Combined catalytic combustion flue gas treatment device

Abstract

The utility model discloses a combined catalytic combustion flue gas treatment device which comprises a combustion furnace and a mixing box, the mixing box is fixedly installed at the bottom of an inner cavity of the combustion furnace, a flue gas pipe is installed at one end of the combustion furnace, one end of a flue gas inlet branch pipe is installed at the top of the combustion furnace, and the other end of the flue gas inlet branch pipe is connected with a flue gas inlet main pipe. One end of the smoke inlet main pipe extends into the top of the smoke box; the top of the water tank is provided with one end of a water inlet pipe, and the other end of the water inlet pipe is connected with the top of the smoke box. An air pipe is installed on one side wall of the smoke box, and an adsorption plate is installed on the lower portion of an inner cavity of the smoke box. The waste heat of oxidized flue gas is used for preheating air in the air pipe, so that the effect of recycling heat is achieved, impurities in the flue gas fall into the adsorption plate under the action of water through the vaporific spray head, and the impurities in the flue gas are better removed; and under the interaction of the drawer plate and the piston opening, the effect that the adsorption plate is convenient to mount and dismount is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of waste treatment technology, specifically, it relates to a combined catalytic combustion flue gas treatment device. Background Technology

[0002] Catalytic combustion is a purification method that uses a catalyst to oxidize and decompose combustible substances in waste gas at a suitable temperature. When organic gas heated to a certain temperature passes through the catalyst layer, oxygen and organic gas are adsorbed onto the porous catalyst surface, increasing the chances of contact and collision between oxygen and organic gas, improving activity, and causing the organic gas to undergo a vigorous chemical reaction with oxygen to generate CO2 and H2O, while generating heat, thus turning the organic gas into non-toxic and harmless gas. However, because the catalyst support is made of porous material with a large specific surface area, when oxygen and organic gas collide with the catalyst support, the catalyst support will adsorb a large amount of dust after long-term use. This dust is prone to clogging and needs to be disassembled and replaced or cleaned regularly, which is very inconvenient. In some catalytic combustion devices, the flue gas produced is directly emitted, and the heat in the flue gas is not effectively utilized. Moreover, the filter device in the flue gas emission is prone to clogging and difficult to clean.

[0003] Patent CN220779490U discloses a catalytic combustion exhaust gas treatment device, which uses a structure such as a rotating wheel and a transmission belt to drive a cleaning brush to rotate and clean the bottom of the dust adsorption plate for catalytic combustion exhaust gas treatment, thus removing the adsorbed dust. However, the flue gas generated by the catalytic combustion device in this patent is directly emitted without utilizing the heat in the flue gas. Furthermore, the flue gas is only cleaned by cleaning the filter device during emission, which does not clean the filter device. Over time, the filter device will easily become clogged.

[0004] Patent CN211925788U discloses a catalytic combustion device for industrial waste gas pollution control. It uses a first sealing plate and a second sealing plate to be guided and snapped together by a guide groove. The cover plate is attached to the fixed box and fixed by bolts. The filter device can be disassembled, installed and cleaned. The internal S-pipe is difficult to clean and the replacement of the filter device is cumbersome.

[0005] In the aforementioned patent's technical solution, the oxidized flue gas is directly emitted without utilizing the heat of the oxidized flue gas, resulting in waste. Furthermore, the filter device suffers from problems such as inconvenience in installation and disassembly. Utility Model Content

[0006] To address the technical problems in existing technologies where the flue gas generated by catalytic combustion devices is directly emitted without utilizing the heat in the flue gas, and where cleaning the filter device during flue gas emission is insufficient to clean the filter device, leading to easy clogging over time, this utility model provides a combined catalytic combustion flue gas treatment device.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A combined catalytic combustion flue gas treatment device includes a combustion furnace and a mixing box. The mixing box is fixedly installed at the bottom of the inner cavity of the combustion furnace. A flue gas pipe is installed on the outer wall of the bottom of one end of the combustion furnace. One end of a flue gas inlet branch pipe is installed on the top of the combustion furnace, and the other end of the flue gas inlet branch pipe is connected to the main flue gas inlet pipe. One end of the main flue gas inlet pipe extends into the top of the flue gas box. A water tank is fixedly installed at one end of the flue gas box. One end of a water inlet pipe is installed on the outer wall of the top of the water tank, and the other end of the water inlet pipe is connected to the top of the flue gas box. An air pipe is installed on one side wall of the flue gas box.

[0009] Furthermore, a catalytic bed is installed in the upper part of the combustion furnace cavity, and a heating block is fixedly installed on the inner wall of the combustion furnace at the catalytic bed.

[0010] Furthermore, an exhaust pipe and a drain pipe are also installed on the outer wall of the flue gas box on the same side as the air pipe, with the drain pipe extending into the bottom of the inner cavity of the flue gas box.

[0011] Furthermore, a partition is fixedly installed in the middle of the inner cavity of the flue gas box, and air vents are evenly opened on the upper part of the partition; the partition divides the flue gas box into an upper inner cavity and a lower inner cavity.

[0012] Furthermore, one end of the air pipe is fixedly inserted through the upper inner cavity of the flue gas box, and the other end extends into the inner cavity of the mixing box; one end of the flue gas pipe is connected to the waste flue gas generated in the industry, and the other end of the flue gas pipe is fixedly inserted through the combustion furnace and extends into the inner cavity of the mixing box.

[0013] Furthermore, an exhaust port is opened at the top of the mixing box; a motor is fixedly installed on the outer wall of the combustion furnace on the same side as the flue gas pipe, the bearing of the motor passes through the combustion furnace and is fixedly connected to the rotating shaft, the rotating shaft passes through one side of the mixing box, and a disturbance plate is fixedly connected to the rotating shaft, the disturbance plate is wound around the rotating shaft in an S shape.

[0014] Furthermore, one end of the water inlet pipe passes through the top of the flue gas box and through the partition to extend into the lower inner cavity of the flue gas box and is fixedly connected to the spray pipe. Both ends of the spray pipe are fixedly connected to the top of the lower inner cavity of the flue gas box, and the bottom of the spray pipe is evenly connected to the nozzle.

[0015] Furthermore, an adsorption plate is installed in the lower part of the inner cavity of the flue gas box, and sliding strips are fixedly installed on both sides of the adsorption plate. Sliding grooves are installed to match the sliding strips, and the sliding grooves are fixedly installed on both sides of the inner cavity of the flue gas box.

[0016] Furthermore, a drawer panel is fixedly installed at one end of the adsorption plate, and the drawer panel is larger than the adsorption plate on all four sides.

[0017] Furthermore, inserts are fixedly installed on one side of the drawer panel, and a handle and piston port are fixedly installed on the other side of the drawer panel. A groove is opened on the side of the flue box opposite to the inserts to match the inserts, and rubber is installed around the inserts.

[0018] The beneficial effects of this utility model are:

[0019] 1) This utility model utilizes the residual heat of the oxidized flue gas to preheat the air in the air pipe at the upper part of the flue gas box, thereby increasing the air temperature in the air pipe and facilitating subsequent oxidation reactions, thus achieving the effect of heat recovery and utilization.

[0020] 2) This utility model uses a mist nozzle to cause impurities in the oxidized flue gas in the lower part of the flue gas chamber to fall into the adsorption plate under the action of water, thereby removing impurities from the flue gas. Furthermore, the interaction between the drawer plate and the piston port achieves the effect of easy installation and disassembly of the adsorption plate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is an overall cross-sectional view of the present invention;

[0024] Figure 3 This is a top view of the flue gas box of this utility model;

[0025] Figure 4 This is a schematic diagram showing the connection between the flue gas box and the adsorption plate of this utility model;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Combustion furnace; 2. Water tank; 3. Flue gas box; 4. Main flue gas inlet pipe; 401. Branch flue gas inlet pipe; 5. Water inlet pipe; 6. Air pipe; 7. Exhaust pipe; 8. Flue gas pipe; 9. Motor; 10. Catalytic bed; 11. Heating block; 12. Rotating shaft; 13. Disturbing plate; 14. Mixing box; 15. Exhaust port; 16. Adsorption plate; 17. Drawer plate; 18. Insert strip; 19. Sliding strip; 20. Handle; 21. Piston port; 22. Groove; 23. Sliding groove; 24. Spray pipe; 25. Nozzle; 26. Drain pipe; 27. Baffle plate; 28. Gas outlet. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1 and Figure 2 As shown, a combined catalytic combustion flue gas treatment device includes a combustion furnace 1, with a flue gas pipe 8 installed on the outer wall of the bottom of one end of the combustion furnace 1; one end of a flue gas inlet branch pipe 401 is evenly installed on the outer wall of the top of the combustion furnace 1, and the other end of the flue gas inlet branch pipe 401 is connected to a main flue gas inlet pipe 4, with one end of the main flue gas inlet pipe 4 extending into the top of the flue gas box 3; a control valve is fixedly installed on the flue gas inlet branch pipe 401, which can adjust the opening and closing of the flue gas inlet branch pipe 401 according to the amount of flue gas.

[0030] A water tank 2 is fixedly installed at one end of the flue gas box 3. One end of the water inlet pipe 5 is installed on the top outer wall of the water tank 2. Water is transported from the water tank 2 to the water inlet pipe 5 using an existing water pump.

[0031] An air pipe 6 is installed on one side wall of the flue gas box 3, and air is delivered into the air pipe 6 using an existing air pump.

[0032] A partition 27 is fixedly installed in the middle of the inner cavity of the flue gas box 3. The upper part of the partition 27 has evenly spaced air outlets 28. The partition 27 divides the flue gas box 3 into an upper inner cavity and a lower inner cavity. The air outlets 28 can be equipped with guide vanes using existing technology. The guide vanes can guide the flue gas in the upper inner cavity of the flue gas box 3 into the lower inner cavity.

[0033] An exhaust pipe 7 and a drain pipe 26 are also installed on the outer wall of the flue gas box 3 on the same side as the air pipe 6. The exhaust pipe 7 extends into the lower inner cavity of the flue gas box 3, and the drain pipe 26 extends into the bottom of the lower inner cavity of the flue gas box 3. The sewage in the flue gas box 3 is pumped out using the existing water pump.

[0034] A catalytic bed 10 is installed in the upper part of the inner cavity of the combustion furnace 1. Preferably, the catalytic bed 10 can be installed in multiple layers, and this embodiment shows one layer. A heating block 11 is fixedly installed on the inner wall of the combustion furnace 1 at the catalytic bed 10. A mixing box 14 is fixedly installed at the bottom of the inner cavity of the combustion furnace 1. One end of the air pipe 6 is fixedly inserted through the upper inner cavity of the flue gas box 3, and the other end extends into the inner cavity of the mixing box 14. One end of the flue gas pipe 8 is connected to the waste flue gas generated in the industry, and the other end of the flue gas pipe 8 is fixedly inserted through the combustion furnace 1 and extends into the inner cavity of the mixing box 14.

[0035] An exhaust port 15 is opened at the top of the mixing box 14; a motor 9 is fixedly installed on the outer wall of the combustion furnace 1 on the same side as the flue gas pipe 8. The bearing of the motor 9 passes through the combustion furnace 1 and is fixedly connected to the rotating shaft 12. The rotating shaft 12 passes through one side of the mixing box 14. A disturbance plate 13 is fixedly connected to the rotating shaft 12. The disturbance plate 13 is wound around the rotating shaft 12 in an S-shape. The rotating shaft 12 is driven by the motor 9, and the rotating shaft 12 rotates, so that the flue gas and air in the mixing box 14 are fully mixed, achieving the effect of turbulence.

[0036] An air pump delivers air into the mixing chamber 14 through air pipe 6, while flue gas pipe 8 delivers flue gas into the mixing chamber 14. The air delivered by air pipe 6 and the flue gas delivered by flue gas pipe 8 are fully mixed in the mixing chamber 14 by the rotation of rotating shaft 12. The mixed flue gas is then exhausted into the inner cavity of the combustion furnace 1 through exhaust port 15, allowing the flue gas and air to fully contact the catalytic bed 10. The mixed flue gas is then heated by heating block 11, allowing it to undergo full oxidation. The oxidized flue gas enters the flue gas box 3 through the flue gas inlet branch pipe 401, thereby preheating the air in air pipe 6 and raising its temperature. This increases the temperature of the air in the mixing chamber 14. The heated flue gas then enters the inner cavity of the combustion furnace 1 through exhaust port 15, achieving an energy-saving effect.

[0037] Please refer to it again. Figure 2 and Figure 3 As shown, one end of the water inlet pipe 5 passes through the top of the flue gas box 3 and through the partition 27 to extend into the lower inner cavity of the flue gas box 3 and is fixedly connected to the spray pipe 24. Both ends of the spray pipe 24 are fixedly connected to the top of the lower inner cavity of the flue gas box 3. The bottom of the spray pipe 24 is evenly connected to the nozzles 25. Using existing technology, the water pump delivers water from the water tank 2 to the water inlet pipe 5. Preferably, the nozzles 25 are mist-shaped.

[0038] Please refer to it again. Figure 2 and Figure 4As shown, an adsorption plate 16 is installed at the bottom of the lower inner cavity of the flue gas box 3. Sliding strips 19 are fixedly installed on both sides of the adsorption plate 16. Sliding grooves 23 are installed to match the sliding strips 19. The sliding grooves 23 are fixedly installed on both sides of the bottom of the lower inner cavity of the flue gas box 3. A drawer plate 17 is fixedly installed at one end of the adsorption plate 16. The four sides of the drawer plate 17 are larger than the four sides of the adsorption plate 16, which further enhances the sealing performance of the adsorption plate 16 inside the flue gas box 3. An insert strip 18 is fixedly installed on one side of the drawer plate 17. A handle 20 and a piston port 21 are fixedly installed on the other side of the drawer plate 17. In order to further increase the sealing performance inside the flue gas box 3, rubber is installed around the insert strip 18. A groove 22 that matches the insert strip 18 is opened on the side of the flue gas box 3 opposite to the insert strip 18.

[0039] Impurities in the gas are drawn into the adsorption plate 16 by the mist nozzle 25 under the action of water, further removing impurities from the flue gas. The water pump draws out the sewage in the flue gas box 3 through the drain pipe 26. The drawer plate 17 facilitates the installation and disassembly of the adsorption plate 16, achieving further filtration of impurities in the flue gas. The adsorption plate 16 is easy to disassemble and clean, avoiding clogging.

[0040] To facilitate understanding of the above-mentioned technical solution of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below: When this utility model is used, the air pump sends air into the combustion furnace 1 through the air pipe 6, and at the same time, the flue gas pipe 8 sends flue gas into the combustion furnace 1. When the air and flue gas enter the inner cavity of the mixing box 14, the agitator 13, due to the setting of the rotating shaft 12, will cause the air and flue gas to be initially mixed, and then flow out from multiple exhaust ports 15, so that the mixed gas is dispersed into the space above the combustion furnace 1, making... Air and flue gas are thoroughly mixed and flow evenly to the catalytic bed 10. The flue gas, air and catalytic bed 10 are in full contact and are oxidized by heating by the heating block 11. The oxidized flue gas enters the upper inner cavity of the flue gas box 3 through the flue gas inlet branch pipe 401. The residual heat of the flue gas preheats the air pipe 6, further achieving the energy-saving effect. Then, under the action of the guide plate, the flue gas in the upper inner cavity of the flue gas box 3 flows into the lower inner cavity of the flue gas box 3 through the air outlet 28; this avoids the water in the nozzle 25 from lowering the temperature of the flue gas in the flue gas box 3.

[0041] Water is then pumped from water tank 2 to spray nozzle 24, and mist nozzle 25 causes impurities in the gas to fall into adsorption plate 16 under the action of water; exhaust pipe 7 is opened to allow the flue gas to flow out after oxidation without impurities; water pump is turned on to extract the sewage in flue gas box 3 from drain pipe 26.

[0042] When it is necessary to clean and wash the adsorption plate 16, the piston port 21 is opened and the drawer plate 17 is pulled to replace the adsorption plate 16, which facilitates the installation and removal of the adsorption plate 16.

[0043] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, all of which should fall within the protection scope of this utility model.

Claims

1. A combined catalytic combustion flue gas treatment device, comprising a combustion furnace (1) and a mixing box (14), wherein the mixing box (14) is fixedly installed at the bottom of the inner cavity of the combustion furnace (1), characterized in that: A flue gas pipe (8) is installed on the outer side wall of the bottom of one end of the combustion furnace (1), and one end of the flue gas inlet branch pipe (401) is installed on the top of the combustion furnace (1). The other end of the flue gas inlet branch pipe (401) is connected to the flue gas inlet main pipe (4), and one end of the flue gas inlet main pipe (4) extends into the top of the flue gas box (3). A water tank (2) is fixedly installed at one end of the flue gas box (3). One end of a water inlet pipe (5) is installed on the top outer wall of the water tank (2), and the other end of the water inlet pipe (5) is connected to the top of the flue gas box (3). An air pipe (6) is installed on one side wall of the flue gas box (3).

2. The combined catalytic combustion flue gas treatment device according to claim 1, characterized in that: A catalytic bed (10) is installed in the upper part of the inner cavity of the combustion furnace (1), and a heating block (11) is fixedly installed on the inner wall of the combustion furnace (1) at the catalytic bed (10).

3. The combined catalytic combustion flue gas treatment device according to claim 1, characterized in that: An exhaust pipe (7) and a drain pipe (26) are also installed on the outer wall of the flue gas box (3) on the same side as the air pipe (6). The drain pipe (26) extends into the bottom of the inner cavity of the flue gas box (3).

4. The combined catalytic combustion flue gas treatment device according to claim 3, characterized in that: A partition (27) is fixedly installed in the middle of the inner cavity of the flue gas box (3). The upper part of the partition (27) has evenly spaced air vents (28). The partition (27) divides the flue gas box (3) into an upper inner cavity and a lower inner cavity.

5. The combined catalytic combustion flue gas treatment device according to claim 3, characterized in that: One end of the air pipe (6) is fixedly inserted through the upper inner cavity of the flue gas box (3), and the other end extends into the inner cavity of the mixing box (14); one end of the flue gas pipe (8) is connected to the waste flue gas generated in the industry, and the other end of the flue gas pipe (8) is fixedly inserted through the combustion furnace (1) and extends into the inner cavity of the mixing box (14).

6. The combined catalytic combustion flue gas treatment device according to claim 1, characterized in that: The mixing box (14) has an exhaust port (15) at its upper part; a motor (9) is fixedly installed on the outer wall of the combustion furnace (1) on the same side as the flue gas pipe (8). The bearing of the motor (9) passes through the combustion furnace (1) and is fixedly connected to the rotating shaft (12). The rotating shaft (12) passes through one side of the mixing box (14). A disturbance plate (13) is fixedly connected to the rotating shaft (12). The disturbance plate (13) is wrapped around the rotating shaft (12) in an S-shape.

7. The combined catalytic combustion flue gas treatment device according to claim 1, characterized in that: One end of the water inlet pipe (5) passes through the top of the flue gas box (3) and through the partition (27) and extends into the lower inner cavity of the flue gas box (3) to be fixedly connected to the spray pipe (24). Both ends of the spray pipe (24) are fixedly connected to the top of the lower inner cavity of the flue gas box (3), and the bottom of the spray pipe (24) is evenly connected to the nozzle (25).

8. The combined catalytic combustion flue gas treatment device according to claim 1, characterized in that: An adsorption plate (16) is installed in the lower part of the inner cavity of the flue gas box (3). Sliding strips (19) are fixedly installed on both sides of the adsorption plate (16). Sliding grooves (23) are installed to match the sliding strips (19). The sliding grooves (23) are fixedly installed on both sides of the inner cavity of the flue gas box (3).

9. The combined catalytic combustion flue gas treatment device according to claim 8, characterized in that: A drawer plate (17) is fixedly installed at one end of the adsorption plate (16), and the four sides of the drawer plate (17) are larger than the four sides of the adsorption plate (16).

10. The combined catalytic combustion flue gas treatment device according to claim 9, characterized in that: A strip (18) is fixedly installed on one side of the drawer panel (17), and a handle (20) and a piston port (21) are fixedly installed on the other side of the drawer panel (17). A groove (22) that matches the strip (18) is opened on the side of the flue box (3) opposite to the strip (18). Rubber is installed around the strip (18).

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