CN215540799U

CN215540799U - Quick reaction device of low bubble high dispersibility

Info

Publication number: CN215540799U
Application number: CN202120351694.9U
Authority: CN
Inventors: 刘振华; 陈胜环; 张涌
Original assignee: Guangzhou Flower's Song Fine Chemical Co ltd
Current assignee: Guangzhou Flower's Song Fine Chemical Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2022-01-18
Anticipated expiration: 2031-02-07

Abstract

The utility model relates to a low-foam high-dispersity fast reaction device which comprises a reaction kettle, a raw material tank, a pump, a heat exchanger, a first valve, a second valve, a coil pipe, an annular feeding pipe and a stirrer extending into the reaction kettle, wherein the annular feeding pipe is positioned in the reaction kettle and clings to the inner wall of the reaction kettle, and the annular feeding pipe is provided with a plurality of discharge holes; the raw material tank, the second valve, the pump, the heat exchanger and the annular charging pipe are sequentially connected through pipelines; the reaction kettle, the first valve, the pump, the heat exchanger and the annular charging pipe are sequentially connected through pipelines to form a circulation loop; the coil pipe is wound on the outer wall of the reaction kettle. The utility model adopts modes of external circulation, kettle type stirring, annular feeding and the like, can effectively improve the dispersion performance, and effectively solves the problems of poor single kettle reaction dispersibility, low heat exchange efficiency, easy foaming during high-speed stirring and the like.

Description

Quick reaction device of low bubble high dispersibility

Technical Field

The utility model relates to the technical field of daily chemical synthesis and product compounding, in particular to a low-foam high-dispersity fast reaction device.

Background

In the field of daily chemical synthesis and product compounding, the reaction mode that partial raw materials added in batches can often be related to, the raw materials added in batches usually uses head tank and straight tube filling tube, when the raw materials velocity of flow is too fast, often can cause local concentration to be on the high side, lead to taking place side reactions such as hydrolysis, oxidation, under the unchangeable condition of charging speed, for making its quick dispersion, the mode that traditional single cauldron reaction used is to improve stirring speed, but in the reaction of surfactant participation, simply promote stirring speed and lead to raw materials foamability to increase easily, influence productivity and reaction efficiency, and single cauldron reaction only usually has single heat exchanger, reation kettle jacket or coil pipe, heat exchange efficiency is lower.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a low-foam high-dispersity fast reaction device which can solve the problems of poor dispersity, low heat exchange efficiency and easiness in foaming during high-speed stirring of the existing single kettle reaction.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

a low-foam high-dispersity fast reaction device comprises a reaction kettle, a raw material tank, a pump, a heat exchanger, a first valve, a second valve, a coil pipe, an annular feeding pipe and a stirrer extending into the reaction kettle, wherein the annular feeding pipe is positioned in the reaction kettle and clings to the inner wall of the reaction kettle, and is provided with a plurality of discharge holes; the raw material tank, the second valve, the pump, the heat exchanger and the annular charging pipe are sequentially connected through a pipeline; the reaction kettle, the first valve, the pump, the heat exchanger and the annular charging pipe are sequentially connected through pipelines to form a circulation loop; the coil pipe is wound on the outer wall of the reaction kettle.

Further, the discharge hole is tightly attached to the inner wall of the reaction kettle.

Further, the annular charging tube is provided with a connecting pipe, the connecting pipe is connected with the discharge port, and one end of the discharge port is kept away from the connecting pipe and is tightly attached to the inner wall of the reaction kettle.

Further, the discharge holes are distributed on the annular feeding pipe at equal intervals.

Further, the number of the discharge ports is 4 to 40.

Further, the coil and the heat exchanger are both used for introducing chilled water.

Further, the temperature of the chilled water is-10 ℃ to 0 ℃.

Further, the annular feeding pipe is positioned at the upper part in the reaction kettle.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model adopts the mode of combining external circulation, kettle type stirring and annular feeding, can effectively improve the dispersion performance, improves the heat exchange efficiency by the coil pipe and the heat exchanger, through the design of the annular feeding pipe, the annular feeding pipe is tightly attached to the inner wall of the reaction kettle, so that the raw materials can flow down along the inner wall of the reaction kettle in a circle, because the raw materials are dispersed and flow down slowly along the inner wall of the reaction kettle, the down-flow speed is reduced and the gravitational potential energy is reduced, thereby avoiding the problems of over-high flow speed and high local concentration when the raw materials are directly injected into the materials, further avoiding side reactions such as hydrolysis, oxidation and the like, reducing the generation of bubbles in the charging process, further fully mixing the materials in a mode of combining kettle type stirring with external circulation, and because of extrinsic cycle, can reduce the temperature of material in the reation kettle well, further avoid taking place side reaction such as hydrolysis, oxidation. Thereby effectively solving the problems of poor reaction dispersibility, low heat exchange efficiency, easy foaming during high-speed stirring and the like of a single kettle.

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

Drawings

FIG. 1 is a schematic structural diagram of a low-foam high-dispersibility rapid reaction apparatus according to the present invention.

In the figure: 1. a reaction kettle; 2. a raw material tank; 3. a pump; 4. a heat exchanger; 5. a first valve; 6. a second valve; 7. a coil pipe; 8. an annular feed tube; 9. a stirrer; 10. and (4) a discharge port.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

As shown in fig. 1, the low-foam high-dispersibility rapid reaction device provided by the utility model comprises a reaction kettle 1, a raw material tank 2, a pump 3, a heat exchanger 4, a first valve 5, a second valve 6, a coil 7, an annular feeding pipe 8 and a stirrer 9 extending into the reaction kettle, wherein the annular feeding pipe 8 is positioned in the reaction kettle 1 and clings to the inner wall of the reaction kettle 1, and the annular feeding pipe 8 is provided with a plurality of discharge holes 10; the raw material tank 2, the second valve 6, the pump 3, the heat exchanger 4 and the annular charging pipe 8 are sequentially connected through pipelines; the reaction kettle 1, the first valve 5, the pump 3, the heat exchanger 4 and the annular charging pipe 8 are connected in sequence through pipelines to form a circulation loop; the coil 7 is wound on the outer wall of the reaction kettle 1.

In a preferred embodiment, the discharge port 10 is tightly attached to the inner wall of the reaction vessel 1, so that the raw material flows down slowly along the inner wall of the reaction vessel 1, the down-flow speed is reduced, and the gravitational potential energy is reduced.

In a preferred embodiment, the annular feeding pipe 8 is provided with a connecting pipe, the connecting pipe is connected with the discharge port 10, one end of the connecting pipe far away from the discharge port 10 is tightly attached to the inner wall of the reaction kettle 1, and the raw materials flow down slowly along the inner wall of the reaction kettle 1, so that the dispersing performance is improved.

In a preferred embodiment, the discharge ports 10 are distributed in the annular feeding pipe 8 at equal intervals, so that the mixing uniformity can be improved.

In a preferred embodiment, the number of the discharge ports 10 is 4 to 40, and the problem of local high concentration can be avoided.

In a preferred embodiment, both the coil 7 and the heat exchanger 4 are used for introducing chilled water, thereby improving heat exchange efficiency.

As a preferred embodiment, the temperature of the frozen water is-10 ℃ to 0 ℃, and then the temperature of the materials is reduced to 10 ℃ to 15 ℃, so that the reaction efficiency is improved.

In a preferred embodiment, the annular feeding pipe 8 is located at the upper part of the reaction vessel 1, thereby increasing the distance of the raw materials flowing down along the inner wall of the reaction vessel 1 and promoting the thorough mixing of the materials.

The implementation of the utility model comprises the following steps:

taking the reaction of sodium lauroyl sarcosinate as an example, the reaction efficiency can be effectively improved and the generation of bubbles can be greatly reduced by the method. The time of the whole reaction process is shortened by 30 percent compared with that of single kettle reaction, the efficiency is improved by about 43 percent, and the product quality is stable:

1. adding sodium sarcosinate and deionized water into a reaction kettle 1, closing a first valve 5, opening a stirrer 9 of the reaction kettle 1, adding lauroyl chloride into a raw material tank 2, introducing chilled water into a coil 7 and a heat exchanger 4 of the reaction kettle because the reaction needs to be carried out at a low temperature, and reducing the temperature of materials in the reaction kettle 1 to 10-15 ℃;

2. opening a second valve 6 and a pump 3, and dropping lauroyl chloride into the bed charge along the inner wall of the reaction kettle 1 at a constant speed through an annular feeding pipe 8, wherein the added raw materials are dispersed and flow down along the inner wall, so that the dispersibility is high and the foaming is less;

3. after the lauroyl chloride in the raw material tank 2 is added, the second valve 6 is closed, the first valve 5 is opened, the external circulation process is increased, and the reaction efficiency is improved.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a quick reaction unit of low bubble high dispersibility, includes reation kettle, head tank, pump, heat exchanger, first valve, second valve, coil pipe, annular filling tube and extends to the agitator in the reation kettle, its characterized in that: the annular feeding pipe is positioned in the reaction kettle and is tightly attached to the inner wall of the reaction kettle, and the annular feeding pipe is provided with a plurality of discharge holes; the raw material tank, the second valve, the pump, the heat exchanger and the annular charging pipe are sequentially connected through a pipeline; the reaction kettle, the first valve, the pump, the heat exchanger and the annular charging pipe are sequentially connected through pipelines to form a circulation loop; the coil pipe is wound on the outer wall of the reaction kettle.

2. The low-foam high-dispersibility rapid reaction device according to claim 1, wherein: the discharge port is tightly attached to the inner wall of the reaction kettle.

3. The low-foam high-dispersibility rapid reaction device according to claim 1, wherein: the annular charging tube is provided with a connecting pipe, the connecting pipe is connected with the discharge port, and the connecting pipe is kept away from one end of the discharge port is tightly attached to the inner wall of the reaction kettle.

4. The low-foam high-dispersibility rapid reaction device according to claim 1, wherein: the discharge ports are distributed in the annular feeding pipe in an equidistant mode.

5. The low-foam high-dispersibility rapid reaction device according to any of claims 2 to 4, wherein: the number of the discharge ports is 4 to 40.

6. The low-foam high-dispersibility rapid reaction device according to claim 1, wherein: the coil and the heat exchanger are both used for introducing chilled water.

7. The low-foam high-dispersibility rapid reaction device according to claim 6, wherein: the temperature of the chilled water is-10 ℃ to 0 ℃.

8. The low-foam high-dispersibility rapid reaction device according to claim 1, wherein: the annular charging pipe is positioned at the upper part in the reaction kettle.