Environment-friendly catalytic combustion waste gas treatment device
By using a ventilation disc in the catalytic combustion exhaust gas treatment device to disperse the exhaust gas and monitor the catalyst liquid level in real time, the problem of high corrosion and maintenance costs of the showerhead is solved, and the service life and combustion efficiency of the device are improved.
Patent Information
- Application Number
- CN202323340889.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-08
AI Technical Summary
The spray heads in existing catalytic combustion exhaust gas treatment devices are susceptible to corrosion in high-temperature acidic environments, resulting in channel blockage and regular maintenance requirements, increasing the cost of accessories and consumables.
An environmentally friendly catalytic combustion exhaust gas treatment device is designed, and the exhaust gas is dispersed into the catalyst using a ventilation tray to avoid contact with the acidic environment. The catalyst liquid level is monitored in real time through the observation window to ensure sufficient combustion and reduce the risk of corrosion.
The service life of the device is extended, the cost of accessories and consumables is reduced, and the effective treatment of gas is achieved through sufficient combustion and liquid level monitoring.
Smart Images
Figure CN222210346U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy conservation and environmental protection, in particular to an environmentally friendly catalytic combustion waste gas treatment device. Background Art
[0002] Catalytic combustion is a purification method that uses a catalyst to oxidize and decompose combustible substances in exhaust gas at a relatively low temperature. Therefore, catalytic combustion is also called catalytic chemical conversion. Since the catalyst accelerates the process of oxidation and decomposition, most hydrocarbons can be completely oxidized by the catalyst at a temperature of 300 to 450 degrees Celsius. Compared with thermal combustion, catalytic combustion has the advantages of less auxiliary fuel required, low energy consumption, and small size of equipment and facilities.
[0003] Chinese patent CN202220416098.9 discloses an environmentally friendly catalytic combustion exhaust gas treatment device including an incineration box, the incineration box also includes a catalytic liquid storage box, a spray combustion box and a filter port, the catalytic liquid storage box is arranged above the spray combustion box, the top surface of the spray combustion box is fixedly connected to the bottom surface of the catalytic liquid storage box, the filter port is arranged through the top surface of the spray combustion box, the bottom surface of the catalytic liquid storage box is also provided with a spray pipe extending downward, the spray pipe penetrates the bottom surface of the catalytic liquid storage box and the top surface of the spray combustion box and is arranged on the inner surface of the top surface of the spray combustion box, and the side of the spray combustion box is also penetrated with an air inlet.
[0004] However, the temperature inside the combustion box can reach 200°C-400°C during the catalytic combustion process, and the gases produced by the combustion mix with water vapor to produce an acidic environment. As a result, the spray heads installed inside the combustion box are susceptible to acid corrosion in a high-temperature environment, causing the spray channels to become clogged. The spray heads need to be regularly maintained and replaced, and the cost of accessories and consumables is high. Utility Model Content
[0005] The purpose of the utility model is to provide an environmentally friendly catalytic combustion exhaust gas treatment device, which solves the problem that the spray head arranged inside the combustion box is easily subject to acid corrosion, resulting in blockage of the spray channel, and the need for regular maintenance and replacement of the spray head, and the high cost of accessories and consumables.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an environmentally friendly catalytic combustion exhaust gas treatment device, comprising a combustion box, an exhaust pipe is provided at the center of the top of the combustion box, an injection pipe is fixedly connected to the upper side wall of the combustion box, a discharge pipe is provided at the center of the bottom of the combustion box, a one-way valve is provided on the discharge pipe, an air inlet pipe is provided on the side wall of the discharge pipe, a vent plate is provided at the bottom inner side of the combustion box, vent holes are opened on the vent plate, and the bottom of the vent plate is connected to the top of the discharge pipe.
[0007] Preferably, the combustion box is in an overall cylindrical structure, and the top side wall of the combustion box is in an upwardly tightened frustum structure, and the top of the exhaust pipe is provided with a flange for easy installation.
[0008] Preferably, the liquid injection pipe is fixedly connected to the upper inclined side wall of the combustion box, and a liquid inlet connected to the liquid injection pipe is opened on the inclined side wall of the combustion box. A sealing cover plate is rotatably connected to the top opening of the liquid injection pipe, and the sealing cover plate can be sealedly connected to the top channel port of the liquid injection pipe.
[0009] Preferably, the air inlet pipe is an L-shaped pipe structure, and one end of the air inlet pipe is vertically connected to the side wall of the discharge pipe body, and a flange for easy installation is provided at the end of the air inlet pipe away from the discharge pipe.
[0010] Preferably, the one-way valve is located below the connection between the discharge pipe and the air inlet pipe, and a valve handle is provided on one side of the one-way valve.
[0011] Preferably, the ventilation plate is in a truncated cone-shaped structure as a whole, and a cavity is provided inside the ventilation plate. An air inlet is provided at the center of the bottom of the ventilation plate, and the top of the discharge pipe passes through the bottom side wall of the combustion box and is connected to the air inlet.
[0012] Preferably, a plurality of ventilation holes are provided, and the plurality of ventilation holes are distributed in a circular array on the top and the inclined side wall of the ventilation disk.
[0013] Preferably, an observation window is provided on the side wall of the combustion box, and the side wall of the observation window is sealed and connected with a transparent polymer material.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0015] 1. The utility model disperses the injected exhaust gas through the ventilation plate, so that the exhaust gas is fully in contact with the catalyst, ensuring that the exhaust gas is fully burned inside the combustion box. The ventilation plate is in a state of being submerged in the catalyst as a whole and will not be exposed to the acidic environment generated by the combustion of the exhaust gas, thus avoiding corrosion, thereby increasing the service life of the device and reducing the cost of accessories and consumables.
[0016] 2. The utility model monitors the catalyst liquid level inside the combustion box in real time through the observation window, which is convenient for timely replenishment. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of the combustion box of the utility model;
[0019] Figure 3 It is a schematic cross-sectional view of the ventilation disc structure of the utility model.
[0020] In the figure: 1. Combustion box; 2. Exhaust pipe; 3. Discharge pipe; 4. Inlet pipe; 5. One-way valve; 6. Valve handle; 7. Liquid injection pipeline; 8. Sealing cover; 9. Observation window; 10. Vent disc; 11. Liquid inlet; 12. Air inlet; 13. Vent hole. DETAILED DESCRIPTION
[0021] See also Figure 1-Figure 3 An environmentally friendly catalytic combustion exhaust gas treatment device includes a combustion box 1, an exhaust pipe 2 is provided at the center of the top of the combustion box 1, a liquid injection pipe 7 is fixedly connected to the upper side wall of the combustion box 1, a discharge pipe 3 is provided at the center of the bottom of the combustion box 1, a one-way valve 5 is provided on the discharge pipe 3, an air inlet pipe 4 is provided on the side wall of the discharge pipe 3, a ventilation plate 10 is provided at the bottom inside the combustion box 1, a ventilation hole 13 is opened on the ventilation plate 10, and the bottom of the ventilation plate 10 is connected to the top of the discharge pipe 3.
[0022] Catalyst is injected into the combustion box 1, and the exhaust gas is filtered and mixed and then injected into the ventilation disk 10 through the intake pipe 4, dispersed by the ventilation disk 10, and then fully mixed with the catalyst and rise to the upper layer of the inner cavity of the combustion box 1 to burn.
[0023] Reference Figure 1 In a further embodiment, the combustion box 1 is in a cylindrical structure as a whole, and the top side wall of the combustion box 1 is in an upwardly tightened frustum structure, and the top of the exhaust pipe 2 is provided with a flange for easy installation.
[0024] The flange at the top of the exhaust pipe 2 is connected to the gas pipeline, and the carbon dioxide and water vapor produced by the combustion are introduced into the subsequent condensation equipment for separation, so as to realize the recycling of water resources.
[0025] Reference Figure 1 In a further embodiment, the liquid injection pipe 7 is fixedly connected to the upper inclined side wall of the combustion box 1, and a liquid inlet 11 connected to the liquid injection pipe 7 is opened on the inclined side wall of the combustion box 1. A sealing cover plate 8 is rotatably connected to the top opening of the liquid injection pipe 7, and the sealing cover plate 8 and the top channel port of the liquid injection pipe 7 can be sealed.
[0026] The liquid injection pipe 7 is provided to facilitate the addition of catalyst into the combustion box 1, and the sealing cover plate 8 is provided to seal the top port of the liquid injection pipe 7 to ensure the air tightness of the combustion box 1 during the combustion process and avoid exhaust gas leakage.
[0027] Reference Figure 1-Figure 2 In a further embodiment, the air inlet pipe 4 is an L-shaped pipe structure, and one end of the air inlet pipe 4 is vertically connected to the side wall of the discharge pipe 3, and a flange for convenient installation is provided at the end of the air inlet pipe 4 away from the discharge pipe 3.
[0028] The L-shaped intake pipe 4 can prevent the catalyst from flowing back into the exhaust gas filter device connected to the intake pipe 4 .
[0029] Reference Figure 1 In a further embodiment, the one-way valve 5 is located below the connection between the discharge pipe 3 and the air inlet pipe 4, and a valve handle 6 is provided on one side of the one-way valve 5.
[0030] The valve handle 6 is provided to facilitate the operator to open and close the one-way valve 5 to complete the replacement of the catalyst and the cleaning of the interior of the combustion box 1 .
[0031] Reference Figure 2-Figure 3 In a further embodiment, the ventilation plate 10 is in a truncated cone-shaped structure as a whole, and a cavity is provided inside the ventilation plate 10. An air inlet 12 is provided at the center of the bottom of the ventilation plate 10, and the top of the discharge pipe 3 passes through the bottom side wall of the combustion box 1 and is connected to the air inlet 12.
[0032] By providing a cavity inside the vent disc 10 , when gas enters, the hydraulic pressure decreases, and the bubbles generated by the gas injection are naturally dispersed into the entire inner cavity of the vent disc 10 .
[0033] Reference Figure 3 In a further embodiment, a plurality of vent holes 13 are provided, and the plurality of vent holes 13 are distributed in a circular array on the top and the inclined side wall of the vent plate 10 .
[0034] By providing a plurality of vent holes 13 on the top and side wall of the vent plate 10, the bubbles in the internal cavity of the vent plate 10 are evenly dispersed and raised, thereby increasing the contact area between the gas and the catalyst, allowing the two to be fully mixed and the gas to be fully burned.
[0035] Reference Figure 1 In a further embodiment, an observation window 9 is provided on the side wall of the combustion box 1, and the side wall of the observation window 9 is sealed and connected with a polymer transparent material.
[0036] The observation window 9 is provided to facilitate observation of the catalyst liquid level inside the combustion box 1 and to compare it with the top of the ventilation disk 10. When the liquid level is not enough to submerge the ventilation disk 10, catalyst is added in time.
[0037] In actual use, the catalyst is injected into the combustion box 1 through the injection pipe 7 until the catalyst submerges the ventilation disk 10 and reaches a certain depth. The exhaust gas is filtered and mixed with air, and then injected into the internal cavity of the ventilation disk 10 through the intake pipe 4 and the discharge pipe 3. Then, it is dispersed by a number of ventilation holes 13 on the ventilation disk 10 to ensure that the gas and the catalyst are fully mixed, and then rise to the upper layer of the inner cavity of the combustion box 1. An igniter is provided inside the combustion box 1. After the gas is fully burned, the generated carbon dioxide and water vapor rise and are introduced into the subsequent condensation system through the exhaust pipe 2. During the combustion process, the catalyst liquid level inside the combustion box 1 can be observed in real time through the observation window 9. When the liquid level cannot submerge the ventilation disk 10, the gas injection is suspended and the sealing cover 8 is opened to replenish the catalyst.
[0038] In summary: this environmentally friendly catalytic combustion exhaust gas treatment device disperses the injected exhaust gas through the ventilation plate 10, so that the exhaust gas is fully in contact with the catalyst, ensuring that the exhaust gas is fully burned inside the combustion box, and the ventilation plate 10 is in a state of being submerged in the catalyst as a whole, and will not be exposed to the acidic environment generated after the exhaust gas combustion, thus avoiding corrosion, thereby increasing the service life of the device and reducing the cost of accessories and consumables; the catalyst liquid level height inside the combustion box 1 is monitored in real time through the observation window 9, which is convenient for timely replenishment.
Claims
1. An environmentally friendly catalytic combustion exhaust gas treatment device, comprising a combustion box (1), characterized in that: An exhaust pipe (2) is provided at the center of the top of the combustion box (1); a liquid injection pipe (7) is fixedly connected to the upper side wall of the combustion box (1); a discharge pipe (3) is provided at the center of the bottom of the combustion box (1); a one-way valve (5) is provided on the discharge pipe (3); an air inlet pipe (4) is provided on the side wall of the discharge pipe (3); a vent plate (10) is provided at the bottom of the inner side of the combustion box (1); a vent hole (13) is opened on the vent plate (10); and the bottom of the vent plate (10) is connected to the top of the discharge pipe (3).
2. The environmentally friendly catalytic combustion exhaust gas treatment device according to claim 1 is characterized in that: The combustion box (1) is in the form of a barrel as a whole, and the top side wall of the combustion box (1) is in the form of a frustum structure that is tightened upwards. A flange is provided on the top of the exhaust pipe (2) for easy installation.
3. The environmentally friendly catalytic combustion exhaust gas treatment device according to claim 2 is characterized in that: The liquid injection pipe (7) is fixedly connected to the upper inclined side wall of the combustion box (1); a liquid inlet (11) communicating with the liquid injection pipe (7) is provided on the inclined side wall of the combustion box (1); a sealing cover plate (8) is rotatably connected to the top opening of the liquid injection pipe (7); the sealing cover plate (8) is sealably connected to the top channel port of the liquid injection pipe (7).
4. The environmentally friendly catalytic combustion exhaust gas treatment device according to claim 1 is characterized in that: The air inlet pipe (4) is of an L-shaped pipe structure, and one end of the air inlet pipe (4) is in perpendicular communication with the side wall of the discharge pipe (3). A flange for easy installation is provided at the pipe opening of one end of the air inlet pipe (4) away from the discharge pipe (3).
5. The environmentally friendly catalytic combustion exhaust gas treatment device according to claim 4 is characterized in that: The one-way valve (5) is located below the connection between the discharge pipe (3) and the air inlet pipe (4), and a valve handle (6) is provided on one side of the one-way valve (5).
6. The environmentally friendly catalytic combustion exhaust gas treatment device according to claim 1 is characterized in that: The ventilation plate (10) is in the form of a truncated cone as a whole and has a cavity therein. An air inlet (12) is provided at the center of the bottom of the ventilation plate (10). The top of the discharge pipe (3) passes through the bottom side wall of the combustion box (1) and is in communication with the air inlet (12).
7. The environmentally friendly catalytic combustion exhaust gas treatment device according to claim 1 is characterized in that: A plurality of the vent holes (13) are provided, and the plurality of the vent holes (13) are distributed in a ring array on the top and the inclined side wall of the vent plate (10).
8. The environmentally friendly catalytic combustion exhaust gas treatment device according to claim 1 is characterized by: An observation window (9) is provided on the side wall of the combustion box (1), and a polymer transparent material is sealed to the side wall of the observation window (9).