Waste gas treatment device of catalytic combustion equipment
By combining a coarse filter box, a fine filter box, and a tubular heat exchanger, the problems of increased humidity and heat loss in high-temperature gases are solved, achieving reliable cooling and heat recovery of the gas and reducing the operating cost of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI MUPING DISTRICT WASTE COMPREHENSIVE TREATMENT CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-19
AI Technical Summary
In existing catalytic combustion equipment, the contact between high-temperature gas and low-temperature spray liquid leads to a significant increase in gas humidity, resulting in white smoke and heat loss, which increases the operating cost of the equipment.
Dust is removed by coarse and fine filter boxes, and heat is exchanged by tubular heat exchangers. Water is pumped to the tubular heat exchangers to cool the gas. Water circulation is ensured by a water storage tank and inlet pipe. Solenoid valves control the drain outlet to ensure airtightness and heat recovery.
It achieves reliable cooling and dust removal of the gas, avoids the generation of white smoke, recovers heat, and reduces the operating cost of the equipment.
Smart Images
Figure CN224261735U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for catalytic combustion equipment. Background Technology
[0002] Catalytic combustion equipment is an environmentally friendly device used to treat volatile organic compounds and toxic and harmful gases. Through the action of a catalyst, it achieves efficient oxidative decomposition of organic pollutants at relatively low temperatures.
[0003] Patent publication number CN222503880U proposes a catalytic combustion equipment exhaust gas treatment device, which mainly includes a catalytic burner body, an exhaust pipe connected to the outer wall of the exhaust component, and a dust suppression component at the top of the exhaust component. The dust suppression component at the top of the cooling box can cool down the emitted gas to avoid high-temperature emission, which would seriously affect the working efficiency of gas emission.
[0004] The aforementioned patent describes a gas cooling method using spray cooling and dust suppression. However, in actual use, when high-temperature gas comes into contact with low-temperature spray liquid, some of the liquid evaporates, leading to a significant increase in gas humidity. High-humidity gas is prone to producing white smoke when emitted, and direct spray cooling results in heat loss, increasing the cost of using the device. Utility Model Content
[0005] To address the above problems, the purpose of this utility model is to provide a waste gas treatment device for catalytic combustion equipment, which solves the problem that after high-temperature gas comes into contact with low-temperature spray liquid, some liquid evaporates, resulting in a significant increase in gas humidity. High humidity gas is prone to producing white smoke when discharged, and direct spray cooling will cause heat loss, increasing the cost of using the device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a catalytic combustion equipment waste gas treatment device, comprising a catalytic combustion device, wherein a waste gas inlet is provided at the bottom of the catalytic combustion device, and an outlet pipe is installed at the top of the catalytic combustion device; a coarse filter box is connected below the outlet pipe, and a fine filter box is connected below the coarse filter box via a pipe; a connecting pipe is installed below the fine filter box, and a tubular heat exchanger is connected below the connecting pipe via a flange; a water outlet pipe is installed on the outside of the tubular heat exchanger, and an exhaust pipe is installed above the tubular heat exchanger; a water storage tank is connected to the end of the water outlet pipe away from the tubular heat exchanger, and a drain outlet is installed on the outside of the water storage tank; a water pump is installed inside the water storage tank, and a water supply pipe is connected above the water pump.
[0007] The beneficial effects of this utility model are as follows: the gas is filtered and dust is removed by coarse filter box and fine filter box, and the high temperature gas is heat exchanged by tubular heat exchanger, thereby recovering the waste heat of the treated gas. In this way, the exhaust gas can be reliably cooled and dust removed, and the generation of white smoke during the emission can be avoided.
[0008] To facilitate heat recovery:
[0009] As a further improvement to the above technical solution: the other end of the water pipeline is connected to a tubular heat exchanger.
[0010] The beneficial effects of this improvement are: the water pump transports water from the storage tank to the interior of the tubular heat exchanger through the water pipeline, and heat exchange occurs between the gas and the water through the tubular heat exchanger.
[0011] For easy access to water:
[0012] As a further improvement to the above technical solution: a water inlet pipe is provided on the top of the water storage tank.
[0013] The beneficial effects of this improvement are: the water in the storage tank can be replaced through the water inlet pipe, ensuring the continuity of waste heat recovery.
[0014] To allow for the opening and closing of the air drain vent:
[0015] As a further improvement to the above technical solution: a solenoid valve is installed on the drain outlet.
[0016] The beneficial effects of this improvement are: the drain outlet can be connected to the boiler to preheat the water entering the boiler, and the solenoid valve can discharge the water after it has risen to a certain temperature.
[0017] To ensure the airtightness of the connection between the connecting pipe and the tubular heat exchanger:
[0018] As a further improvement to the above technical solution: the connecting pipe is connected to the tubular heat exchanger via a flange.
[0019] The beneficial effect of this improvement is that the flange can effectively ensure the airtightness of the connection between the connecting pipe and the tubular heat exchanger.
[0020] To ensure filtration efficiency:
[0021] As a further improvement to the above technical solution: the interior of the coarse filter box is filled with a conical filter screen.
[0022] As a further improvement to the above technical solution, the number of coarse filter boxes is two.
[0023] The beneficial effects of this improvement are: the two coarse filter boxes can filter high-temperature gases more quickly, and the conical filter screen can reduce the occurrence of filter screen clogging.
[0024] To avoid heat damage:
[0025] As a further improvement to the above technical solution: an insulation layer is provided on the outside of the air outlet pipe.
[0026] The beneficial effect of this improvement is that the insulation layer can make the delivery of high-temperature gas through the exhaust pipe more reliable. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall main view structure.
[0028] Figure 2 This is a schematic diagram of the overall side view structure.
[0029] Figure 3 This is a schematic diagram of the overall top-down structure.
[0030] Figure 4 This is a schematic diagram of the coarse filter box and the fine filter box.
[0031] Figure 5 for Figure 1 Enlarged structural diagram at point A in the middle.
[0032] In the diagram: 1. Catalytic combustion device; 11. Exhaust gas inlet; 12. Exhaust pipe; 2. Coarse filter box; 21. Fine filter box; 22. Connecting pipe; 3. Tubular heat exchanger; 31. Water outlet pipe; 32. Exhaust pipe; 4. Water storage tank; 41. Drain outlet; 42. Water pump; 43. Water supply pipeline. Detailed Implementation
[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0034] Example:
[0035] like Figure 1-5As shown, a catalytic combustion equipment exhaust gas treatment device includes a catalytic combustion device 1. An exhaust gas inlet 11 is provided at the bottom of the catalytic combustion device 1, and an exhaust pipe 12 is installed at the top of the catalytic combustion device 1. A coarse filter box 2 is connected below the exhaust pipe 12, and a fine filter box 21 is connected below the coarse filter box 2 via a pipe. A connecting pipe 22 is installed below the fine filter box 21, and a tubular heat exchanger 3 is connected below the connecting pipe 22 via a flange. A water outlet pipe 31 is installed on the outside of the tubular heat exchanger 3. An exhaust pipe 32 is installed above the heat exchanger 3. The end of the water outlet pipe 31 furthest from the tubular heat exchanger 3 is connected to a water storage tank 4, and a drain outlet 41 is installed on the outside of the water storage tank 4. A water pump 42 is installed inside the water storage tank 4, and a water supply pipe 43 is connected above the water pump 42. The gas is filtered and dust removed through the coarse filter box 2 and the fine filter box 21. The high-temperature gas undergoes heat exchange through the tubular heat exchanger 3, thereby recovering the waste heat of the treated gas. This method can reliably cool and remove dust from the exhaust gas and avoid emissions. During the generation of white smoke, the other end of the water supply pipe 43 is connected to the tubular heat exchanger 3. The water pump 42 transports the water in the water storage tank 4 to the interior of the tubular heat exchanger 3 through the water supply pipe 43. Heat exchange occurs between the gas and water through the tubular heat exchanger 3. A water inlet pipe is provided at the top of the water storage tank 4, which can be used to replace the water in the water storage tank 4 to ensure the continuity of waste heat recovery. A solenoid valve is installed on the drain outlet 41, which can be connected to the boiler to preheat the water entering the boiler. The solenoid valve can adjust the water level when the water rises. The gas is discharged after reaching a certain temperature. The connecting pipe 22 is connected to the tubular heat exchanger 3 by a flange. The flange can effectively ensure the airtightness of the connection between the connecting pipe 22 and the tubular heat exchanger 3. The interior of the coarse filter box 2 is filled with a conical filter screen. There are two coarse filter boxes 2. The two coarse filter boxes 2 can make the filtration of high temperature gas faster, and the conical filter screen can reduce the occurrence of filter screen clogging. The outside of the outlet pipe 12 is provided with a heat insulation layer, which can make the delivery of high temperature gas by the outlet pipe 12 more reliable.
[0036] The working principle of this utility model is as follows: When using this device, the flue gas, after filtration, enters the interior of the catalytic combustion device 1 through the exhaust gas inlet 11. After undergoing high temperature and catalytic reaction, the gas is discharged through the outlet pipe 12. Then, the gas is filtered through the coarse filter box 2 and the fine filter box 21, and then enters the interior of the tubular heat exchanger 3 through the connecting pipe 22. The water pump 42 transports water from the water storage tank 4 to the interior of the tubular heat exchanger 3 through the water supply pipe 43. Heat exchange occurs between the gas and water through the tubular heat exchanger 3, and the two are isolated by pipes. After cooling, the gas is discharged through the exhaust pipe 32. The heated water flows back into the water storage tank 4 through the water outlet pipe 31 to recover the waste heat of the treated gas. In this way, the exhaust gas can be reliably cooled and dust removed, and the generation of white smoke during the emission can be avoided. As mentioned above, the tubular heat exchanger 3 can be replaced with a gas heat exchanger. The exhaust gas enters the tubular heat exchanger 3 through the water supply pipe 43, exchanges heat with the high temperature gas, and then enters the exhaust gas inlet 11 through the exhaust pipe 32 to preheat the gas that needs to undergo catalytic combustion reaction.
[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0038] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.
Claims
1. A catalytic combustion equipment waste gas treatment device, comprising a catalytic combustion device (1), characterized in that: The catalytic combustion device (1) is provided with a waste gas inlet (11) at the bottom and a gas outlet pipe (12) is installed at the top of the catalytic combustion device (1). A coarse filter box (2) is connected below the gas outlet pipe (12), and a fine filter box (21) is connected below the coarse filter box (2) through a pipe. A connecting pipe (22) is installed below the fine filter box (21), and a tubular heat exchanger (3) is connected below the connecting pipe (22) through a flange. A water outlet pipe (31) is installed on the outside of the tubular heat exchanger (3), and an exhaust pipe (32) is installed above the tubular heat exchanger (3). A water storage tank (4) is connected to the end of the water outlet pipe (31) away from the tubular heat exchanger (3), and a drain outlet (41) is installed on the outside of the water storage tank (4). A water pump (42) is installed inside the water storage tank (4), and a water supply pipe (43) is connected above the water pump (42).
2. The catalytic combustion equipment waste gas treatment device according to claim 1, characterized in that: The other end of the water supply pipe (43) is connected to the tubular heat exchanger (3).
3. The catalytic combustion equipment exhaust gas treatment device according to claim 1, characterized in that: The top of the water storage tank (4) is equipped with a water inlet pipe.
4. The catalytic combustion equipment exhaust gas treatment device according to claim 1, characterized in that: A solenoid valve is installed on the drain outlet (41).
5. The catalytic combustion equipment waste gas treatment device according to claim 1, characterized in that: The connecting pipe (22) is connected to the tubular heat exchanger (3) via a flange.
6. The catalytic combustion equipment waste gas treatment device according to claim 1, characterized in that: The interior of the coarse filter box (2) is filled with a conical filter screen.
7. The catalytic combustion equipment waste gas treatment device according to claim 1, characterized in that: The number of coarse filter boxes (2) is two.
8. The catalytic combustion equipment waste gas treatment device according to claim 1, characterized in that: An insulation layer is provided on the outside of the air outlet pipe (12).