CN213761655U - A original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid - Google Patents
A original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid Download PDFInfo
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- CN213761655U CN213761655U CN202022635672.3U CN202022635672U CN213761655U CN 213761655 U CN213761655 U CN 213761655U CN 202022635672 U CN202022635672 U CN 202022635672U CN 213761655 U CN213761655 U CN 213761655U
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Abstract
The utility model relates to a chemical production field specifically discloses an original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid, including the agitator tank, sealed lid is installed to the upper end of agitator tank, the last surface mounting of sealed lid has the material feeding mouth, one side of material feeding mouth is located the last surface mounting of sealed lid has air under pressure pipe, and the opposite side of material feeding mouth is provided with temperature sensor, the upper end mid-mounting of sealed lid has the transmission pivot, high-pressure oxygen gas pitcher is installed to one side of agitator tank, and the front surface mounting of agitator tank has pressure sensor, the drain hole is installed to the bottom of agitator tank. Utilize the high-pressure oxygen jar to constantly let in high-pressure oxygen to the agitator tank is inside to constantly follow the bleed valve outwards to discharge with the gas that the inside oxygen content of agitator tank is lower, thereby can guarantee that the reaction of reactant is abundant, and the reaction carries out the phase time after, and the material that adds of whole device is independent with the pressurization operation, can guarantee that the reaction of inside raw materials is abundant.
Description
Technical Field
The utility model relates to a chemical production field specifically is an original paper mixing arrangement for processing of 2-nitro-4 methylsulfonyl benzoic acid.
Background
2-nitro-4-methylsulfonylbenzoic acid, also known as o-nitro-p-methylsulfonylbenzoic acid, is prepared by using 2-nitro-4-methylsulfonyltoluene as a raw material, air (oxygen-enriched air or oxygen) as an oxidant and aliphatic carboxylic acid as a solvent, forming a gas, liquid and solid three-phase reaction system under the action of a supported heteropolyacid-transition metal-halogen-formed multi-element catalytic system, and oxidizing the 2-nitro-4-methylsulfonyltoluene into the 2-nitro-4-methylsulfonylbenzoic acid.
However, when the 2-nitro-4-methylsulfonylbenzoic acid is prepared by using potassium permanganate, the potassium permanganate is large in dosage, high in price and high in production cost; a large amount of manganese dioxide byproduct is generated in the reaction process, the particles are fine, the filtration is difficult, the production environment is severe, and the reaction rate of the preparation by using liquid-phase air is too slow. Accordingly, one skilled in the art provides an original mixing device for 2-nitro-4-methylsulfonylbenzoic acid processing to solve the problems set forth in the background above.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid, includes the agitator tank, sealed lid is installed to the upper end of agitator tank, the last surface mounting of sealed lid has the material feeding mouth, the last surface mounting that one side of material feeding mouth is located sealed lid has the pressurized air pipe, and the opposite side of material feeding mouth is provided with temperature sensor, agitator motor is installed to one side of agitator tank, the upper end mid-mounting of sealed lid has the transmission pivot, high-pressure oxygen gas jar is installed to one side of agitator tank, and the front surface mounting of agitator tank has pressure sensor, the drain hole is installed to the bottom of agitator tank.
As a further aspect of the present invention: the pressure pipeline is installed to one side of agitator tank, and the opposite side of agitator tank installs the bleed valve, the internally mounted that the lower extreme of transmission pivot is located the agitator tank has the stirring paddle.
As a further aspect of the present invention: the zone of heating is installed to the inside wall of agitator tank, the inside that one side of zone of heating is located the agitator tank is provided with the cooling intermediate layer, cooling tube is installed in the outside of agitator tank.
As a further aspect of the present invention: the cooling pipeline is in through connection with the cooling interlayer, and the heating layer is externally connected with a power supply.
As a further aspect of the present invention: the air release valve and the pressurizing pipeline are communicated with the stirring tank, and the stirring blade is rotatably connected with the transmission rotating shaft.
As a further aspect of the present invention: the high-pressure oxygen tank is in through connection with the sealing cover through a pipeline, the pressurized air pipe is in through connection with the sealing cover, and the temperature sensor is in through connection with the sealing cover.
As a further aspect of the present invention: install driving belt between agitator motor and the transmission pivot, add the material mouth and sealed lid through connection, sealed lid is all installed with the upper end of adding the material mouth to pressurized air pipe, drain hole and agitator tank through connection.
Compared with the prior art, the beneficial effects of the utility model are that: the preparation method adopts a liquid-phase air method, uses a transition metal compound and a bromide as catalysts, and prepares the aromatic carboxylic acid by oxidizing alkyl aromatic hydrocarbon by air or oxygen, and has the main advantages of not consuming expensive chemical oxidant; the reaction selectivity is good; the pressure sensor observes that when the pressure in the stirring tank rises to the optimum pressure value of the reaction by continuously pressurizing the stirring tank, the pressurization of the stirring tank is stopped, high-pressure oxygen is continuously introduced into the stirring tank by using the high-pressure oxygen tank under the pressure, and gas with lower oxygen content in the stirring tank is continuously discharged from the air discharge valve, thereby ensuring the full reaction of reactants, after the reaction is carried out for a period of time, the metered mixed solution of acetic acid and acetaldehyde is slowly injected into the stirring tank by the high-pressure pump connected with the feeding port, the feeding and pressurizing operations of the whole device are independent, thereby ensuring the full reaction of the internal raw materials, and avoiding the problems of low internal oxygen content, limited generated oxidation capacity, relatively low conversion rate and complex post-treatment operation in the traditional liquid phase air method.
Drawings
FIG. 1 is a schematic diagram of the construction of a master mixing apparatus for the 2-nitro-4-methylsulfonylbenzoic acid process;
FIG. 2 is a cross-sectional view of a stirred tank in an original mixing apparatus for the processing of 2-nitro-4-methylsulfonylbenzoic acid;
FIG. 3 is a schematic diagram of the construction of the side wall of the mixing tank of the original mixing apparatus for the 2-nitro-4-methylsulfonylbenzoic acid process.
In the figure: 1. a stirring tank; 2. a cooling duct; 3. a sealing cover; 4. a feeding port; 5. a pressurized air tube; 6. a pressure sensor; 7. a high pressure oxygen tank; 8. a transmission rotating shaft; 9. a stirring motor; 10. a discharging port; 11. a temperature sensor; 101. a deflation valve; 102. a heating layer; 103. cooling the interlayer; 104. a pressurized conduit; 801. a stirring blade.
Detailed Description
Please refer to fig. 1-3, in an embodiment of the present invention, an original mixing device for processing 2-nitro-4-methylsulfonylbenzoic acid includes an agitator tank 1, a sealing cover 3 is installed at an upper end of the agitator tank 1, a charging opening 4 is installed on an upper surface of the sealing cover 3, a pressurized air pipe 5 is installed on an upper surface of the sealing cover 3 at one side of the charging opening 4, a temperature sensor 11 is disposed at the other side of the charging opening 4, an agitator motor 9 (model: Y-160L-6) is installed at one side of the agitator tank 1, a transmission rotating shaft 8 is installed at a middle portion of an upper end of the sealing cover 3, a high pressure oxygen tank 7 is installed at one side of the agitator tank 1, a pressure sensor 6 is installed at a front surface of the agitator tank 1, and a discharge opening 10 is installed at a bottom end of the agitator tank 1.
In fig. 1, 2, 3: a pressurizing pipeline 104 is arranged on one side of the stirring tank 1, a deflation valve 101 is arranged on the other side of the stirring tank 1, a stirring blade 801 is arranged inside the stirring tank 1 at the lower end of the transmission rotating shaft 8, a heating layer 102 is arranged on the inner side wall of the stirring tank 1, a cooling interlayer 103 is arranged inside the stirring tank 1 at one side of the heating layer 102, a cooling pipeline 2 is arranged outside the stirring tank 1, the cooling pipeline 2 is communicated with the cooling interlayer 103, the heating layer 102 is externally connected with a power supply, the deflation valve 101 and the pressurizing pipeline 104 are communicated with the stirring tank 1, the stirring blade 801 is rotatably connected with the transmission rotating shaft 8, a high-pressure oxygen tank 7 is communicated with a sealing cover 3 through a pipeline, a pressurizing air pipe 5 is communicated with the sealing cover 3, a temperature sensor 11 is communicated with the sealing cover 3, a transmission belt is arranged between the stirring motor 9 and the transmission rotating shaft 8, and a feeding port 4 is communicated with the sealing cover 3, the upper ends of the pressurized air pipe 5 and the feeding port 4 are both provided with sealing covers, and the discharging port 10 is communicated with the stirring tank 1.
In fig. 1: the feeding port 4 and the pressurized air pipe 5 are both in an airtight state after being used, so that the pressure intensity inside the stirring tank 1 is ensured to be constant, the stirring motor 9 is arranged outside the stirring tank 1 and drives the transmission rotating shaft 8 to rotate through a belt, and the stirring effect can be prevented from being influenced by the too large vibration amplitude of the stirring motor 9.
In fig. 2, 3: utilize cooling pipe 2 to carry out the water injection cooling to the cooling intermediate layer 103 of agitator tank 1 inside wall, can guarantee that the inside temperature of agitator tank 1 distributes and accelerates to indirect improvement production efficiency, bleed valve 101 can be discharging the inside air to 1 inside injection oxygen of agitator tank, thereby makes more abundant of reaction, avoids reducing the conversion, makes the problem that the aftertreatment operation is complicated appear.
The utility model discloses a theory of operation is: firstly, raw materials are put into a stirring tank 1 through a feeding port 4, then the feeding port 4 is sealed, a stirring motor 9 is utilized to drive a transmission rotating shaft 8 and a stirring paddle 801 to stir the raw materials, the mixing reaction of the raw materials is promoted, the raw materials in the stirring tank 1 are heated by a heating layer 102, the heating is stopped when the reaction temperature in the stirring tank 1 is controlled to be 100 ℃ by a temperature sensor 11, a high-pressure air pump is externally connected with a pressurizing pipeline 104 to continuously pressurize the inside of the stirring tank 1, the pressurization of the stirring tank 1 is stopped when the pressure in the stirring tank 1 is increased to 6.2MPa by a pressure sensor 6, high-pressure oxygen is continuously introduced into the stirring tank 1 by a high-pressure oxygen tank 7 under the pressure, gas with lower oxygen content in the stirring tank 1 is continuously discharged from a gas discharge valve 101, and after the reaction is carried out for a period of time, the mixed liquid of acetic acid and acetaldehyde is slowly injected into the stirring tank 1 by the high-pressure pump externally connected with the feeding port 4, after the internal reaction is sufficient, cold water is injected into the cooling interlayer 103 through the cooling pipeline 2 for cooling, the air pressure in the kettle is removed through the air release valve 101, the reaction materials are released through the material discharge port 10 and poured into a certain amount of water, and the product is obtained through filtering and drying.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. An original mixing device for processing 2-nitro-4-methylsulfonylbenzoic acid comprises a stirring tank (1), it is characterized in that the upper end of the stirring tank (1) is provided with a sealing cover (3), the upper surface of the sealing cover (3) is provided with a feeding port (4), one side of the feeding port (4) is positioned on the upper surface of the sealing cover (3) and is provided with a pressurized air pipe (5), and the other side of the feeding port (4) is provided with a temperature sensor (11), one side of the stirring tank (1) is provided with a stirring motor (9), a transmission rotating shaft (8) is arranged in the middle of the upper end of the sealing cover (3), a high-pressure oxygen tank (7) is arranged on one side of the stirring tank (1), and the front surface of the stirring tank (1) is provided with a pressure sensor (6), and the bottom end of the stirring tank (1) is provided with a discharge hole (10).
2. The original mixing device for 2-nitro-4-methylsulfonylbenzoic acid processing according to claim 1, wherein one side of the stirring tank (1) is installed with a pressurization pipeline (104), and the other side of the stirring tank (1) is installed with a deflation valve (101), and the lower end of the transmission rotating shaft (8) is located inside the stirring tank (1) and is installed with a stirring blade (801).
3. An original mixing device for 2-nitro-4-methylsulfonylbenzoic acid processing according to claim 1, characterized in that the inner side wall of the stirring tank (1) is provided with a heating layer (102), one side of the heating layer (102) is provided with a cooling interlayer (103) inside the stirring tank (1), and the outer side of the stirring tank (1) is provided with a cooling pipeline (2).
4. The original mixing device for 2-nitro-4-methylsulfonylbenzoic acid processing according to claim 3, characterized in that the cooling pipe (2) is connected to the cooling interlayer (103) in a penetrating manner, and the heating layer (102) is connected to an external power supply.
5. The original mixing device for processing 2-nitro-4-methylsulfonylbenzoic acid according to claim 2, characterized in that the air release valve (101) and the pressurization pipeline (104) are both connected to the stirring tank (1) in a penetrating manner, and the stirring blade (801) is rotatably connected to the transmission rotating shaft (8).
6. An original mixing device for 2-nitro-4-methylsulfonylbenzoic acid processing according to claim 1, characterized in that the high pressure oxygen tank (7) is connected to the sealing cap (3) through a pipe, the pressurized air pipe (5) is connected to the sealing cap (3) through a pipe, and the temperature sensor (11) is connected to the sealing cap (3) through a pipe.
7. An original mixing device for processing 2-nitro-4-methylsulfonylbenzoic acid according to claim 1, wherein a transmission belt is installed between the stirring motor (9) and the transmission shaft (8), the feeding port (4) is connected with a sealing cover (3) in a penetrating manner, the sealing covers are installed on the upper ends of the pressurized air pipe (5) and the feeding port (4), and the discharging port (10) is connected with the stirring tank (1) in a penetrating manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635672.3U CN213761655U (en) | 2020-11-16 | 2020-11-16 | A original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635672.3U CN213761655U (en) | 2020-11-16 | 2020-11-16 | A original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213761655U true CN213761655U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022635672.3U Active CN213761655U (en) | 2020-11-16 | 2020-11-16 | A original paper mixing arrangement for processing of 2-nitro-4 methylsulfonylbenzoic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213761655U (en) |
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- 2020-11-16 CN CN202022635672.3U patent/CN213761655U/en active Active
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