Efficient low-consumption catalytic combustion equipment

Abstract

The utility model discloses efficient low-consumption catalytic combustion equipment, and relates to the technical field of waste gas treatment accessory devices. The top end and the bottom end of the box body are connected with an air inlet pipe and an exhaust pipe respectively, the inner layers of the air inlet pipe and the exhaust pipe are made of polytetrafluoroethylene materials, the outer layers of the air inlet pipe and the exhaust pipe are made of stainless steel thin plates, a supporting plate is connected into the box body, the top end of the supporting plate is connected with a catalytic combustion bed, and a heat exchange pipe is arranged above the catalytic combustion bed. The air inlet pipe and the exhaust pipe are arranged, the air inlet pipe and the exhaust pipe are of a composite structure with the inner layer made of the polytetrafluoroethylene material and the outer layer made of the stainless steel sheet material, it is guaranteed that the inner wall of the air pipe is not eroded, the good gas conveying performance is maintained, and the stainless steel sheet material of the outer layer can provide stable structural support for the air pipe; and the air pipe is prevented from being deformed or damaged due to factors such as external force and internal pressure in the using process.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment accessory devices, and specifically relates to a high-efficiency and low-consumption catalytic combustion device. Background Art

[0002] A catalytic combustion device refers to a device or equipment that burns under the action of a catalyst. The working principle of the catalytic combustion device is to use a catalyst to make the organic waste gas burn flamelessly at a lower ignition temperature, so that the organic waste gas is decomposed into non-toxic carbon dioxide and water vapor.

[0003] The Chinese patent publication number CN210740430U discloses a high-efficiency, low-consumption catalytic combustion device. When in use, the air is pressurized and sucked by a blower to allow the air to enter the heat exchange tube. The heat in the working chamber is absorbed by the heat exchange tube, so that the air is preheated in advance. The preheated air passes through the first connecting tube and the second connecting tube and then through the blower tube into the catalytic combustion bed, so that the harmful combustible gas in the exhaust gas can be fully contacted with oxygen during combustion, making it burn more thoroughly. The preheated air will not affect the temperature of the catalytic combustion bed when entering the catalytic combustion bed, so that the harmful gas in the exhaust gas to be treated can be burned more thoroughly, reducing harmful gas emissions, and being highly efficient and low-consumption. However, the air inlet and exhaust channels are welded and formed by galvanized plates. Although they have the advantages of stable structure and strong corrosion resistance, the galvanized plates themselves have a certain service life limit. After long-term use, facing some complex and harsh working conditions (such as high humidity, strong acid and alkali environment, etc.), the galvanized layer may be corroded and damaged, thereby affecting the overall performance of the channel.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a high-efficiency and low-consumption catalytic combustion device, and solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A high-efficiency and low-consumption catalytic combustion equipment comprises: a box body, the top and bottom ends of the box body are respectively connected to an air inlet pipe and an exhaust pipe, the inner layers of the air inlet pipe and the exhaust pipe are made of polytetrafluoroethylene, and the outer layers of the air inlet pipe and the exhaust pipe are made of stainless steel thin plates, a support plate is connected to the inside of the box body, the top of the support plate is connected to a catalytic combustion bed, a heat exchange pipe is provided above the catalytic combustion bed, the left end connection port of the heat exchange pipe is connected to an air suction pipe, the right end connection port of the heat exchange pipe is connected to a first connecting pipe, the first connecting pipe is connected to a blower, one end of the blower is connected to a second connecting pipe, and the second connecting pipe passes through the support plate and the catalytic combustion bed.

[0008] Optionally, the heat exchange tube is located inside the box and above the catalytic combustion bed, and the heat exchange tube is spiral.

[0009] Optionally, the air suction pipe passes through the side wall of the box and is connected to the heat exchange pipe, and the first connecting pipe passes through the side wall of the box and is connected to the heat exchange pipe.

[0010] Optionally, a plurality of through holes are provided on the surface of the support plate.

[0011] Optionally, the second connecting pipe is in an "L" shape, with its longitudinal end passing through the support plate and the catalytic combustion bed in sequence, and its transverse end passing through the side wall of the box to be connected to the blower.

[0012] Optionally, a section of the surface of the second connecting pipe that passes through the catalytic combustion bed is provided with a plurality of through holes, and a section of the second connecting pipe that is connected to the blower is connected to a muffler.

[0013] Optionally, the muffler is sleeved on the surface of the second connecting pipe, and a sound-absorbing layer is provided inside the muffler.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0015] 1. The air inlet and exhaust pipes are equipped with a composite structure with an inner layer of polytetrafluoroethylene and an outer layer of stainless steel sheet to ensure that the inner wall of the air duct is not corroded and maintain good gas transmission performance. The outer layer of stainless steel sheet can provide a stable structural support for the air duct to prevent deformation or damage due to external forces, internal pressure and other factors during use.

[0016] 2. Heat exchange tubes are installed to preheat the incoming air using the heat from the working chamber of the box. Their spiral design increases the contact area with the air and the duration of the heat exchange, allowing the air to fully absorb the heat and enter the catalytic combustion bed as preheated air. When the preheated air mixes with the harmful combustible gases in the exhaust, the two come into contact more fully, creating more favorable conditions for the combustion reaction, thereby improving the efficiency of the entire combustion process and ensuring that the harmful combustible gases are more thoroughly oxidized.

[0017] 3. By installing a silencer, the sound-absorbing layer inside the silencer (such as porous sound-absorbing cotton, etc.) can effectively reduce the noise energy generated by the blower operation through acoustic principles such as absorption, reflection and scattering, and greatly reduce the noise intensity transmitted from the equipment.

[0018] The specific implementation of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] In the picture:

[0021] Figure 1 Schematic diagram of the overall structure;

[0022] Figure 2 Schematic diagram of the internal structure of the box;

[0023] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4 Schematic diagram of the cross-sectional structure of the muffler.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1. Box body; 2. Air inlet pipe; 3. Exhaust pipe; 4. Blower; 5. First connecting pipe; 6. Suction pipe; 7. Heat exchange pipe; 8. Catalytic combustion bed; 9. Second connecting pipe; 10. Support plate; 11. Muffler.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] See also Figure 1-4 As shown, in this embodiment, a high-efficiency and low-consumption catalytic combustion device is provided, including: a box body 1, the top and bottom ends of the box body 1 are respectively connected to an air inlet pipe 2 and an exhaust pipe 3, the inner layers of the air inlet pipe 2 and the exhaust pipe 3 are made of polytetrafluoroethylene, and the outer layers of the air inlet pipe 2 and the exhaust pipe 3 are made of stainless steel thin plates, a support plate 10 is connected to the inside of the box body 1, the top of the support plate 10 is connected to a catalytic combustion bed 8, a heat exchange pipe 7 is provided above the catalytic combustion bed 8, the left end connection port of the heat exchange pipe 7 is connected to an air suction pipe 6, the right end connection port of the heat exchange pipe 7 is connected to a first connecting pipe 5, the first connecting pipe 5 is connected to a blower 4, one end of the blower 4 is connected to a second connecting pipe 9, and the second connecting pipe 9 passes through the support plate 10 and the catalytic combustion bed 8.

[0030] The box body 1 is the outer shell of the entire catalytic combustion equipment, which plays the role of accommodating and protecting the internal components. The air inlet pipe 2 is located at the top of the box body 1. Its function is to introduce the exhaust gas containing harmful combustible gas into the interior of the box body 1 so that the exhaust gas can enter the subsequent treatment link; the exhaust pipe 3 is set at the bottom of the box body 1 to discharge the gas that has been converted into relatively harmless gas after catalytic combustion treatment, so that the treated gas can be safely discharged into the external environment. The air inlet pipe 2 and the exhaust pipe 3 adopt a composite structure with an inner layer of polytetrafluoroethylene and an outer layer of stainless steel sheet. Polytetrafluoroethylene has extremely excellent chemical stability and can withstand corrosion from strong acids, strong alkalis and various organic solvents. Even in the face of complex and harsh exhaust gas compositions, The outer layer of stainless steel sheet material has high strength and rigidity, which can provide a stable structural support for the air duct and prevent the air duct from being deformed or damaged due to external forces, internal pressure and other factors during use. At the same time, stainless steel itself has a certain corrosion resistance, which further enhances the overall durability of the air duct. The support plate 10 ensures that the catalytic combustion bed 8 can maintain a fixed position during the operation of the equipment and will not shift or shake due to vibration, airflow impact and other factors, thereby ensuring the normal and stable development of the exhaust gas treatment process. The catalytic combustion bed 8 contains a specific catalyst. When the exhaust gas containing harmful combustible gases is mixed with the exhaust gas, the exhaust gas will not be damaged. After the preheated and transported air enters the catalytic combustion bed 8 together, under the action of the catalyst, the harmful combustible gas can undergo an efficient oxidation reaction with the oxygen in the air under appropriate temperature, gas concentration and other conditions, converting the harmful combustible gas into harmless substances, thereby achieving the purpose of exhaust gas purification. The heat exchange tube 7 uses the heat in the working chamber of the box body 1 (such as the heat remaining from the previous combustion process, etc.) to preheat the air entering from the suction pipe 6. When the air flows through the heat exchange tube 7, it absorbs the heat transferred from the tube wall, causing the air temperature to rise and become preheated air, which is ready for subsequent entry into the catalytic combustion bed 8 to fully contact with the harmful combustible gas and burn efficiently, which helps to improve combustion efficiency and reduce energy consumption. Source consumption, to achieve the goal of high-efficiency and low-consumption operation of the equipment. The function of the suction pipe 6 is to guide the outside air into the heat exchange tube 7, to provide an air source for the subsequent air preheating link, so that the air can smoothly enter the equipment to participate in the entire exhaust gas treatment process. The blower 4 generates a certain air pressure difference in the equipment through its own operation, thereby realizing the pressurized suction function of the air. First, it can inhale the air preheated by the heat exchange tube 7, and then continue to transport the air through the second connecting pipe 9, so that it passes through the support plate 10 and the catalytic combustion bed 8, ensuring that the preheated air can accurately enter the catalytic combustion bed 8 according to the predetermined path, and fully mix with the harmful combustible gas in the exhaust gas, to ensure the smooth progress of the catalytic combustion reaction.

[0031] In this embodiment, the heat exchange tube 7 is located inside the box body 1 and is also located above the catalytic combustion bed 8. The heat exchange tube 7 is spiral-shaped, the suction tube 6 passes through the side wall of the box body 1 and is connected to the heat exchange tube 7, the first connecting tube 5 passes through the side wall of the box body 1 and is connected to the heat exchange tube 7, a plurality of through holes are provided on the surface of the support plate 10, the second connecting tube 9 is "L"-shaped, and its longitudinal end passes through the support plate 10 and the catalytic combustion bed 8 in sequence, and its transverse end passes through the side wall of the box body 1 and is connected to the blower 4. A plurality of through holes are provided on the surface of a section of the second connecting tube 9 passing through the catalytic combustion bed 8, and a silencer 11 is connected to the section of the second connecting tube 9 connected to the blower 4. The silencer 11 is sleeved on the surface of the second connecting tube 9, and a sound-absorbing layer is provided inside the silencer 11.

[0032] The heat exchange tube 7 is located inside the box body 1 and above the catalytic combustion bed 8, which is beneficial for it to fully utilize the heat in the working chamber of the box body 1 to preheat the air. The heat in the working chamber (such as the residual heat from the previous combustion reaction, etc.) will accumulate around it, and the heat exchange tube 7 above it can better contact it and exchange heat. The spiral shape increases the length and surface area of ​​the heat exchange tube 7 in a limited space, so that the air has more time and a larger contact area to exchange heat with the tube wall when flowing in the tube, so that it can absorb heat more fully, improve the preheating effect, and ensure that the air entering the catalytic combustion bed 8 can reach a more ideal preheating temperature, which helps the subsequent catalytic combustion reaction to proceed more efficiently. The air intake pipe 6 passes through the side wall of the box body 1 and is connected to the heat exchange pipe 7. The function of the air intake pipe 6 is to introduce air from the outside of the box body 1 and pass through the side wall of the box body 1. The method can ensure that the outside air enters the heat exchange tube 7 smoothly, starts the first step of the air entering the equipment to participate in the exhaust gas treatment process, and provides the necessary air source for subsequent preheating and catalytic combustion. The first connecting pipe 5 also passes through the side wall of the box body 1 and is connected to the heat exchange tube 7. It plays a connecting role in the air transportation and heat exchange system of the equipment. After the heat exchange tube 7 completes the preheating of the air, the preheated air is transported out through the first connecting pipe 5 and sent to the subsequent blower 4 connected thereto, thereby realizing the flow of air in the entire equipment according to a predetermined path. A plurality of through holes are provided on the surface of the support plate 10. On the one hand, when the exhaust gas enters the box body 1, it will diffuse in the box body 1. The existence of the through holes can enable the exhaust gas to flow more smoothly in the working chamber of the box body 1, ensuring that the exhaust gas can be more evenly distributed and enter the area where the catalytic combustion bed 8 is located;On the other hand, when the air is transported through the second connecting pipe 9 and passes through the support plate 10 and the catalytic combustion bed 8, the through holes also help the air to be better dispersed when passing through, so that the air can enter the catalytic combustion bed 8 more evenly and be fully mixed with the harmful combustible gases in the exhaust gas, thereby ensuring the comprehensive and efficient development of the catalytic combustion reaction. The second connecting pipe 9 is provided with a plurality of through holes on a section of the surface of the catalytic combustion bed 8. The presence of these through holes can make the air transported through the second connecting pipe 9 more evenly dispersed when entering the catalytic combustion bed 8. The air flows out from these through holes, avoiding a centralized air outlet method, so that the air can be evenly distributed in various parts of the catalytic combustion bed 8 and mixed with the exhaust gas. The harmful combustible gases in the exhaust are fully mixed over a larger area, which helps improve the efficiency of catalytic combustion and allows the harmful combustible gases in the exhaust to be more thoroughly oxidized. When the airflow passes through the second connecting pipe 9, it will first enter the interior of the muffler 11. The sound-absorbing layer inside the muffler 11 is usually composed of some materials with sound-absorbing properties (such as porous sound-absorbing cotton). These materials can effectively reduce the noise energy generated by the operation of the blower 4 through acoustic principles such as absorption, reflection, and scattering, thereby significantly reducing the noise intensity transmitted from the equipment. This meets the requirements of the equipment in different operating environments (especially places with high noise requirements) and improves the environmental friendliness and applicability of the equipment.

[0033] Working principle:

[0034] The exhaust gas containing harmful flammable gas enters the box body 1 through the air inlet pipe 2 located at the top of the box body 1. At the same time, the outside air enters the equipment through the air suction pipe 6. The air suction pipe 6 passes through the side wall of the box body 1 and is connected to the heat exchange pipe 7. This penetration method ensures that the outside air can smoothly enter the heat exchange pipe 7, providing a source for subsequent air preheating and the entire exhaust gas treatment process.

[0035] The air entering the heat exchange tube 7 begins to undergo a preheating process. As the air flows through the heat exchange tube 7, it has more time and a larger contact area to exchange heat with the tube wall, fully absorbing the heat transferred from the tube wall, raising its own temperature and becoming preheated air. This prepares the air for subsequent contact with the harmful combustible gas in the catalytic combustion bed 8 and efficient combustion, helping to improve combustion efficiency and reduce energy consumption.

[0036] The air preheated by the heat exchange tube 7 is transported outwards through the first connecting tube 5 connected at the right end. The first connecting tube 5 passes through the side wall of the box body 1 and is connected to the heat exchange tube 7, which plays the role of sending the preheated air in the heat exchange tube 7 to subsequent components, ensuring that the air flows according to the predetermined path. The first connecting tube 5 transports the air to the blower 4. The blower 4 generates an air pressure difference in the equipment through its own operation, thereby realizing the pressurized suction function of the air. After the preheated air is sucked in, it is further transported through the "L"-shaped second connecting tube 9 connected to it. The longitudinal end of the second connecting tube 9 passes through the support plate 10 and the catalytic combustion bed 8 in turn, and its transverse end passes through the side wall of the box body 1 and is connected to the blower 4, and a plurality of through holes are opened on a surface section passing through the catalytic combustion bed 8. When the air passes through here, it will enter the interior of the catalytic combustion bed 8 from these through holes evenly and dispersedly, avoiding There is no need for concentrated air outlet, so that the air can be evenly distributed in various parts of the catalytic combustion bed 8, which is more conducive to sufficient mixing with the harmful combustible gas in the exhaust gas. In the catalytic combustion bed 8, the exhaust gas containing harmful combustible gas previously introduced is fully mixed with the preheated air transported in through the above process. Since the catalytic combustion bed 8 contains a specific catalyst, under suitable temperature, gas concentration and other conditions, the harmful combustible gas can undergo an efficient oxidation reaction with the oxygen in the air under the action of the catalyst, and the harmful combustible gas is converted into harmless substances, thereby achieving the purpose of exhaust gas purification. After catalytic combustion treatment, it has been converted into a relatively harmless gas and discharged to the external environment through the exhaust pipe 3 located at the bottom end of the box body 1. The exhaust pipe 3 also adopts a composite structure of an inner layer of polytetrafluoroethylene and an outer layer of stainless steel sheet to ensure stable and safe discharge of the gas.

[0037] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the guidance of the present invention, and any technical solutions that are the same or similar to those of the present invention, fall within the scope of protection of the present invention. The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

Claims

1. A high-efficiency and low-consumption catalytic combustion device, comprising: The box body (1) is characterized in that the top and bottom ends of the box body (1) are respectively connected to an air inlet pipe (2) and an exhaust pipe (3), the inner layers of the air inlet pipe (2) and the exhaust pipe (3) are both made of polytetrafluoroethylene, and the outer layers of the air inlet pipe (2) and the exhaust pipe (3) are both made of stainless steel thin plates; The box body (1) is internally connected to a support plate (10), the top of the support plate (10) is connected to a catalytic combustion bed (8), a heat exchange tube (7) is provided above the catalytic combustion bed (8), the left end connection port of the heat exchange tube (7) is connected to an air suction tube (6), the right end connection port of the heat exchange tube (7) is connected to a first connection tube (5), the first connection tube (5) is connected to a blower (4), one end of the blower (4) is connected to a second connection tube (9), and the second connection tube (9) passes through the support plate (10) and the catalytic combustion bed (8).

2. The high-efficiency and low-consumption catalytic combustion equipment according to claim 1, characterized in that: The heat exchange tube (7) is located inside the box (1) and above the catalytic combustion bed (8). The heat exchange tube (7) is spiral-shaped.

3. The high-efficiency and low-consumption catalytic combustion equipment according to claim 1, characterized in that: The air suction pipe (6) passes through the side wall of the box body (1) and is connected to the heat exchange pipe (7), and the first connecting pipe (5) passes through the side wall of the box body (1) and is connected to the heat exchange pipe (7).

4. The high-efficiency and low-consumption catalytic combustion equipment according to claim 1, characterized in that: A plurality of through holes are provided on the surface of the support plate (10).

5. The high-efficiency and low-consumption catalytic combustion equipment according to claim 1, characterized in that: The second connecting pipe (9) is in an "L" shape, with its longitudinal end passing through the support plate (10) and the catalytic combustion bed (8) in sequence, and its transverse end passing through the side wall of the box body (1) and connected to the blower (4).

6. The high-efficiency and low-consumption catalytic combustion equipment according to claim 5, characterized in that: A section of the surface of the second connecting pipe (9) that passes through the catalytic combustion bed (8) is provided with a plurality of through holes, and a section of the second connecting pipe (9) that is connected to the blower (4) is connected to a muffler (11).

7. The high-efficiency, low-consumption catalytic combustion equipment according to claim 6, characterized in that: The muffler (11) is sleeved on the surface of the second connecting pipe (9), and a sound absorbing layer is provided inside the muffler (11).

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