Process for the preparation of 3-methyl-2-aminobenzoic acid

Abstract

The utility model discloses a preparation device of 3 - methyl - 2 - amino benzoic acid, including processing jar, the inner top wall of processing jar is equipped with exhaust window, the upper surface of processing jar is fixedly installed with mounting frame through fastener. The harmful gas in the processing jar is discharged through the exhaust window, and the harmful gas is sucked into the purification shell through the exhaust fan. The harmful gas is purified through the multiple purification of the activated carbon adsorption layer, the carrier catalyst and the molecular sieve purification layer, which greatly improves the purification effect and avoids the pollution of the harmful gas directly discharged into the air. The screen and the filter screen are arranged to filter the discharged gas, prevent impurities from entering the purification shell and the connecting pipeline, and improve the sealing between the purification shell and the sealing cover plate and between the purification shell and the mounting frame. The harmful gas leakage is avoided, and the purification effect is further improved.

Description

Technical Field

[0001] This utility model relates to the field of processing and producing 3-methyl-2-aminobenzoic acid, and in particular to an apparatus for preparing 3-methyl-2-aminobenzoic acid. Background Technology

[0002] 3-Methyl-2-aminobenzoic acid is an important organic synthesis intermediate widely used in pharmaceuticals, dyes, pesticides and other industries. It has a stable chemical structure and high reactivity, and is an important raw material for the synthesis of a variety of compounds. In the preparation process, through specific process conditions and equipment, efficient and environmentally friendly production can be achieved.

[0003] However, 3-methyl-2-aminobenzoic acid produces toxic and harmful gases during processing. If these gases are directly released into the atmosphere, they will pose a potential threat and hazard to the health of operators and the environment. Therefore, we propose a preparation device for 3-methyl-2-aminobenzoic acid to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an apparatus for preparing 3-methyl-2-aminobenzoic acid, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An apparatus for preparing 3-methyl-2-aminobenzoic acid includes a processing tank with an exhaust vent on its inner top wall. A mounting frame is fixedly installed on the upper surface of the processing tank by fasteners, positioned directly above the exhaust vent. A mounting bracket is fixedly connected to the inner wall of the mounting frame, and an exhaust fan is fixedly installed on the bottom surface of the mounting bracket. A purification shell is fixedly connected to the upper surface of the mounting frame. An activated carbon adsorption layer, a carrier catalyst, and a molecular sieve purification layer are fixedly installed inside the purification shell. A sealing cover is fixedly connected to the upper surface of the purification shell, and a connecting pipe is fixedly connected to the upper surface of the sealing cover.

[0007] In a further embodiment, a sealing ring is fixedly connected to the inner wall of the purification housing, the outer surface of the sealing ring is in contact with the bottom surface of the sealing cover, and a sealing strip is fixedly connected to the outer surface of the purification housing, the bottom surface of the sealing strip being fixedly connected to the upper surface of the mounting frame.

[0008] In a further embodiment, a screen is fixedly installed on the inner wall of the exhaust window, and a filter screen is fixedly installed at the top end of the connecting pipe.

[0009] In a further embodiment, the inner top wall of the processing tank is fixedly connected to symmetrical mounting seats, and each mounting seat is fixedly equipped with a lighting lamp on its bottom surface.

[0010] In a further embodiment, a set of annularly arranged support columns are fixedly connected to the inner bottom wall of the processing tank, and a processing table is fixedly connected to the top of the set of support columns.

[0011] In a further embodiment, a support base is fixedly connected to the bottom surface of the processing tank, and an anti-slip pad is fixedly connected to the bottom surface of the support base. A set of annularly arranged fixing holes are provided on the upper surface of the support base and the upper surface of the anti-slip pad.

[0012] In a further embodiment, the front of the processing tank is hinged with symmetrical sealing doors by a pin, each sealing door has a groove on its front side, and each sealing door has an observation window on its front side.

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

[0014] This device features an exhaust vent to facilitate the removal of harmful gases from the processing tank. Simultaneously, a blower draws these gases into the purification housing, where they undergo multiple purification processes—including an activated carbon adsorption layer, a carrier catalyst, and a molecular sieve purification layer—significantly improving the purification effect and preventing direct emission of harmful gases into the air, thus avoiding environmental pollution. Screens and filters further filter the exhaust gases, preventing impurities from entering the purification housing and connecting pipes and causing blockages. Sealing rings and sealing strips enhance the sealing between the purification housing and the sealing cover, and between the purification housing and the mounting frame, preventing harmful gas leakage and further improving the purification effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention from a bottom view.

[0017] Figure 3 This is a three-dimensional structural diagram of the internal structure of the processing tank of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the internal structure of the mounting frame of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the internal structure of the purification shell of this utility model.

[0020] In the diagram: 1. Processing tank; 2. Exhaust window; 3. Mounting frame; 4. Mounting bracket; 5. Exhaust fan; 6. Purification shell; 7. Activated carbon adsorption layer; 8. Carrier catalyst; 9. Molecular sieve purification layer; 10. Sealing cover; 11. Connecting pipe; 12. Sealing ring; 13. Sealing strip; 14. Screen; 15. Filter screen; 16. Mounting base; 17. Lighting lamp; 18. Support column; 19. Processing table; 20. Support base; 21. Anti-slip mat; 22. Fixing hole; 23. Sealing door; 24. Groove; 25. Observation window. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] 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.

[0024] Please see Figure 1-5In this invention, the apparatus for preparing 3-methyl-2-aminobenzoic acid includes a processing tank 1. An exhaust vent 2 is provided on the inner top wall of the processing tank 1. A mounting frame 3 is fixedly installed on the upper surface of the processing tank 1 by fasteners. The mounting frame 3 is located directly above the exhaust vent 2. A mounting bracket 4 is fixedly connected to the inner wall of the mounting frame 3. An exhaust fan 5 is fixedly installed on the bottom surface of the mounting bracket 4. A purification shell 6 is fixedly connected to the upper surface of the mounting frame 3. An activated carbon adsorption layer 7, a carrier catalyst 8, and a molecular sieve purification layer 9 are fixedly installed inside the purification shell 6. A dense... The sealing cover 10 has a connecting pipe 11 fixedly connected to its upper surface. With the above scheme, after the exhaust fan 5 is started, the harmful gas in the processing tank 1 is extracted through the exhaust window 2 and then undergoes multiple purification treatments through the activated carbon adsorption layer 7, the carrier catalyst 8, and the molecular sieve purification layer 9 inside the purification shell 6. This ensures that the harmful gas is fully decomposed and adsorbed, and finally safely discharged through the connecting pipe 11. This effectively prevents the harmful gas generated during the preparation process from volatilizing into the air and causing environmental pollution. This design not only improves the safety of the preparation process but also effectively protects the health of the operators.

[0025] A sealing ring 12 is fixedly connected to the inner wall of the purification housing 6. The outer surface of the sealing ring 12 contacts the bottom surface of the sealing cover 10. A sealing strip 13 is fixedly connected to the outer surface of the purification housing 6. The bottom surface of the sealing strip 13 is fixedly connected to the upper surface of the mounting frame 3. The sealing ring 12 and the sealing strip 13 effectively improve the sealing performance between the purification housing 6, the sealing cover 10, and the mounting frame 3, preventing the leakage of harmful gases during the purification process and further ensuring the purification effect. At the same time, both the sealing ring 12 and the sealing strip 13 are made of corrosion-resistant and high-temperature-resistant materials, ensuring that they can maintain excellent sealing performance and stability during long-term use. A screen is fixedly installed on the inner wall of the exhaust window 2. A filter screen 15 is fixedly installed at the top of the connecting pipe 11. The screen 14 can effectively prevent large solid particles or impurities inside the processing tank 1 from entering the exhaust window 2, thereby avoiding blockage or damage to the exhaust fan 5 and subsequent purification process. The filter screen 15 further filters the gas discharged from the purification shell 6 to ensure that the final discharged gas is purer and free of fine particles. The inner top wall of the processing tank 1 is fixedly connected to symmetrical mounting bases 16. Each mounting base 16 is fixedly equipped with a lighting lamp 17 on its bottom surface. The lighting lamp 17 can provide sufficient light inside the processing tank 1, making it easier for staff to observe the reaction and the state of solid particles inside the processing tank 1.

[0026] A set of annularly arranged support columns 18 are fixedly connected to the inner bottom wall of the processing tank 1. A processing table 19 is fixedly connected to the top of each set of support columns 18. The upper surface of the processing table 19 has a groove for placing and fixing the reaction vessel or other necessary processing equipment. A support base 20 is fixedly connected to the bottom surface of the processing tank 1. An anti-slip pad 21 is fixedly connected to the bottom surface of the support base 20. A set of annularly arranged fixing holes 22 are provided on the upper surface of the upper surface of the support base 20 and the upper surface of the anti-slip pad 21. The fixing holes 22 facilitate the stable fixing of the entire preparation device to the required worktable surface, preventing slippage during operation. To prevent displacement or tipping during processing, and to improve the stability and safety of the process, the front of the processing tank 1 is hinged with symmetrical sealing doors 23 via pins. Each sealing door 23 has a groove 24 and an observation window 25 on its front. The observation window 25 allows the operator to directly observe the inside of the processing tank 1 without opening the sealing door 23, further improving the convenience and safety of operation. The design of the sealing door 23 ensures the airtightness of the processing tank 1, preventing the leakage of harmful gases during the preparation process and protecting the health and safety of the operators.

[0027] The working principle of this utility model is as follows:

[0028] In use, the raw materials are placed into the processing tank 1, and the exhaust fan 5 is started. The exhaust fan 5, in conjunction with the mounting bracket 4 and the mounting frame 3, draws air from the exhaust window 2. The exhaust fan 5 extracts the gas from the processing tank 1 through the exhaust window 2 and discharges it into the purification housing 6 through the connecting pipe 11. The gas then passes through the activated carbon adsorption layer 7, the carrier catalyst 8, and the molecular sieve purification layer 9 for purification. The activated carbon adsorption layer 7 adsorbs impurities in the gas, the carrier catalyst 8 catalytically decomposes harmful gases in the gas, and the molecular sieve purification layer 9 further purifies the gas, improving the purification effect and preventing harmful gases from being directly emitted into the air. In this process, the screen 14 prevents raw materials from entering the exhaust window 2 and causing blockage. The filter screen 15 filters the exhaust gas to prevent impurities in the gas from entering the connecting pipe 11 and causing blockage. The lighting 17 makes it easy for staff to observe the processing of raw materials in the processing tank 1. The anti-slip pad 21 improves the anti-slip effect of the support 20 and prevents the processing device from sliding during operation. The fixing hole 22 makes it easy to use bolts and other fasteners to fix the processing device, improving the stability of the processing device. The observation window 25 makes it easy for staff to observe the processing progress of raw materials in the processing tank 1.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

An apparatus for preparing 1,3-methyl-2-aminobenzoic acid, characterized in that: The equipment includes a processing tank (1), an exhaust window (2) on the inner top wall of the processing tank (1), an installation frame (3) fixedly installed on the upper surface of the processing tank (1) by fasteners, the installation frame (3) being located directly above the exhaust window (2), an installation bracket (4) fixedly connected to the inner wall of the installation frame (3), an exhaust fan (5) fixedly installed on the bottom surface of the installation bracket (4), a purification shell (6) fixedly connected to the upper surface of the installation frame (3), an activated carbon adsorption layer (7), a carrier catalyst (8) and a molecular sieve purification layer (9) fixedly installed inside the purification shell (6), a sealing cover plate (10) fixedly connected to the upper surface of the purification shell (6), and a connecting pipe (11) fixedly connected to the upper surface of the sealing cover plate (10).

2. The apparatus for preparing 3-methyl-2-aminobenzoic acid according to claim 1, characterized in that: A sealing ring (12) is fixedly connected to the inner wall of the purification housing (6). The outer surface of the sealing ring (12) is in contact with the bottom surface of the sealing cover plate (10). A sealing strip (13) is fixedly connected to the outer surface of the purification housing (6). The bottom surface of the sealing strip (13) is fixedly connected to the upper surface of the mounting frame (3).

3. The apparatus for preparing 3-methyl-2-aminobenzoic acid according to claim 1, characterized in that: A screen (14) is fixedly installed on the inner wall of the exhaust window (2), and a filter screen (15) is fixedly installed at the top of the connecting pipe (11).

4. The apparatus for preparing 3-methyl-2-aminobenzoic acid according to claim 1, characterized in that: The inner top wall of the processing tank (1) is fixedly connected with symmetrical mounting bases (16), and each mounting base (16) is fixedly equipped with a lighting lamp (17) on its bottom surface.

5. The apparatus for preparing 3-methyl-2-aminobenzoic acid according to claim 1, characterized in that: The bottom wall of the processing tank (1) is fixedly connected to a set of ring-shaped support columns (18), and the top of the set of support columns (18) is fixedly connected to a processing table (19).

6. The apparatus for preparing 3-methyl-2-aminobenzoic acid according to claim 1, characterized in that: The bottom surface of the processing tank (1) is fixedly connected to a support base (20), and the bottom surface of the support base (20) is fixedly connected to an anti-slip pad (21). The upper surface of the support base (20) is provided with a set of annularly arranged fixing holes (22).

7. The apparatus for preparing 3-methyl-2-aminobenzoic acid according to claim 1, characterized in that: The front of the processing tank (1) is hinged with symmetrical sealing doors (23) by a pin. Each sealing door (23) has a groove (24) on its front and an observation window (25) on its front.

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