WO2022266940A1

WO2022266940A1 - Nitrification device for mesitylene production

Info

Publication number: WO2022266940A1
Application number: PCT/CN2021/102110
Authority: WO
Inventors: 谈勇
Original assignee: 鹏辰新材料科技股份有限公司
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-12-29
Also published as: DE212021000100U1

Abstract

A nitrification device for mesitylene production, comprising a device housing. A motor is fixedly mounted in the middle of the top of the device housing; a nitrated compound inlet and a mixed acid inlet are respectively formed in the top of the device housing on two sides of the motor; a nitrification cavity and a heat dissipation cavity are formed inside the device housing; a rotating plate is rotatably mounted at a middle position inside the nitrification cavity; rotating rods are fixedly mounted on the circumferential surface of the rotating plate; a cross stirring paddle is rotatably mounted inside the nitrification cavity on one side of each rotating rod; and a connecting rod is fixedly mounted on a side surface of the cross stirring paddle. According to the present invention, a series of stirring structures are provided and a heating resistance wire is started by using rotating inertia, so that the stirring contact area can be effectively increased, a mixture is heated to a temperature suitable for a nitrification reaction, the nitrification effect is enhanced, and the nitrification efficiency is improved; and the synchronous transfer of high temperature, cooling, and heat dissipation can be achieved while heating is performed, so that the inside of the nitrification cavity can be always maintained at a temperature suitable for a nitrification reaction.

Description

A kind of nitration device for the production of mesitylene

technical field

The utility model relates to the field of nitration devices, in particular to a nitration device used for the production of mesitylene.

Background technique

Mesitylene is an organic compound with a molecular formula of C9H12, a colorless transparent liquid, insoluble in water, soluble in ethanol, and soluble in benzene, ether, and acetone in any proportion. It is used for the production of trimesic acid and antioxidants, Epoxy resin curing agents, polyester resin stabilizers, alkyd resin plasticizers and dyes, etc., among which the more important process is the nitration process, nitration refers to the reaction of introducing nitro groups into organic compound molecules, but the common ones on the market The nitration device for the production of mesitylene still has the following deficiencies in actual use: 1. Most of the existing nitration devices for the production of mesitylene are nitration reaction kettles. The functions of such devices are relatively single in actual use, and the internal stirring device The stirring area is small, and the stirring effect is poor; 2. Mesitylene needs to be heated to a suitable temperature during the nitration process to maximize the production rate of mesitylene, but the electric heating mechanism inside the common nitration device is used for a long time. It will lead to higher and higher internal temperature, which will not only affect the nitrification work of internal mesitylene production, but also cause damage to the device and serious accidents in severe cases.

Utility model content

(1) Purpose of utility model

In order to solve the technical problems in the background technology, the utility model proposes a nitration device for the production of mesitylene, which can not only effectively increase the stirring contact by providing a series of stirring structures and using the rotating inertia to start the heating resistance wire area, it can heat the mixture to a temperature suitable for nitrification reaction, increase the nitrification effect, and improve the nitrification efficiency. By realizing the simultaneous transmission, cooling and heat dissipation of high temperature while heating, the inside of the nitrification cavity can always be kept suitable for nitrification. the temperature of the reaction.

(2) Technical solution

The utility model provides a nitration device for the production of mesitylene. A motor is fixedly installed in the middle of the top of the device housing. The top of the device housing on both sides of the motor is respectively provided with a nitrate inlet and a mixed acid inlet. The device housing There is a nitrification cavity and a heat dissipation cavity inside the nitrification cavity. A rotating plate is installed in the middle of the nitrification cavity. A rotating rod is fixedly installed on the circumferential surface of the rotating plate. Stirring paddle, the side of the cross paddle is fixedly installed with a connecting rod, and a word stirring sleeve rod is installed on the connecting rod, and the two ends of the one word stirring sleeve rod are provided with installation grooves, and the inside of the installation groove is fixedly installed with a heating resistance wire. The outer side of the resistance wire is slidingly installed with a telescopic stirring rod, and the inner side of the telescopic stirring rod is fixedly installed with a metal contact block. One end of the telescopic stirring rod is provided with a fixed block. There is a metal heat conduction plate, a condensation pipe is fixedly installed inside the heat dissipation cavity between the heat conduction pillars, and a heat dissipation through hole is opened on the surface of the device shell outside the heat dissipation cavity.

Preferably, sealing covers are fixedly installed at both the nitrate inlet and the mixed acid inlet, and a button assembly is fixedly installed on the top of the device housing.

Preferably, the surface of the rotating plate is fixedly connected to the output end of the motor, there are five rotating rods, six cross paddles, and four inline stirring sleeve rods are provided on each cross paddle.

Preferably, one end of the telescopic stirring rod is fixedly connected to the inside of the inline stirring sleeve rod through a spring.

Preferably, both the heat conduction pillar and the metal heat conduction plate are made of copper heat conduction material, and one end of the heat conduction pillar extends to the inside of the nitrification cavity, the metal heat conduction plate is installed on the inner wall of the nitrification cavity, and there are three metal heat conduction plates.

Preferably, an electric heating plate is fixedly installed on the inner wall of the nitrification cavity on one side of the metal heat conducting plate.

Preferably, there are three condensation pipes and three heat dissipation through holes.

Compared with the prior art, the above-mentioned technical solution of the utility model has the following beneficial technical effects: the utility model not only can effectively increase the stirring contact area by providing a series of stirring structures and using the rotating inertia to start the heating resistance wire, It is more able to heat the mixture to a temperature suitable for the nitrification reaction, increase the nitrification effect, and improve the nitrification efficiency. By realizing the simultaneous transmission, cooling and heat dissipation of high temperature while heating, the inside of the nitrification cavity can always maintain a suitable nitrification reaction temperature. temperature.

Description of drawings

Fig. 1 is a structural schematic diagram of a nitration device for the production of mesitylene proposed by the utility model.

Fig. 2 is a sectional view of a nitration device for mesitylene production proposed by the utility model.

Fig. 3 is a partial enlarged view of A in Fig. 2 of a nitration device for the production of mesitylene proposed by the utility model.

Fig. 4 is a partial enlarged view of B in Fig. 2 of a nitration device for the production of mesitylene proposed by the utility model.

Fig. 5 is a partially enlarged view of C in Fig. 3 of a nitration device for the production of mesitylene proposed by the utility model.

Reference signs: 1. Device housing; 2. Motor; 3. Nitrification inlet; 4. Mixed acid inlet; 5. Nitrification cavity; 6. Heat dissipation cavity; 7. Rotary plate; 8. Rotary rod; Stirring paddle; 10, connecting rod; 11, one-word stirring rod; 12, installation groove; 13, heating resistance wire; 14, telescopic stirring rod; 15, metal contact block; 16, fixed block; 17, heat conduction pillar; 18 1. Metal heat conducting plate; 19. Electric heating plate; 20. Condenser tube; 21. Heat dissipation through hole.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and not intended to limit the scope of the present invention. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessarily confusing the concept of the present invention.

As shown in Figure 1-5, a kind of nitration device for the production of mesitylene proposed by the utility model has a motor 2 fixedly installed in the middle of the top of the device housing 1, and the tops of the device housing 1 on both sides of the motor 2 are respectively A nitrification compound inlet 3 and a mixed acid inlet 4 are opened, and a nitrification cavity 5 and a heat dissipation cavity 6 are opened inside the device housing 1, and a rotating plate 7 is installed in the middle of the nitrifying cavity 5, and the circumference of the rotating plate 7 A rotating rod 8 is fixedly installed on the surface, and a cross stirring paddle 9 is installed rotating inside the nitrification cavity 5 on one side of the rotating rod 8, and a connecting rod 10 is fixedly mounted on the side of the cross paddle 9, and a word stirring sleeve is installed on the connecting rod 10 for rotation Rod 11, the two ends of one-word stirring sleeve rod 11 are provided with installation groove 12, and the inside of installation groove 12 is fixedly installed with heating resistance wire 13, and the outer side of heating resistance wire 13 is slidingly installed with telescopic stirring rod 14, and telescopic stirring rod 14 A metal contact block 15 is fixedly installed on the inner side, a fixed block 16 is arranged at one end of the telescopic stirring rod 14, a heat conduction strut 17 is fixedly installed inside the cooling cavity 6, and one end of the heat conduction strut 17 is fixedly connected with a metal heat conduction plate 18, and the heat conduction strut 17 A condensation pipe 20 is fixedly installed inside the heat dissipation cavity 6 , and a heat dissipation through hole 21 is opened on the surface of the device housing 1 outside the heat dissipation cavity 6 .

In the utility model, before use, first check the use safety of the parts inside the device, then carry the device to the place where it needs to be used, place it stably and connect it to an external power supply to start using. Inlet 4 puts the nitrates and catalysts that need to be put into the nitrification cavity 5 inside the device housing 1, then controls the motor 2 to work through the button assembly, and closes the sealing cover. At this time, the motor 2 drives the rotating plate 7 to rotate at a high speed. The plate 7 drives the rotating rod 8 to rotate at a high speed, and the rotating rod 8 drives the cross stirring paddle 9 to rotate at a high speed. During the extension process, the metal contact block 15 moves to one end of the heating resistance wire 13, so that the working length of the heating resistance wire 13 is extended. At this time, the heating resistance wire 13 generates high temperature, and the heating is started by providing a series of stirring structures and utilizing the inertia of rotation. The resistance wire 13 can not only effectively increase the stirring contact area, but also heat the mixture to a temperature suitable for the nitrification reaction, increase the nitrification effect, and improve the nitrification efficiency. The high temperature is transmitted, so that the high temperature can be transmitted to the inside of the heat dissipation cavity 6, and is discharged through the heat dissipation through hole 21 after being initially cooled by the condensation pipe 20, and the synchronous transmission, cooling and heat dissipation of the high temperature can be realized while heating, and the nitrification can be achieved. The inside of the cavity 5 is always kept at a temperature suitable for the nitrification reaction.

In an optional embodiment, sealing caps are fixedly installed at the nitrate inlet 3 and the mixed acid inlet 4 , and a button assembly is fixedly installed on the top of the device housing 1 .

It should be noted that by installing sealing covers at the nitrate inlet 3 and the mixed acid inlet 4, it can ensure that the inside of the device is in a sealed state during the nitrification operation, and the button assembly can facilitate the user to operate the device.

In an optional embodiment, the surface of the rotating plate 7 is fixedly connected to the output end of the motor 2, five rotating rods 8 are provided, six cross paddles 9 are provided, and each cross paddle 9 is provided with Four in-line stirring sleeve rods 11.

It should be noted that by providing a plurality of cross paddles 9 and a plurality of inline stirring sleeve rods 11, the stirring contact surface of the device during mixing and stirring is increased, and the efficiency and effect of stirring are increased.

In an optional embodiment, one end of the telescopic stirring rod 14 is fixedly connected to the inside of the inline stirring sleeve rod 11 through a spring.

It should be noted that the spring can facilitate the automatic reset of the telescopic stirring rod 14 after the motor 2 stops working.

In an optional embodiment, both the heat conduction pillar 17 and the metal heat conduction plate 18 are made of copper heat conduction material, and one end of the heat conduction pillar 17 extends to the inside of the nitrification cavity 5, and the metal heat conduction plate 18 is installed in the nitrification cavity 5 There are three metal heat conducting plates 18 on the inner wall.

It should be noted that the high temperature inside the nitrification cavity 5 can be quickly and effectively transferred by providing a plurality of heat conduction pillars 17 and metal heat conduction plates 18 .

In an optional embodiment, an electric heating plate 19 is fixedly installed on the inner wall of the nitrification cavity 5 on one side of the metal heat conducting plate 18 .

It should be noted that the nitrates in the nitration cavity 5 can be quickly heated by the electric heating plate 19 .

In an optional embodiment, there are three condensation pipes 20 and three cooling through holes 21 are opened.

It should be noted that the high temperature inside the nitrification cavity 5 can be quickly dissipated by providing three condensation pipes 20 and three heat dissipation through holes 21 .

It should be understood that the above specific embodiments of the present utility model are only used to illustrate or explain the principle of the present utility model, but not to limit the present utility model. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model shall be included in the protection scope of the present utility model. Furthermore, the appended claims are intended to cover all changes and modifications that come within the scope and boundaries of the appended claims, or equivalents of such scope and boundaries.

Claims

A nitration device for the production of mesitylene, characterized in that it comprises a device housing (1), a motor (2) is fixedly installed in the middle of the top of the device housing (1), and the devices on both sides of the motor (2) The top of the housing (1) is respectively provided with a nitrate inlet (3) and a mixed acid inlet (4), and the inside of the device housing (1) is provided with a nitrification cavity (5) and a cooling cavity (6), and the nitrification cavity ( 5) A rotating plate (7) is installed in the middle position of the interior, and a rotating rod (8) is fixedly installed on the peripheral surface of the rotating plate (7). There is a cross paddle (9), and the side of the cross paddle (9) is fixedly equipped with a connecting rod (10). Two ends are provided with mounting groove (12), and the inside of mounting groove (12) is fixedly installed with heating resistance wire (13), and the outer side of heating resistance wire (13) is slidingly installed with telescopic stirring rod (14), telescopic stirring rod ( The inner side of 14) is fixedly equipped with a metal contact block (15), and one end of the telescopic stirring rod (14) is provided with a fixed block (16). One end of 17) is fixedly connected with a metal heat conduction plate (18), and the inside of the heat dissipation cavity (6) between the heat conduction pillars (17) is fixedly installed with a condensation pipe (20), and the device housing outside the heat dissipation cavity (6) ( 1) There are cooling through holes (21) on the surface.
A kind of nitration device for the production of mesitylene according to claim 1, characterized in that, the nitrate inlet (3) and the mixed acid inlet (4) are all fixedly equipped with a sealing cover, the device housing (1) A button assembly is fixedly installed on the top.
A kind of nitration device for the production of mesitylene according to claim 1, characterized in that, the surface of the rotating plate (7) is fixedly connected with the output end of the motor (2), and the rotating rod (8) is provided with five , the cross paddle (9) is provided with six, and each cross paddle (9) is provided with four inline stirring sleeve rods (11).
A nitration device for mesitylene production according to claim 1, characterized in that one end of the telescopic stirring rod (14) is fixedly connected to the inside of the inline stirring sleeve rod (11) through a spring.
A kind of nitration device for the production of mesitylene according to claim 1, characterized in that, the heat conduction pillar (17) and the metal heat conduction plate (18) are all made of copper heat conduction material, and one end of the heat conduction pillar (17) Extending to the inside of the nitrification cavity (5), the metal heat conduction plate (18) is installed on the inner wall of the nitrification cavity (5), and there are three metal heat conduction plates (18).
A kind of nitrification device for the production of mesitylene according to claim 1, characterized in that an electric heating plate (19) is fixedly installed on the inner wall of the nitrification cavity (5) on one side of the metal heat conducting plate (18).
A kind of nitration device for the production of mesitylene according to claim 1, characterized in that there are three condenser pipes (20) and three heat dissipation through holes (21).