CN215028816U

CN215028816U - Oximation device is used in production of 2-pentanone oxime

Info

Publication number: CN215028816U
Application number: CN202120552805.2U
Authority: CN
Inventors: 李鲁祯; 叶茂伟; 张雪佳
Original assignee: Jiangsu Ecoway Science & Technology Co ltd
Current assignee: Jiangsu Aikewei Technology Co ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-12-07
Anticipated expiration: 2031-03-17

Abstract

The utility model discloses an oximation device for producing 2-pentanone oxime, which comprises a reaction kettle, a first feeding part, a second feeding part and a stirring component, wherein the first feeding part, the second feeding part and the stirring component are arranged in the reaction kettle; the first feeding parts comprise a first material distributing box, a first spray head and a first feeding pipe, wherein the first spray head and the first feeding pipe are communicated with the first material distributing box; the second feeding part comprises a support frame fixed in the reaction kettle, a second material distribution box arranged on the support frame, and a second nozzle and a second feeding pipe which are communicated with the second material distribution box; the second spray head is suspended above the two first distributing boxes; the stirring component is arranged at the bottom of the reaction kettle. The method can realize the full mixing of 2-pentanone, ammonia water and hydrogen peroxide, and greatly improves the overall conversion rate.

Description

Oximation device is used in production of 2-pentanone oxime

Technical Field

The utility model relates to the field of chemical industry, especially, relate to an oximation device is used in production of 2-pentanone oxime.

Background

2-pentanone oxime is an important planned intermediate and can be prepared by reacting 2-pentanone, ammonia water and hydrogen peroxide. In the prior art, the 2-pentanone, the ammonia water and the hydrogen peroxide are not thoroughly mixed during preparation, so that the reaction progress is influenced, and the overall conversion rate is low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an oximation device is used in production of 2-pentanone oxime, which can realize the sufficient mixing of 2-pentanone, ammonia water and hydrogen peroxide and greatly improve the overall conversion rate.

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

an oximation device for producing 2-pentanone oxime comprises a reaction kettle, a first feeding part, a second feeding part and a stirring assembly, wherein the first feeding part, the second feeding part and the stirring assembly are arranged in the reaction kettle; the first feeding parts comprise a first material distributing box, a first spray head and a first feeding pipe, wherein the first spray head and the first feeding pipe are communicated with the first material distributing box; the second feeding part comprises a support frame fixed in the reaction kettle, a second material distribution box arranged on the support frame, and a second nozzle and a second feeding pipe which are communicated with the second material distribution box; the second spray head is suspended above the two first distributing boxes; the stirring component is arranged at the bottom of the reaction kettle.

Preferably, the included angle between the first feeding pipe and the kettle wall of the reaction kettle is 60-75 degrees.

Preferably, the first distribution box is of an arc-shaped structure.

Preferably, the diameter of the second partial box is not larger than the maximum distance between the two first partial boxes.

Preferably, the bottom of the reaction kettle is provided with a temperature control pipe.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses during the use, 2-pentanone is through second material loading spare from the top down blowout, and aqueous ammonia and hydrogen peroxide solution are respectively through the blowout of tilt up from the bottom down of first material loading spare, and the first intensive mixing of realization is in the air to the liquid drop form material of opposite direction of operation, falls into the reation kettle bottom after the liquid drop subsides, further mixing reaction under the stirring of stirring. The 2-pentanone, the ammonia water and the hydrogen peroxide are fully mixed in the reaction kettle, and the overall conversion rate is greatly improved.

Drawings

FIG. 1 is a schematic structural view of an oximation device for producing 2-pentanone oxime in a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of the first feeding member in FIG. 1;

FIG. 3 is a cross-sectional view of the first feeding member of FIG. 2;

FIG. 4 is a schematic structural view of the condensing element of FIG. 1;

wherein, 1 is a reaction kettle, 11 is a discharge hole, 12 is an air outlet, 13 is a control valve, 2 is a first feeding part, 21 is a first material distribution box, 22 is a first spray head, 23 is a first feeding pipe, 3 is a second feeding part, 31 is a support frame, 32 is a second feeding pipe, 33 is a second material distribution box, 34 is a second spray head, 4 is a stirring component, 5 is a temperature control pipe, 6 is a condensing part, 60 is an air vent, 61 is a condensing pipe, and 62 is a through groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, in order to provide an oximation device for producing 2-pentanone oxime in the preferred embodiment of the present invention, the oximation device comprises a reaction kettle 1, and a first feeding member 2, a second feeding member 3 and a stirring assembly 4 which are arranged in the reaction kettle 1, wherein a discharge port 11 is formed at the bottom of the reaction kettle 1, an air outlet 12 is formed at the top of the reaction kettle 1, and a control valve 13 is arranged at the discharge port 11 to control the discharge of a final product; the first feeding parts 2 comprise a first material distribution box 21, and a first spray head 22 and a first feeding pipe 23 which are communicated with the first material distribution box 21, the first feeding parts 2 are divided into two groups, the two groups of first feeding parts 2 are correspondingly arranged on two sides of the reaction kettle 1, and the front ends of the two groups of first feeding parts are obliquely and upwards arranged; the second feeding part 3 comprises a support frame 31 fixed in the reaction kettle 1, a second distribution box 33 arranged on the support frame 31, and a second spray head 34 and a second feeding pipe 32 which are communicated with the second distribution box 33; the second spray head 32 is suspended above the two first distribution boxes 21; the stirring component 4 is arranged at the bottom of the reaction kettle 1. The utility model discloses during the use, 2-pentanone is through the blowout from the top down of second material loading spare 3, and aqueous ammonia and hydrogen peroxide solution are respectively through the blowout of tilt up from the bottom of first material loading spare 2, and the first intensive mixing of liquid drop form material of opposite direction of operation is realized aloft, falls into reation kettle 1 bottom after the liquid drop subsides, further mixing reaction under the stirring of stirring 4. The 2-pentanone, the ammonia water and the hydrogen peroxide are fully mixed in the reaction kettle, and the overall conversion rate is greatly improved.

Specifically, the included angle between the first feeding pipe 23 and the kettle wall of the reaction kettle 1 is 60-75 degrees, and the optimal spraying and mixing effect is ensured.

Specifically, referring to fig. 2 and 3, the first material distribution boxes 21 are arc-shaped, two first material distribution boxes 21 form a cavity close to a circle, and 2-pentanone ejected from the second material feeding member 3 finally settles to the bottom of the reaction kettle 1 through the cavity.

Specifically, the diameter of the second distribution box 33 is not larger than the maximum distance between the two first distribution boxes 21, so that the material sprayed from the top and the material at the bottom are in the same area, and the sufficient mixing of the liquid drop charging materials is realized in the area.

Specifically, the bottom of the reaction kettle 1 is provided with a temperature control pipe 5 for controlling the reaction temperature at the bottom of the reaction kettle 1; furthermore, in order to maintain the temperature stability, the temperature control pipe 5 may be covered with a heat insulating layer. Furthermore, in order to visually reflect the temperature conditions in the reaction kettle 1, a temperature sensor is arranged in the reaction kettle 1, and the temperature of the temperature control pipe 5 is adjusted by the temperature sensor, so that the reaction temperature is automatically controlled finally.

Specifically, referring to fig. 4, the oximation device for producing 2-pentanone oxime further includes a condensation member 6 disposed above the second feeding member 3, and the condensation member 6 is composed of two condensation plates and a condensation pipe 61 disposed between the two condensation plates. Because the materials are mixed in a spraying state and the reaction is exothermic, a plurality of materials escape along with steam in the reaction process, the condensing part 6 can condense the escaped steam, and the materials are recycled to the bottom wall of the reaction kettle to participate in the reaction.

Further, the condensation plate is of a frustum-shaped tubular structure, and the middle of the condensation plate is hollowed into a vent hole 60 for gas to pass through after reaction. When gases such as steam at the bottom pass through, the mixed gas is contacted with the condensing plate to realize large-area condensation due to the influence of the conical structure with the lower width and the upper width, so that the condensation effect is improved. A through groove 62 is formed in the joint of the condensation plate and the reaction kettle 1, and the through groove 62 is used for enabling liquid materials to fall back to the bottom of the reaction kettle.

The utility model discloses during the use, 2-pentanone is through the blowout from the top down of second material loading spare 3, and aqueous ammonia and hydrogen peroxide solution are respectively through the blowout of tilt up from the bottom of first material loading spare 2, and the first intensive mixing of liquid drop form material of opposite direction of operation is realized aloft, falls into reation kettle 1 bottom after the liquid drop subsides, further mixing reaction under the stirring of stirring 4. The 2-pentanone, the ammonia water and the hydrogen peroxide are fully mixed in the reaction kettle, and the overall conversion rate is greatly improved.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. An oximation device for producing 2-pentanone oxime is characterized by comprising a reaction kettle, a first feeding piece, a second feeding piece and a stirring assembly, wherein the first feeding piece, the second feeding piece and the stirring assembly are arranged in the reaction kettle; the first feeding parts comprise a first material distributing box, a first spray head and a first feeding pipe, wherein the first spray head and the first feeding pipe are communicated with the first material distributing box; the second feeding part comprises a support frame fixed in the reaction kettle, a second material distribution box arranged on the support frame, and a second nozzle and a second feeding pipe which are communicated with the second material distribution box; the second spray head is suspended above the two first distributing boxes; the stirring component is arranged at the bottom of the reaction kettle.

2. The oximation apparatus for producing 2-pentanone oxime of claim 1, wherein an included angle between the first feeding pipe and the kettle wall of the reaction kettle is 60-75 °.

3. The oximation apparatus for the production of 2-pentanone oxime of claim 1, wherein the first distribution box is of an arc-shaped structure.

4. The oximation apparatus for 2-pentanone oxime production according to claim 1, wherein the diameter of the second fraction box is not greater than the maximum distance between the two first fraction boxes.

5. The oximation apparatus for producing 2-pentanone oxime of claim 1, wherein a temperature control pipe is disposed at the bottom of the reaction vessel.