A waste gas circulation treatment calcination purification device

Abstract

This utility model relates to the field of roasting purification technology, and discloses a roasting purification device for waste gas recirculation treatment, including a heat storage chamber. A dust removal mechanism is installed at the right end of the heat storage chamber. The dust removal mechanism is used to remove dust generated by combustion purification in the heat storage chamber. A noise reduction mechanism is installed on the rear side of the right end of the heat storage chamber to reduce the noise generated by the fan and motor. The dust removal mechanism includes a motor, with an air inlet installed at the right end of the motor. A small cone is installed at the lower end of the air inlet, and a large cone is installed at the lower end of the small cone. A slot is installed at the bottom end of the large cone, and an air outlet is installed at the top end of the small cone. A pipe is installed at the right end of the air outlet. In this utility model, the double-cone cyclone dust removal mechanism has a double-cone structure that gradually increases the cross-sectional expansion rate of the airflow within the cone section, avoiding turbulence caused by sudden airflow diffusion, thereby reducing the secondary re-entrainment of dust particles.

Description

Technical Field

[0001] This utility model relates to the field of roasting and purification technology, and in particular to a roasting and purification device for waste gas recirculation treatment. Background Technology

[0002] The calcination purification device for waste gas recycling achieves waste gas purification through the technical logic of "high-temperature decomposition + recycling". The core of the calcination purification device is to use high temperature to cause pollutants in the waste gas to undergo thermal decomposition, oxidation-reduction and other reactions, and transform them into harmless or easily treated substances (such as CO2 and H2O). At the same time, heat and untreated gas are recovered and utilized through waste gas recycling. Its technical adaptability covers industrial scenarios that generate organic and inorganic pollutants, from petrochemicals to semiconductor manufacturing.

[0003] Calcination purification devices treat waste gas based on principles such as high-temperature decomposition and catalytic reactions. However, some complex pollutants cannot be completely decomposed due to insufficient calcination temperature or residence time, resulting in emission concentrations approaching or exceeding environmental standards. The calcination process consumes a large amount of heat energy. If the heat recovery system of the device is not designed properly, the heat from the high-temperature exhaust gas cannot be effectively transferred to the waste gas to be treated, resulting in energy waste and increased operating costs. High-temperature calcination requires continuous consumption of fuel (such as natural gas or coal) or electricity to maintain the reaction temperature. Especially when treating large volumes of low-concentration waste gas, energy costs increase significantly. In addition, the costs of catalyst replacement and equipment corrosion protection maintenance will also increase the overall cost. Operating costs are high, and internal components such as catalysts, heat exchangers, and pipes require regular maintenance to clean accumulated dust and scale or replace faulty parts. If the pollutants in the exhaust gas are complex, the maintenance cycle will be shortened, leading to increased labor costs and even affecting production continuity. In addition, when the exhaust gas concentration reaches the explosion limit and mixes with air, the high-temperature roasting environment can cause an explosion. When the fans (such as induced draft fans and forced draft fans) in the exhaust gas treatment are running at high speed, they will generate high-frequency or low-frequency noise due to blade rotation and fluid turbulence. Noise can interfere with concentration and increase the risk of operational errors (especially when the equipment involves high temperature, high pressure, or harmful media, errors can lead to safety accidents). Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a roasting and purification device for waste gas recirculation treatment, which aims to improve the problems of dust treatment in airflow and noise reduction of mechanical equipment in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a calcination purification device for waste gas recirculation treatment, comprising a heat storage chamber, a dust removal mechanism installed at the right end of the heat storage chamber, the dust removal mechanism being used to remove dust generated by combustion purification in the heat storage chamber, a noise reduction mechanism installed at the rear right end of the heat storage chamber, the noise reduction mechanism being used to reduce noise generated by the fan and motor, the dust removal mechanism including a motor, an air inlet installed at the right end of the motor, a small cone installed at the lower end of the air inlet, a large cone installed at the lower end of the small cone, a slot installed at the bottom end of the large cone, an air outlet installed at the top end of the small cone, and a pipe installed at the right end of the air outlet.

[0006] As a further description of the above technical solution:

[0007] The noise reduction mechanism includes an inner sound insulation wall, a guide plate installed inside the inner sound insulation wall, threaded bolts at both ends of the guide plate, a vibration isolator installed at the lower end of the inner sound insulation wall, a thermally conductive silicone sheet installed on the outer side of the noise reduction mechanism, and a ventilation silencer installed at the top of the noise reduction mechanism.

[0008] As a further description of the above technical solution:

[0009] A catalytic combustion chamber is installed at the upper end of the heat storage chamber, and a pipe is installed at the upper end of the catalytic combustion chamber.

[0010] As a further description of the above technical solution:

[0011] A pipe is installed at the upper end of the heat storage chamber, a fan is installed at the right end of the pipe, and a discharge pipe is installed at the upper end of the fan.

[0012] As a further description of the above technical solution:

[0013] An electrical control cabinet is installed at the right end of the heat storage chamber, and a second pipe is installed on the left side of the electrical control cabinet.

[0014] As a further description of the above technical solution:

[0015] A fan is installed on the inner side of the fan, and a protective mesh plate is installed on the right end of the fan blade.

[0016] As a further description of the above technical solution:

[0017] An electrical control cabinet is installed at the right end of the heat storage chamber. An indicator light is installed on the front outer wall of the electrical control cabinet, and a display is installed at the lower end of the indicator light.

[0018] As a further description of the above technical solution:

[0019] Each heat storage chamber is equipped with a door latch on its front side, and a support rod is fixedly connected to the lower end of each heat storage chamber.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, during the waste gas recirculation roasting purification treatment, the double-cone cyclone dust removal mechanism uses a double-cone structure with gradually changing cone angles in two layers to gradually increase the cross-sectional expansion rate of the airflow within the cone section, avoiding turbulence caused by sudden airflow diffusion, thereby reducing the secondary lifting of dust particles. The inlet uses a spiral curved surface to guide the airflow to form a more stable rotating flow field along the cylinder wall, reducing inlet eddy current loss, making the airflow distribution more uniform, and improving dust removal efficiency. In summary, it better achieves the effects of controlling dust pollution, protecting human and environmental safety, and ensuring the stability of equipment and processes.

[0022] 2. In this utility model, a noise reduction device is adopted. By absorbing vibration energy and combining it with the thermally conductive silicone sheet on the outer layer of the soundproof cover, the energy loss caused by air thermal resistance is reduced. At the same time, it achieves the effects of insulation and shock absorption. It is a key auxiliary facility for environmental protection compliance, protection of personnel health, and stable production operation. Attached Figure Description

[0023] Figure 1 This is a front view of a roasting and purification device for waste gas recirculation treatment proposed in this utility model;

[0024] Figure 2 This is a perspective view of a roasting and purification device for waste gas recirculation treatment proposed in this utility model;

[0025] Figure 3 This is a side view of a roasting and purification device for waste gas recirculation treatment proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the dust removal mechanism of a roasting purification device for waste gas recirculation treatment proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the noise reduction mechanism of a roasting purification device for waste gas recirculation treatment proposed in this utility model.

[0028] Legend:

[0029] 1. Heat storage chamber; 2. Dust removal mechanism; 201. Motor; 202. Air inlet; 203. Air outlet; 204. Pipe 3; 205. Small cone; 206. Large cone; 207. Slot; 3. Noise reduction mechanism; 301. Ventilation silencer; 302. Thermally conductive silicone sheet; 303. Internal sound insulation wall; 304. Bolt; 305. Guide plate; 306. Vibration isolator; 4. Catalytic combustion chamber; 5. Pipe 1; 6. Fan; 7. Discharge pipe; 8. Pipe 2; 9. Fan blade; 10. Support rod; 11. Display; 12. Electrical control cabinet; 13. Signal light; 14. Protective mesh plate; 15. Door latch. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a calcination purification device for waste gas recirculation treatment, including a heat storage chamber 1. A dust removal mechanism 2 is installed at the right end of the heat storage chamber 1. The dust removal mechanism 2 is used to remove dust generated by combustion purification in the heat storage chamber 1. A noise reduction mechanism 3 is installed on the rear side of the right end of the heat storage chamber 1. The noise reduction mechanism 3 is used to reduce the noise generated by the fan 6 and the motor 201. The dust removal mechanism 2 includes a motor 201, and an air inlet 202 is installed at the right end of the motor 201. A small cone 205 is installed at the lower end of the air inlet 202, a large cone 206 is installed at the lower end of the small cone 205, a slot 207 is installed at the bottom end of the large cone 206, an air outlet 203 is installed at the top end of the small cone 205, a pipe 204 is installed at the right end of the air outlet 203, a catalytic combustion chamber 4 is installed at the upper end of the heat storage chamber 1, a pipe 5 is installed at the upper end of the catalytic combustion chamber 4, a fan 6 is installed at the right end of the pipe 5, and an exhaust pipe 7 is installed at the upper end of the fan 6.

[0032] Specifically, after the exhaust gas is purified by roasting, the dust generated is discharged through the exhaust pipe 7 via the fan 6. The motor 201 of the dust removal mechanism 2 is started, and the dust in the airflow passes through the air inlet 202. The dust rotates downward along the cylinder through the small cone 205 and the large cone 206. The rotational inertia generates centrifugal force, and when it reaches the bottom, it separates the particulate matter in the gas. The generated particulate matter enters the slot 207. This double-cone cyclone dust removal design reduces the secondary lifting of dust particles and effectively controls dust pollution.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The noise reduction mechanism 3 includes an inner sound insulation wall 303, a guide plate 305 installed inside the inner sound insulation wall 303, threaded bolts 304 at both ends of the guide plate 305, a vibration isolator 306 installed at the lower end of the inner sound insulation wall 303, a thermally conductive silicone sheet 302 installed on the outer side of the noise reduction mechanism 3, a ventilation silencer 301 installed at the top of the noise reduction mechanism 3, an electrical control cabinet 12 installed at the right end of the heat storage chamber 1, a pipe 8 installed on the left side of the electrical control cabinet 12, a fan blade 9 installed inside the fan 6, and a protective mesh plate 14 installed at the right end of the fan blade 9.

[0034] Specifically, as the mechanical equipment continues to operate, the fan 6 and motor 201 generate noise. The guide plate 305 installed inside the noise reduction mechanism 3 effectively guides the airflow to reduce turbulent noise. The inner vibration isolator 306 of the noise reduction mechanism 3, the outer thermal conductive silicone sheet 302 of the noise reduction mechanism 3, and the ventilation silencer 301 installed at the top of the noise reduction mechanism 3 work together to reduce the noise generated during airflow and reduce noise pollution.

[0035] Reference Figure 1 , Figure 2 and Figure 3 An electrical control cabinet 12 is installed at the right end of the heat storage chamber 1. An indicator light 13 is installed on the front outer wall of the electrical control cabinet 12. A display 11 is installed at the lower end of the indicator light 13. Door latches 15 are installed on the front side of the heat storage chamber 1. A support rod 10 is fixedly connected to the lower end of the heat storage chamber 1.

[0036] Specifically, an electrical control cabinet 12 is installed at the right end of the heat storage chamber 1. An indicator light 13 is installed on the front outer wall of the electrical control cabinet 12. A display 11 is installed at the lower end of the indicator light 13. When the exhaust gas concentration exceeds the standard, the indicator light 13 on the front side of the electrical control cabinet 12 will flash. The display 11 is used to display the exhaust gas inlet temperature, outlet temperature and fan speed 6, so that maintenance personnel can keep track of the system's operating status at any time.

[0037] Working principle: When the waste gas roasting and purification treatment device is started, the heat storage chamber 1 absorbs the heat stored in the previous heat and quickly heats up to the catalytic reaction temperature. Then, the heat is transferred to the heat storage body for storage and is used to preheat the waste gas next time, realizing the heat recycling. The airflow in the heat storage chamber 1 is discharged through the discharge pipe 7 after treatment. The air inlet 202 of the dust removal mechanism 2 adopts a threaded type. The spiral structure of the threaded air inlet 202 makes the airflow velocity distribution at the inlet more uniform, reduces the local accumulation of high-concentration dust at the inlet, and reduces the risk of blockage of the inlet pipe caused by particle collision. The dust-laden gas is attracted by the motor 201 and enters the double cone cyclone device system. The double cone structure maintains a high centrifugal force at the small cone 205 at the upper end, and reduces the airflow velocity at the large cone 206 at the lower end through the expansion design, achieving the effect of high efficiency separation and low energy consumption. The dust rotates downward along the cylinder, and the rotational inertia generates centrifugal force. When it reaches the bottom, it separates the particulate matter in the gas. The generated particulate matter enters the slot 207. The separated gas is discharged through the outlet 203 and the pipe 204.

[0038] During the roasting and purification process of waste gas treatment, when the mechanical equipment operates at high speed, the turbulent friction between the fan blades and the air, and the impact of the airflow in the pipeline, generate a large amount of noise. The noise reduction mechanism 3 is activated, and the ventilation silencer 301 at the top of the noise reduction mechanism 3 reduces the noise generated during airflow by using the noise generated by the machine equipment. At the same time, the vibration isolator at the lower end of the inner sound insulation wall 303 isolates or reduces vibration transmission through elastic support and energy dissipation. The guide plate 305 installed inside the inner sound insulation wall 303 guides the airflow to reduce turbulent noise. The elastic material in the heat-conducting silicone sheet 302 on the outside of the noise reduction mechanism 3 absorbs the mechanical vibration during equipment operation, effectively reducing noise pollution.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A calcination purification device for waste gas recirculation treatment, comprising a heat storage chamber (1), characterized in that: A dust removal mechanism (2) is installed at the right end of the heat storage chamber (1). The dust removal mechanism (2) is used to remove the dust generated by the heat storage chamber (1) after combustion purification. A noise reduction mechanism (3) is installed at the rear right end of the heat storage chamber (1). The noise reduction mechanism (3) is used to reduce the noise generated by the fan (6) and the motor (201). The dust removal mechanism (2) includes a motor (201), an air inlet (202) is installed at the right end of the motor (201), a small cone (205) is installed at the lower end of the air inlet (202), a large cone (206) is installed at the lower end of the small cone (205), a slot (207) is installed at the bottom end of the large cone (206), an air outlet (203) is installed at the top end of the small cone (205), and a pipe (204) is installed at the right end of the air outlet (203).

2. The calcination purification device for waste gas recirculation treatment according to claim 1, characterized in that: The noise reduction mechanism (3) includes an inner sound insulation wall (303), a guide plate (305) is installed inside the inner sound insulation wall (303), the two ends of the guide plate (305) are threaded with bolts (304), a vibration isolator (306) is installed at the lower end of the inner sound insulation wall (303), a thermally conductive silicone sheet (302) is installed on the outside of the noise reduction mechanism (3), and a ventilation silencer (301) is installed at the top of the noise reduction mechanism (3).

3. The calcination purification device for waste gas recirculation treatment according to claim 1, characterized in that: A catalytic combustion chamber (4) is installed at the upper end of the heat storage chamber (1), and a pipe (5) is installed at the upper end of the catalytic combustion chamber (4).

4. The calcination purification device for waste gas recirculation treatment according to claim 1, characterized in that: The upper end of the heat storage chamber (1) is equipped with a pipe (5), the right end of the pipe (5) is equipped with a fan (6), and the upper end of the fan (6) is equipped with a discharge pipe (7).

5. The calcination purification device for waste gas recirculation treatment according to claim 1, characterized in that: An electrical control cabinet (12) is installed at the right end of the heat storage chamber (1), and a second pipe (8) is installed on the left side of the electrical control cabinet (12).

6. The calcination purification device for waste gas recirculation treatment according to claim 1, characterized in that: The fan (6) has a fan blade (9) installed on its inner side, and a protective mesh plate (14) is installed on the right end of the fan blade (9).

7. The calcination purification device for waste gas recirculation treatment according to claim 1, characterized in that: An electrical control cabinet (12) is installed at the right end of the heat storage chamber (1). An indicator light (13) is installed on the outer wall of the front end of the electrical control cabinet (12). A display (11) is installed at the lower end of the indicator light (13).

8. The calcination purification device for waste gas recirculation treatment according to claim 1, characterized in that: Each heat storage chamber (1) is equipped with a door latch (15) on the front side, and a support rod (10) is fixedly connected to the lower end of the heat storage chamber (1).

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