Nitric acid tail gas recovery and purification equipment

Abstract

The utility model discloses nitric acid tail gas recovery purification equipment, including purification mechanism, filtration mechanism and cleaning mechanism, the purification mechanism includes purification chamber, with the top of purification chamber connected distributive pipe, with the plurality of shower heads of distributive pipe connection and communication, the shower head water outlet end is located in the purification chamber, filtration mechanism is located in the purification chamber, and the cleaning mechanism is located in the purification chamber. And the filtering mechanism comprises an air pipe which transversely penetrates through one side of the purification chamber. According to the tail gas purification device, the tail gas is injected into the screw cap, then flows through the annular cylindrical cavity and is filtered by the filter screen, dust particles in the tail gas are screened out, then the tail gas enters the purification chamber and is sprayed by the plurality of shower heads, so that the tail gas is purified, then the electromagnetic valve is opened, purified air and liquid water are discharged, and after dust is removed, the tail gas is purified. The liquid of the sprayed tail gas cannot become sewage, so that the water source is recycled, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitric acid tail gas recovery, in particular to nitric acid tail gas recovery and purification equipment. Background Art

[0002] Application number CN201920135205.9 discloses a nitric acid tail gas recovery device, including a tail gas intake pipe and other structures. The utility model has a simple structure and is easy to operate. It can effectively treat the tail gas to avoid air pollution. At the same time, it can recover the nitric acid gas discharged with the tail gas, avoiding waste of resources, saving costs, and improving the overall economic benefits. However, in specific use, since the tail gas is not filtered, when the tail gas is sprayed, the dust particles in the gas will fall mixed with water, making it impossible to recycle the water, wasting water resources. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted in this utility model is:

[0005] A nitric acid tail gas recovery and purification device comprises a purification mechanism, a filtering mechanism and a cleaning mechanism, wherein the purification mechanism comprises a purification chamber, a water distribution pipe connected to the top of the purification chamber, a plurality of shower heads connected and communicated with the water distribution pipe, wherein the water outlet of the shower heads is located inside the purification chamber, a filtering mechanism, wherein the filtering mechanism comprises an air pipe transversely penetrating one side of the purification chamber, a plurality of springs connected between the purification chamber and the air pipe, a filter screen movably installed inside the air pipe, a sleeve ring sleeved on the outside of the filter screen and fitted with the inner wall of the air pipe, a blocking disk installed inside the filter screen, wherein an annular cylindrical cavity is formed between the air pipe and the filter screen, and a cleaning mechanism, wherein the cleaning mechanism comprises a plurality of rod bodies installed on one side of the air pipe, and a scraper connected between the three rod bodies.

[0006] By adopting the above technical solution, this part of the exhaust gas is injected into the screw cap, then flows through the annular cylindrical cavity, is filtered by the filter, and then the dust particles in the exhaust gas are screened out, and then enters the purification room, and is sprayed by multiple showers, thereby achieving exhaust gas purification, and then the solenoid valve is opened to discharge the purified air and liquid water. After the dust is removed, the liquid sprayed with the exhaust gas will not become sewage, so that the water source can be reused and the purpose of energy saving and emission reduction can be achieved.

[0007] In a preferred example, the utility model can be further configured as follows: a reinforcement component is provided on the top of the purification chamber, and the reinforcement component includes a polygonal plate connected to the top of the purification chamber, and a plurality of steel plates connected between the purification chamber and the polygonal plate, and the plurality of steel plates are respectively attached to the front and rear sides of the water distribution pipe.

[0008] In a preferred example, the utility model can be further configured as follows: two slope plates are installed at the bottom of the inner cavity of the clean room, and the two slope plates are vertically symmetrical about the vertical center plane of the clean room.

[0009] In a preferred example, the utility model can be further configured as follows: a liquid outlet pipe communicating with the interior of the purification chamber is installed at the bottom of the purification chamber, and a solenoid valve is installed on the liquid outlet pipe.

[0010] In a preferred example, the utility model can be further configured as follows: a sealing sleeve is installed on one side of the purification chamber, and the sealing sleeve is sleeved on the outside of the filtering mechanism.

[0011] In a preferred example, the utility model can be further configured as follows: a plurality of springs are equally spaced and annularly surrounded at one end of the air pipe, and the springs are located inside the sealing sleeve.

[0012] In a preferred example, the utility model can be further configured as follows: a screw cap is screwed onto the outer end of the air pipe, and the interior of the screw cap is connected to the interior of the annular column cavity.

[0013] In a preferred example, the utility model can be further configured as follows: the scraper is provided in plurality, the plurality of scrapers are arranged in groups of three, and are arranged in two groups, the two groups of scrapers are laterally symmetrical about the horizontal center plane of the filter, and the outer edge of the scraper is movably fitted with the inner wall of the trachea.

[0014] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0015] 1. In the utility model, this part of the exhaust gas is injected into the screw cap, and then flows through the annular cylindrical cavity and is filtered by the filter screen. Then the dust particles in the exhaust gas are screened out, and then enter the purification room and are sprayed by multiple showers, thereby achieving the purification of the exhaust gas. Then the solenoid valve is opened to discharge the purified air and liquid water. After the dust is removed, the liquid sprayed with the exhaust gas will not become sewage, so that the water source can be reused and the purpose of energy saving and emission reduction can be achieved.

[0016] 2. In the utility model, when cleaning the dust in the trachea, remove the screw cap, then pull out the filter, then follow the moving scraper to clean the dust on the inner wall of the trachea, then shake the outer end of the trachea up and down, and multiple springs increase the shaking frequency of the trachea, thereby completely discharging the dust in the filter and the trachea, improving the cleaning effect and ensuring the subsequent filtering effect of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the purification mechanism of the utility model;

[0019] Figure 3This is a schematic diagram of the filtering mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the trachea of ​​the utility model.

[0021] Reference numerals:

[0022] 100, purification mechanism; 110, purification room; 120, water distribution pipe; 130, shower head;

[0023] 200, filtering mechanism; 210, air pipe; 220, spring; 230, filter screen; 240, collar; 250, plugging disk;

[0024] 300, cleaning mechanism; 310, rod body; 320, scraper;

[0025] 400, reinforcement component; 410, polygonal plate; 420, steel plate;

[0026] 500, slope board;

[0027] 600, solenoid valve;

[0028] 700, sealing sleeve;

[0029] 800, screw cap. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0031] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0032] A nitric acid tail gas recovery and purification device provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings.

[0033] Embodiment 1:

[0034] Combination Figure 1-4 As shown, the utility model provides a nitric acid tail gas recovery and purification device, including a purification mechanism 100, a filtering mechanism 200 and a cleaning mechanism 300, wherein the purification mechanism 100 includes a purification chamber 110, a water distribution pipe 120 connected to the top of the purification chamber 110, and a plurality of shower heads 130 connected and communicated with the water distribution pipe 120, wherein the water outlet end of the shower head 130 is located inside the purification chamber 110;

[0035] The filter mechanism 200 includes an air pipe 210 that runs transversely through one side of the purification chamber 110, a plurality of springs 220 connected between the purification chamber 110 and the air pipe 210, a filter screen 230 that is movably installed inside the air pipe 210, a collar 240 that is sleeved on the outside of the filter screen 230 and fits the inner wall of the air pipe 210, and a plugging disk 250 installed inside the filter screen 230, wherein an annular cylindrical cavity is formed between the air pipe 210 and the filter screen 230;

[0036] The cleaning mechanism 300 includes a plurality of rod bodies 310 installed on one side of the air pipe 210 and a scraper 320 connected between the three rod bodies 310 .

[0037] Furthermore, two ramps 500 are installed at the bottom of the inner cavity of the purification chamber 110 . The two ramps 500 are vertically symmetrical about the vertical center plane of the purification chamber 110 . The ramps 500 can guide the direction of water flow and avoid residual water inside the purification chamber 110 .

[0038] Furthermore, a liquid outlet pipe connected to the interior of the purification chamber 110 is installed at the bottom of the purification chamber 110, and an electromagnetic valve 600 is installed on the liquid outlet pipe. The liquid outlet pipe is provided to provide a discharge channel for the liquid in the purification chamber 110, and then the electromagnetic valve 600 can control the discharge time of the liquid and air.

[0039] Furthermore, a screw cap 800 is screwed onto the outer end of the air pipe 210, and the interior of the screw cap 800 is connected to the interior of the annular column cavity. The screw cap 800 can unify the direction of exhaust gas entering and accurately inject the exhaust gas into the annular column cavity.

[0040] Furthermore, the scraper 320 is provided in plurality, and the plurality of scrapers 320 are arranged in groups of three to three, and are provided in two groups. The two groups of scrapers 320 are laterally symmetrical about the horizontal center plane of the filter 230, and the outer edge of the scraper 320 is movably fitted with the inner wall of the trachea 210. This structural design can improve the cleaning effect of the inner wall of the trachea 210.

[0041] Embodiment 2:

[0042] Combination Figure 1-2 As shown, on the basis of Example 1, a reinforcement component 400 is provided on the top of the purification chamber 110, and the reinforcement component 400 includes a polygonal plate 410 connected to the top of the purification chamber 110, and a plurality of steel plates 420 connected between the purification chamber 110 and the polygonal plate 410. The plurality of steel plates 420 are respectively attached to the front and rear sides of the water distribution pipe 120. The reinforcement component 400 can improve the installation firmness of the water distribution pipe 120.

[0043] Embodiment three:

[0044] Combination Figure 1 , 3 and Figure 4 As shown, in the above embodiment, a sealing sleeve 700 is installed on one side of the purification chamber 110, and the sealing sleeve 700 is sleeved on the outside of the filter mechanism 200. The sealing sleeve 700 can prevent the leakage of unpurified exhaust gas.

[0045] Specifically, a plurality of springs 220 are equally spaced and arranged in a ring shape around one end of the air pipe 210 . The springs 220 are located inside the sealing sleeve 700 . The layout design of the springs 220 allows the air pipe 210 to swing flexibly, thereby improving the cleaning effect of the air pipe 210 and the filter 230 .

[0046] Working principle and use process of the utility model: When the device is put into actual use, before the tail gas enters the purification chamber 110, it is first processed through the external cooling chamber to cool and recover the nitric acid in the tail gas, reducing the amount of tail gas treatment, and then this part of the tail gas is injected into the screw cover 800, and then flows through the annular cylindrical cavity and is filtered by the filter screen 230, and then the dust particles in the tail gas are screened out, and then enter the purification chamber 110, and undergo the spraying of multiple showers 130, thereby achieving the purification of the tail gas, and then open the solenoid valve 60 0, discharge the purified air and liquid water to avoid high pressure in the purification chamber 110, and then when cleaning the dust in the air pipe 210, remove the screw cover 800, then pull out the filter 230, and then follow the moving scraper 320 to clean the dust on the inner wall of the air pipe 210, and then shake the outer end of the air pipe 210 up and down, and multiple springs 220 increase the shaking frequency of the air pipe 210, thereby discharging all the dust in the filter 230 and the air pipe 210, improving the cleaning effect and ensuring the subsequent filtering effect of the filter 230.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A nitric acid tail gas recovery and purification device, characterized in that: include: A purification mechanism (100), the purification mechanism (100) comprising a purification chamber (110), a water distribution pipe (120) connected to the top of the purification chamber (110), and a plurality of shower heads (130) connected to and in communication with the water distribution pipe (120), wherein the water outlet ends of the shower heads (130) are located inside the purification chamber (110); A filtering mechanism (200), the filtering mechanism (200) comprising an air pipe (210) transversely penetrating one side of the purification chamber (110), a plurality of springs (220) connected between the purification chamber (110) and the air pipe (210), a filter screen (230) movably mounted inside the air pipe (210), a sleeve (240) sleeved on the outside of the filter screen (230) and in contact with the inner wall of the air pipe (210), and a blocking disk (250) mounted inside the filter screen (230), wherein an annular cylindrical cavity is formed between the air pipe (210) and the filter screen (230); A cleaning mechanism (300) comprises a plurality of rod bodies (310) installed on one side of the air pipe (210) and a scraper (320) connected between the three rod bodies (310).

2. A nitric acid tail gas recovery and purification equipment according to claim 1, characterized in that: A reinforcement component (400) is provided on the top of the purification chamber (110), and the reinforcement component (400) includes a polygonal plate (410) connected to the top of the purification chamber (110), and a plurality of steel plates (420) connected between the purification chamber (110) and the polygonal plate (410), and the plurality of steel plates (420) are respectively attached to the front and rear sides of the water distribution pipe (120).

3. A nitric acid tail gas recovery and purification equipment according to claim 1, characterized in that: Two slope plates (500) are installed at the bottom of the inner cavity of the purification chamber (110), and the two slope plates (500) are vertically symmetrical with respect to the vertical center plane of the purification chamber (110).

4. A nitric acid tail gas recovery and purification equipment according to claim 1, characterized in that: A liquid outlet pipe communicating with the interior of the purification chamber (110) is installed at the bottom of the purification chamber (110), and a solenoid valve (600) is installed on the liquid outlet pipe.

5. A nitric acid tail gas recovery and purification equipment according to claim 1, characterized in that: A sealing sleeve (700) is installed on one side of the purification chamber (110), and the sealing sleeve (700) is sleeved on the outside of the filtering mechanism (200).

6. A nitric acid tail gas recovery and purification equipment according to claim 5, characterized in that: A plurality of springs (220) are arranged at equal intervals and in a ring shape around one end of the air pipe (210), and the springs (220) are located inside the sealing sleeve (700).

7. The nitric acid tail gas recovery and purification equipment according to claim 1, characterized in that: The outer end of the air pipe (210) is screwed with a screw cap (800), and the interior of the screw cap (800) is communicated with the interior of the annular column cavity.

8. The nitric acid tail gas recovery and purification equipment according to claim 1, characterized in that: The scraper (320) is provided in plurality, and the plurality of scrapers (320) are arranged in groups of three to three, and are provided in two groups. The two groups of scrapers (320) are laterally symmetrical about the horizontal center plane of the filter screen (230), and the outer edges of the scrapers (320) are movably fitted with the inner wall of the air pipe (210).

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