CN216725821U

CN216725821U - Distillation plant is used in bromoacetonitrile preparation convenient to maintain

Info

Publication number: CN216725821U
Application number: CN202220209479.XU
Authority: CN
Inventors: 蒋艳玲; 师果果; 李锡才
Original assignee: Chenghong Pharmaceutical Weihai Co ltd
Current assignee: Chenghong Pharmaceutical Weihai Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-14
Anticipated expiration: 2032-01-25

Abstract

The utility model relates to the technical field of production equipment, and discloses a distillation device for preparing bromoacetonitrile, which is convenient to maintain and comprises a pressure control box, wherein a heating box is arranged in the pressure control box; through having designed in sending solution to pneumatic control box's heating cabinet from the feed liquor pipe, open the heating seat and distill the solution in the heating cabinet, control the temperature through the control panel, open during the distillation at the uniform velocity motor and drive the puddler and carry out the thermally equivalent with solution, thereby improve the distillation effect, be convenient for stir solution, the distillation efficiency has been improved, production cost is reduced, distill solution through having designed the heating cabinet, solution sends to the valve flowing back intraductally through the current collection fill, carry out the condensation through the coolant liquid in the cooling cylinder and collect, can also change the coolant liquid in the cooling cylinder through liquid changing mechanism, the condensation effect has been improved, be convenient for liquefy distilled gas, avoid influencing the staff and operate, the use burden has been lightened, and the device is worth popularizing.

Description

Distillation plant is used in bromoacetonitrile preparation convenient to maintain

Technical Field

The utility model relates to the technical field of production equipment, in particular to a distillation device for preparing bromoacetonitrile, which is convenient to maintain.

Background

Bromoacetonitrile is a colorless to pale yellow liquid, is easy to absorb moisture, is possibly harmful to the environment, is specially paid attention to water bodies, is generally used for general tests and organic synthesis tests, and is a thermodynamic separation process which utilizes the difference of the boiling points of components in a mixed liquid or liquid-solid system to evaporate low-boiling components and condense to separate the whole components, and is a combination of two unit operations of evaporation and condensation.

The utility model discloses a 'distillation plant for preparing white spirit' as disclosed in the utility model 201621400176.7, the utility model provides a distillation plant for preparing white spirit, utilizes the setting of pressure relief device, can ensure to keep in the distillation cylinder under a stable pressure all the time, unnecessary steam is automatic to be discharged, ensures that steam can fully contact with the thing of making, compares prior art, can realize distilling evenly, improves the wine yield; and because the distillation layer that is provided with more than 2 layers, every layer of distillation layer all is connected with air inlet branch pipe, is provided with adjustable temperature switch on the air inlet branch pipe, can utilize adjustable temperature switch to adjust the temperature of every layer of distillation layer, can make the temperature of upper distillation layer be higher than the temperature of lower floor's distillation layer, can make white spirit steam further reduce its inside moisture content at upper distillation layer like this to improve the concentration of alcohol in the white spirit, compare prior art, can improve alcohol concentration 2 times at least.

To sum up, the distillation plant is used in preparation of most bromoacetonitrile on the existing market uses comparatively inconveniently, and not only the distillation effect is poor, can't stir solution during the distillation, has reduced distillation efficiency, has increased manufacturing cost, and the cooling effect is relatively poor, can't effectively liquefy the gas of distillation, influences the staff and operates, has increased the use burden, for this reason we have proposed a distillation plant for preparation of bromoacetonitrile convenient to maintain to solve the problem of above-mentioned existence.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a distillation device for bromoacetonitrile preparation, which is convenient to maintain and aims to solve the problems that most of distillation devices for bromoacetonitrile preparation in the market are inconvenient to use, the distillation effect is poor, the solution cannot be stirred during distillation, the distillation efficiency is reduced, the production cost is increased, the cooling effect is poor, the distilled gas cannot be effectively liquefied, the operation of workers is influenced, and the use burden is increased.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a distillation plant is used in bromoacetonitrile preparation convenient to maintain, includes the atmospheric control case, the inside of atmospheric control case is provided with the heating cabinet, it is connected with the puddler to rotate between the inner wall of heating cabinet, one side bolt joint of atmospheric control case has the uniform velocity motor, and the one end bolt joint of the output of uniform velocity motor and puddler, the bottom of atmospheric control incasement wall is provided with the heating seat, and the top of heating seat is corresponding with the bottom of heating cabinet, the top bolt joint of atmospheric control case has the cooler bin, the inside of cooler bin is provided with the valve fluid-discharge tube, the outside of valve fluid-discharge tube is provided with the cooling cylinder, and the one end of valve fluid-discharge tube is corresponding with the inside of atmospheric control case, the inside of cooler bin is provided with trades liquid mechanism.

Preferably, the liquid changing mechanism comprises a liquid changing box, the bottom of the liquid changing box and the inner part of the cooling box are communicated with a circulating pump, and the circulating pump is communicated with one side of the cooling cylinder.

Preferably, one side of the air pressure control box is communicated with a liquid inlet pipe, and one end of the liquid inlet pipe corresponds to the inside of the heating box.

Preferably, a flow collecting hopper is bolted to the top between the inner walls of the air pressure control box, and the top of the flow collecting hopper is communicated with one end of a valve drain pipe.

Preferably, a discharge pipe is communicated with one side of the air pressure control box and a position corresponding to the heating box, and a valve is arranged on the front face of the discharge pipe.

Preferably, four corners of the bottom of the air pressure control box are bolted with stabilizing seats, and the stabilizing seats correspond to the bottom of the air pressure control box.

Preferably, the cooling box is embedded with a radiator mesh in the front, and the radiator mesh corresponds to one side of the circulating pump.

Preferably, the front surface of the heating seat is provided with a control screen, and the control screen corresponds to the inside of the heating seat.

Compared with the prior art, the utility model provides the distillation device for preparing bromoacetonitrile, which is convenient to maintain, and has the following beneficial effects:

the solution is conveyed into the heating box of the air pressure control box from the liquid inlet pipe, the heating seat is opened to distill the solution in the heating box, the temperature is controlled through the control screen, and the constant-speed motor is started to drive the stirring rod to uniformly heat the solution during distillation, so that the distillation effect is improved, the solution is conveniently stirred, the distillation efficiency is improved, and the production cost is reduced;

through having designed the heating cabinet and distilling solution, solution is sent to the valve flowing back intraductally through the collecting funnel, carries out the condensation through the coolant liquid in the cooling cylinder and collects, can also change the coolant liquid in the cooling cylinder through liquid changing mechanism, has improved the condensation effect, is convenient for liquefy the gas of distilling, avoids influencing the staff and operates, has alleviateed the use burden, is worth using widely.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic cross-sectional elevation view of the structure of the present invention;

FIG. 3 is a schematic front view of the structure of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2 according to the present invention.

In the figure: 1. a pneumatic control box; 2. a heating box; 3. a stirring rod; 4. a constant speed motor; 5. a heating base; 6. a cooling tank; 7. a valve drain pipe; 8. a cooling cylinder; 9. a liquid changing mechanism; 10. a liquid changing box; 11. a circulation pump; 12. a liquid inlet pipe; 13. a flow collecting hopper; 14. a discharge pipe; 15. a valve; 16. a stabilizing base; 17. a heat-dissipating web; 18. and (6) a control screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

As shown in fig. 1 to 4, the present invention provides a technical solution: a distillation device for preparing bromoacetonitrile convenient for maintenance comprises a pressure control box 1, a heating box 2 is arranged inside the pressure control box 1, a stirring rod 3 is rotatably connected between the inner walls of the heating box 2, a constant speed motor 4 is bolted on one side of the pressure control box 1, the output end of the uniform speed motor 4 is bolted with one end of the stirring rod 3, the bottom of the inner wall of the air pressure control box 1 is provided with a heating seat 5, the top of the heating seat 5 corresponds to the bottom of the heating box 2, by designing the heating box 2 for delivering the solution from the liquid inlet pipe 12 to the air pressure control box 1, opening the heating seat 5 to distill the solution in the heating box 2, the temperature is controlled by a control screen 18, the uniform speed motor 4 is started to drive the stirring rod 3 to uniformly heat the solution during distillation, thereby improving the distillation effect, being convenient for stir the solution, improving the distillation efficiency and reducing the production cost.

Referring to fig. 1, 2 and 3, in order to stably support the device, stabilizing seats 16 are bolted to four corners of the bottom of the air pressure control box 1, and the stabilizing seats 16 correspond to the bottom of the air pressure control box 1.

Referring to fig. 1 and 3, in order to facilitate heat dissipation of the circulation pump 11, a heat dissipation mesh 17 is embedded in the front surface of the cooling box 6, and the heat dissipation mesh 17 corresponds to one side of the circulation pump 11.

Referring to fig. 1 and 3, in order to control the temperature of the heating base 5, a control panel 18 is disposed on the front surface of the heating base 5, and the control panel 18 corresponds to the inside of the heating base 5.

As shown in fig. 1 to 4, the present invention provides a technical solution: the utility model provides a distillation plant is used in bromoacetonitrile preparation convenient to maintain, the top bolt of atmospheric control case 1 has cooler bin 6, the inside of cooler bin 6 is provided with valve fluid-discharge tube 7, the outside of valve fluid-discharge tube 7 is provided with cooling cylinder 8, and the one end of valve fluid-discharge tube 7 is corresponding with the inside of atmospheric control case 1, the inside of cooler bin 6 is provided with trades liquid mechanism 9, distill solution through having designed heater bin 2, solution sends to in the valve fluid-discharge tube 7 through the current collection fill 13, carry out the condensation through the coolant liquid in the cooling cylinder 8 and collect, can also change the coolant liquid in the cooling cylinder 8 through trading liquid mechanism 9, the condensation effect has been improved, be convenient for liquefy distilled gas, avoid influencing the staff and operate, use burden has been lightened, and is worth using widely.

Referring to fig. 2, in order to facilitate the replacement of the cooling water in the cooling cylinder 8, the liquid changing mechanism 9 includes a liquid changing box 10, a circulating pump 11 is connected to the bottom of the liquid changing box 10 and located inside the cooling box 6, and the circulating pump 11 is connected to one side of the cooling cylinder 8.

Referring to fig. 1, 2 and 3, in order to facilitate the solution to be delivered into the heating box 2 for distillation, one side of the air pressure control box 1 is connected to a liquid inlet pipe 12, and one end of the liquid inlet pipe 12 corresponds to the inside of the heating box 2.

Referring to fig. 2, in order to facilitate the distilled solution to be sent to the valve drain pipe 7 for condensation, a collecting hopper 13 is bolted to the top between the inner walls of the air pressure control box 1, and the top of the collecting hopper 13 is communicated with one end of the valve drain pipe 7.

Referring to fig. 1, 2 and 3, in order to facilitate the solution discharge, a discharge pipe 14 is connected to one side of the air pressure control box 1 and corresponds to the heating box 2, and a valve 15 is disposed on the front surface of the discharge pipe 14.

The working principle is as follows: tetramethyl ammonium bromide and chloroacetonitrile are dissolved in an acetone solvent in advance and then are conveyed into a heating box 2 of an air pressure control box 1 from a liquid inlet pipe 12, the air pressure in the heating box 2 is controlled to be 3.19kPa at the moment, a heating seat 5 is opened to distill the solution in the heating box 2, the temperature (70-75 ℃) is controlled through a control screen 18, a constant-speed motor 4 is opened to drive a stirring rod 3 to uniformly heat the solution during distillation, the solution is distilled through the heating box 2, after the opening and closing of a valve liquid discharge pipe 7 are started, the solution is conveyed into the valve liquid discharge pipe 7 through a collecting hopper 13, the cooling liquid in a cooling cylinder 8 is condensed and collected, the filtration is carried out, filter residues are placed into a container, methanol is added as a solvent, recrystallization refining is carried out to obtain tetramethyl ammonium chloride, the filtrate is rectified, the solvents acetone and acetonitrile are firstly recovered, the rectification is continued to obtain bromoacetonitrile, the cooling liquid in the cooling cylinder 8 can be replaced through the liquid replacing mechanism 9, and the condensation effect is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a distillation plant is used in bromoacetonitrile preparation convenient to maintain, includes atmospheric pressure control case (1), its characterized in that: a heating box (2) is arranged in the air pressure control box (1), a stirring rod (3) is rotatably connected between the inner walls of the heating box (2), a constant-speed motor (4) is bolted on one side of the air pressure control box (1), the output end of the constant speed motor (4) is bolted with one end of the stirring rod (3), the bottom of the inner wall of the air pressure control box (1) is provided with a heating seat (5), the top of the heating seat (5) corresponds to the bottom of the heating box (2), the top of the air pressure control box (1) is bolted with a cooling box (6), a valve liquid discharge pipe (7) is arranged in the cooling box (6), a cooling cylinder (8) is arranged outside the valve liquid discharge pipe (7), one end of the valve liquid discharge pipe (7) corresponds to the inside of the air pressure control box (1), and a liquid changing mechanism (9) is arranged inside the cooling box (6).

2. The distillation device for bromoacetonitrile preparation convenient for maintenance according to claim 1, wherein: the liquid changing mechanism (9) comprises a liquid changing box (10), the bottom of the liquid changing box (10) is communicated with a circulating pump (11) which is positioned in the cooling box (6), and the circulating pump (11) is communicated with one side of the cooling cylinder (8).

3. The distillation device for bromoacetonitrile preparation convenient for maintenance according to claim 1, wherein: one side of the air pressure control box (1) is communicated with a liquid inlet pipe (12), and one end of the liquid inlet pipe (12) corresponds to the inside of the heating box (2).

4. The distillation device for bromoacetonitrile preparation convenient for maintenance according to claim 1, wherein: the top between the inner walls of the air pressure control box (1) is bolted with a flow collecting hopper (13), and the top of the flow collecting hopper (13) is communicated with one end of a valve drain pipe (7).

5. The distillation device for bromoacetonitrile preparation convenient for maintenance according to claim 1, wherein: a discharge pipe (14) is communicated with one side of the air pressure control box (1) and the position corresponding to the heating box (2), and a valve (15) is arranged on the front surface of the discharge pipe (14).

6. The distillation device for bromoacetonitrile preparation convenient for maintenance according to claim 1, wherein: four corners of the bottom of the air pressure control box (1) are bolted with stabilizing seats (16), and the stabilizing seats (16) correspond to the bottom of the air pressure control box (1).

7. The distillation device for bromoacetonitrile preparation convenient for maintenance according to claim 2, wherein: the front surface of the cooling box (6) is embedded with a heat dissipation net (17), and the heat dissipation net (17) corresponds to one side of the circulating pump (11).

8. The distillation device for bromoacetonitrile preparation convenient for maintenance according to claim 1, wherein: the front surface of the heating seat (5) is provided with a control screen (18), and the control screen (18) corresponds to the inside of the heating seat (5).