Waste gas high-temperature treatment device

Abstract

The utility model discloses a waste gas high-temperature treatment device and relates to the field of catalytic combustion furnaces. The device comprises a heat exchange part, a heating part and a catalysis part, the catalysis part comprises an installation frame, a plurality of bearing net plates are installed on the inner side of the installation frame in a sliding mode, a plurality of catalyst blocks are placed on the bearing net plates, and open grooves are formed in the positions, opposite to the positions of the catalyst blocks on each layer, of the two sides of the installation frame. When all the baffles are arranged on the inner side of the second sliding rail, waste gas can smoothly enter each layer of catalyst blocks, full contact between high-concentration carbon monoxide and the catalyst is ensured, and the reaction efficiency is improved; meanwhile, when the concentration of the waste gas is low, the baffle is switched to the third sliding rail so that part of the catalyst layer can be blocked, invalid catalytic site loss and system airflow resistance can be reduced, the usage amount of the catalyst can be matched with the treatment requirement in real time, energy waste caused by redundant reaction is avoided, and the operation cost is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of catalytic combustion furnaces, specifically a high-temperature waste gas treatment device. Background Technology

[0002] Catalytic combustion furnaces are high-efficiency and energy-saving waste gas treatment equipment. They use catalysts to oxidize and decompose organic waste gas into carbon dioxide and water at relatively low temperatures, with a treatment efficiency of over 95%. They are widely used in petrochemical, pharmaceutical, printing, coating and other industries, and have the advantages of high efficiency, energy saving and consumption reduction, and environmental protection without pollution.

[0003] Current catalytic combustion equipment has a problem in treating waste gas. Specifically, traditional catalytic combustion furnaces use a multi-layer fixed catalyst module stacking structure, where waste gas comes into full contact with all catalyst blocks to achieve complete oxidation of carbon monoxide in the waste gas. However, during operation, it cannot selectively react with the required number of catalyst blocks based on the carbon monoxide content in the waste gas. The system cannot match the actual reaction demand by adjusting the amount of catalyst in contact with the waste gas, resulting in excessive catalyst continuously participating in the reaction. This not only causes the loss of ineffective catalytic active sites but also increases system resistance by forcibly passing through redundant catalyst layers, thus increasing the cost of waste gas treatment. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a high-temperature waste gas treatment device to solve the technical problem that waste gas needs to be forced to pass through redundant catalyst layers, which increases system resistance, thereby increasing waste gas treatment costs and reducing treatment efficiency and economy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature waste gas treatment device, comprising a heat exchange section, a heating section, and a catalytic section. The catalytic section includes a mounting frame, on which several supporting mesh plates are slidably mounted. Several catalyst blocks are placed on the supporting mesh plates. Grooves are formed on both sides of the mounting frame, corresponding to the positions of each layer of catalyst blocks. A third slide rail is provided on the outer side of the grooves. A partition is provided between the heating section and the catalytic section at intervals. A waste gas channel is formed between the partition and the mounting frame. A second slide rail, corresponding to the positions of several layers of catalyst blocks and in the same number, is provided on the inner side of the waste gas channel. A baffle is slidably mounted on the inner side of the second or third slide rail.

[0006] By adopting the above technical solution, the catalytic section uses a multi-layer sliding support mesh plate to support the catalyst block. Combined with the slots on both sides of the mounting frame and the third slide rail, a dynamically adjustable catalyst contact structure is formed. When the carbon monoxide concentration in the exhaust gas changes, the sliding of the baffle on the second or third slide rail can precisely control the number of contact layers between the exhaust gas and the catalyst, avoiding ineffective catalytic loss caused by the traditional fixed structure.

[0007] Furthermore, several of the supporting mesh panels are arranged longitudinally at equal intervals, and the supporting mesh panels are slidably installed with the mounting frame via a first slide rail.

[0008] By adopting the above technical solution, the maintainability and space utilization of the catalytic section are enhanced. The equidistant arrangement ensures that each layer of catalyst blocks is heated evenly, avoiding local overheating or catalytic dead zones, and improving reaction stability.

[0009] Furthermore, the baffle is slidably installed with the second slide rail to restrict the entry of the exhaust gas into the corresponding catalyst layer through the slot on one side.

[0010] By adopting the above technical solution, when the carbon monoxide concentration in the exhaust gas is high, all baffles are slidably installed with the second slide rail, and the exhaust gas fully contacts all catalyst blocks through the slots to ensure the completeness of the oxidation reaction.

[0011] Furthermore, the baffle is slidably installed with the third slide rail to prevent exhaust gas from entering the corresponding catalyst layer through the slot.

[0012] By adopting the above technical solution, when it is necessary to completely block the top catalyst layer, the baffle is slidably installed with the third slide rail of the corresponding layer to directly seal the corresponding slot and prevent waste gas from entering the corresponding layer. This not only avoids redundant reactions, but also allows for isolation and maintenance of catalyst aging or poisoning layers, extending the overall lifespan of the device.

[0013] Furthermore, the heating element consists of several electric heating rods and is electrically connected to an external power source via a controller.

[0014] By adopting the above technical solution, the electric heating rod can quickly reach the preset temperature, and with the controller, it can achieve high-precision temperature control, ensuring that the catalytic reaction always takes place in the optimal activity range. At the same time, compared with traditional gas heating methods, electric heating has no risk of open flame, improves safety, and increases thermal efficiency.

[0015] Furthermore, an air inlet and an air outlet are respectively provided on both sides of the heat exchange section, and an inspection door is installed on the front side of the processing device, opposite to the position of the catalytic section.

[0016] By adopting the above technical solution, the symmetrical design of the air inlet and outlet reduces airflow backflow, improves heat exchange efficiency, and makes the temperature more uniform when the exhaust gas enters the catalytic converter.

[0017] In summary, the present invention has the following main advantages:

[0018] This invention, through its catalytic unit, allows exhaust gas to flow smoothly into each catalyst block when all baffles are placed inside the second slide rail, ensuring full contact between high-concentration carbon monoxide and the catalyst, thus improving reaction efficiency. Simultaneously, when the exhaust gas concentration is low, the baffles can be switched to the third slide rail to block part of the catalyst layer, reducing the loss of ineffective catalytic sites and system airflow resistance. This allows the amount of catalyst used to match the treatment requirements in real time, avoiding energy waste caused by redundant reactions and significantly reducing operating costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the catalytic unit structure of this utility model;

[0023] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A;

[0024] Figure 6 This is a schematic diagram of the first type of waste gas flow path structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the second type of waste gas flow path structure of this utility model.

[0026] In the diagram: 1. Heat exchange section; 201. Air inlet; 202. Air outlet; 3. Heating section; 4. Baffle; 5. Exhaust gas passage; 6. Catalytic converter; 601. Mounting frame; 602. Catalyst block; 603. Groove; 604. First slide rail; 605. Supporting mesh plate; 606. Second slide rail; 607. Third slide rail; 608. Baffle; 7. Inspection door. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In this embodiment:

[0029] High-temperature exhaust gas treatment devices, such as Figure 1-7As shown, the device includes a heat exchange section 1, a heating section 3, and a catalytic section 6. The catalytic section 6 includes a mounting frame 601. Several support mesh plates 605 are slidably mounted on the inner side of the mounting frame 601. Several catalyst blocks 602 are placed on the support mesh plates 605. Grooves 603 are formed on both sides of the mounting frame 601, corresponding to the positions of each layer of catalyst blocks 602. A third slide rail 607 is provided on the outer side of the grooves 603. A partition plate 4 is provided between the heating section 3 and the catalytic section 6 at intervals. An exhaust gas channel 5 is formed between the partition plate 4 and the mounting frame 601. A second slide rail 606, which is the same number as the several layers of catalyst blocks 602, is provided on the inner side of the exhaust gas channel 5, corresponding to the positions of the several layers of catalyst blocks 602. The second slide rail 606 or the third slide rail 607 A baffle 608 is slidably installed on the inner side of the catalyst section 6. The catalyst block 602 is supported by a multi-layer sliding support mesh plate 605. Together with the slots 603 on both sides of the mounting frame 601 and the third slide rail 607, a dynamically adjustable catalyst contact structure is formed. When the carbon monoxide concentration in the exhaust gas changes, the sliding of the baffle 608 on the second slide rail 606 or the third slide rail 607 can precisely control the number of contact layers between the exhaust gas and the catalyst, avoiding ineffective catalytic loss caused by the traditional fixed structure. At the same time, the exhaust gas channel 5 formed by the partition 4 and the mounting frame 601 optimizes the airflow path and further reduces the energy consumption requirement of the heating section 3. This not only achieves efficient utilization of the catalyst, but also reduces the resistance of redundant catalyst layers.

[0030] See Figure 1 , Figure 2 , Figure 3 , Figure 4 Several support mesh plates 605 are arranged longitudinally at equal intervals. The support mesh plates 605 are slidably installed on the mounting frame 601 via the first slide rail 604, which enhances the maintainability and space utilization of the catalytic unit 6. The equidistant arrangement ensures that each layer of catalyst block 602 is heated evenly, avoiding local overheating or catalytic dead zones, and improving reaction stability. At the same time, the sliding installation structure allows for quick disassembly or replacement of catalyst layers, improving maintenance efficiency. For example, when a certain layer of catalyst is deactivated, the operator can directly pull out the corresponding support mesh plate 605 through the maintenance door 7 for replacement without disassembling the entire device.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4The baffle 608 and the second slide rail 606 are slidably installed to restrict the slot 603 on the exhaust gas side from entering the corresponding catalyst layer. When the carbon monoxide concentration in the exhaust gas is high, all the baffles 608 and the second slide rail 606 are slidably installed, and the exhaust gas fully contacts all the catalyst blocks 602 through the slot 603 to ensure the completeness of the oxidation reaction. At the same time, under low concentration conditions, by controlling the baffle 608 to slide with the required third slide rail 607, the exhaust gas can be restricted to only pass through the necessary catalyst layer, reducing the loss of ineffective catalytic sites, improving the catalyst utilization rate, and reducing the system resistance. It is especially suitable for industrial scenarios with fluctuating exhaust gas concentration, achieving dynamic energy saving and cost control.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The baffle 608 and the third slide rail 607 are slidably installed to block the exhaust gas from entering the corresponding catalyst layer through the slot 603. When it is necessary to completely block the top catalyst layer, the baffle 608 and the third slide rail 607 of the corresponding layer are slidably installed to directly seal the corresponding slot 603 and prevent the exhaust gas from entering the corresponding layer. This not only avoids redundant reactions, but also allows for isolation and maintenance of the catalyst aging or poisoned layer, extending the overall life of the device. At the same time, it enables dynamic adjustment of the catalyst layer, allowing the catalytic unit 6 to adapt to more complex exhaust gas treatment needs.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The heating section 3 consists of several electric heating rods and is electrically connected to an external power source through a controller. The electric heating rods can quickly reach the preset temperature, and together with the controller, they can achieve high-precision temperature control to ensure that the catalytic reaction always takes place in the optimal activity range. At the same time, compared with traditional gas heating methods, electric heating eliminates the risk of open flame, improves safety, and increases thermal efficiency. In addition, the controller can dynamically adjust the heating power based on feedback from the carbon monoxide concentration sensor in the exhaust gas to achieve a balance between energy consumption and treatment efficiency.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The heat exchange section 1 is provided with an air inlet 201 and an air outlet 202 on both sides. An inspection door 7 is installed on the front side of the treatment device, opposite to the position of the catalytic section 6. The symmetrical design of the air inlet 201 and the air outlet 202 reduces airflow backflow, improves heat exchange efficiency, and makes the temperature more uniform when the exhaust gas enters the catalytic section 6. At the same time, the inspection door 7 is located directly in front of the catalytic section 6, which makes it easy for operators to directly observe the status of the catalyst and perform maintenance, shortening maintenance time. The compact layout also reduces the floor space, making it suitable for industrial environments with limited space.

[0035] The implementation principle of this embodiment is as follows: the exhaust gas enters from the inlet 201 of the heat exchange section 1, and after preheating, flows through the exhaust gas channel 5 formed by the partition 4 to the catalytic section 6. Inside the catalytic section 6, several catalyst blocks 602 are layered on a sliding support mesh plate 605. The mounting frame 601 has slots 603 on both sides corresponding to each catalyst layer, and a third slide rail 607 is configured on the outer side. By controlling the sliding installation of the baffles 608 on the second slide rail 606 or the third slide rail 607, the exhaust gas can be selectively blocked from entering a specific catalyst layer. When the carbon monoxide concentration in the exhaust gas is high, all the baffles 608 are slidably installed on the inner side of the second slide rail 606, so that the exhaust gas is in full contact with all the catalyst blocks 602. If the concentration is low, the baffles 608 are adjusted to slide on the third slide rail 607 to restrict the exhaust gas to only pass through part of the catalyst layer, avoiding redundant reactions. The treated gas is cooled by the heat exchange section 1 and discharged from the outlet 202. The corresponding device significantly reduces ineffective losses and system resistance by dynamically matching the amount of catalyst used, thereby achieving energy saving and cost reduction.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high-temperature waste gas treatment device, characterized in that: The device includes a heat exchange section (1), a heating section (3), and a catalytic section (6). The catalytic section (6) includes a mounting frame (601). Several support mesh plates (605) are slidably mounted on the inner side of the mounting frame (601). Several catalyst blocks (602) are placed on the support mesh plates (605). Slots (603) are provided on both sides of the mounting frame (601) and opposite to the positions of each layer of catalyst blocks (602). The outer side of the slots (603) is provided with... A third slide rail (607) is provided. A partition plate (4) is provided between the heating part (3) and the catalyst part (6). An exhaust gas passage (5) is formed between the partition plate (4) and the mounting frame (601). A second slide rail (606) is provided on the inner side of the exhaust gas passage (5) and is in the same number as a number of catalyst blocks (602). A baffle plate (608) is slidably installed on the inner side of the second slide rail (606) or the third slide rail (607).

2. The high-temperature waste gas treatment device according to claim 1, characterized in that: The supporting mesh plates (605) are arranged longitudinally at equal intervals, and the supporting mesh plates (605) are slidably installed with the mounting frame (601) via the first slide rail (604).

3. The high-temperature waste gas treatment device according to claim 1, characterized in that: The baffle (608) is slidably installed with the second slide rail (606) to restrict the slot (603) on the exhaust gas side from entering the corresponding catalyst layer.

4. The high-temperature waste gas treatment device according to claim 1, characterized in that: The baffle (608) is slidably installed with the third slide rail (607) to prevent exhaust gas from entering the corresponding catalyst layer through the slot (603).

5. The high-temperature waste gas treatment device according to claim 1, characterized in that: The heating part (3) consists of several electric heating rods and is electrically connected to an external power source through a controller.

6. The high-temperature waste gas treatment device according to claim 1, characterized in that: The heat exchange section (1) is provided with an air inlet (201) and an air outlet (202) on both sides respectively, and an inspection door (7) is installed on the front side of the processing device and opposite to the position of the catalytic section (6).

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