Reduced pressure distillation device for preparing high-purity p-fluorobenzoyl chloride

Abstract

The utility model relates to the technical field of distillation devices, and discloses a reduced pressure distillation device for preparing high-purity p-fluorobenzoyl chloride, which comprises a base support frame, a control panel is fixedly mounted at the top of the base support frame, a mounting groove is formed in the top of the base support frame, and the control panel is fixedly mounted in the mounting groove. A distillation retort body is fixedly mounted in the mounting groove, a feeding pipeline is arranged at the top of the distillation retort body in a communicating manner, and a discharging pipeline is arranged on the outer wall of the distillation retort body in a communicating manner; the distillation cooling assemblies are arranged inside and outside the distillation retort body, fluorobenzoyl chloride is conveyed into the distillation retort body through a feeding pipeline by arranging a motor, the motor drives a stirring rod to enable a mounting lantern ring to drive stirring blades to stir the fluorobenzoyl chloride, heating and rapid distillation are facilitated, and when gas in the distillation retort body is too much, the gas in the distillation retort body is not too much. When the piston rod is upward, the hot air storage ball starts to be expanded for reminding, so that the effect of accelerating the distillation speed is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation devices, in particular to a vacuum distillation device for preparing high-purity p-fluorobenzoyl chloride. Background Art

[0002] Fluorobenzoyl chloride is a chemical substance, which is a colorless or light yellow liquid, volatile at room temperature, and can be dissolved in a variety of organic solvents. p-Fluorobenzoyl chloride is an acyl halide compound that can react with nucleophiles such as amines and alcohols to generate corresponding amino compounds or ester compounds. In addition, it can also generate products such as p-fluorobenzoic acid through base-catalyzed addition reactions. Vacuum distillation refers to the distillation operation of separating a mixture under reduced pressure. By reducing the system pressure, the bubble point of the mixed solution is lowered, and it boils under lower pressure to reduce the temperature of the distillation operation. In vacuum distillation, the relative volatility between components will generally increase, making it easier to separate. For the separation of toxic substances, vacuum distillation can prevent the leakage of highly toxic materials and reduce pollution to the environment.

[0003] When the current pressure reducing device is performing high-temperature distillation, the temperature in the still changes greatly. When the gas pressure is high, there is a risk of the still bursting. At the same time, the cooling effect in the general distillation device is poor, resulting in poor cooling temperature during distillation, thereby reducing the effect of condensing steam. Utility Model Content

[0004] The utility model aims to provide a vacuum distillation device for preparing high-purity p-fluorobenzoyl chloride, so as to achieve the purpose of accelerating the distillation speed and cooling the distillation tank.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum distillation device for preparing high-purity p-fluorobenzoyl chloride, comprising: a base support frame, wherein a control panel is fixedly installed on the top of the base support frame, a mounting groove is opened on the top of the base support frame, and a distillation tank body is fixedly installed inside the mounting groove, a feed pipe is connected to the top of the distillation tank body, and a discharge pipe is connected to the outer wall of the distillation tank body; a distillation cooling component, wherein the distillation cooling component is arranged inside and outside the distillation tank body.

[0006] Preferably, the distillation cooling assembly comprises: a distillation portion, which is arranged inside and above the distillation tank body; and a cooling portion, which is arranged inside and outside the distillation tank body.

[0007] Preferably, the distillation part includes: a motor, which is arranged below the distillation tank body and fixedly mounted on the bottom of the distillation tank body through a motor cover; a sealing ring, which is fixedly mounted on the top of the distillation tank body; a stirring rod is fixedly connected to the output end of the motor, and mounting rings are evenly and equidistantly fixedly mounted on the outside of the stirring rod, and there are four groups of mounting rings in total, and stirring blades are fixedly mounted on the outer wall of the mounting rings.

[0008] Preferably, a mounting plate is fixedly mounted on the top of the sealing ring, fixing holes are evenly and equidistantly formed on the top of the mounting plate, and positioning screws are fixedly mounted inside the fixing holes.

[0009] Preferably, a connecting pipe is provided below the sealing ring, and the connecting pipe is fixedly mounted on the top inner wall of the distillation tank body, and an ejection hole is provided at the top of the connecting pipe.

[0010] Preferably, a hot air collecting ball is connected to the top of the mounting plate, and a piston rod is provided inside the connecting pipe.

[0011] Preferably, the cooling part includes: an installation base plate, which is arranged on one side of the base support frame; a cooling water tank is fixedly installed on the top of the installation base plate, a water supply pipe is connected to the top of the cooling water tank, and the other end of the water supply pipe is connected to the inside of the distillation tank body, and a control valve is provided on the outer wall of the water supply pipe, and the control valve is fixedly installed on the top of the cooling water tank.

[0012] Preferably, a circulation pump is fixedly installed on the top of the cooling water tank for circulating and accelerating the replacement of cooling water, and a water outlet pipe is connected to one side of the cooling water tank.

[0013] The utility model provides a vacuum distillation device for preparing high-purity p-fluorobenzoyl chloride. It has the following beneficial effects:

[0014] (1) The utility model is provided with a motor to transport fluorobenzoyl chloride to the interior of the distillation tank body through a feed pipe. The motor drives the stirring rod so that the mounting ring drives the stirring blades to stir the fluorobenzoyl chloride to facilitate heating and rapid distillation. When there is too much gas inside the distillation tank body, the piston rod moves upward and the hot gas collection ball begins to expand to remind, thereby achieving the effect of accelerating the distillation speed.

[0015] (2) The utility model is provided with a mounting base plate. When the hot gas collecting ball is expanded, the control panel is controlled to control the valve to open the gas pipeline so that the high-temperature gas entering the interior of the distillation tank body enters the interior of the cooling water tank through the gas pipeline for cooling. The circulating pump is used to circulate the cooling water in the cooling water tank, thereby achieving the effect of cooling the interior of the distillation tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a top view of the distillation cooling component structure of the utility model;

[0018] Figure 3 This is a cross-sectional view of the distillation cooling component structure of the utility model;

[0019] Figure 4 This is a structural view of the distillation part of the distillation cooling component of the utility model.

[0020] In the figure: 1 base support frame, 2 control panel, 3 distillation tank body, 31 heating layer, 32 interlayer, 4 feed pipe, 5 discharge pipe, 6 distillation cooling assembly, 61 distillation part, 611 motor, 612 stirring rod, 613 mounting ring, 614 stirring blade, 615 sealing ring, 616 mounting plate, 617 positioning screw, 618 connecting pipe, 619 ejection hole, 6110 hot air collecting ball, 6111 piston rod, 62 cooling part, 621 mounting bottom plate, 622 cooling water tank, 623 gas pipeline, 624 control valve, 625 circulation pump, 626 water outlet pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Example 1

[0024] A preferred embodiment of a vacuum distillation device for preparing high-purity p-fluorobenzoyl chloride provided by the utility model is as follows: Figure 1-4As shown: A vacuum distillation device for preparing high-purity p-fluorobenzoyl chloride comprises: a base support frame 1, wherein a control panel 2 is fixedly installed on the top of the base support frame 1, a mounting groove is provided on the top of the base support frame 1, and a distillation tank body 3 is fixedly installed inside the mounting groove, a feed pipe 4 is connected to the top of the distillation tank body 3, and a discharge pipe 5 is connected to the outer wall of the distillation tank body 3; a distillation cooling component 6, and the distillation cooling component 6 is arranged inside and outside the distillation tank body 3.

[0025] The distillation cooling assembly 6 includes: a distillation portion 61 , which is disposed inside and above the distillation tank body 3 ; and a cooling portion 62 , which is disposed inside and outside the distillation tank body 3 .

[0026] The distillation part 61 includes: a motor 611, which is arranged below the distillation tank body 3 and fixedly installed on the bottom of the distillation tank body 3 through a motor cover; a sealing ring 615, which is fixedly installed on the top of the distillation tank body 3; an output end of the motor 611 is fixedly connected to a stirring rod 612, and the outside of the stirring rod 612 is evenly and equidistantly fixedly installed with mounting rings 613, and there are four groups in total, and the outer wall of the mounting ring 613 is fixedly installed with a stirring blade 614.

[0027] A mounting plate 616 is fixedly mounted on the top of the sealing ring 615 , and fixing holes are evenly and equidistantly formed on the top of the mounting plate 616 , and positioning screws 617 are fixedly mounted inside the fixing holes.

[0028] A connecting pipe 618 is provided below the sealing ring 615 , and the connecting pipe 618 is fixedly installed on the top inner wall of the distillation tank body 3 , and an ejection hole 619 is opened at the top of the connecting pipe 618 .

[0029] A hot air collecting ball 6110 is connected to the top of the mounting plate 616 , and a piston rod 6111 is provided inside the connecting pipe 618 .

[0030] Furthermore, the present embodiment is provided with a motor 611 to transport fluorobenzoyl chloride to the interior of the distillation tank body 3 through the feed pipe 4. The motor 611 drives the stirring rod 612 so that the mounting ring 613 drives the stirring blade 614 to stir the fluorobenzoyl chloride to facilitate heating and rapid distillation. When there is too much gas inside the distillation tank body 3, the piston rod 6111 moves upward, and the hot gas collecting ball 6110 begins to expand to serve as a reminder, thereby accelerating the distillation speed.

[0031] Example 2

[0032] On the basis of Example 1, a preferred embodiment of a vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride provided by the utility model is as follows: Figure 1-4As shown: the cooling part 62 includes: a mounting base plate 621, which is arranged on one side of the base support frame 1; a cooling water tank 622 is fixedly installed on the top of the mounting base plate 621, a water supply pipe 623 is connected to the top of the cooling water tank 622, and the other end of the water supply pipe 623 is connected to the inside of the distillation tank body 3, and a control valve 624 is movably sleeved on the outer wall of the water supply pipe 623, and the control valve 624 is fixedly installed on the top of the cooling water tank 622.

[0033] A circulation pump 625 is fixedly installed on the top of the cooling water tank 622 for circulating and accelerating the replacement of cooling water. A water outlet pipe 626 is connected to one side of the cooling water tank 622 .

[0034] Furthermore, the present embodiment is provided with a mounting base plate 621. When the hot gas collecting ball 6110 is expanded, the control panel 2 is controlled to control the valve 624 to open the gas pipeline 623 so that the high-temperature gas entering the interior of the distillation tank body 3 enters the interior of the cooling water tank 622 through the gas pipeline 623 for cooling. The circulating pump 625 is used to circulate the cooling water in the cooling water tank 622.

[0035] When in use, first, fluorobenzoyl chloride is transported to the interior of the distillation tank body 3 through the feed pipe 4, and the motor 611 drives the stirring rod 612 so that the mounting ring 613 drives the stirring blade 614 to stir the fluorobenzoyl chloride to facilitate heating and rapid distillation. When there is too much gas inside the distillation tank body 3, the piston rod 6111 moves upward, and the hot gas collecting ball 6110 begins to expand to remind. Further, the control panel 2 is controlled to control the control valve 624 to open the gas pipeline 623 so that the high-temperature gas entering the distillation tank body 3 enters the cooling water tank 622 through the gas pipeline 623 for cooling, and cooperates with the circulating pump 625 to allow the cooling water inside the cooling water tank 622 to be recycled, thereby completing the evaporation of fluorobenzoyl chloride.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride, characterized in that: include: Base support frame (1), A control panel (2) is fixedly mounted on the top of the base support frame (1), a mounting groove is provided on the top of the base support frame (1), and a distillation tank body (3) is fixedly mounted inside the mounting groove, a feed pipe (4) is connected to the top of the distillation tank body (3), and a discharge pipe (5) is connected to the outer wall of the distillation tank body (3); A distillation cooling component (6) is arranged inside and outside the distillation tank body (3).

2. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride according to claim 1, characterized in that: The distillation cooling component (6) comprises: A distillation part (61), wherein the distillation part (61) is arranged inside and above the distillation tank body (3); A cooling part (62), wherein the cooling part (62) is arranged inside and outside the distillation tank body (3).

3. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride according to claim 2, characterized in that: The distillation part (61) comprises: A motor (611), wherein the motor (611) is disposed below the distillation tank body (3) and is fixedly mounted on the bottom of the distillation tank body (3) via a motor cover; A sealing ring (615), wherein the sealing ring (615) is fixedly mounted on the top of the distillation tank body (3); The output end of the motor (611) is fixedly connected to a stirring rod (612), and mounting collars (613) are evenly and equidistantly fixedly mounted on the outside of the stirring rod (612), with a total of four groups, and stirring blades (614) are fixedly mounted on the outer wall of the mounting collars (613).

4. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride according to claim 3, characterized in that: A mounting plate (616) is fixedly mounted on the top of the sealing ring (615), and fixing holes are evenly and equidistantly formed on the top of the mounting plate (616), and positioning screws (617) are fixedly mounted inside the fixing holes.

5. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride according to claim 4, characterized in that: A connecting pipe (618) is provided below the sealing ring (615), and the connecting pipe (618) is fixedly mounted on the top inner wall of the distillation tank body (3), and an ejection hole (619) is provided at the top of the connecting pipe (618).

6. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride according to claim 5, characterized in that: A hot air collecting ball (6110) is connected to the top of the mounting plate (616), and a piston rod (6111) is disposed inside the connecting pipe (618).

7. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride according to claim 2, characterized in that: The cooling part (62) includes: A mounting base plate (621), wherein the mounting base plate (621) is arranged on one side of the base support frame (1); A cooling water tank (622) is fixedly mounted on the top of the mounting base plate (621), a water supply pipe (623) is connected to the top of the cooling water tank (622), and the other end of the water supply pipe (623) is connected to the interior of the distillation tank body (3), a control valve (624) is movably sleeved on the outer wall of the water supply pipe (623), and the control valve (624) is fixedly mounted on the top of the cooling water tank (622).

8. A vacuum distillation apparatus for preparing high-purity p-fluorobenzoyl chloride according to claim 7, characterized in that: A circulation pump (625) is fixedly installed on the top of the cooling water tank (622) for circulating and accelerating the replacement of cooling water. A water outlet pipe (626) is provided on one side of the cooling water tank (622).

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