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Chemical reaction apparatus utilizing microwave

A chemical reaction and microwave technology, applied in chemical/physical/physical-chemical stationary reactors, chemical/physical/physical-chemical processes using energy, microwave heating, etc. problem, to achieve the effect of precise control of the reaction temperature

Inactive Publication Date: 2007-04-11
SANKO CHEM CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, these are only at the laboratory stage, and a microwave chemical reaction device with high reaction efficiency and implementation on an industrial scale has not yet been developed at this stage.

Method used

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  • Chemical reaction apparatus utilizing microwave
  • Chemical reaction apparatus utilizing microwave
  • Chemical reaction apparatus utilizing microwave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Fig. 1 is an example of the reaction apparatus of the present invention, and is a conceptual diagram of a microwave chemical reaction apparatus capable of three-stage continuous reaction having a preliminary vessel.

[0096] The composition of this reaction unit comprises:

[0097] A preparatory container (hereinafter referred to as a raw material dissolution tank) (A) for mixing, heating, dissolving or melting the reaction raw materials (hereinafter referred to as the reaction substrate conveniently), and

[0098] Carry out the chemical reaction vessel (hereinafter referred to as the microwave reaction tank conveniently) (B) of the first-stage reaction, and

[0099] Next, the microwave reaction tank (C) that undertakes most of the reactions as the second stage, and

[0100] Further carry out the microwave reaction tank (D) of the third stage of finishing reaction.

[0101] Hereinafter, the preparation of 3,3'-diallyloxy-4,4'-dihydroxydiphenyl sulfone (abbreviated as ...

Embodiment 2

[0133] The microwave reaction tank shown in Figure 5 (with an effective volume of 1.5 liters) was connected to 3 tanks (B, C, D) as shown in Figure 1 to perform continuous reaction.

[0134] Before starting the continuous reaction, perform the following preparations in advance.

[0135] Put a predetermined amount of powdery raw material 4,4'-diallyloxydiphenyl sulfone (AOPS) into the raw material dissolving tank (A) through the raw material supply hole, circulate the heat medium in the shell, and heat the temperature in the container to AOPS is melted at 160°C to 180°C above the melting point of AOPS (145°C). Then continue to stir to replace the gas in the container with nitrogen, and maintain an oxygen-free state. And, at the same time, preheat the temperature of the connection pipe (21) pipeline of the extraction nozzle (5), quantitative pump (6), and microwave reaction tank to the preferred temperature of 160°C to 180°C for liquid delivery, and maintain this temperature. ...

Embodiment 3

[0142] A batch reaction was performed using one microwave reaction tank (B) shown in FIG. 5 connected to the raw material dissolution tank (A).

[0143] Before starting the batch reaction, as in Example 2, AOPS was melted, preheated, and replaced with nitrogen in advance.

[0144] Immediately after the preparation, 1.0 kg of molten raw material AOPS is supplied to the microwave reaction tank (B), and nitrogen gas is introduced into the container to maintain an oxygen-free state. Next, a heat medium (160° C. to 190° C.) is circulated in the casing while microwaves are irradiated. The temperature in the microwave irradiation reaction tank was raised from 160°C to 240°C at a rate of 8°C / min, and from 240°C to 260°C at a rate of 1°C / min., and kept at 260°C for 3 minutes for batch reaction, and the reaction ended Finally, open the take-out valve at the bottom of the reaction tank, take out the reaction solution, take a sample and analyze it by liquid chromatography. The results a...

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Abstract

Disclosed is a microwave chemical reaction apparatus comprising a means for heating a reaction solution, which is capable of irradiating the reaction solution with microwaves while controlling the output power according to the temperature of the reaction solution, and a means for forcibly cooling the reaction solution on the outside. The microwave chemical reaction apparatus is characterized by being capable of precisely controlling the reaction temperature. In this microwave chemical reaction apparatus, the reaction temperature can be controlled precisely, for example, within +-1 1 DEG C of a predetermined temperature, and thus this apparatus can be applied to precise chemical reactions. Since reactions proceed rapidly in such an apparatus, mass production can be achieved by a relatively small-sized reaction apparatus.

Description

technical field [0001] The invention relates to a chemical reaction device using microwaves as a heating source. Background technique [0002] Microwaves are one type of electromagnetic waves. Microwaves range from 0.3 to 30 GHz in frequency and 1 cm to 1 m in wavelength. They have been used in radar and communication equipment until now. Moreover, as seen in household electronic microwave ovens, as cooking utensils, it is widely used, especially in the field of food processing and drying of substances. Furthermore, microwaves are electromagnetic wave energy far weaker than visible light and infrared energy, and have been widely used in the field of chemistry until now mainly for the analysis of chemical substances such as magnetic resonance apparatus (NMR). [0003] Recently, however, there has been a growing trend to perform organic chemical reactions using microwaves. This is a phenomenon in which electromagnetic energy of microwaves is absorbed by a dielectric (a subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/12C07B61/00B01J19/18H05B6/80
CPCB01J19/18H05B6/80B01J2219/1218B01J19/126B01J2219/1284B01J2219/0286B01J2219/1239B01J2219/00094B01J2219/1215B01J2219/0004B01J2219/1293B01J2219/1269B01J19/12C07B61/00
Inventor 堀川荣盐田英和榎田宏隆藤本昌树中村胜则
Owner SANKO CHEM CO LTD
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