Self circulation array pipe reaction device with efficient mixer and reaction method using same

A technology of reaction device and tubular reactor, which is applied in the field of reactors, can solve the problems of easy side reactions, limited volume, small specific surface area, etc., and achieve the effect of being conducive to market promotion, uniform material mixing, and large specific surface area

Pending Publication Date: 2019-01-18
葛沁怡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Tank reactors (reactors) are used to carry out many different reaction processes, but the reactors have the following disadvantages: limited volume, suitable for batch reactions, and often require a combination of multiple tanks; the larger the diameter of the reactor, the more materials in the tank are stirred and mixed Inhomogeneous, poor mixing effect; in different stages of the reaction, the energy generated is different, which is not conducive to operation control; the larger the reactor, the smaller the specific surface area, low heat transfer efficiency, difficult temperature control, especially rapid reaction and severe heat release, etc. The reaction can easily cause safety problems because the heat cannot be removed in time; the material is in the kettle for a long time, which is prone to side reactions; the stirring power system needs maintenance and is difficult to replace
[0004] Microchannel reactors can solve the problem of heat removal in terms of heat transfer. The heat transfer efficiency is 5-100 times that of tank reactors. However, it has problems such as high processing precision, high cost, small flux, and limited applicable reaction types. Cannot be widely promoted

Method used

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  • Self circulation array pipe reaction device with efficient mixer and reaction method using same
  • Self circulation array pipe reaction device with efficient mixer and reaction method using same
  • Self circulation array pipe reaction device with efficient mixer and reaction method using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] One, in the self-circulation tubular reaction device with high-efficiency mixer of the present invention:

[0149] There are 25 tubes, the inner diameter of each tube is 1.5cm, and the length of each tube is 50cm (the total volume of the inner diameter of all tubes is calculated as 0.0022m 3 (about 2.2L), heat exchange area 0.589m 2 );

[0150] Upper and lower heads: inner diameter 19.5cm, height 20cm, (the content volume of the upper and lower heads is calculated to be about 0.0059m 3 )

[0151] The total volume of the above is 0.0081m 3 (about 8.1L).

[0152] 2. First explore the reaction situation in the small test. According to the results of the small test, the time for the material to react completely in the reactor is 65 seconds, that is, the residence time of the reaction solution in the tube is set to 65 seconds, so the reaction flux of the material is Tube volume / residence time, that is, 2.2L / (65s / 60)=2.03L / min in this embodiment, that is, the reaction fl...

Embodiment 2

[0172] The reaction apparatus of embodiment 1 is connected in parallel, according to the reaction method of embodiment 1, consume raw material 7-chloro-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid ethyl ester (200kg), The output and yield of the reaction results are twice that of Example 1, the product purity is 99.1%, and the time is 4.40 hours.

Embodiment 3

[0174] The same as the reaction method of Example 1, the difference is that the tube reactor used in Example 3 is a tube reactor with heat transfer fins; the raw material 7-chloro-6-fluoro-1,4-di Hydrogen-4-oxoquinoline-3-carboxylic acid ethyl ester 100kg, the final product obtained was 108.0kg, the purity was 99.5%, the yield was 98.8%, and it took 4.21h.

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Abstract

The invention relates to a self circulation array pipe reaction device with an efficient mixer and a reaction method using the same. The material mixing problem is solved through the arrangement of anefficient mixer and a circulation pump. The heat transfer problem and the reaction flux problem can be effectively solved in time through installing an array pipe reactor and controlling the circulation quantity. The reaction device provided by the invention has the advantages that the heat transfer effect is good; the material mixing is uniform; the continuous and automatic reaction can be realized. The reaction method using the reaction device provided by the invention has the advantages that the operation is simple; the reaction efficiency is high; the heat transfer effect is good; side reactions are few; the reaction flux is great.

Description

technical field [0001] The invention relates to the field of reactors, in particular to a self-circulating tubular reaction device with a high-efficiency mixer and a reaction method using the same. Background technique [0002] Gas-liquid, liquid-liquid and liquid-solid phase reactions are often encountered in chemical synthesis production, so reaction devices are required. The most widely used type of reaction equipment is the tank reactor. [0003] Tank reactors (reactors) are used to carry out many different reaction processes, but the reactors have the following disadvantages: limited volume, suitable for batch reactions, and often require a combination of multiple tanks; the larger the diameter of the reactor, the more materials in the tank are stirred and mixed Inhomogeneous, poor mixing effect; in different stages of the reaction, the energy generated is different, which is not conducive to operation control; the larger the reactor, the smaller the specific surface ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24B01J19/00B01F5/04
CPCB01J19/0013B01J19/0053B01J19/0073B01J19/2425B01F25/31243
Inventor 葛沁怡
Owner 葛沁怡
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