CN218689523U

CN218689523U - Device for continuously producing carbendazim

Info

Publication number: CN218689523U
Application number: CN202223032818.0U
Authority: CN
Inventors: 袁晓林; 吴双齐; 刘建清; 盛洁; 吴义宏; 陈磊; 陈永佩; 金星元; 查日飞; 杨银财; 齐永发; 王小双
Original assignee: Anhui Dongzhi Guangxin Agrochemical Co Ltd
Current assignee: Anhui Dongzhi Guangxin Agrochemical Co Ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-03-24
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to a device for continuously producing carbendazim, which belongs to the technical field of carbendazim production and comprises a batching mechanism, a climbing film evaporation reactor, an auxiliary mechanism and a separating mechanism; the batching mechanism comprises a kettle body, a discharge port is arranged at the bottom of the kettle body, and the discharge port is communicated with the film-rising evaporation reactor through a feed pipe; a plurality of hard glass tubes are arranged in the climbing film evaporation reactor and are heated by steam; a liquid phase outlet is arranged on the climbing film evaporation reactor; a liquid phase outlet is used as a boundary; the batching mechanism and the auxiliary mechanism are positioned above the liquid phase outlet; the separation mechanism is positioned on one side of the liquid phase outlet; the top of the climbing film evaporation reactor is provided with an auxiliary mechanism, and the climbing film evaporation reactor is communicated with the auxiliary mechanism; the continuous condensation reaction in the synthesis process of the ganoderma lucidum is realized by the matching of the material preparation mechanism, the climbing film evaporation reactor, the auxiliary mechanism and the separation mechanism; the raw materials are premixed and heated and then enter the climbing film evaporation reactor, so that the reaction efficiency is improved.

Description

Device for continuously producing carbendazim

Technical Field

The utility model belongs to the technical field of carbendazim production, specifically, relate to a device of serialization production carbendazim.

Background

Carbendazim is a benzimidazole, is a systemic fungicide with the chemical name of 2-benzimidazolyl methyl carbamate, has a melting point of 330-335 ℃, is slightly dissolved in water and an organic solvent, can be dissolved in acid to form salt, has stable properties, and is easily decomposed when being subjected to alkali.

The condensation reaction is the last step of the synthesis process of the carbendazim, and the o-phenylenediamine is condensed with methyl cyanocarbamate in an acid environment to remove 1 molecule of ammonia, and the carbendazim is formed by cyclization. The general gap method operation is that firstly the water solution of methyl cyanocarbamate is pumped into a reaction pot, then o-phenylenediamine is added, concentrated hydrochloric acid is added to make the pH value of the reaction solution reach 3-4, the temperature is slowly raised to about 70 ℃, then concentrated hydrochloric acid is continuously added until the calculated amount of acid is added, the temperature is raised to 103 ℃, the temperature is kept and the reflux is carried out for 1-2 hours, the cooling and the filtration are carried out, the filter cake is washed by water, then the suction drying is carried out, and the industrial carbendazim is obtained after the drying. Compared with continuous production, the batch method is more mature in operation but is not beneficial to improving the productivity.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that exists among the prior art, the utility model provides a device of serialization production carbendazim.

The purpose of the utility model can be realized by the following technical scheme:

a device for continuously producing carbendazim comprises a batching mechanism, a climbing film evaporation reactor, an auxiliary mechanism and a separation mechanism;

the batching mechanism comprises a kettle body, a discharge port is arranged at the bottom of the kettle body, and the discharge port is communicated with the film-rising evaporation reactor through a feed pipe; a plurality of hard glass tubes are arranged in the climbing film evaporation reactor and are heated by steam; a liquid phase outlet is arranged on the climbing film evaporation reactor; the liquid phase outlet is used as a boundary; the batching mechanism and the auxiliary mechanism are positioned above the liquid phase outlet; the separation mechanism is positioned on one side of the liquid phase outlet; the top of the climbing film evaporation reactor is provided with an auxiliary mechanism, and the climbing film evaporation reactor is communicated with the auxiliary mechanism;

the auxiliary mechanism comprises a cylinder, a second motor is arranged at the top of the cylinder, the output end of the second motor is fixedly connected with the top end of the connecting rod, and the bottom end of the connecting rod is fixedly connected with a rotational flow plate; the rotational flow plate is of an umbrella-shaped structure;

the separating mechanism comprises a shell, a discharge pipe is fixedly mounted on the shell, one end of the discharge pipe penetrates through the shell, and the other end of the discharge pipe is fixedly connected with the liquid phase outlet.

Further, the top of the kettle body is provided with a first motor, the output end of the first motor is fixedly connected with one end of a rotating shaft, and a stirring shaft is arranged on the rotating shaft.

Furthermore, one end of the rotational flow plate, which is far away from the connecting rod, is not contacted with the inner wall of the cylinder body; the inner wall of the cylinder body is fixedly provided with a V-shaped bulge.

Further, the bottom end of the V-shaped bulge is fixedly connected with a drainage tube; one end of the drainage tube, which is far away from the V-shaped bulge, can guide liquid to flow into the evaporation section, namely the drainage tube can guide reaction liquid into the climbing film evaporation reactor for continuous reaction.

Furthermore, a steam output pipe is fixedly arranged on one side of the shell opposite to the discharge pipe.

Furthermore, an electric heating wire is wound on the part, positioned between the shell and the liquid phase outlet, of the discharge pipe; the discharge pipe is obliquely arranged, so that concentrated solution can be discharged conveniently; the electric heating wire wound on the discharge pipe can prevent concentrated reaction liquid from crystallizing in the interior, blocking a channel and influencing collection.

Further, a feeding adjusting valve is arranged on the feeding pipe.

The utility model has the advantages that:

the utility model relates to a device for continuously producing carbendazim, which realizes the continuous condensation reaction in the synthesis process of the carbendazim by arranging a batching mechanism, a climbing film evaporation reactor, an auxiliary mechanism and a separation mechanism; the raw materials are premixed and heated and then enter the climbing film evaporation reactor through the feeding pipe, so that the reaction efficiency is improved.

In the reaction process, the film-rising evaporation reactor is communicated with the auxiliary mechanism, the second motor drives the connecting rod to drive the rotational flow plate to rotate, steam generated by reaction flows downwards along the inner wall of the cylinder under the rotating action of the rotational flow plate and is gathered under the action of the V-shaped protrusion, one end of the drainage tube, far away from the V-shaped protrusion, can guide liquid to flow into the evaporation section, namely the drainage tube can guide reaction liquid to flow into the film-rising evaporation reactor for continuous reaction, the gathering and crystallization of solution in the device are reduced, and the using effect of the device is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a device for continuously producing carbendazim according to the present invention;

FIG. 2 is a schematic view of the internal structure of the auxiliary mechanism of the present invention;

fig. 3 is a schematic diagram of the internal structure of the middle separating mechanism of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a batching mechanism; 11. a kettle body; 12. a feeding port; 13. a first motor; 14. a rotating shaft; 15. a stirring shaft; 16. a discharge port; 2. a climbing film evaporation reactor; 21. a liquid phase outlet; 3. an auxiliary mechanism; 31. a barrel; 32. a second motor; 33. a connecting rod; 34. a swirl plate; 35. a V-shaped bulge; 36. a drainage tube; 4. a separating mechanism; 41. a housing; 42. a steam output pipe; 43. a discharge pipe; 44. an electric heating wire; 5. and (4) feeding a pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, an apparatus for continuously producing carbendazim includes a material distribution mechanism 1, a climbing film evaporation reactor 2, an auxiliary mechanism 3, and a separation mechanism 4;

the batching mechanism 1 comprises a kettle body 11, a first motor 13 is arranged at the top of the kettle body 11, the output end of the first motor 13 is fixedly connected with one end of a rotating shaft 14, and a stirring shaft 15 is arranged on the rotating shaft 14; a discharge port 16 is arranged at the bottom of the kettle body 11, the discharge port 16 is communicated with the film-rising evaporation reactor 2 through a feeding pipe 5, and the feeding pipe 5 is fixedly connected with the bottom of the film-rising evaporation reactor 2; a plurality of hard glass tubes are arranged in the climbing film evaporation reactor 2 and are heated by steam; the feeding pipe 5 is provided with a feeding regulating valve; the climbing film evaporation reactor 2 is provided with a liquid phase outlet 21; bounded by liquid phase outlet 21; the batching mechanism 1 and the auxiliary mechanism 3 are positioned above the liquid phase outlet 21; the separation mechanism 4 is positioned at one side of the liquid phase outlet 21; the top of the climbing film evaporation reactor 2 is provided with an auxiliary mechanism 3, and the climbing film evaporation reactor 2 is communicated with the auxiliary mechanism 3;

the auxiliary mechanism 3 comprises a cylinder 31, a second motor 32 is arranged at the top of the cylinder 31, the output end of the second motor 32 is fixedly connected with the top end of a connecting rod 33, and a rotational flow plate 34 is fixedly connected with the bottom end of the connecting rod 33; the rotational flow plate 34 is of an umbrella-shaped structure, and one end of the rotational flow plate 34, which is far away from the connecting rod 33, is not contacted with the inner wall of the barrel 31; a V-shaped bulge 35 is fixedly arranged on the inner wall of the barrel body 31, and the bottom end of the V-shaped bulge 35 is fixedly connected with a drainage tube 36; the end of the drainage tube 36 far away from the V-shaped bulge 35 can guide the liquid to flow into the evaporation section, i.e. the drainage tube 36 can guide the reaction liquid into the climbing film evaporation reactor 2 for continuous reaction.

The separation mechanism 4 comprises a shell 41, a discharge pipe 43 is fixedly mounted on the shell 41, one end of the discharge pipe 43 penetrates through the shell 41, the other end of the discharge pipe 43 is fixedly connected with the liquid phase outlet 21, and an electric heating wire 44 is wound on the part, positioned on the shell 41 and the liquid phase outlet 21, of the discharge pipe 43; the discharge pipe 43 is obliquely arranged, so that concentrated liquid can be discharged conveniently; the electric heating wire 44 wound on the discharging pipe 43 can prevent the concentrated reaction liquid from crystallizing in the inner part, blocking the channel and influencing the collection. A steam output pipe 42 is fixedly arranged on one side of the shell 41 opposite to the discharge pipe 43;

the working principle is as follows:

according to the raw material ratio, adding aqueous solution of methyl cyanocarbamate, o-phenylenediamine and hydrochloric acid into the kettle body 11 through a feeding port 12, and driving a rotating shaft 14 by a first motor 13 to drive a stirring shaft 15 to stir the raw materials and preheat the raw materials to 50-60 ℃; the prepared raw materials enter a feeding pipe 5 through a discharging hole 16, the feeding speed of the raw materials entering a film rising evaporation reactor 2 is adjusted through a feeding adjusting valve arranged on the feeding pipe 5, and the raw materials react in a hard glass tube in the film rising evaporation reactor 2; the reaction temperature in the climbing film evaporation reactor 2 is maintained to be higher than 110 ℃, the reaction is carried out for 50-60min, the reaction liquid overflows from the liquid phase outlet 21 under the action of pressure and the pulling force of film forming evaporation, enters the shell 41 through the discharge pipe 43 and is finally collected.

In the reaction process, it communicates with complementary unit 3 to rise membrane evaporation reactor 2, second motor 32 drive connecting rod 33 drives whirl board 34 and rotates, the steam that the reaction produced flows down along the inner wall of barrel 31 under the effect is done in the rotation of whirl board 34, and gather under the protruding 35 effect of V type, keep away from the protruding 35 one end of V type on drainage tube 36, can guide liquid inflow evaporation zone, drainage tube 36 can be with the reaction liquid drainage continue the reaction in rising membrane evaporation reactor 2 promptly, reduce the inside solution gathering crystallization of device.

In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely exemplary and illustrative of the structure of the invention and various modifications, additions or substitutions as are known to those skilled in the art may be made to the described embodiments without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A device for continuously producing carbendazim is characterized by comprising a batching mechanism (1), a climbing film evaporation reactor (2), an auxiliary mechanism (3) and a separating mechanism (4);

the batching mechanism (1) comprises a kettle body (11), a discharge hole (16) is formed in the bottom of the kettle body (11), and the discharge hole (16) is communicated with the film-rising evaporation reactor (2) through a feeding pipe (5); a liquid phase outlet (21) is arranged on the climbing film evaporation reactor (2); a liquid phase outlet (21) is used as a boundary; the batching mechanism (1) and the auxiliary mechanism (3) are positioned above the liquid phase outlet (21); the separation mechanism (4) is positioned at one side of the liquid phase outlet (21); the climbing film evaporation reactor (2) is communicated with the auxiliary mechanism (3);

the auxiliary mechanism (3) comprises a cylinder body (31), a second motor (32) is arranged at the top of the cylinder body (31), the output end of the second motor (32) is fixedly connected with the top end of a connecting rod (33), and the bottom end of the connecting rod (33) is fixedly connected with a cyclone plate (34); the rotational flow plate (34) is of an umbrella-shaped structure;

the separation mechanism (4) comprises a shell (41), a discharge pipe (43) is fixedly mounted on the shell (41), one end of the discharge pipe (43) penetrates through the shell (41), and the other end of the discharge pipe (43) is fixedly connected with the liquid phase outlet (21).

2. The device for continuously producing carbendazim according to claim 1, wherein a first motor (13) is arranged at the top of the kettle body (11), the output end of the first motor (13) is fixedly connected with one end of a rotating shaft (14), and a stirring shaft (15) is arranged on the rotating shaft (14).

3. The apparatus for continuously producing carbendazim according to claim 1, wherein one end of the swirling plate (34) away from the connecting rod (33) is not in contact with the inner wall of the cylinder (31); the inner wall of the cylinder body (31) is fixedly provided with a V-shaped bulge (35).

4. The apparatus for continuously producing carbendazim according to claim 3, wherein a drainage tube (36) is fixedly connected to the bottom end of the V-shaped protrusion (35).

5. The apparatus for continuously producing carbendazim according to claim 1, wherein the steam output pipe (42) is fixedly installed on the side of the housing (41) opposite to the discharging pipe (43).

6. The apparatus for continuously producing carbendazim according to claim 1, wherein the portion of the discharging pipe (43) located at the housing (41) and the liquid phase outlet (21) is wound with an electric heating wire (44).

7. The apparatus for continuously producing carbendazim according to claim 1, wherein the feed pipe (5) is provided with a feed regulating valve.