CN217246827U

CN217246827U - Special stills of aluminium triethyl trichloride

Info

Publication number: CN217246827U
Application number: CN202220691420.9U
Authority: CN
Inventors: 王建华; 祝庆旭; 王丛军
Original assignee: Yantai Lianli Chemical Co ltd
Current assignee: Yantai Lianli Chemical Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-23
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses a special distillation kettle for aluminium triethyl trichloride, which comprises a kettle cover and a kettle body; a motor is arranged in the center of the top of the kettle cover, the motor is connected with a rotating shaft, the rotating shaft is connected with a stirring paddle, and a feeding pipe, a nitrogen introducing pipe and a pressure detector are arranged at the top of the kettle cover; the bottom of the kettle body is provided with supporting legs, an interlayer is arranged outside the kettle body, a medium inlet is formed in the position, close to the bottom, of the interlayer, a medium outlet is formed in the position, close to the top, of the interlayer, a distillation pipe is connected to the position, close to the outer wall of the top, of the kettle body, the top of the distillation pipe is connected with a condensation pipe, the condensation pipe is connected with a vacuum pump, the vacuum pump is further connected with a nitrogen recovery pipe, a liquid level detector is arranged on the middle upper portion of the outer wall of the kettle body, and a discharging pipe is arranged at the bottom of the kettle body.

Description

Special stills of aluminium triethyl trichloride

Technical Field

The utility model belongs to the technical field of stills, concretely relates to special stills of aluminium triethyl trichloride.

Background

Triethyl aluminium trichloride is a common chemical raw material, is mainly used for synthesizing reaction intermediates, polymerization catalysts and catalysts for aromatic derivative ammonification, is prepared by reaction of aluminium and chloroethane in industrial production, a reaction kettle is usually used as a reaction vessel, distillation separation is carried out after the reaction is finished, and triethyl aluminium trichloride is in contact with air and easily generates spontaneous combustion, so that great potential safety hazards exist. The existing distillation still adopts a method of introducing nitrogen to isolate air, but the nitrogen is continuously discharged along with distillation and needs to be continuously supplemented, so that the problems of large nitrogen usage amount and high production cost are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art, providing a special stills for triethyl aluminum trichloride, being equipped with a nitrogen recovery device, enabling nitrogen to be recycled, and effectively reducing the production cost.

In order to achieve the above object, the utility model provides a following technical scheme: a special distillation kettle for triethyl aluminium trichloride comprises a kettle cover and a kettle body; a motor is arranged in the center of the top of the kettle cover, the motor is connected with a rotating shaft, the rotating shaft is connected with a stirring paddle, and a feeding pipe, a nitrogen introducing pipe and a pressure detector are arranged at the top of the kettle cover; the bottom of the kettle body is provided with supporting legs, an interlayer is arranged outside the kettle body, a medium inlet is formed in the position, close to the bottom, of the interlayer, a medium outlet is formed in the position, close to the top, of the interlayer, a distillation pipe is connected to the position, close to the outer wall of the top, of the kettle body, the top of the distillation pipe is connected with a condensation pipe, the condensation pipe is connected with a vacuum pump, the vacuum pump is further connected with a nitrogen recovery pipe, a liquid level detector is arranged on the middle upper portion of the outer wall of the kettle body, and a discharging pipe is arranged at the bottom of the kettle body.

Preferably, the stirring paddle is in a shape of Chinese character hui.

Preferably, the condenser pipe is of a double-layer structure, a cooling inlet is formed in the position, close to the bottom, of the outer layer of the condenser pipe, and a cooling outlet is formed in the position, close to the top, of the outer layer of the condenser pipe.

Preferably, the bottom of the kettle body is provided with a temperature detector.

Preferably, the kettle cover is connected with the kettle body through a sealing screw.

Preferably, solenoid valves are respectively arranged between the feeding pipe, the nitrogen introducing pipe and the kettle cover.

Preferably, solenoid valves are respectively arranged between the distillation pipe, the discharge pipe and the kettle body.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, the design is simple, the cost is low, and the production and the manufacture are easy; secondly, the triethyl aluminum trichloride is effectively prevented from contacting with air by filling nitrogen, and the nitrogen can be recovered, so that the production cost is effectively reduced.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

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

FIG. 1 is the overall schematic diagram of the distillation still of the present invention.

In the figure: 1. the reactor comprises a reactor body, 2, a reactor cover, 3, a sealing screw, 4, a medium outlet, 5, a rotating shaft, 6, a supporting leg, 7, a feeding pipe, 8, a motor, 9, a nitrogen introducing pipe, 10, a pressure detector, 11, a cooling outlet, 12, a nitrogen recovery pipe, 13, a vacuum pump, 14, a condensing pipe, 15, a cooling inlet, 16, a distillation pipe, 17, a liquid level detector, 18, an interlayer, 19, a stirring paddle, 20, a medium inlet, 21, a temperature detector, 22 and a discharging 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1, the present invention provides a technical solution: a special distillation kettle for triethyl aluminium trichloride comprises a kettle cover 2 and a kettle body 1; a motor 8 is arranged at the center of the top of the kettle cover 2, the motor 8 is connected with a rotating shaft 5, the rotating shaft 5 is connected with a stirring paddle 19, and a feeding pipe 7, a nitrogen introducing pipe 9 and a pressure detector 10 are arranged at the top of the kettle cover 2; the bottom of the kettle body 1 is provided with supporting legs 6, an interlayer 18 is arranged outside the kettle body 1, the interlayer 18 is provided with a medium inlet 20 near the bottom, the interlayer 18 is provided with a medium outlet 4 near the top, the kettle body 1 is connected with a distillation pipe 16 near the outer wall of the top, the top of the distillation pipe 16 is connected with a condensation pipe 14, the condensation pipe 14 is connected with a vacuum pump 13, the vacuum pump 13 is further connected with a nitrogen recovery pipe 12, the middle upper part of the outer wall of the kettle body 1 is provided with a liquid level detector 17, and the bottom of the kettle body 1 is provided with a discharging pipe 22.

Specifically, the stirring paddle 19 is shaped like a Chinese character 'hui'.

Specifically, the condenser pipe 14 is of a double-layer structure, a cooling inlet 15 is formed in the position, close to the bottom, of the outer layer of the condenser pipe 14, and a cooling outlet 11 is formed in the position, close to the top, of the outer layer of the condenser pipe 14.

Specifically, a temperature detector 21 is arranged at the bottom of the kettle body 1.

Specifically, the kettle cover 2 is connected with the kettle body 1 through a sealing screw 3.

Specifically, electromagnetic valves are respectively arranged between the feeding pipe 7, the nitrogen introducing pipe 9 and the kettle cover 2.

Specifically, electromagnetic valves are respectively arranged between the distillation outlet pipe 16, the discharge pipe 22 and the kettle body 1

The working principle is as follows: connecting and sealing the kettle cover 2 and the kettle body 1 through a sealing screw 3, connecting a distillation pipe 16 into a closed nitrogen charging storage tank, connecting a nitrogen recovery pipe 12 with the nitrogen storage tank, opening a nitrogen introducing pipe 9 and a discharging pipe 22 electromagnetic valve, charging nitrogen and exhausting the kettle body 1, after the exhausting is finished, closing the discharging pipe 22 electromagnetic valve, opening an electromagnetic valve between the distillation pipe 16 and the kettle body 1, opening a vacuum pump 13, exhausting the pipeline, closing the nitrogen introducing pipe 9 electromagnetic valve, detecting a certain negative pressure in the kettle body 1 through a pressure detector 10, closing the electromagnetic valve between the distillation pipe 16 and the kettle body 1, opening an electromagnetic valve of a feeding pipe 7, adding a degassing raw material into the kettle body 1, opening a motor 8, rotating a stirring paddle 19, closing the electromagnetic valve of the feeding pipe 7 after a liquid level detector 17 detects a numerical value, introducing hot oil into a medium inlet 20, detecting the distillation temperature in the kettle body 1 through a temperature detector 21, adding cooling water into a cooling inlet 15, opening an electromagnetic valve between a distillation outlet pipe 16 and a kettle body 1, opening an electromagnetic valve of a nitrogen introducing pipe 9 to introduce nitrogen, opening a vacuum pump 13, enabling a pressure detector 10 to keep a certain pressure value through the work of the vacuum pump 13, enabling triethyl aluminum trichloride to keep a distillation state, distilling the nitrogen into a storage tank through the distillation outlet pipe 16 after condensing in a condensation pipe 14, recovering the nitrogen discharged through the vacuum pump 13 through a nitrogen recovery pipe 12, closing the electromagnetic valve of the nitrogen introducing pipe 9 and the vacuum pump 13 after distillation is finished, closing the electromagnetic valve between the distillation outlet pipe 16 and the kettle body 1, opening a sealing screw 3, and opening an electromagnetic valve of a discharging pipe 22 to discharge tailings.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special stills of aluminium triethyl trichloride, includes kettle cover (2) and the kettle body (1), its characterized in that: a motor (8) is arranged at the center of the top of the kettle cover (2), the motor (8) is connected with a rotating shaft (5), the rotating shaft (5) is connected with a stirring paddle (19), and a feeding pipe (7), a nitrogen introducing pipe (9) and a pressure detector (10) are arranged at the top of the kettle cover (2); cauldron body (1) bottom is equipped with landing leg (6), cauldron body (1) is equipped with intermediate layer (18) outward, intermediate layer (18) are close to bottom department and are equipped with medium entry (20), intermediate layer (18) are close to top department and are equipped with medium export (4), cauldron body (1) are being close to and are being connected distillation tube (16) on the top outer wall, distillation tube (16) top links to each other with condenser pipe (14), condenser pipe (14) link to each other with vacuum pump (13), vacuum pump (13) still link to each other with nitrogen recovery pipe (12), upper portion is equipped with level detector (17) in cauldron body (1) outer wall, cauldron body (1) bottom is equipped with blowing pipe (22).

2. The special distillation kettle for triethyl aluminum trichloride according to claim 1, wherein: the stirring paddle (19) is shaped like a Chinese character 'hui'.

3. The special distillation kettle for triethyl aluminum trichloride according to claim 1, wherein: condenser pipe (14) are bilayer structure, condenser pipe (14) skin is close bottom department and is equipped with cooling inlet (15), condenser pipe (14) skin is close top department and is equipped with cooling outlet (11).

4. The special distillation kettle for triethyl aluminum trichloride according to claim 1, wherein: the bottom of the kettle body (1) is provided with a temperature detector (21).

5. The special distillation kettle for triethyl aluminum trichloride according to claim 1, wherein: the kettle cover (2) is connected with the kettle body (1) through a sealing screw (3).

6. The special distillation kettle for triethyl aluminum trichloride according to claim 1, wherein: electromagnetic valves are respectively arranged between the feeding pipe (7), the nitrogen pipe (9) and the kettle cover (2).

7. The special distillation kettle for triethyl aluminum trichloride according to claim 1, wherein: electromagnetic valves are respectively arranged between the distillation outlet pipe (16), the discharge pipe (22) and the kettle body (1).