A waste gas pretreatment device for CO catalytic combustion furnace

Abstract

The utility model provides a kind of waste gas pretreatment device for CO catalytic combustion furnace, it is related to CO catalytic combustion furnace technical field, including furnace body, the heat exchanger is fixed in the furnace body inner wall bottom, the air inlet pipe is fixed in one side of furnace body bottom and penetrates, the exhaust port is opened in the other side of furnace body bottom and penetrates, the gas permeable net is rotatably connected in the furnace body inner wall top.This device rotates by starting servo motor and driving driving gear, driving driven gear and driving roller rotate, drive gas permeable net to rotate inside furnace body, baffle will drive catalyst inside the bottom of gas permeable net to rotate, when catalyst rotates to the top of gas permeable net, it is automatically dropped under the influence of gravity, so that catalyst forms a flowing wall in gas permeable net, gas in furnace body can enter gas permeable net by gas hole, gas can be in full contact with catalyst, so that gas can be in full contact with internal catalyst, improve the effect of catalytic efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of CO catalytic combustion furnace technology, and more specifically, it relates to a waste gas pretreatment device for a CO catalytic combustion furnace. Background Technology

[0002] The catalytic combustion CO combustion furnace is welded from carbon steel plates, with electric heating tubes and catalysts placed inside, and an insulation layer and iron plates added to the outside. The catalytic combustion device consists of an inner liner and an outer shell, both made of carbon steel. The catalytic combustion device adds a tubular heat exchanger. When the high-temperature gas after combustion passes through the heat exchanger, it transfers some of its heat energy to the untreated low-temperature organic waste gas, making full use of the heat energy and saving energy. The catalyst is used to lower the oxidation reaction temperature and accelerate the chemical reaction rate.

[0003] Based on the above, the following problems were found: In existing catalytic furnaces, the catalyst is usually placed directly on a tray with some ventilation holes. In multi-layer catalytic furnaces, the catalyst is placed in layers, making it difficult for gas to enter the top. This results in very little contact between the catalyst and the gas at the top, leading to insufficient utilization of the internal catalyst, thus wasting resources and reducing catalytic efficiency.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a waste gas pretreatment device for CO catalytic combustion furnace to achieve a more practical purpose. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a waste gas pretreatment device for a CO catalytic combustion furnace, which solves the problem that in current multi-layer catalytic converters, the gas is placed in layers, making it difficult for the gas to enter the top, resulting in very little contact between the catalyst and the gas at the top, and thus insufficient utilization of the internal catalyst.

[0006] This utility model provides a waste gas pretreatment device for a CO catalytic combustion furnace, which is achieved by the following specific technical means:

[0007] A waste gas pretreatment device for a CO catalytic combustion furnace includes a furnace body. A heat exchanger is fixed to the bottom of the inner wall of the furnace body. An air inlet pipe is fixed through one side of the bottom of the furnace body, and an exhaust port is opened through the other side of the bottom of the furnace body. A permeable mesh is rotatably connected to the top of the inner wall of the furnace body. An active roller is fixed to one end of the permeable mesh. A permeable hole is opened through the outer wall of the permeable mesh. A baffle is fixed to the inner wall of the permeable mesh. An electric heating rod is fixed to the upper middle part of the inner wall of the furnace body. The active roller moves through the outer wall of the furnace body. A driven gear is fixed to one end of the active roller. A heat insulation cover is fixed to the side of the furnace body near the driven gear. A servo motor is fixed to one side of the heat insulation cover. The power output end of the servo motor passes through the outer wall of the heat insulation cover and is fixed to the active gear. The active gear and the driven gear mesh with each other.

[0008] Furthermore, multiple heating rods are provided, and the multiple heating rods are located at the bottom of the breathable mesh in an arc shape at equal intervals.

[0009] Furthermore, the ventilation holes are provided in multiple sets, and the multiple sets of ventilation holes are arranged in a circumferentially equidistant manner. Each set of ventilation holes is provided with multiple ventilation holes, and the multiple ventilation holes are arranged in a horizontally equidistant manner.

[0010] Furthermore, the baffle is inclined to the inner wall of the breathable mesh, and multiple baffles are provided, with the multiple baffles and multiple sets of breathable holes arranged in an alternating manner.

[0011] Furthermore, a connecting rod is fixed to the inner wall of the other end of the ventilation mesh, a driven shaft is fixed to the middle of the connecting rod, and a feeding pipe is fixed through the top of the furnace body near the driven shaft.

[0012] Furthermore, the driven shaft is rotatably connected to the furnace body, and the gap between the end of the venting mesh near the driven shaft and the inner wall of the furnace body is less than 2mm.

[0013] Furthermore, the furnace body is hollow and double-layered, and the hollow part of the furnace body is filled with heat insulation cotton.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, the servo motor drives the drive gear to rotate, which in turn drives the driven gear and the drive roller to rotate. This causes the permeable mesh to rotate inside the furnace. The baffle drives the catalyst at the bottom of the permeable mesh to rotate as well. When the catalyst rotates to the top of the permeable mesh, it falls automatically due to gravity, forming a flowing wall inside the permeable mesh. Through the vent holes, the gas entering the furnace can enter the permeable mesh, allowing the gas to fully contact the catalyst, thereby improving the catalytic efficiency.

[0016] 2. In this utility model, the catalyst will suffer some loss after long-term use and impact. When adding the catalyst, the baffle can be removed and the catalyst can be added through the venting mesh of the feeding pipe box, thus achieving a very convenient effect of catalyst replenishment. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a side view of the overall structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the servo motor structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the furnace body of this utility model.

[0021] The correspondence between the component names in the diagram and the attached drawing numbers is as follows:

[0022] 1. Furnace body; 2. Air inlet pipe; 3. Heat exchanger; 4. Heating rod; 5. Connecting rod; 6. Driven shaft; 7. Ventilation mesh; 8. Ventilation hole; 9. Baffle; 10. Feeding pipe; 11. Heat insulation cover; 12. Servo motor; 13. Drive gear; 14. Driven gear; 15. Drive roller; 16. Heat insulation cotton; 17. Exhaust port. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; in addition, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Example:

[0026] As attached Figure 1 To be continued Figure 4 As shown:

[0027] This utility model provides a waste gas pretreatment device for a CO catalytic combustion furnace, including a furnace body 1. A heat exchanger 3 is fixed to the bottom of the inner wall of the furnace body 1. An air inlet pipe 2 is fixed through one side of the bottom of the furnace body 1, and an exhaust port 17 is opened through the other side of the bottom of the furnace body 1. A permeable mesh 7 is rotatably connected to the top of the inner wall of the furnace body 1. An active roller 15 is fixed to one end of the permeable mesh 7. A permeable hole 8 is opened through the outer wall of the permeable mesh 7. A baffle 9 is fixed to the inner wall of the permeable mesh 7. An electric heating rod 4 is fixed above the middle of the inner wall of the furnace body 1. The active roller 15 is movably inserted through the furnace body 1. A driven gear 14 is fixed to one end of the outer side of the active roller 15 through the outer wall of the furnace body 1. A heat insulation cover 11 is fixed to the side of the furnace body 1 near the driven gear 14. A servo motor 12 is fixed to one side of the heat insulation cover 11. The power output end of the servo motor 12 passes through the outer wall of the heat insulation cover 11 and is fixed to the active gear 13. The active gear 13 and the driven gear 14 mesh with each other. The servo motor 12 drives the active gear 13 to rotate, which in turn drives the driven gear 14 and the active roller 15 to rotate, causing the ventilation mesh 7 to rotate inside the furnace body 1.

[0028] The heating rods 4 are arranged in multiple arcs at equal intervals at the bottom of the breathable mesh 7. By placing multiple heating rods 4 at the bottom of the breathable mesh 7, the gas to be catalyzed is heated. The multiple heating rods 4 are placed at the bottom and can usually rise upwards after generating heat, so that the gas can also be heated during catalysis.

[0029] The ventilation holes 8 are provided in multiple sets, and the multiple sets of ventilation holes 8 are arranged in a circumferentially equidistant manner. Each set of ventilation holes 8 is provided with multiple ventilation holes, and the multiple ventilation holes 8 are arranged horizontally at equal intervals. Through the ventilation holes 8, the gas entering the furnace body 1 can enter the ventilation mesh 7. The ventilation mesh 7 is filled with a catalyst, so that the gas can come into contact with the catalyst.

[0030] The baffle 9 is inclined to the inner wall of the venting mesh 7. There are multiple baffles 9, and the multiple baffles 9 are staggered with multiple sets of venting holes 8. When the venting mesh 7 rotates, the baffles 9 will drive the catalyst at the bottom of the venting mesh 7 to rotate together. When the catalyst rotates to the top of the venting mesh 7, it will fall automatically under the influence of gravity, so that the catalyst forms a flowing wall inside the venting mesh 7, and the gas can fully contact the catalyst.

[0031] Among them, a connecting rod 5 is fixed to the inner wall of the other end of the air-permeable mesh 7, and a driven shaft 6 is fixed in the middle of the connecting rod 5. A feeding pipe 10 is fixed through the top of the furnace body 1 near the driven shaft 6. A baffle is set at the bottom of the feeding pipe 10. After long-term use and impact, the catalyst will be damaged to a certain extent. When adding the catalyst, the baffle can be removed and the catalyst can be added from the air-permeable mesh 7 in the feeding pipe 10.

[0032] The driven shaft 6 is rotatably connected to the furnace body 1. The gap between the end of the venting mesh 7 near the driven shaft 6 and the inner wall of the furnace body 1 is less than 2mm. The gap between the venting mesh 7 and the furnace body 1 is small, so as to prevent the catalyst from flowing out from the gap between the venting mesh 7 and the furnace body 1.

[0033] The furnace body 1 is hollow and double-layered. The hollow part of the furnace body 1 is filled with heat insulation cotton 16. The heat insulation pad 16 is used to keep the furnace body 1 warm and prevent heat loss. The heat insulation cover 11 is used to insulate the servo motor 12. Gear transmission is used to prevent heat from being directly transferred and affecting the operation of the servo motor 12.

[0034] The specific usage and function of this embodiment are as follows:

[0035] In this invention, external gas is first introduced through the inlet pipe 2, moves upward through the heat exchanger 3, and is heated by multiple heating rods 4 located at the bottom of the permeable mesh 7. The heating rods 4 are positioned at the bottom so that they can rise after generating heat, allowing for heating during the catalytic process. The baffle is removed, and the catalyst is added into the permeable mesh 7 through the feeding pipe 10. Then, the servo motor 12 is started, driving the drive gear 13 to rotate, which in turn drives the driven gear 14 and the drive roller 15 to rotate, causing the permeable mesh 7 to rotate inside the furnace body 1. The baffle 9 then rotates the permeable mesh 7. The catalyst at the bottom of the furnace rotates together. When the catalyst rotates to the top of the permeable mesh 7, it falls automatically due to gravity, forming a flowing wall inside the permeable mesh 7. The gas entering the furnace body 1 can enter the permeable mesh 7 through the vent holes 8, allowing the gas to fully contact the catalyst. After catalysis, the gas passes through the heat exchanger 3 and is finally discharged from the exhaust port 17. During use, the furnace body 1 is insulated by the heat insulation pad 16 to prevent heat loss. The servo motor 12 is insulated by the heat insulation cover 11. Gear transmission is used to prevent direct heat transfer from affecting the operation of the servo motor 12.

[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A waste gas pretreatment device for a CO catalytic combustion furnace, comprising a furnace body (1), wherein a heat exchanger (3) is fixed to the bottom of the inner wall of the furnace body (1), characterized in that: An air inlet pipe (2) is fixed through one side of the bottom of the furnace body (1), and an exhaust port (17) is opened through the other side of the bottom of the furnace body (1). A venting mesh (7) is rotatably connected to the top of the inner wall of the furnace body (1). An active roller (15) is fixed to one end of the venting mesh (7). Ventilation holes (8) are opened through the outer wall of the venting mesh (7). A baffle (9) is fixed to the inner wall of the venting mesh (7). An electric heating rod (4) is fixed above the middle of the inner wall of the furnace body (1). The moving roller (15) moves through the outer wall of the furnace body (1). A driven gear (14) is fixed at one end of the outer side of the moving roller (15). A heat insulation cover (11) is fixed on the side of the furnace body (1) near the driven gear (14). A servo motor (12) is fixed on one side of the heat insulation cover (11). The power output end of the servo motor (12) passes through the outer wall of the heat insulation cover (11) and is fixed with a driving gear (13). The driving gear (13) and the driven gear (14) mesh with each other.

2. The waste gas pretreatment device for a CO catalytic combustion furnace as described in claim 1, characterized in that: Multiple heating rods (4) are provided, and the multiple heating rods (4) are located at the bottom of the breathable mesh (7) in an arc shape at equal intervals.

3. The waste gas pretreatment device for a CO catalytic combustion furnace as described in claim 1, characterized in that: The ventilation holes (8) are provided in multiple sets, and the multiple sets of ventilation holes (8) are arranged in a circumferentially equidistant manner. Each set of ventilation holes (8) is provided with multiple ventilation holes (8), and the multiple ventilation holes (8) are arranged in a horizontally equidistant manner.

4. The waste gas pretreatment device for a CO catalytic combustion furnace as described in claim 3, characterized in that: The baffle (9) is inclined to the inner wall of the breathable mesh (7), and multiple baffles (9) are provided. The multiple baffles (9) are respectively arranged in an alternating manner with multiple sets of breathable holes (8).

5. The waste gas pretreatment device for a CO catalytic combustion furnace as described in claim 1, characterized in that: A connecting rod (5) is fixed to the inner wall of the other end of the ventilation mesh (7), and a driven shaft (6) is fixed in the middle of the connecting rod (5). A feeding pipe (10) is fixed through the top of the furnace body (1) near the driven shaft (6).

6. The waste gas pretreatment device for a CO catalytic combustion furnace as described in claim 5, characterized in that: The driven shaft (6) is rotatably connected to the furnace body (1), and the gap between the end of the ventilated mesh (7) near the driven shaft (6) and the inner wall of the furnace body (1) is less than 2mm.

7. The waste gas pretreatment device for a CO catalytic combustion furnace as described in claim 1, characterized in that: The furnace body (1) is hollow and double-layered, and the hollow part of the furnace body (1) is filled with heat insulation cotton (16).

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