CN219110934U

CN219110934U - Washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether

Info

Publication number: CN219110934U
Application number: CN202223100944.5U
Authority: CN
Inventors: 冯和悦; 朱秀全; 刘佳伟; 张静
Original assignee: Hebei Jianxin Chemical Co ltd
Current assignee: Hebei Jianxin Chemical Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-06-02
Anticipated expiration: 2032-11-22

Abstract

The utility model relates to a washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether, which comprises a filtering tank body, a feeding pipe, a liquid inlet pipe, a spiral spraying pipe, a stirring device, a filter disc, a liquid outlet pipe and a discharge hole, wherein the feeding pipe, the liquid inlet pipe, the spiral spraying pipe and the stirring device are arranged in the filtering tank body; the liquid storage device is arranged between the liquid outlet pipe and the liquid inlet pipe, the spiral spray pipe is connected with the liquid inlet pipe, the spiral spray pipe can spray materials through spray holes on the spiral spray pipe after methanol is discharged into the spiral spray pipe, mother liquor replacement is carried out, and the materials can fully move from bottom to top when stirred by the stirring paddle, so that washing is more complete; the three-way valve A on the liquid inlet pipe controls the amount of inflow liquid and prevents the liquid from being excessive; methanol of the leaching material can be circulated to crystallization of the next batch material through a liquid storage device, and the discharged liquid is filtered by a filter disc; the utility model can improve the production efficiency and save the cost.

Description

Washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether

Technical Field

The utility model relates to a washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether, belonging to the field of chemical machinery.

Technical Field

In the crystallization and washing process in the synthesis of 4,4' -dinitrodiphenyl ether, two kettles are generally used for crystallization and washing, and excessive consumption of materials and energy is caused, so that the device adopts a large amount of liquid to synchronously perform crystallization and washing, when a solid-liquid mixture enters the kettles, methanol is added to synchronously perform crystallization and washing, after mother liquor is filtered, part of mother liquor can be remained on the materials, so that the materials can contain a large amount of impurities, the products are unqualified, the selling or the next reaction is not performed, the existing equipment consumes a large amount of methanol when the materials are cleaned, the use cost is high, and the energy consumption is high.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a washing spray filter device for 4,4' -dinitrodiphenyl ether, which is capable of recycling methanol, fully washing and saving production cost.

The utility model adopts the following technical scheme:

the utility model comprises a filtering tank body, a feeding pipe arranged at the top of the filtering tank body, a liquid inlet pipe arranged at the top of the filtering tank body and positioned at one side of the feeding pipe, a spiral spray pipe positioned in the inner cavity of the filtering tank body and connected with the liquid inlet pipe, a stirring device arranged in the filtering tank body, a filtering disc arranged on the bottom wall of the filtering tank body, a liquid outlet pipe arranged at the bottom of the filtering tank body and a discharge hole arranged at one side of the bottom of the filtering tank body; a liquid storage device is arranged between the liquid outlet pipe and the liquid inlet pipe, and the inlet of the liquid inlet pipe is communicated with the methanol storage tank; spray holes are uniformly formed in the spiral spray pipe.

The stirring device comprises a stirring motor fixedly arranged at the top of a filtering tank body, a stirring rod positioned in an inner cavity of the filtering tank body and fixedly arranged on a transmission shaft of the stirring motor, and a stirring paddle fixedly arranged at the bottom of the stirring rod, wherein the stirring rod penetrates through a spiral spray pipe; the filter disc is arranged above the liquid outlet of the liquid outlet pipe.

The liquid storage device comprises a liquid storage tank communicated with a liquid inlet pipe through a pipeline, a three-way valve B arranged on a liquid outlet pipe and a liquid storage pipe vertically arranged on the top outlet of the three-way valve B; the liquid outlet end at the top of the liquid storage pipe is connected with the liquid inlet of the liquid storage tank; and a three-way valve A is arranged between the liquid inlet pipe, the pipeline of the liquid storage tank and the spiral spray pipe.

The top of the tank body is provided with an air inlet pipe communicated with the inner cavity of the tank body for carrying out filter pressing on the washed materials.

The utility model is provided with a jacket for heating on the inner wall of the tank body.

According to the utility model, the hydraulic machine connected with the stirring rod is arranged at the top of the tank body, and the stirring motor is arranged on the hydraulic machine.

The product effect of the utility model is as follows: the spiral spray pipe is connected with the liquid inlet pipe, the spiral spray pipe can spray materials through spray holes on the spiral spray pipe after methanol is discharged into the spiral spray pipe, mother liquor replacement is carried out, the spiral spray pipe is made of stainless steel, rust and corrosion are prevented, and gas is introduced into the gas inlet pipe to filter-press the washed materials; the materials can fully move from bottom to top when the stirring paddles stir, so that the washing is more complete; the three-way valve A on the liquid inlet pipe controls the amount of inflow liquid and prevents the liquid from being excessive; methanol of the leaching material can be circulated to crystallization of the next batch material through a liquid storage device, and the discharged liquid is filtered by a filter disc; the utility model can improve the production efficiency and save the cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic diagram of a spiral spray pipe structure of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made in detail and with reference to the accompanying drawings, wherein it is to be understood that the embodiments are merely some, but not all embodiments of the utility model.

Embodiment one:

as shown in fig. 1 and 2, the utility model comprises a filtering tank body 1, a feeding pipe 2 arranged at the top of the filtering tank body 1, a liquid inlet pipe 3 arranged at the top of the filtering tank body 1 and positioned at one side of the feeding pipe 2, a spiral spray pipe 4 positioned in the inner cavity of the filtering tank body 1 and connected with the liquid inlet pipe 3, a stirring device arranged in the filtering tank body 1, a filter disc 5 arranged on the bottom wall of the filtering tank body 1, a liquid outlet pipe 6 arranged at the bottom of the filtering tank body 1 and a discharge hole 19 arranged at one side of the bottom of the filtering tank body 1; the filter disc 5 is arranged above a liquid outlet of the liquid outlet pipe 6; a liquid storage device is arranged between the liquid outlet pipe 6 and the liquid inlet pipe 3, an air inlet pipe 15 which is communicated with the inner cavity of the tank body 1 and used for carrying out pressure filtration on the washed materials is arranged at the top of the tank body, the pressure filtration is the conventional operation in the field, the details are not repeated here, a jacket 16 used for heating is arranged on the inner wall of the tank body 1, and a heating medium such as water and the like is filled in the jacket 16; the inlet of the liquid inlet pipe 3 is communicated with the methanol storage tank 11; spray holes 7 are uniformly formed in the spiral spray pipe 4.

The stirring device comprises a stirring motor 8 fixedly arranged at the top of a filtering tank body 1, a stirring rod 9 positioned in the inner cavity of the filtering tank body 1 and fixedly arranged on a transmission shaft of the stirring motor 8, and a stirring paddle 10 fixedly arranged at the bottom of the stirring rod 9, wherein materials are discharged from a discharge hole 19 through the stirring paddle 10.

The liquid storage device comprises a liquid storage tank 12 communicated with a liquid inlet pipe 3 through a pipeline, a three-way valve B13 arranged on a liquid outlet pipe 6 and a liquid storage pipe 14 vertically arranged on the top outlet of the three-way valve B13; the liquid outlet end at the top of the liquid storage pipe 14 is connected with the liquid inlet of the liquid storage tank 12; a three-way valve A18 is arranged between the liquid inlet pipe 3, the pipeline of the liquid storage tank 12 and the spiral spray pipe 4.

Embodiment two:

as shown in figure 1, the embodiment is a further improvement based on the first embodiment, the utility model is characterized in that a hydraulic press 17 connected with a stirring rod 9 is arranged at the top of a tank body 1, the stirring rod 9 is lifted to drive a stirring paddle 10 to move up and down to stir materials, and a stirring motor 8 is arranged on the hydraulic press 17.

The working flow is as follows: firstly, a solid-liquid mixture of 4,4' -diaminodiphenyl ether is fed into a filtering tank body 1 through a feed inlet 2, liquid, namely methanol, enters a kettle through a liquid inlet pipe 3 through a spiral spray pipe 4 for crystallization and washing, and is fully washed through stirring of a stirring paddle 16 and a screw propeller 8; after washing, liquid is discharged, the hydraulic press 17 drives the stirring rod 9 and the stirring paddle 10 to rise, gas is discharged from the gas inlet pipe 15 for filter pressing, methanol is discharged through the spiral spray pipe 4 connected with the liquid inlet pipe 3 for spraying, mother liquor replacement is carried out, the liquid of the leached material, namely the methanol, can be filtered through the filter disc 5, and then enters the liquid storage tank 12 through the liquid outlet pipe 6 for crystallization and washing of the next batch of material.

The spiral spray pipe 4 is connected with the liquid inlet pipe 3, the spiral spray pipe 4 can spray materials through spray holes on the spiral spray pipe 4 after methanol is discharged, mother liquor replacement is carried out, the spiral spray pipe 4 is made of stainless steel, rust and corrosion are prevented, and the air inlet pipe 15 is filled with air to filter-press the washed materials; the materials can fully move from bottom to top when the stirring paddle 10 is used for stirring, so that the washing is more complete; the three-way valve A18 on the liquid inlet pipe 3 controls the inflow liquid amount to prevent the liquid from being excessive; methanol of the leaching material can be circulated to crystallization of the next batch material through a liquid storage device, and the discharged liquid is filtered by a filter disc 5; the utility model can improve the production efficiency and save the cost.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The washing, spraying and filtering device for the 4,4' -dinitrodiphenyl ether is characterized by comprising a filtering tank body (1), a feeding pipe (2) arranged at the top of the filtering tank body (1), a liquid inlet pipe (3) arranged at the top of the filtering tank body (1) and positioned at one side of the feeding pipe (2), a spiral spraying pipe (4) positioned in the inner cavity of the filtering tank body (1) and connected with the liquid inlet pipe (3), a stirring device arranged in the filtering tank body (1), a filter disc (5) arranged on the bottom wall of the filtering tank body (1), a liquid outlet pipe (6) arranged at the bottom of the filtering tank body (1) and a discharge hole (19) arranged at one side of the bottom of the filtering tank body (1); a liquid storage device is arranged between the liquid outlet pipe (6) and the liquid inlet pipe (3), and the inlet of the liquid inlet pipe (3) is communicated with the methanol storage tank (11);

spray holes (7) are uniformly formed in the spiral spray pipe (4).

2. The washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether according to claim 1 is characterized in that the stirring device comprises a stirring motor (8) fixedly arranged at the top of a filtering tank body (1), a stirring rod (9) positioned in the inner cavity of the filtering tank body (1) and fixedly arranged on a transmission shaft of the stirring motor (8), and a stirring paddle (10) fixedly arranged at the bottom of the stirring rod (9), wherein the stirring rod (9) penetrates through a spiral spray pipe (4);

the filter disc (5) is arranged above the liquid outlet of the liquid outlet pipe (6).

3. The washing spray filtration device of 4,4' -dinitrodiphenyl ether according to claim 1, characterized in that the liquid storage device comprises a liquid storage tank (12) communicated with a liquid inlet pipe (3) through a pipeline, a three-way valve B (13) arranged on a liquid outlet pipe (6) and a liquid storage pipe (14) vertically arranged on the top outlet of the three-way valve B (13); the liquid outlet end at the top of the liquid storage pipe (14) is connected with the liquid inlet of the liquid storage tank (12);

a three-way valve A (18) is arranged between the liquid inlet pipe (3), the pipeline of the liquid storage tank (12) and the spiral spray pipe (4).

4. The washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether according to claim 1, which is characterized in that an air inlet pipe (15) which is communicated with the inner cavity of the tank body (1) and is used for carrying out filter pressing on washed materials is arranged at the top of the tank body.

5. The washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether according to claim 1, which is characterized in that a jacket (16) for heating is arranged on the inner wall of the tank body (1).

6. The washing, spraying and filtering device for 4,4' -dinitrodiphenyl ether according to claim 2, which is characterized in that a hydraulic machine (17) connected with a stirring rod (9) is arranged at the top of the tank body (1), and the stirring motor (8) is arranged on the hydraulic machine (17).