Synthetic processing device of o-methylbenzoyl nitrile

Abstract

The utility model provides a synthesis processing device for o-methylbenzoyl nitrile, and belongs to the technical field of chemical production. Comprising a synthetic reaction kettle and a heating mechanism, a stirring motor is installed at the top of the synthetic reaction kettle, the heating mechanism comprises a heating jacket, the heating jacket is fixedly installed outside the synthetic reaction kettle and surrounds the synthetic reaction kettle, a hot water inlet pipe is fixedly installed on the heating jacket, and a hot water outlet pipe is fixedly installed on the hot water inlet pipe. The heating jacket is further provided with a hot water outlet pipe, and the interiors of the hot water inlet pipe and the hot water outlet pipe are both communicated with the interior of the heating jacket. According to the synthetic reaction kettle, the aluminum plate is mounted in the synthetic reaction kettle, meanwhile, the air inlet holes are formed in the synthetic reaction kettle, and heat enters the synthetic reaction kettle through the air inlet holes by heating the aluminum plate, so that the heat in the synthetic reaction kettle is rapidly increased, the reaction conditions are met, the influence of vibration on heating equipment is avoided, and the synthetic reaction kettle is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production, in particular to a synthesis processing device of o-methylbenzoyl nitrile. Background Art

[0002] o-Toluoyl nitrile is an organic compound. o-Toluoyl nitrile involves multiple fields, such as pesticides, medicine, and chemistry. In the pesticide field, o-Toluoyl nitrile is used to synthesize pesticides, such as some fungicides, which helps to improve the disease resistance of crops and ensure agricultural production. In the medicine field, it is used for the synthesis of specific drugs. In the chemical field, o-Toluoyl nitrile is used as a model compound to help researchers study related chemical reaction mechanisms and principles.

[0003] During the preparation process of o-methylbenzoyl nitrile, it will undergo a mixed reaction, a centrifugal operation, and a combination of organic phases, and the product will be obtained by first desolventizing and then distilling. In the preparation process of the mixed reaction, the raw materials are currently added to the reactor, and multiple raw materials react in the reactor to prepare a new product. During the reaction process, the reactor needs to be heated to meet the reaction conditions.

[0004] At present, the common heating method is electric heating plate heating. The electric heating plate is installed on the reactor to heat up the inside of the reactor through heat transfer. However, in actual use, it is found that the raw materials are constantly stirred in the reactor, and the stirring device is controlled by a motor. The operation of the motor will cause the whole to vibrate. Although the vibration amplitude is not large, long-term vibration will affect the electric heating plate, causing the internal structure of the electric heating plate to fall off, affecting the use. Therefore, a synthesis device of o-methylbenzoyl nitrile is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a synthesis and processing device of o-methylbenzoyl nitrile which overcomes the above technical problems or at least partially solves the above problems.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a synthesis processing device for o-methylbenzoyl nitrile, comprising a synthesis reaction kettle, and a stirring motor is installed on the top of the synthesis reaction kettle;

[0008] A heating mechanism, the heating mechanism comprising:

[0009] A heating jacket, which is fixedly installed on the outside of the synthesis reactor and surrounds the synthesis reactor;

[0010] A hot water inlet pipe, the hot water inlet pipe is fixedly mounted on the heating jacket, a hot water outlet pipe is also mounted on the heating jacket, and the interiors of the hot water inlet pipe and the hot water outlet pipe are both connected to the interior of the heating jacket;

[0011] An aluminum plate is fixedly mounted on the outer surface of the synthesis reactor and arranged inside the heating jacket. An air inlet is provided at the upper end of the outer surface of the synthesis reactor.

[0012] In a preferred solution, a stirring shaft is fixedly installed at the output end of the stirring motor, and a temperature transmitter and a pressure gauge are fixedly installed on the outer surface of the synthesis reactor. A feeding port is also arranged on the top of the synthesis reactor.

[0013] In a preferred embodiment, a feed pipeline is installed outside the synthesis reactor, and a switch valve is arranged on the feed pipeline.

[0014] In a preferred embodiment, a centrifuge is arranged outside the synthesis reactor, a solvent pipeline is installed on the centrifuge, a feed pipe is fixedly installed on the centrifuge, one end of the feed pipe is installed on the transfer pump, and the other end of the feed pipe is fixedly installed on the distillation reactor.

[0015] In a preferred embodiment, a primary condenser and a secondary condenser are installed outside the distillation kettle, and a solvent receiving tank, a product pre-distillation tank and a product finished product tank are installed outside the secondary condenser. The secondary condenser is connected to the solvent receiving tank, the product pre-distillation tank and the product finished product tank respectively through another feed pipe, and another switch valve is installed on the feed pipe.

[0016] A vacuum buffer tank is installed outside the solvent receiving tank, the product pre-distillation tank and the finished product tank. A feeding pipe is installed on the solvent receiving tank, the product pre-distillation tank and the finished product tank, and is connected to the vacuum buffer tank through the feeding pipe.

[0017] A vacuum unit is also installed outside the vacuum buffer tank, and the vacuum unit is used to combine the organic phase.

[0018] The interior of the distillation kettle is provided with a stirring shaft of the same specification as that of the interior of the synthesis reaction kettle, and a stirring blade is installed at the end of the stirring shaft.

[0019] The utility model provides a synthesis and processing device for o-methylbenzoyl nitrile, and its beneficial effects include:

[0020] 1. A heating jacket is installed on the outside of the synthesis reactor, and a hot water inlet pipe and a hot water outlet pipe are installed on the heating jacket, so that hot water can be added to the inside of the heating jacket conveniently. An aluminum plate is installed inside the synthesis reactor, and an air inlet is provided on the synthesis reactor. The aluminum plate is heated to allow heat to enter the inside of the synthesis reactor through the air inlet, so that the heat inside the synthesis reactor is quickly increased to achieve reaction conditions, thereby avoiding the influence of vibration on the heating equipment and facilitating use.

[0021] 2. By setting up a synthesis reactor, a centrifuge, a distillation kettle, two condensers, a solvent receiving tank, a product pre-distillation tank and a product finished product tank, and using them together with a vacuum buffer tank and a vacuum unit, a complete production line is formed, which is convenient for the preparation of p-methylbenzoyl nitrile and meets the needs of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the assembly line of the utility model;

[0024] Figure 2 This is a schematic diagram of the aluminum plate structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the outer surface structure of the synthetic reactor of the utility model;

[0026] In the figure: 1. synthesis reactor; 2. centrifuge; 3. transfer pump; 4. distillation kettle; 5. primary condenser; 6. secondary condenser; 7. solvent receiving tank; 8. product pre-distillation tank; 9. finished product tank; 10. vacuum buffer tank; 11. vacuum unit; 12. heating jacket; 13. hot water inlet pipe; 14. hot water outlet pipe; 15. stirring motor; 16. stirring shaft; 17. stirring blade; 18. temperature transmitter; 19. pressure gauge; 20. feed pipeline; 21. feeding port; 22. switch valve; 23. solvent pipeline; 24. feed pipe; 25. feeding pipe; 30. heating mechanism; 31. aluminum plate; 311. air inlet. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0028] Reference Figure 1-Figure 3 The utility model provides a technical solution: a synthesis processing device of o-methylbenzoyl nitrile, comprising a synthesis reactor 1 and a heating mechanism 30, wherein a stirring motor 15 is installed on the top of the synthesis reactor 1, the heating mechanism 30 comprises a heating jacket 12, the heating jacket 12 is fixedly installed on the outside of the synthesis reactor 1 and surrounds the synthesis reactor 1, a hot water inlet pipe 13 is fixedly installed on the heating jacket 12, a hot water outlet pipe 14 is also installed on the heating jacket 12, the insides of the hot water inlet pipe 13 and the hot water outlet pipe 14 are both connected with the inside of the heating jacket 12, an aluminum plate 31 is fixedly installed on the outer surface of the synthesis reactor 1, and the aluminum plate 31 is arranged at a position inside the heating jacket 12, and an air inlet hole 311 is opened at the upper end of the outer surface of the synthesis reactor 1.

[0029] In a preferred embodiment, a stirring shaft 16 is fixedly installed at the output end of the stirring motor 15, and a temperature transmitter 18 and a pressure gauge 19 are fixedly installed on the outer surface of the synthesis reactor 1. A feeding port 21 is also provided on the top of the synthesis reactor 1. To ensure that the device can be safely carried out during the reaction stage, a temperature transmitter 18 and a pressure gauge 19 are installed on the synthesis reactor 1. The temperature and air pressure inside the synthesis reactor 1 are detected by the temperature transmitter 18 and the pressure gauge 19 respectively to prevent accidents.

[0030] In a preferred embodiment, a feed pipeline 20 is installed outside the synthesis reactor 1, and a switch valve 22 is provided on the feed pipeline 20. The switch valve 22 is installed on the feed pipeline 20 to facilitate loading and stopping of loading, avoid excessive feeding, and exceed the original design ratio to ensure that the raw materials are added in proportion.

[0031] In a preferred embodiment, a centrifuge 2 is provided outside the synthesis reactor 1, a solvent pipeline 23 is installed on the centrifuge 2, and a feed pipe 24 is fixedly installed on the centrifuge 2, one end of the feed pipe 24 is installed on the transfer pump 3, and the other end of the feed pipe 24 is fixedly installed on the distillation reactor 4.

[0032] A primary condenser 5 and a secondary condenser 6 are installed outside the distillation kettle 4, and a solvent receiving tank 7, a product pre-distillation tank 8 and a product finished tank 9 are installed outside the secondary condenser 6. The secondary condenser 6 is connected to the solvent receiving tank 7, the product pre-distillation tank 8 and the product finished tank 9 respectively through another feeding pipe 24, and another switch valve 22 is installed on the feeding pipe 24. A vacuum buffer tank 10 is installed outside the solvent receiving tank 7, the product pre-distillation tank 8 and the product finished tank 9. A feeding pipe 25 is installed on the solvent receiving tank 7, the product pre-distillation tank 8 and the product finished tank 9, and is connected to the vacuum buffer tank 10 through the feeding pipe 25. A vacuum unit 11 is also installed outside the vacuum buffer tank 10, and the vacuum unit 11 is used to merge the organic phase.

[0033] In order to fully distill the raw materials, a stirring shaft 16 of the same specification as that of the synthesis reactor 1 is provided inside the distillation kettle 4, and a stirring blade 17 is installed at the end of the stirring shaft 16. The raw materials are constantly stirred inside the distillation kettle 4, so that the raw materials can be turned over, which is convenient for distillation of the raw materials.

[0034] Specifically, the working process or working principle of a synthesis and processing device for o-methylbenzoyl nitrile is as follows: during the preparation process of o-methylbenzoyl nitrile, it will undergo a mixed reaction, a centrifugal operation, and a merging of organic phases, and then desolventize and distill to obtain the product. In the preparation process for the mixed reaction, the raw materials are currently added to a reactor, and multiple raw materials react in the reactor to prepare a new product. During the reaction process, the reactor needs to be heated to meet the reaction conditions.

[0035] Currently, the most common heating method is electric heating plate heating. The electric heating plate is installed on the reactor to heat up the inside of the reactor through heat transfer. However, in actual use, it is found that the raw materials are constantly stirred in the reactor, and the stirring equipment is controlled by a motor. The operation of the motor will cause the whole to vibrate. Although the vibration amplitude is not large, long-term vibration will affect the electric heating plate, causing the internal structure of the electric heating plate to fall off, affecting its use. Therefore, this device is designed to solve this problem.

[0036] The device can be used to heat the synthesis reactor 1 conveniently, and effectively replace the heating method of the electric heating plate, and can continuously transfer heat into the interior of the synthesis reactor 1, which is helpful for the reaction of the raw materials. The specific operation is to connect the external power supply, add the raw materials of o-methylbenzoyl chloride, solvent and solid sodium cyanide into the interior of the synthesis reactor 1, and turn on the stirring motor 15, drive the stirring shaft 16 to rotate through the stirring motor 15, and drive the stirring blade 17 to continuously stir the interior of the synthesis reactor 1 to mix the raw materials, and at the same time, add the external hot water into the interior of the heating jacket 12 through the hot water inlet pipe 13, and heat the synthesis reactor 1 through the hot water. In order to improve the heating efficiency, the device is fixedly installed with an aluminum plate 31 on the outside of the synthesis reactor 1. Due to the high heat transfer performance of the aluminum plate 31, the aluminum plate 31 is heated by hot water, and the temperature of the aluminum plate 31 itself will increase, so that the hot air on the aluminum plate 31 enters the interior of the synthesis reactor 1 through the air inlet 311, thereby increasing the temperature inside the synthesis reactor 1, thereby achieving the reaction conditions and allowing the raw materials to react.

[0037] In order to operate the device in a safe condition, a temperature transmitter 18 and a pressure gauge 19 are installed on the outer surface of the synthesis reactor 1, through which the temperature and pressure inside the synthesis reactor 1 are detected to avoid danger.

[0038] After the reaction of the raw materials in the synthesis reactor 1 is completed, the raw materials are taken out and placed in the inside of the centrifuge 2, and the raw materials are screened by the centrifuge 2. During the screening process, the solvent is continuously introduced into the inside of the centrifuge 2 so that the filter cake is washed with the solvent. The by-product sodium chloride is filtered out by the centrifuge 2 so that the by-product can be thrown out, and then the remaining raw materials are transported to the inside of the distillation kettle 4 through the material transfer pump 3. The device is equipped with the same structure as that on the synthesis reactor 1 on the distillation kettle 4, such as the stirring motor 15, the temperature transmitter 18 and the pressure gauge 19.

[0039] The raw materials are distilled in a distillation kettle 4 to generate gas, which enters into the first-stage condenser 5 and the second-stage condenser 6 in sequence. The gas can be liquefied through the two condensers, and the liquefied liquids are transported to the solvent receiving tank 7, the product pre-distillation tank 8 and the product finished product tank 9 respectively. After processing in each tank, all the raw materials in the three tanks are transported to a vacuum buffer tank 10. After passing through the vacuum buffer tank 10, the raw materials are transported to the inside of a vacuum unit 11 to merge with the organic phase, and finally o-methylbenzoyl nitrile is prepared.

[0040] The reaction principle of this device for preparing o-methylbenzoyl nitrile is:

[0041] .

Claims

1. A synthesis and processing device for o-methylbenzoyl nitrile, characterized in that, It comprises a synthesis reactor (1), and a stirring motor (15) is installed on the top of the synthesis reactor (1); A heating mechanism (30), wherein the heating mechanism (30) comprises: A heating jacket (12), wherein the heating jacket (12) is fixedly mounted on the outside of the synthesis reactor (1) and surrounds the synthesis reactor (1); a hot water inlet pipe (13), the hot water inlet pipe (13) being fixedly mounted on the heating jacket (12); a hot water outlet pipe (14) being also mounted on the heating jacket (12); the interiors of the hot water inlet pipe (13) and the hot water outlet pipe (14) being both in communication with the interior of the heating jacket (12); An aluminum plate (31) is fixedly mounted on the outer surface of the synthesis reactor (1), and the aluminum plate (31) is arranged at a position inside the heating jacket (12), and an air inlet hole (311) is opened at the upper end of the outer surface of the synthesis reactor (1).

2. The synthesis processing device of o-methylbenzoyl nitrile according to claim 1, characterized in that: A stirring shaft (16) is fixedly mounted on the output end of the stirring motor (15), and a temperature transmitter (18) and a pressure gauge (19) are fixedly mounted on the outer surface of the synthesis reactor (1). A feeding port (21) is also provided on the top of the synthesis reactor (1).

3. The synthesis processing device of o-methylbenzoyl nitrile according to claim 2, characterized in that, A feed pipeline (20) is installed outside the synthesis reactor (1), and a switch valve (22) is arranged on the feed pipeline (20).

4. The synthesis processing device of o-methylbenzoyl nitrile according to claim 3, characterized in that: A centrifuge (2) is arranged outside the synthesis reactor (1), a solvent pipeline (23) is installed on the centrifuge (2), and a feed pipe (24) is also fixedly installed on the centrifuge (2), one end of the feed pipe (24) is installed on the material transfer pump (3), and the other end of the feed pipe (24) is fixedly installed on the distillation reactor (4).

5. The synthesis processing device of o-methylbenzoyl nitrile according to claim 4, characterized in that: A primary condenser (5) and a secondary condenser (6) are installed outside the distillation kettle (4), and a solvent receiving tank (7), a product pre-distillation tank (8) and a product finished product tank (9) are installed outside the secondary condenser (6). The secondary condenser (6) is connected to the solvent receiving tank (7), the product pre-distillation tank (8) and the product finished product tank (9) respectively through another feed pipe (24), and another switch valve (22) is installed on the feed pipe (24).

6. The synthesis processing device of o-methylbenzoyl nitrile according to claim 5, characterized in that: A vacuum buffer tank (10) is installed outside the solvent receiving tank (7), the product pre-distillation tank (8) and the product finished tank (9); a feeding pipe (25) is installed on the solvent receiving tank (7), the product pre-distillation tank (8) and the product finished tank (9), and is connected to the vacuum buffer tank (10) via the feeding pipe (25).

7. The synthesis processing device of o-methylbenzoyl nitrile according to claim 6, characterized in that: A vacuum unit (11) is also installed outside the vacuum buffer tank (10), and the vacuum unit (11) is used to combine the organic phase.

8. The synthesis processing device of o-methylbenzoyl nitrile according to claim 7, characterized in that: The interior of the distillation kettle (4) is provided with a stirring shaft (16) of the same specifications as those of the interior of the synthesis reaction kettle (1), and a stirring blade (17) is installed at the end of the stirring shaft (16).

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