CN212237278U

CN212237278U - Continuous nitration reaction device

Info

Publication number: CN212237278U
Application number: CN202020603276.XU
Authority: CN
Inventors: 韩庆荣; 许青梅; 耿来红; 赵永生; 马凯; 李卫平
Original assignee: Gansu Chemical Industry Research Institute Co ltd
Current assignee: Gansu Chemical Industry Research Institute Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-12-29
Anticipated expiration: 2030-04-21

Abstract

The utility model belongs to the technical field of chemical industry equipment, especially, be a continuous nitration device, the device comprises a device shell, the inside backup pad that is provided with high difference of device shell, install material jar and first cooling bath in the high backup pad, first cooling bath internally mounted has first reation kettle, the material tank top is connected and is installed the conveying pump, the material jar is connected with first reation kettle through the conveying pipeline through the conveying pump, install solid acid jar and second cooling bath in the low backup pad, second cooling bath internally mounted has second reation kettle, solid acid tank top is connected and is installed the solid acid delivery pump, the solid acid jar is used for the second reation kettle to be connected through the solid acid delivery pump through the solid acid conveyer pipe. The first reaction kettle and the second reaction kettle realize continuous reaction, reactants after reaction are discharged into the delayer from the discharge pipe, and enter the product collecting tank and the solid acid collecting tank respectively through pipelines for storage after delamination; thereby greatly improving the quality of the product; thereby reducing the production cost.

Description

Continuous nitration reaction device

Technical Field

The utility model belongs to the technical field of chemical industry equipment, concretely relates to continuous nitration device.

Background

Nitration is a common chemical unit operation and is widely applied to pesticides, medicines and dyes. For the single-kettle type nitration reaction used in the past, the reaction efficiency is low, and the product yield is low. The nitration reaction can generate a large amount of heat, if the control is not good and the explosion danger is easy to occur, the existing single-kettle nitration reaction device generally adopts a mode of adding a coil pipe in a kettle or externally arranging a circulating condenser, so that the heat can be reduced, but the nitration reaction can not be continuously carried out, the production capacity and the reaction efficiency of the nitration reaction device can be influenced, and the energy consumption is higher.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a continuous nitration reaction device, wherein a first reaction kettle and a second reaction kettle realize continuous reaction, reactants after reaction are discharged into a delayer from a discharge pipe for layering, and then enter a product collecting tank and a solid acid collecting tank respectively through pipelines for storage after layering; impurities entering the product storage tank cannot be doped with acid liquor, so that the quality of the product is greatly improved; and the layered solid acid can be recycled, so that the production cost is reduced.

In order to achieve the above object, the utility model provides a following technical scheme: a continuous nitration reaction device comprises a device shell, wherein supporting plates with different heights are arranged in the device shell, a material tank and a first cooling tank are arranged on the high supporting plates, a first reaction kettle is arranged in the first cooling tank, a material conveying pump is connected and arranged at the top of the material tank, the material tank is connected with the first reaction kettle through a material conveying pipe by the material conveying pump, a solid acid tank and a second cooling tank are arranged on the lower supporting plates, a second reaction kettle is arranged in the second cooling tank, a solid acid conveying pump is connected and arranged at the top of the solid acid tank, and the solid acid tank is connected with the second reaction kettle through the solid acid conveying pipe by the solid acid conveying pump; the bottom of the first reaction kettle is connected with a U-shaped bent pipe through a three-way pipe; the bottom of the first reaction kettle is connected with the top of the second reaction kettle through a U-shaped bent pipe, and the bottoms of the first reaction kettle and the second reaction kettle are connected with a delayer through a discharge pipe; the pipeline at the bottom of the layering device is respectively connected with a product collecting tank and a solid acid collecting tank.

Preferably, motors are installed at the tops of the first reaction kettle and the second reaction kettle, and stirring rods which are connected with the motors in a driving mode are installed inside the first reaction kettle and the second reaction kettle.

Preferably, the material conveying pipe and the solid acid conveying pipe are provided with one-way material conveying valves.

Preferably, the first cooling tank and the second cooling tank are both provided with a cooling water inlet and a cooling water outlet in a connected manner.

Preferably, the bottom of the device shell is connected with a movable wheel through a supporting foot.

Preferably, a discharge valve is mounted on the discharge pipe.

Preferably, a power box is installed at the bottom in the device shell; the material conveying pump, the solid acid conveying pump and the motor are respectively and electrically connected with a power supply box, and a power switch is arranged on the power supply box.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses the conveying pump inputs the material in the material jar to the inside of first reation kettle through the conveying pipeline, then starts the solid acid conveying pump and inputs the solid acid in the solid acid jar to the inside of second reation kettle through the solid acid conveyer pipe, starts the motor drive puddler, carries out the reaction stirring operation to the inside of first reation kettle; after the reaction and the stirring, when the nitrifying liquid in the first reaction kettle reaches the top height of the U-shaped bent pipe, the redundant nitrifying liquid flows out to the inside of the second reaction kettle to carry out the second reaction operation; after the first reaction kettle and the second reaction kettle react, opening a discharge valve to discharge reactants after reaction into a delayer from a discharge pipe for layering, and respectively entering a product collecting tank and a solid acid collecting tank for storage through pipelines after layering; impurities entering the product storage tank cannot be doped with acid liquor, so that the quality of the product is greatly improved; and the layered solid acid can be recycled, so that the production cost is reduced.

Drawings

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

FIG. 1 is a schematic structural diagram of a continuous nitrification reactor of the present invention.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides the following technical solutions: a continuous nitration reaction device comprises a device shell 1, wherein supporting plates 11 with different heights are arranged in the device shell 1, a material tank 2 and a first cooling tank 5 are arranged on the high supporting plate 11, a first reaction kettle 4 is arranged in the first cooling tank 5, a material conveying pump 3 is connected and arranged at the top of the material tank 2, the material tank 2 is connected with the first reaction kettle 4 through the material conveying pump 3 through a material conveying pipe 22, a solid acid tank 8 and a second cooling tank 7 are arranged on the low supporting plate 11, a second reaction kettle 6 is arranged in the second cooling tank 7, a solid acid conveying pump 9 is connected and arranged at the top of the solid acid tank 8, and the solid acid tank 8 is connected with the second reaction kettle 6 through the solid acid conveying pump 9 and a solid acid conveying pipe 82; the bottom of the first reaction kettle 4 is connected with a U-shaped bent pipe 10 through a three-way pipe; the bottom of the first reaction kettle 4 is connected with the top of the second reaction kettle 6 through a U-shaped bent pipe 10, and the bottoms of the first reaction kettle 4 and the second reaction kettle 6 are connected with a delayer 16 through a discharge pipe 15; the bottom pipeline of the delaminator 16 is respectively connected with a product collecting tank 17 and a solid acid collecting tank 18.

Specifically, motors 41 are installed at the tops of the first reaction kettle 4 and the second reaction kettle 6, and stirring rods 42 in driving connection with the motors 41 are installed inside the first reaction kettle 4 and the second reaction kettle 6.

Specifically, the feed delivery pipe 22 and the solid acid delivery pipe 82 are provided with one-way feed delivery valves.

Specifically, the first cooling tank 5 and the second cooling tank 7 are both connected and provided with a cooling water inlet and a cooling water outlet.

Specifically, the bottom of the device shell 1 is connected with a moving wheel 14 through a supporting foot 13.

Specifically, a discharge valve is installed on the discharge pipe 15.

Specifically, a power box 12 is installed at the bottom in the device shell 1; the material conveying pump 3, the solid acid conveying pump 9 and the motor 41 are respectively electrically connected with the power box 12, and a power switch is arranged on the power box 12.

In addition, the height between the solid acid inlet of the first reaction vessel 4 and the solid acid inlet of the second reaction vessel 6 is 500 to 1000 mm.

The utility model discloses a theory of operation and use flow: when the utility model is used, a worker starts the material conveying pump 3 to input the material in the material tank 2 into the first reaction kettle 4 through the material conveying pipe 22, then starts the solid acid conveying pump 9 to input the solid acid in the solid acid tank 8 into the second reaction kettle 6 through the solid acid conveying pipe 82, and the starting motor 41 drives the stirring rod 42 to perform reaction stirring operation inside the first reaction kettle 4; after the reaction and the stirring, when the acid liquid in the first reaction kettle 4 reaches the top height of the U-shaped bent pipe 10, the redundant nitrifying liquid flows out to the interior of the second reaction kettle 6 to carry out a second reaction operation; after the first reaction kettle 4 and the second reaction kettle 6 react, the reactant after the reaction is opened the discharge valve is discharged into the delayer 16 from the discharge pipe 15 for layering, and the reactant after layering respectively enters the product collecting tank 17 and the solid acid collecting tank 18 through pipelines for storage.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous nitration reaction device is characterized in that: the device comprises a device shell (1), supporting plates (11) with different heights are arranged in the device shell (1), a material tank (2) and a first cooling tank (5) are installed on the high supporting plate (11), a first reaction kettle (4) is installed in the first cooling tank (5), a material conveying pump (3) is installed at the top of the material tank (2) in a connected mode, the material tank (2) is connected with the first reaction kettle (4) through the material conveying pump (3) through a material conveying pipe (22), a solid acid tank (8) and a second cooling tank (7) are installed on the low supporting plate (11), a second reaction kettle (6) is installed in the second cooling tank (7), a solid acid conveying pump (9) is installed at the top of the solid acid tank (8) in a connected mode, and the solid acid tank (8) is connected with the second reaction kettle (6) through a solid acid conveying pipe (82) through the solid acid conveying pump (9); the bottom of the first reaction kettle (4) is connected with a U-shaped bent pipe (10) through a three-way pipe; the bottom of the first reaction kettle (4) is connected with the top of the second reaction kettle (6) through a U-shaped bent pipe (10), and the bottoms of the first reaction kettle (4) and the second reaction kettle (6) are connected with a delayer (16) through a discharge pipe (15); the bottom pipeline of the delayer (16) is respectively connected with a product collecting tank (17) and a solid acid collecting tank (18).

2. The continuous nitrification reaction apparatus according to claim 1, wherein: motor (41) are installed at first reation kettle (4) and second reation kettle (6) top, and first reation kettle (4) and second reation kettle (6) internally mounted have puddler (42) of being connected with motor (41) drive.

3. The continuous nitrification reaction apparatus according to claim 1, wherein: and one-way material conveying valves are arranged on the material conveying pipe (22) and the solid acid conveying pipe (82).

4. The continuous nitrification reaction apparatus according to claim 1, wherein: and the first cooling tank (5) and the second cooling tank (7) are both connected and provided with a cooling water inlet and a cooling water outlet.

5. The continuous nitrification reaction apparatus according to claim 1, wherein: the bottom of the device shell (1) is connected with a movable wheel (14) through a supporting leg (13).

6. The continuous nitrification reaction apparatus according to claim 1, wherein: and a discharge valve is arranged on the discharge pipe (15).

7. The continuous nitrification reaction apparatus according to claim 1, wherein: a power box (12) is arranged at the bottom in the device shell (1); the material conveying pump (3), the solid acid conveying pump (9) and the motor (41) are respectively electrically connected with the power box (12), and a power switch is arranged on the power box (12).