Tail gas treatment device for industrial low-nitrogen combustor

Abstract

The utility model discloses an industrial low-nitrogen burner tail gas treatment device, which relates to the technical field of tail gas treatment, and comprises a burner body and a treatment box, the burner body is connected with a filter mechanism, the filter mechanism is used for filtering tail gas discharged by the burner body, and the treatment box is connected with the burner body. The filtering mechanism comprises a pipeline with one end communicated with the combustor body, a fan used for leading out tail gas is arranged on the pipeline, the end, away from the combustor body, of the pipeline fixedly penetrates through the side wall of the treatment box and a filter screen, the filter screen is used for filtering impurities in the tail gas, and a spray head used for flushing the filter screen is arranged on the side wall of the treatment box on one side of the filter screen. The end, away from the filter screen, of the spray head is connected with a water inlet pipe used for supplying liquid to the spray head, a backflow mechanism is arranged at the top of the treatment box, and the backflow mechanism is used for backflow of purified gas. Equipment is not needed to mix the purification liquid, so that the influence on the reaction effect of the gas and the purification liquid is avoided, part of purified gas can be temporarily stored, and resource waste is avoided.

Description

An industrial low-NOx burner exhaust gas treatment device Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, specifically to an industrial low-NOx burner exhaust gas treatment device. Background Technology

[0002] In industrial processing, some raw materials need to be burned. In order to protect the environment and reduce the emission of waste gas, low-NOx burners are generally used to burn the raw materials. However, some harmful gases still exist in the exhaust gas after the combustion of low-NOx burners. Therefore, the exhaust gas of industrial low-NOx burners needs to be treated.

[0003] In the prior art, utility model patent with announcement number CN216537780U provides an industrial low-NOx burner exhaust gas treatment device, including a burner body, a treatment frame, a gas monitoring device, a servo motor, a stirring rod, an elastic rope, a cleaning block, and an intake fan rod. The left side surface of the burner body has an air inlet, and the right side surface of the burner body has an air outlet. The upper surface of the air inlet is connected to a return pipe, and the outer surface of the return pipe is rotatably connected to a one-way valve.

[0004] The industrial low-NOx burner exhaust gas treatment device requires the use of equipment to mix purification liquid. Insufficient contact between the gas and the purification liquid affects the reaction effect. Therefore, we propose an industrial low-NOx burner exhaust gas treatment device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an industrial low-NOx burner exhaust gas treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an industrial low-NOx burner exhaust gas treatment device, comprising a burner body and a treatment box, wherein a filter mechanism is connected to the burner body, the filter mechanism is used to filter the exhaust gas emitted by the burner body, the filter mechanism includes a pipe with one end connected to the burner body, a fan for drawing out the exhaust gas is provided on the pipe, the end of the pipe away from the burner body is fixedly inserted through the side wall of the treatment box and a filter screen, the filter screen is used to filter impurities in the exhaust gas, a nozzle for rinsing the filter screen is provided on the side wall of the treatment box on one side of the filter screen, a water inlet pipe for supplying liquid to the nozzle is connected to the end of the nozzle away from the filter screen, and a reflux mechanism is provided on the top of the treatment box.

[0007] Preferably, the reflux mechanism is used to reflux the purified gas.

[0008] Preferably, the reflux mechanism includes a gas pipe with one end connected to the top of the processing box, a third opening of the gas pipe connected to a gas storage tank, a pressure valve provided at the end of the gas pipe near the gas storage tank, and a fixed pipe for supplying gas to the burner body provided on the gas storage tank.

[0009] Preferably, the pipe has an L-shaped structure, the fan is located between the burner body and the treatment box, the filter screen is fixed inside the treatment box, and a drain pipe is provided at the bottom of the treatment box below the filter screen.

[0010] Preferably, the nozzle is U-shaped, with its two ends located above and below the filter screen, and the free end of the water inlet pipe is connected to the purified liquid source.

[0011] Preferably, the gas pipe is a three-way pipe, with the first opening of the gas pipe connected to the processing box and the second opening of the gas pipe connected to the burner body.

[0012] Preferably, the gas storage tank is used to store gas, the pressure valve is a gas pressure valve, one end of the fixed pipe is connected to the burner body, and a valve is provided on the fixed pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When using this industrial low-NOx burner exhaust gas treatment device, when it is necessary to treat the exhaust gas in the burner body, start the fan to draw out the exhaust gas and introduce it into the purification liquid in the treatment tank through the pipeline for pneumatic stirring. After the gas reacts with the purification liquid, it rises. After being filtered by the filter screen, the gas reaches the top of the treatment tank. The water inlet pipe delivers the purification liquid into the treatment tank through the nozzle. The gas is directly introduced into the purification liquid for full contact, which makes the reaction effect better. There is no need to use equipment to mix the purification liquid, thus avoiding affecting the reaction effect between the gas and the purification liquid.

[0015] 2. After purification, the gas enters the gas pipe through the first opening and then enters the burner body's air inlet through the second opening for secondary combustion. When the pressure in the gas pipe reaches the set value, the pressure valve opens and some of the gas in the pipe enters the gas storage tank through the third opening for storage. It then enters the burner body's air inlet through the fixed pipe for secondary combustion, thus temporarily storing some of the purified gas and avoiding resource waste. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of this utility model;

[0017] Figure 2 is a structural schematic diagram of the filter mechanism in this utility model;

[0018] Figure 3 is a schematic diagram of the reflux mechanism in this utility model.

[0019] In the diagram: 1. Burner body; 2. Processing box; 3. Filter mechanism; 31. Pipe; 32. Fan; 33. Filter screen; 34. Nozzle; 35. Water inlet pipe; 4. Return mechanism; 41. Gas pipe; 42. Gas storage tank; 43. Pressure valve; 44. Fixed pipe. Detailed Implementation

[0020] 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.

[0021] Please refer to Figures 1-3. An industrial low-NOx burner exhaust gas treatment device includes a burner body 1 and a treatment chamber 2. A filter mechanism 3 is connected to the burner body 1. The filter mechanism 3 is used to filter the exhaust gas emitted by the burner body 1. The filter mechanism 3 includes a pipe 31 with one end connected to the burner body 1. A fan 32 is provided on the pipe 31 for drawing out the exhaust gas. The end of the pipe 31 away from the burner body 1 is fixedly inserted through the side wall of the treatment chamber 2 and a filter screen 33. The filter screen 33 is used to filter impurities in the exhaust gas. A nozzle 34 for rinsing the filter screen 33 is provided on the side wall of the treatment box 2. The end of the nozzle 34 away from the filter screen 33 is connected to a water inlet pipe 35 for supplying liquid to the nozzle 34. The pipe 31 has an L-shaped structure. The fan 32 is located between the burner body 1 and the treatment box 2. The filter screen 33 is fixedly installed inside the treatment box 2. A drain pipe is provided at the bottom of the treatment box 2 below the filter screen 33. The nozzle 34 has a U-shaped shape. The two ends of the nozzle 34 are above and below the filter screen 33, respectively. The free end of the water inlet pipe 35 is connected to the purification liquid source.

[0022] When using this industrial low-NOx burner exhaust gas treatment device, when it is necessary to treat the exhaust gas in the burner body 1, the fan 32 is started to draw out the exhaust gas, which is then introduced into the purification liquid in the treatment tank 2 through the pipe 31 for pneumatic stirring. After the gas reacts with the purification liquid, it rises and reaches the top of the treatment tank 2 after being filtered by the filter screen 33. The water inlet pipe 35 delivers the purification liquid into the treatment tank 2 through the nozzle 34. The gas is directly introduced into the purification liquid for full contact, which makes the reaction effect better. There is no need to use equipment to mix the purification liquid, thus avoiding affecting the reaction effect between the gas and the purification liquid.

[0023] The top of the treatment box 2 is equipped with a reflux mechanism 4, which is used to reflux the purified gas. The reflux mechanism 4 includes a gas pipe 41 with one end connected to the top of the treatment box 2, a third opening of the gas pipe 41 connected to the gas storage tank 42, a pressure valve 43 at the end of the gas pipe 41 near the gas storage tank 42, a fixed pipe 44 on the gas storage tank 42 for supplying gas to the burner body 1, the gas pipe 41 is a three-way pipe, the first opening of the gas pipe 41 is connected to the treatment box 2, the second opening of the gas pipe 41 is connected to the air inlet of the burner body 1, a one-way valve is provided at the second opening of the gas pipe 41 for restricting the gas from entering the gas pipe 41 from the burner body 1, the gas storage tank 42 is used to store gas, the pressure valve 43 is a pressure-opening one-way valve in the gas pressure valve, one end of the fixed pipe 44 is connected to the air inlet of the burner body 1, and a valve is provided on the fixed pipe 44.

[0024] After purification, the gas enters the gas pipe 41 through the first opening and then enters the air inlet of the burner body 1 through the second opening for secondary combustion. When the pressure in the gas pipe 41 reaches the set value, the pressure valve 43 opens and some of the gas in the pipe 41 enters the gas storage tank 42 through the third opening of the gas pipe 41 for storage. It then enters the air inlet of the burner body 1 through the fixed pipe 44 for secondary combustion, thus temporarily storing some of the purified gas and avoiding resource waste.

[0025] Working Principle: When using this industrial low-NOx burner exhaust gas treatment device, when the exhaust gas in the burner body 1 needs to be treated, the fan 32 is started to draw out the exhaust gas, which is then introduced into the purification liquid in the treatment tank 2 through the pipe 31 for pneumatic stirring. After the gas reacts with the purification liquid, it rises and is filtered by the filter screen 33 before reaching the top of the treatment tank 2. The water inlet pipe 35 delivers the purification liquid into the treatment tank 2 through the nozzle 34. The gas is directly introduced into the purification liquid for full contact, resulting in a better reaction effect. There is no need to use equipment to mix the purification liquid, thus avoiding affecting the reaction effect between the gas and the purification liquid. The purified gas enters the gas pipe 41 through the first opening, and then enters the air inlet of the burner body 1 through the second opening for secondary combustion. When the pressure in the gas pipe 41 reaches the set value, the pressure valve 43 opens, and some of the gas in the pipe 41 enters the gas storage tank 42 through the third opening of the gas pipe 41 for storage. It then enters the air inlet of the burner body 1 through the fixed pipe 44 for secondary combustion, thus temporarily storing some of the purified gas and avoiding resource waste.

[0026] The wind turbine is existing technology and will not be discussed further here.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial low-NOx burner exhaust gas treatment device, comprising a burner body (1) and a treatment chamber (2), characterized in that: A filter mechanism (3) is connected to the burner body (1). The filter mechanism (3) is used to filter the exhaust gas emitted by the burner body (1). The filter mechanism (3) includes a pipe (31) with one end connected to the burner body (1). A fan (32) for drawing out the exhaust gas is provided on the pipe (31). The end of the pipe (31) away from the burner body (1) is fixedly inserted through the side wall of the treatment box (2) and the filter screen (33). The filter screen (33) is used to filter impurities in the exhaust gas. A nozzle (34) for rinsing the filter screen (33) is provided on the side wall of the treatment box (2) on one side of the filter screen (33). A water inlet pipe (35) for supplying liquid to the nozzle (34) is connected to the end of the nozzle (34) away from the filter screen (33). A return mechanism (4) is provided on the top of the treatment box (2).

2. The industrial low NOx burner off-gas treatment apparatus according to claim 1, characterized by: The reflux mechanism (4) is used to reflux the purified gas.

3. The industrial low-NOx burner exhaust gas treatment device according to claim 2, characterized in that: The reflux mechanism (4) includes a gas pipe (41) with one end connected to the top of the processing box (2), the third opening of the gas pipe (41) being connected to the gas storage tank (42), a pressure valve (43) being provided at one end of the gas pipe (41) near the gas storage tank (42), and a fixed pipe (44) for supplying gas to the burner body (1) being provided on the gas storage tank (42).

4. The industrial low-NOx burner exhaust gas treatment device according to claim 1, characterized in that: The pipe (31) has an L-shaped structure. The fan (32) is located between the burner body (1) and the treatment box (2). The filter (33) is fixed inside the treatment box (2). A drain pipe is provided at the bottom of the treatment box (2) below the filter (33).

5. The industrial low-NOx burner exhaust gas treatment device according to claim 1, characterized in that: The nozzle (34) is U-shaped, with its two ends located above and below the filter screen (33), and the free end of the water inlet pipe (35) is connected to the purified liquid source.

6. The industrial low-NOx burner exhaust gas treatment device according to claim 3, characterized in that: The gas pipe (41) is a three-way pipe. The first opening of the gas pipe (41) is connected to the processing box (2), and the second opening of the gas pipe (41) is connected to the burner body (1).

7. The industrial low-NOx burner exhaust gas treatment device according to claim 3, characterized in that: The gas storage tank (42) is used to store gas, the pressure valve (43) is a gas pressure valve, one end of the fixed pipe (44) is connected to the burner body (1), and a valve is provided on the fixed pipe (44).

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