CN218890541U

CN218890541U - Continuous production system for 2, 4-di-tert-butylphenol

Info

Publication number: CN218890541U
Application number: CN202223195569.7U
Authority: CN
Inventors: 徐志刚; 汪金彪; 于新伟; 于东波; 徐善平; 赵德钰; 王珍珠; 于永良; 张佳森; 于立波; 闫庆斌; 孙军
Original assignee: Zibo Kewei Chemical Co ltd
Current assignee: Zibo Kewei Chemical Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-04-21
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to the technical field of butylphenol production, in particular to a continuous production system of 2, 4-di-tert-butylphenol, which comprises the following components: a raw material storage tank, a catalyst premixing tank, a mixing tank, a reaction tank and a filter; the raw material storage tank, the mixing tank, the reaction tank and the filter are sequentially connected through pipelines; the catalyst premixing tank is connected with the raw material storage tank, and the catalyst premixing tank is connected with the mixing tank; the upper part of the catalyst premixing tank is provided with a catalyst constant-speed adder; according to the utility model, the catalyst is premixed by changing the adding mode of the catalyst; through setting up two jar bodies, with raw materials mixing process and reaction process separately, shorten reaction cycle, reduce the accessory substance that produces because of the reaction is insufficient, the blending tank cooperates with the retort each other, carries out production continuously, improves production efficiency.

Description

Continuous production system for 2, 4-di-tert-butylphenol

Technical Field

The utility model relates to the technical field of butylphenol production, in particular to a continuous production system of 2, 4-di-tert-butylphenol.

Background

2, 4-di-tert-butylphenol, white or pale yellow crystalline solid, has a phenolic odor. Is easily dissolved in alcohols, esters, alkanes, aromatic hydrocarbon and other organic solvents, and is almost insoluble in water. The 2, 4-di-tert-butylphenol is used for preparing hindered phenol antioxidants, rubber antioxidants, cresol-formaldehyde resins and plasticizers, can be used as disinfectants in medicine, can be used as surfactants for preparing various excellent antioxidants and light stabilizers, and can be used for preparing natural rubber and synthetic plastic antioxidants, fuel stabilizers, ultraviolet absorbers, pesticides, dye intermediates and the like.

In the current process of producing 2, 4-di-tert-butylphenol, the catalyst and raw materials are mixed and reacted by using the same tank body, and the batch method is adopted for production, under the condition, the uneven mixing of the catalyst and the raw materials is easy to cause, the reaction period is long, and the production efficiency is low, so that the continuous production system of the 2, 4-di-tert-butylphenol is provided.

Disclosure of Invention

The utility model aims to provide a continuous production system of 2, 4-di-tert-butylphenol, which aims to solve the problems of uneven mixing of a catalyst and raw materials, long reaction period and low production efficiency in the prior art.

In order to solve the technical problems, the utility model provides the following technical scheme:

a continuous production system for 2, 4-di-tert-butylphenol, comprising:

a raw material storage tank, a catalyst premixing tank, a mixing tank, a reaction tank and a filter;

the raw material storage tank, the mixing tank, the reaction tank and the filter are sequentially connected through pipelines;

the catalyst premixing tank is connected with the raw material storage tank, is connected with the mixing tank and is used for adding a catalyst at a constant speed and premixing with the raw material;

the upper part of the catalyst premixing tank is provided with a catalyst constant-speed adder.

The filter is arranged at the lower part of the reaction tank and is used for filtering out the added catalyst and outputting a pure product.

Further, the catalyst constant-speed feeder comprises a storage hopper, a rotating wheel and a feeding pipe from top to bottom; the hopper lower part is provided with the swiveling wheel and places the chamber, the swiveling wheel sets up the swiveling wheel is placed the intracavity, be provided with the recess on the periphery of swiveling wheel, the swiveling wheel be used for with the catalyst in the storage hopper is at uniform velocity to be carried in the feed pipe.

Further, the inner diameter of the rotating wheel placing cavity is the same as the diameter of the rotating wheel, so that when the rotating wheel rotates, the outer surface of the rotating wheel in the circumferential direction is attached to the rotating wheel placing cavity.

Further, the rotating wheel placing cavity is provided with a first opening and a second opening, the first opening is communicated with the upper part of the storage hopper, the second opening is communicated with the feeding pipe, and the cross sectional areas of the first opening and the second opening are larger than the cross sectional area of the groove; the cross sectional areas of the first opening and the second opening are smaller than the cross sectional area of the rotating wheel in the diameter direction.

The groove is matched with the rotating wheel placing cavity to form a closed space.

Further, the mixing tank is also provided with a stirring device, the stirring device comprises a stirring motor, a stirring shaft and fan blades, and the stirring motor is fixedly arranged above the mixing tank; the stirring shaft is in transmission connection with the stirring motor, and penetrates into the mixing tank; and fan blades are arranged on the stirring shaft.

Further, a constant temperature device is arranged in the reaction tank, and the constant temperature device is a heat exchange tube coiled along the axial direction of the reaction tank.

The heat exchange tubes are closely arranged with each other.

The constant temperature device comprises two sections of heat exchange pipes which are coiled and arranged and is used for accurately maintaining the temperature in the reaction tank.

Furthermore, a diverter valve is arranged at the joint of the raw material storage tank, the catalyst premixing tank and the mixing tank.

The diverter valve is used for regulating and controlling the proportion of raw materials entering the catalyst premixing tank and the mixing tank.

Furthermore, a raw material pump is arranged on the connecting pipelines of the raw material storage tank, the catalyst premixing tank and the mixing tank.

Further, a conveying pump is arranged on a connecting pipeline of the mixing tank and the reaction tank.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the catalyst is premixed by changing the adding mode of the catalyst; through setting up two jar bodies, with raw materials mixing process and reaction process separately, shorten reaction cycle, reduce the accessory substance that produces because of the reaction is insufficient, the blending tank cooperates with the retort each other, carries out production continuously, improves production efficiency.

2. The utility model utilizes the stirring device to further mix the premixed catalyst and the raw materials which enter the stirring tank, ensures the high dispersity of the catalyst in the raw materials and improves the reaction efficiency.

3. The utility model utilizes the two-section heat exchange device to accurately control the reaction temperature in the reaction tank and improve the reaction efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic structural view of a continuous production system of 2, 4-di-tert-butylphenol according to the present utility model;

FIG. 2 is a schematic diagram of the catalyst constant velocity applicator of FIG. 1;

in the figure: 1. a raw material storage tank; 2. a catalyst premix tank; 3. a mixing tank; 4. a reaction tank; 5. a filter; 6. a catalyst uniform speed feeder; 7. a storage hopper; 8. a rotating wheel; 9. a feed pipe; 10. a rotating wheel placement cavity; 11. a groove; 12. a first opening; 13. a second opening; 14. a stirring motor; 15. a stirring shaft; 16. a fan blade; 17. a thermostat device; 18. a diverter valve; 19. a raw material pump; 20. a transfer pump.

Detailed Description

The utility model will be described in more detail with reference to examples.

In one embodiment, as shown in FIG. 1, a continuous 2, 4-di-tert-butylphenol production system comprises:

a raw material storage tank 1, a catalyst premixing tank 2, a mixing tank 3, a reaction tank 4 and a filter 5;

the raw material storage tank 1, the mixing tank 3, the reaction tank 4 and the filter 5 are connected in sequence through pipelines;

the catalyst premixing tank 2 is connected with the raw material storage tank 1, the catalyst premixing tank 2 is connected with the mixing tank 3, and the catalyst premixing tank 2 is used for adding the catalyst at a constant speed and premixing with the raw material;

the upper part of the catalyst premixing tank 2 is provided with a catalyst constant speed adder 6.

The filter 5 is disposed at the lower portion of the reaction tank 4, and is used for filtering out the added catalyst and outputting pure product.

It can be understood that during the production process, the catalyst enters the catalyst premixing tank 2 at a constant speed through the catalyst constant speed feeder 6, is premixed with the raw materials in the raw material storage tank 1, pre-dissolves the catalyst, then the pre-mixture enters the mixing tank 3 from the catalyst premixing tank 2 and is mixed again, so that the catalyst is uniformly dispersed in the raw materials, then enters the reaction tank 4 for reaction, and during the reaction process of the reaction tank 4, the mixing operation is simultaneously carried out in the mixing tank 3, the production efficiency of the system is improved, and after the reaction is finished, the catalyst is filtered out through the filter 5, so that the product is produced.

In another embodiment, as shown in fig. 1-2, the catalyst constant speed adder 6 comprises, from top to bottom, a storage hopper 7, a rotating wheel 8 and a feeding pipe 9; the lower part of the hopper is provided with a rotating wheel placing cavity 10, a rotating wheel 8 is arranged in the rotating wheel placing cavity 10, a groove 11 is formed in the periphery of the rotating wheel, and the rotating wheel is used for conveying the catalyst in the storage hopper 7 into the feeding pipe 9 at a constant speed.

It will be appreciated that the inner diameter of the rotor placement chamber 10 is the same as the diameter of the rotor 8 such that when the rotor 8 is rotated, the circumferential outer surface of the rotor 8 engages the rotor placement chamber 10.

It will be appreciated that the rotating wheel placing chamber 10 is provided with a first opening 12 and a second opening 13, the first opening 12 communicates with the upper part of the hopper 7, the second opening 13 communicates with the feed pipe 9, and the cross-sectional area of the first opening 12 and the second opening 13 is larger than the cross-sectional area of the groove 11; the cross-sectional area of the first opening 12 and the second opening 13 is smaller than the cross-sectional area of the rotating wheel 8 in the diameter direction.

The groove 11 is matched with the rotating wheel placing cavity 10 to form a closed space.

It can be appreciated that during use, the circumferential outer surface of the rotating wheel 8 is attached to the rotating wheel placing cavity 10, so that the same quantity of catalysts is ensured for each transportation; under the action of gravity, the grooves 11 are fully filled with the catalyst, and the catalyst falls into the feeding pipe 9, so that the catalyst is added into the catalyst premixing tank 2 at a constant speed.

In another embodiment, as shown in fig. 1-2, the mixing tank 3 is further provided with a stirring device, the stirring device comprises a stirring motor 14, a stirring shaft 15 and fan blades 16, and the stirring motor 14 is fixedly arranged above the mixing tank 3; the stirring shaft 15 is in transmission connection with the stirring motor 14, and the stirring shaft 15 penetrates into the mixing tank 3; the stirring shaft 15 is provided with a fan blade 16.

It will be appreciated that the reaction tank 4 is internally provided with a thermostat 17, the thermostat 17 being a heat exchange tube coiled in the axial direction of the reaction tank 4.

The heat exchange tubes are closely arranged with each other.

The thermostat 17 includes two heat exchange pipes which are coiled and arranged for accurately maintaining the temperature in the reaction tank 4.

It will be appreciated that the feed storage tank 1 is provided with a diverter valve 18 at the junction with the catalyst premix tank 2 and the mixing tank 3.

The diverter valve 18 is used to regulate the ratio of the raw materials entering the catalyst premix tank 2 and the mix tank 3.

It will be appreciated that the raw material pump 19 is provided on the connecting pipes of the raw material storage tank 1 with the catalyst premixing tank 2 and the mixing tank 3.

It will be appreciated that the connecting pipe of the mixing tank 3 and the reaction tank 4 is provided with a transfer pump 20.

It can be understood that in the process of the reaction, the temperature in the reaction tank 4 is controlled by the constant temperature device 17, the constant temperature device 17 is arranged in a segmented way, the reaction temperature is accurately controlled, after the reaction is finished, the reaction tank 4 is filtered by the filter 5 at the lower part, the finished product is discharged, and the mixed liquid in the mixing tank 3 is pumped into the reaction tank 4 by the conveying pump 20 for reaction.

The proportion of the raw materials entering the catalyst premixing tank 2 and the mixing tank 3 is regulated by the action of the flow dividing valve 18, and the feeding speed is controlled by the action of the raw material pump 19.

Of course, the foregoing is merely preferred embodiments of the present utility model and is not to be construed as limiting the scope of the embodiments of the present utility model. The present utility model is not limited to the above examples, and those skilled in the art will appreciate that the present utility model is capable of equally varying and improving within the spirit and scope of the present utility model.

Claims

1. A continuous production system for 2, 4-di-tert-butylphenol, comprising:

a raw material storage tank (1), a catalyst premixing tank (2), a mixing tank (3), a reaction tank (4) and a filter (5);

the raw material storage tank (1), the mixing tank (3), the reaction tank (4) and the filter (5) are sequentially connected through pipelines;

the catalyst premixing tank (2) is connected with the raw material storage tank (1), the catalyst premixing tank (2) is connected with the mixing tank (3), and the catalyst premixing tank (2) is used for adding a catalyst at a constant speed and premixing with the raw material;

the upper part of the catalyst premixing tank (2) is provided with a catalyst uniform speed adder (6).

2. The continuous production system of 2, 4-di-tert-butylphenol according to claim 1, wherein the catalyst constant speed adder (6) comprises, from top to bottom, a storage hopper (7), a rotating wheel (8) and a feeding pipe (9); the automatic feeding device is characterized in that a rotating wheel placing cavity (10) is formed in the lower portion of the hopper, the rotating wheel (8) is arranged in the rotating wheel placing cavity (10), a groove (11) is formed in the periphery of the rotating wheel, and the rotating wheel is used for conveying the catalyst in the storage hopper (7) to the feeding pipe (9) at a constant speed.

3. The continuous 2, 4-di-tert-butylphenol production system according to claim 2, wherein the inner diameter of the rotating wheel placing cavity (10) is the same as the diameter of the rotating wheel (8), so that the outer circumferential surface of the rotating wheel (8) is in contact with the rotating wheel placing cavity (10) when the rotating wheel (8) rotates.

4. Continuous production system of 2, 4-di-tert-butylphenol according to claim 2, characterized in that the rotating wheel placing chamber (10) is provided with a first opening (12), a second opening (13), the first opening (12) communicating with the upper part of the hopper (7), the second opening (13) communicating with the feed pipe (9), the cross-sectional area of the first opening (12) and the second opening (13) being larger than the cross-sectional area of the recess (11); the cross-sectional area of the first opening (12) and the second opening (13) is smaller than the cross-sectional area of the rotating wheel (8) in the diameter direction.

5. The continuous production system of 2, 4-di-tert-butylphenol according to claim 1, wherein the mixing tank (3) is further provided with a stirring device, the stirring device comprises a stirring motor (14), a stirring shaft (15) and fan blades (16), and the stirring motor (14) is fixedly arranged above the mixing tank (3); the stirring shaft (15) is in transmission connection with the stirring motor (14), and the stirring shaft (15) penetrates into the mixing tank (3); the stirring shaft (15) is provided with fan blades (16).

6. Continuous production system of 2, 4-di-tert-butylphenol according to claim 1, characterized in that the inside of the reaction tank (4) is provided with a thermostat (17), the thermostat (17) being a heat exchange tube coiled in the axial direction of the reaction tank (4).

7. The continuous 2, 4-di-tert-butylphenol production system according to claim 1, wherein a diverter valve (18) is arranged at the joint of the raw material storage tank (1) and the catalyst premixing tank (2) and the mixing tank (3).

8. The continuous production system of 2, 4-di-tert-butylphenol according to claim 1, wherein a raw material pump (19) is arranged on a connecting pipeline between the raw material storage tank (1) and the catalyst premixing tank (2) and a connecting pipeline between the raw material storage tank and the mixing tank (3).

9. Continuous production system of 2, 4-di-tert-butylphenol according to claim 1, characterized in that a transfer pump (20) is arranged on the connection pipe of the mixing tank (3) and the reaction tank (4).