Catalytic combustion reactor for efficiently removing volatile organic compounds

Abstract

The utility model discloses a catalytic combustion reactor for efficiently removing volatile organic compounds, which relates to the field of waste gas treatment, and comprises a box body, a fixing frame is arranged in the box body, four groups of screw rods are rotatably connected in the fixing frame, the tops of the four groups of screw rods extend out of the box body, the end parts of the screw rods are connected with a driving assembly, and the driving assembly is connected with the box body. Mounting trays are in threaded connection with the exteriors of the four sets of lead screws, multiple sets of noble metal catalysts are arranged in the mounting trays, hole grooves are formed in the middle positions of the tops of the noble metal catalysts, and multiple sets of heating rods are mounted on the inner top wall of the box body. According to the utility model, multiple groups of noble metal catalysts are mounted on the mounting tray, and the hole grooves are formed in the middle of the noble metal catalysts, so that when the mounting tray ascends to drive the noble metal catalysts to ascend, multiple groups of heating rods can penetrate into the noble metal catalysts; the heat radiated by the heating rod can be transferred into the noble metal catalyst at the first time, so that the heat loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment, in particular to a catalytic combustion reactor for efficiently removing volatile organic matter. Background Art

[0002] Organic waste gas usually contains volatile organic compounds (VOCs). Countries around the world have continuously restricted VOC emissions through legislation, requiring VOC emission reductions in the entire process from raw materials to products, from production to consumption. In the end-of-pipe treatment process of organic waste gas, catalytic combustion technology is suitable for treating large-flow, low-concentration organic waste gas, which is in line with the concepts of high efficiency, low consumption, energy conservation and environmental protection advocated by today's society.

[0003] Catalytic combustion technology is a typical gas-solid phase catalytic reaction. Its essence is the deep oxidation of organic matter with the participation of active oxygen. The activation energy of the reaction is reduced by the catalyst, so that it can be flameless burned at a lower ignition temperature, producing CO2, N2 and H2O, and releasing a large amount of heat. The released heat can be recovered to preheat the organic waste gas and reduce energy consumption. The catalyst used in catalytic combustion technology is usually made of precious metals, generally about 30mm in size, and has multiple groups of vents. The application of catalysts can reduce the combustion temperature and improve the purification rate. Organic matter will release a lot of heat energy during flameless combustion, so catalytic combustion can save a lot of heat energy. Therefore, common catalytic combustion equipment mainly includes heat exchange area, electric heating area, catalytic combustion area and other parts, and the electric heating area is usually located above the catalytic combustion area. The electric heating area is composed of multiple groups of electric heating rods. The heat emitted by the electric heating rods when working will fill the entire combustion box to provide heat for catalytic combustion.

[0004] The three main working areas of the catalytic combustion equipment are the heat exchange area for preheating the organic waste gas, the electric heating area for providing heat, and the catalytic combustion area for combustion. The organic waste gas is also preheated first to increase the temperature of the organic waste gas, and then enters the catalytic combustion area to participate in combustion with the catalyst. There is a certain distance between the electric heating area and the catalytic combustion area in space, which makes the heat emitted by the electric heating area lose a lot during the transfer process. Part of it is transferred to the outside through the box, and part of it is transferred to the preheating area. In order to ensure that the catalytic combustion area has sufficient temperature and make up for part of the lost heat, the electric heating area needs to continuously supply power to the equipment, which is not conducive to energy conservation. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a catalytic combustion reactor for efficiently removing volatile organic compounds, so as to solve the technical problems mentioned in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a catalytic combustion reactor for efficiently removing volatile organic compounds, comprising a box body, a fixing frame is installed inside the box body, and four groups of screw rods are rotatably connected inside the fixing frame, and the tops of the four groups of screw rods extend out of the box body, the ends of the screw rods are connected to drive assemblies, the external threads of the four groups of screw rods are connected to mounting trays, and multiple groups of precious metal catalysts are arranged inside the mounting tray, and a hole groove is opened in the middle position of the top of the precious metal catalyst, and multiple groups of heating rods are installed on the inner top wall of the box body.

[0007] By adopting the above technical solution, a plurality of groups of precious metal catalysts are installed on the installation tray by setting a liftable installation tray, and a hole groove is opened in the middle of the precious metal catalyst. When the installation tray rises and drives the precious metal catalyst to rise, the plurality of groups of heating rods can pass through the interior of the precious metal catalyst, so that the heat dissipated by the heating rods can be transferred to the interior of the precious metal catalyst at the first time, thereby reducing heat loss and improving the treatment effect of organic matter.

[0008] The utility model is further configured that a preheating air duct is arranged inside the box body, and an air intake duct is arranged on the side of the box body, and the air intake duct is communicated with the preheating air duct.

[0009] By adopting the above technical solution and providing a curved preheating air duct, the organic waste gas can stay in the preheating air duct for as long as possible, thereby increasing the initial temperature of the organic waste gas.

[0010] The utility model is further configured that an exhaust duct is provided at the middle position of the top of the box body.

[0011] By adopting the above technical solution and arranging an exhaust pipe on the top of the box body, the exhaust gas generated by catalytic combustion can be discharged.

[0012] The utility model is further configured that a first mounting plate is installed inside the box body, and a first ventilation hole is opened in the middle position of the first mounting plate.

[0013] By adopting the above technical solution, by setting up a first mounting plate and opening a first ventilation hole in the middle of the first mounting plate, the organic waste gas discharged from the preheating air duct can be concentrated through the first ventilation hole and enter between the first mounting plate and the second mounting plate.

[0014] The utility model is further configured that a second mounting plate is installed inside the box body, and four groups of second ventilation holes are arranged through the top of the second mounting plate.

[0015] By adopting the above technical solution, a second mounting plate is provided, and the second mounting plate is provided with four groups of second ventilation holes, so that the organic waste gas between the first mounting plate and the second mounting plate can evenly enter the bottom of the mounting tray through the second ventilation holes.

[0016] The utility model is further configured such that a plurality of groups of third ventilation holes are evenly arranged on the sides of the first mounting plate and the second mounting plate.

[0017] By adopting the above technical solution and opening the third ventilation holes on the sides of the first mounting plate and the second mounting plate, a part of the organic waste gas can rise evenly.

[0018] The utility model is further configured that a maintenance hatch is provided on the side of the box body.

[0019] By adopting the above technical solution, a maintenance hatch is provided on the side of the box body so that the precious metal catalyst can be replaced.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] 1. The utility model installs multiple groups of precious metal catalysts on the installation tray by providing a liftable installation tray, and a hole groove is opened in the middle of the precious metal catalyst. When the installation tray rises and drives the precious metal catalyst to rise, multiple groups of heating rods can penetrate into the interior of the precious metal catalyst, so that the heat dissipated by the heating rods can be transferred to the interior of the precious metal catalyst in the first time, thereby reducing heat loss and improving the treatment effect of organic matter.

[0022] 2. The utility model can increase the residence time of organic waste gas in the preheating air duct by setting a preheating air duct, thereby increasing the initial temperature of the organic waste gas, so that the organic waste gas can be heated to the temperature required for the catalytic reaction more quickly, thereby improving the catalytic combustion efficiency of the equipment. The first mounting plate and the second mounting plate can make the organic waste gas more evenly dispersed, thereby more evenly heating the organic waste gas and improving the treatment effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the box of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the first mounting plate of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the second mounting plate of the utility model;

[0027] Figure 5This is a schematic diagram of the installation tray structure of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the precious metal catalyst of the utility model;

[0029] Figure 7 This is a schematic diagram of the connection between the box body and the heating rod of the utility model.

[0030] In the figure: 1. Box body; 2. Fixing frame; 3. Screw rod; 4. Mounting tray; 5. Precious metal catalyst; 6. Hole groove; 7. Heating rod; 8. Driving assembly; 9. Preheating air duct; 10. First mounting plate; 11. First ventilation hole; 12. Second mounting plate; 13. Second ventilation hole; 14. Third ventilation hole; 15. Intake duct; 16. Exhaust duct; 17. Maintenance hatch. DETAILED DESCRIPTION

[0031] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0032] The following describes an embodiment of the utility model based on its overall structure.

[0033] Embodiment 1

[0034] A catalytic combustion reactor for efficiently removing volatile organic compounds, such as Figure 1-7 As shown, it includes a box body 1, a fixing frame 2 is installed inside the box body 1, and four groups of screw rods 3 are rotatably connected inside the fixing frame 2, and the tops of the four groups of screw rods 3 extend out of the box body 1, and the ends of the screw rods 3 are connected to a driving assembly 8, which is composed of a motor, a bevel gear set and a sprocket chain assembly. The driving assembly 8 is used to drive the screw rod 3 to rotate, so as to realize the lifting and lowering of the installation tray 4, the external thread of the screw rod 3 is connected to the installation tray 4, and multiple groups of precious metal catalysts 5 are arranged inside the installation tray 4, and a hole groove 6 is opened in the middle position of the top of the precious metal catalyst 5, and multiple groups of heating rods 7 are installed on the inner top wall of the box body 1. By setting a lifting and lowering installation tray 4, multiple groups of precious metal catalysts 5 are installed on the installation tray 4, and a hole groove 6 is opened in the middle of the precious metal catalyst 5. When the installation tray 4 rises and drives the precious metal catalyst 5 to rise, multiple groups of heating rods 7 can be allowed to penetrate into the interior of the precious metal catalyst 5, so that the heat dissipated by the heating rods 7 can be transferred to the interior of the precious metal catalyst 5 in the first time, thereby reducing heat loss and improving the treatment effect of organic matter.

[0035] See also Figure 1A maintenance hatch 17 is provided on the side of the housing 1 , and the precious metal catalyst 5 can be replaced by providing the maintenance hatch 17 on the side of the housing 1 .

[0036] Embodiment 2

[0037] A catalytic combustion reactor for efficiently removing volatile organic compounds, such as Figure 2-7 As shown, a preheating air duct 9 is provided inside the box 1, and an air intake duct 15 is provided on the side of the box 1, and the air intake duct 15 is connected to the preheating air duct 9. By setting the curved preheating air duct 9, the organic waste gas can stay in the preheating air duct 9 for as long as possible, thereby increasing the initial temperature of the organic waste gas. By setting the preheating air duct 9, the residence time of the organic waste gas in the preheating air duct 9 can be increased, thereby increasing the initial temperature of the organic waste gas, so that the organic waste gas can be heated to the temperature required for the catalytic reaction more quickly, thereby improving the catalytic combustion efficiency of the equipment. The first mounting plate 10 and the second mounting plate 12 are provided to disperse the organic waste gas more evenly, thereby heating the organic waste gas more evenly and improving the treatment effect of the equipment.

[0038] See also Figure 2 An exhaust pipe 16 is arranged at the middle position of the top of the box body 1. By arranging the exhaust pipe 16 at the top of the box body 1, the exhaust gas generated by catalytic combustion can be discharged.

[0039] See also Figure 3 A first mounting plate 10 is installed inside the box body 1, and a first ventilation hole 11 is opened in the middle of the first mounting plate 10. By setting the first mounting plate 10 and opening the first ventilation hole 11 in the middle of the first mounting plate 10, the organic waste gas discharged from the preheating air duct 9 can be concentrated through the first ventilation hole 11 and enter between the first mounting plate 10 and the second mounting plate 12.

[0040] See also Figure 4 A second mounting plate 12 is installed inside the box body 1, and four groups of second ventilation holes 13 are arranged through the top of the second mounting plate 12. By setting the second mounting plate 12 and opening the four groups of second ventilation holes 13 on the second mounting plate 12, the organic waste gas between the first mounting plate 10 and the second mounting plate 12 can evenly enter the bottom of the mounting tray 4 through the second ventilation holes 13.

[0041] See also Figure 3 and Figure 4 A plurality of third ventilation holes 14 are evenly opened on the sides of the first mounting plate 10 and the second mounting plate 12. By opening the third ventilation holes 14 on the sides of the first mounting plate 10 and the second mounting plate 12, a portion of the organic waste gas can rise evenly.

[0042] The working principle of the utility model is as follows: start the heating rod 7 to heat the internal temperature of the box body 1 to the working temperature, and then pass the organic waste gas from the air intake pipe 15 into the preheating air duct 9, the organic waste gas stays in the preheating air duct 9 for a period of time for preheating treatment, and then the organic waste gas flows out of the preheating air duct 9 and enters the bottom of the first mounting plate 10, a part of the organic waste gas passes through the first ventilation hole 11 and then passes through the second ventilation hole 13, and a part of the organic waste gas passes through the third ventilation hole 14 on the side of the first mounting plate 10 and the second mounting plate 12, so that the organic waste gas is evenly dispersed under the mounting tray 4, and the organic waste gas reaching the bottom of the mounting tray 4 will pass through the mounting tray 4 and disperse into the multiple groups of precious metal catalysts 5. At this time, the temperature around the precious metal catalyst 5 has been heated to the working temperature, and the organic waste gas begins to burn flamelessly under the catalytic action of the precious metal catalyst 5. When the organic waste gas passes through the multiple groups of precious metal catalysts 5, the catalytic combustion treatment is completed and it is discharged through the exhaust pipe 16.

[0043] After the precious metal catalyst 5 has been used for a period of time, the furnace needs to be shut down and replaced. The heating rod 7 is turned off and the temperature is cooled down. The driving assembly 8 is started to drive the multiple sets of screw rods 3 to rotate, so that the height of the mounting tray 4 is lowered to the position of the maintenance hatch 17. The maintenance hatch 17 is opened to replace the precious metal catalyst 5. When the precious metal catalyst 5 is replaced, the reverse control driving assembly 8 is used to drive the mounting tray 4 to rise until the mounting tray 4 is in contact with the lower surface of the fixing frame 2. The replacement of the precious metal catalyst 5 is completed and the heating rod 7 can be started again for catalytic combustion.

[0044] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A catalytic combustion reactor for efficiently removing volatile organic compounds, comprising a housing (1), characterized in that: A fixing frame (2) is installed inside the box body (1), and four groups of screw rods (3) are rotatably connected inside the fixing frame (2), and the tops of the four groups of screw rods (3) extend out of the box body (1), and the ends of the screw rods (3) are connected to a driving assembly (8), and the external threads of the four groups of screw rods (3) are connected to a mounting tray (4), and multiple groups of precious metal catalysts (5) are arranged inside the mounting tray (4), and a hole groove (6) is opened in the middle position of the top of the precious metal catalyst (5), and multiple groups of heating rods (7) are installed on the inner top wall of the box body (1).

2. A catalytic combustion reactor for efficiently removing volatile organic compounds according to claim 1, characterized in that: A preheating air duct (9) is arranged inside the box (1), and an air intake duct (15) is arranged on the side of the box (1), and the air intake duct (15) is connected to the preheating air duct (9).

3. A catalytic combustion reactor for efficiently removing volatile organic compounds according to claim 1, characterized in that: An exhaust pipe (16) is arranged at the middle position of the top of the box body (1).

4. A catalytic combustion reactor for efficiently removing volatile organic compounds according to claim 1, characterized in that: A first mounting plate (10) is installed inside the box body (1), and a first ventilation hole (11) is opened in the middle of the first mounting plate (10).

5. A catalytic combustion reactor for efficiently removing volatile organic compounds according to claim 4, characterized in that: A second mounting plate (12) is installed inside the box body (1), and four groups of second ventilation holes (13) are arranged through the top of the second mounting plate (12).

6. A catalytic combustion reactor for efficiently removing volatile organic compounds according to claim 5, characterized in that: Multiple groups of third ventilation holes (14) are evenly arranged on the sides of the first mounting plate (10) and the second mounting plate (12).

7. The catalytic combustion reactor for efficiently removing volatile organic compounds according to claim 1, characterized in that: A maintenance door (17) is provided on the side of the box body (1).

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