Waste gas purification treatment device in nitrophenylacetic acid production

Abstract

The utility model relates to the technical field of nitrophenylacetic acid production, and discloses a waste gas purification treatment device in nitrophenylacetic acid production, which comprises a case, a gas inlet pipe and a gas outlet pipe, the gas inlet pipe and the gas outlet pipe are respectively and fixedly connected on the side wall of the case, two connecting frames are fixedly connected inside the case, and the two connecting frames are respectively and fixedly connected on the side wall of the case. A first filter screen is arranged in the connecting frame on the left side, a second filter screen is arranged in the connecting frame on the right side, two partition plates are arranged in the case, a gap between the two partition plates is filled with a reaction agent, and an air pump is fixedly connected to the side wall of the partition plate on the left side. According to the air pump provided by the utility model, the waste gas is injected into the gap between the two partition plates through the gas conveying pipe, so that the waste gas can be injected into the reaction medicament to react with the reaction medicament, harmful substances can be separated out, and the purification treatment effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrophenyl acetic acid production technical field especially relates to a nitrophenyl acetic acid production waste gas purification treatment device. BACKGROUND

[0002] Nitrophenyl acetic acid is an important organic compound, its molecular structure contains nitro and phenyl acetic acid group, according to the difference of nitro substitution position on benzene ring, there are o-nitrophenyl acetic acid, m-nitrophenyl acetic acid and p-nitrophenyl acetic acid and various isomers, nitrophenyl acetic acid has o-nitrophenyl acetic acid and p-nitrophenyl acetic acid and isomer, its production method is various, and needs to pay attention to waste water treatment problem in the production process.

[0003] In the prior art, in the production process of nitrophenyl acetic acid, the generated waste gas needs to be cleaned, and part of the waste gas is difficult to be adsorbed and filtered through the filter screen, needs to be reacted through reagent to precipitate harmful substances, and the treatment is relatively slow, which will affect the production efficiency. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of waste gas purification treatment devices in nitrophenyl acetic acid production, to solve the problem that in prior art, in the production process of nitrophenyl acetic acid, the generated waste gas needs to be cleaned, and part of the waste gas is difficult to be adsorbed and filtered through the filter screen, needs to be reacted through reagent to precipitate harmful substances, and the treatment is relatively slow, which will affect the production efficiency.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of waste gas purification treatment device in nitrophenyl acetic acid production, including machine case, intake pipe and outlet pipe, the intake pipe and outlet pipe are respectively fixedly connected on the side wall of machine case, the inside of machine case is fixedly connected with two connecting frames, the inside of left connecting frame is equipped with first filter screen, the inside of right connecting frame is equipped with second filter screen, the inside of machine case is equipped with two baffle, the clearance of two baffle is filled with reaction reagent, the side wall of left baffle is fixedly connected with gas pump, the side wall of gas pump is fixedly connected with gas pipe, the end of gas pipe away from gas pump extends to the clearance of two baffle.

[0007] Preferably, the pipe wall of the gas pipe at the clearance of the two baffles is fixedly connected with a plurality of exhaust pipes, and the top end inner wall of the exhaust pipe is provided with an exhaust hole.

[0008] Preferably, the top end inner wall of the exhaust pipe is fixedly connected with a spring, the bottom of the spring is fixedly connected with a piston, and the piston is slidingly arranged in the inner wall of the exhaust pipe.

[0009] Preferably, the inner wall of the piston is provided with a connecting hole, and the inner wall of the connecting hole is fixedly connected with a movable air pipe.

[0010] Preferably, the top wall of the movable air pipe extends to the upper side of the exhaust pipe through the exhaust hole and is provided with an air outlet hole.

[0011] Preferably, the inner wall of the right partition plate is provided with a communication hole.

[0012] Compared with the prior art, the utility model provides a waste gas purification treatment device in nitrophenyl acetic acid production, has the following beneficial effects:

[0013] 1、 this waste gas purification treatment device in nitrophenyl acetic acid production, through the air pump, waste gas is filled to the clearance of two partition plates through the gas pipe, can make waste gas fill to the reaction reagent, make it react with reaction reagent, can precipitate harmful substances, can improve purification treatment effect.

[0014] 2、 this waste gas purification treatment device in nitrophenyl acetic acid production, when the air pressure inside the exhaust pipe increases, the piston can push the spring compression, can make movable air pipe extend to the outside of exhaust pipe, make high pressure gas exhaust through air outlet hole.

[0015] 3、 this waste gas purification treatment device in nitrophenyl acetic acid production, when the air pressure reduces, the spring can push the piston down through the elastic force of itself and drive movable air pipe to move down, make air outlet hole extend to the inside of exhaust pipe, can prevent reaction reagent from flowing back to the inside of exhaust pipe and gas pipe, influence gas pump. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic view of a waste gas purification treatment device in nitrophenyl acetic acid production is provided for the utility model;

[0017] Figure 2 A structure sectional view of a waste gas purification treatment device in nitrophenyl acetic acid production is provided for the utility model;

[0018] Figure 3 For Figure 2 The structure enlarged schematic view of partial A part.

[0019] In the drawing: 1 cabinet, 2 air inlet pipe, 3 air outlet pipe, 4 connecting frame, 5 first filter screen, 6 second filter screen, 7 partition plate, 8 reaction reagent, 9 air pump, 10 gas pipe, 11 exhaust pipe, 12 spring, 13 piston, 14 movable air pipe, 15 air outlet hole. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Referring to Figures 1-3 A waste gas purification treatment device in nitrophenyl acetic acid production, including case 1, air inlet pipe 2 and air outlet pipe 3, air inlet pipe 2 and air outlet pipe 3 are fixedly connected on the lateral wall of case 1 respectively, two connecting frames 4 are fixedly connected in the inside of case 1, the inside of left connecting frame 4 is equipped with first filter screen 5, the inside of right connecting frame 4 is equipped with second filter screen 6, two baffle plates 7 are arranged in the inside of case 1, the clearance of two baffle plates 7 is filled with reaction reagent 8, air pump 9 is fixedly connected on the lateral wall of left baffle plate 7, air pump 9 is fixedly connected with air conveying pipe 10 on the lateral wall, the end of air conveying pipe 10 away from air pump 9 extends to the clearance of two baffle plates 7, and the inner wall of right baffle plate 7 is provided with a communication hole.

[0022] A plurality of exhaust pipes 11 are fixedly connected on the pipe wall of the clearance of two baffle plates 7, and the top end inner wall of exhaust pipe 11 is provided with an exhaust hole.

[0023] When in use, the waste gas is introduced into the inside of case 1 through air inlet pipe 2, and the waste gas is preliminarily filtered through first filter screen 5, and the waste gas is injected into the clearance of two baffle plates 7 through air conveying pipe 10 by air pump 9, so that the waste gas is injected into reaction reagent 8, reacts with reaction reagent 8, and harmful substances are precipitated, so that the purification treatment effect can be improved, and then discharged through the communication hole to second filter screen 6, and then discharged through air outlet pipe 3 after adsorption and filtration, so that the treated waste gas can be discharged, the horizontal plane of reaction reagent 8 is lower than air pump 9, so that the reagent backflow can be prevented, the continuous use of air pump 9 is ensured, exhaust pipe 11 can assist exhaust, the uniform contact of waste gas and reaction reagent 8 is ensured, and the reaction effect is improved.

[0024] In order to prevent reaction reagent 8 from flowing back to the inside of exhaust pipe 11 and air conveying pipe 10, as shown in Figures 1-3 The top end inner wall of exhaust pipe 11 is fixedly connected with spring 12, the bottom of spring 12 is fixedly connected with piston 13, piston 13 is slidingly arranged in the inner wall of exhaust pipe 11, the inner wall of piston 13 is provided with connecting hole, piston 13 is fixedly connected with movable air pipe 14 on the inner wall of connecting hole, the bottom end pipe wall of movable air pipe 14 extends below piston 13, and the top end pipe wall of movable air pipe 14 extends above exhaust pipe 11 through exhaust hole and is provided with air outlet hole 15.

[0025] When the air pressure inside the exhaust pipe 11 increases, the piston 13 can push the spring 12 to compress, the movable air pipe 14 can extend to the outside of the exhaust pipe 11, and the high-pressure gas can be discharged through the air outlet hole 15; when the air pressure decreases, the spring 12 can push the piston 13 to slide downward by the elastic force of the spring 12, the movable air pipe 14 can move downward, the air outlet hole 15 can extend to the inside of the exhaust pipe 11, and the reaction medicament 8 can be prevented from flowing back to the inside of the exhaust pipe 11 and the gas conveying pipe 10, and the gas pump 9 can be prevented from being affected.

[0026] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, and all of them should be covered within the protection scope of the present application.

Claims

1. A device for purifying exhaust gas in the production of nitrophenylacetic acid, comprising a cabinet (1), an inlet pipe (2) and an outlet pipe (3), characterized in that: The air inlet pipe (2) and the air outlet pipe (3) are fixedly connected to the side wall of the cabinet (1), two connecting frames (4) are fixedly connected to the inside of the cabinet (1), the inside of the left connecting frame (4) is provided with a first filter screen (5), the inside of the right connecting frame (4) is provided with a second filter screen (6), two partitions (7) are arranged in the cabinet (1), the gap between the two partitions (7) is filled with a reaction reagent (8), a gas pump (9) is fixedly connected to the side wall of the left partition (7), a gas conveying pipe (10) is fixedly connected to the side wall of the gas pump (9), and one end of the gas conveying pipe (10) away from the gas pump (9) extends to the gap between the two partitions (7).

2. A device for purifying exhaust gas in the production of nitrophenylacetic acid according to claim 1, characterized in that: A plurality of exhaust pipes (11) are fixedly connected to the pipe wall at the gap between the two partitions (7), and an exhaust hole is formed in the top end inner wall of the exhaust pipe (11).

3. A device for purifying exhaust gas in the production of nitrophenylacetic acid according to claim 2, characterized in that: A spring (12) is fixedly connected to the top end inner wall of the exhaust pipe (11), a piston (13) is fixedly connected to the bottom of the spring (12), and the piston (13) is slidably arranged in the inner wall of the exhaust pipe (11).

4. A device for purifying exhaust gas in the production of nitrophenylacetic acid according to claim 3, characterized in that: A connecting hole is formed in the inner wall of the piston (13), a movable gas pipe (14) is fixedly connected to the inner wall of the connecting hole of the piston (13), and the bottom end pipe wall of the movable gas pipe (14) extends below the piston (13).

5. A device for purifying exhaust gas in the production of nitrophenylacetic acid according to claim 4, characterized in that: The top end pipe wall of the movable gas pipe (14) extends above the exhaust pipe (11) through the exhaust hole and is provided with an air outlet hole (15).

6. A device for purifying exhaust gas in the production of nitrophenylacetic acid according to claim 1, characterized in that: A communication hole is formed in the inner wall of the right partition (7).

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