between the inner tube (12) and the outer tube (6), which is a fan-shaped area with an angle of 10° to 90°. The No. 2 combustion chamber (5) is composed of two second baffles and the No. 1 burner (11), and the No. 2 combustion chamber (5) is fixed; the No. 1 combustion chamber (9) and the No. 2 combustion chamber (5) are both fixed to the inner wall of the outer tube (6), and are arranged in a straight line symmetrically. A filtering structure is provided between the outer filter cylinder (7) and the inner filter cylinder (8).

2. The combustion and purification equipment for combustible dust in exhaust gas according to claim 1, characterized in that: The filtering structure comprises a catalytic combustion filler layer (4) wrapped between an outer filter cylinder (7) and an inner filter cylinder (8); the inner filter cylinder (8) is fixed to the outside of the inner cylinder (12); the catalytic combustion filler layer (4) rotates with the inner cylinder (12); the outer filter cylinder (7) and the inner filter cylinder (8) are detachably fixedly connected; and the inner cylinder (12) is connected to a driving structure.

3. The combustion and purification equipment for combustible dust in exhaust gas according to claim 2, characterized in that: The catalytic combustion filler layer (4) is composed of a cylinder inlaid with small particles of catalytic combustion material.

4. The combustion and purification equipment for combustible dust in exhaust gas according to claim 3 is characterized in that: The driving structure comprises a motor (10) installed at the bottom end of the outer cylinder (6), the output shaft of the motor (10) being fixedly connected to the bottom of the inner cylinder (12), and being driven by the motor (10) to rotate, so that the outer filter cylinder (7) and the inner filter cylinder (8) are circulated and rotated through the No. 1 combustion chamber (9) and the No. 2 combustion chamber (5), so that the outer filter cylinder (7) and the inner filter cylinder (8) are always in a high temperature state to facilitate the adhesion of dust in the exhaust gas.

5. The combustion and purification equipment for combustible dust in exhaust gas according to claim 4, characterized in that: The exhaust pipe (1) is fixed to the top of the outer cylinder (6), and the exhaust gas is discharged through the exhaust pipe (1) after passing through the inner filter cylinder (8), the outer filter cylinder (7) and the packing layer (4). Two ends of the three-way valve of the intake pipe (13) are fixed between the outer cylinder (6) and the inner cylinder (12), and the intake pipes (13) at both ends are respectively located between the two No. 1 combustion chambers (9) and No. 2 combustion chambers (5). The gas can directly enter the cavity between the inner cylinder (12) and the outer cylinder (6) through the intake pipe (13).

6. The combustion and purification equipment for combustible dust in exhaust gas according to claim 5, characterized in that: The sealing plate of the outer cylinder (6) is wrapped with thermal insulation cotton (3), and an inspection hole is provided below the outer cylinder (6), and the inspection hole is blocked by an inspection plate.

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