Refrigeration and microwave irradiation integrated microwave chemical reaction apparatus

Abstract

The present invention relates to a microwave chemical reaction device in the chemical research and the chemical field, in particular to a microwave chemical reaction device for research, pilot test and output magnification of microwave chemical reaction under relatively low temperature. The present invention provides a microwave chemical reaction device with integrated refrigeration and microwave radiation, which comprises a microwave radiating cavity, an embedded microwave reactor, a microwave power, a magnetic control pipe and a refrigerating device; the embedded microwave reactor is arranged in the microwave radiating cavity; the microwave radiating cavity is directly connected with the refrigerating device for continuous refrigeration of the microwave radiating cavity; the microwave power and the magnetic control pipe are connected with the microwave radiating cavity. The present invention can provide high-strength and high-intensity microwave radiation and ensures that the reaction system is under the low temperature or superlow temperature condition while greatly increasing the chemical reaction speed, thus providing full reaction activated energy, increasing the reaction speed and overcoming the damages of high temperature on reactants or target molecule structure, activity and shape.

Description

technical field [0001] The invention relates to a microwave chemical reaction device in the field of basic chemical research and chemical industry, in particular to a microwave chemical reaction device for all microwave chemical reaction research, pilot test and mass production amplification that need to be carried out under relatively low temperature conditions. Background technique [0002] In the traditional thermochemical system, increasing the chemical reaction speed mainly depends on increasing the temperature of the reaction system. However, the thermochemical system that increases the temperature of the reaction system through energy conduction has a positive proportional relationship between temperature and energy. will increase accordingly. And the raising of reaction system temperature, will appear the problem that molecular stability reduces. Therefore, the low temperature is not enough to provide sufficient reaction activation energy, and the reaction speed is ...

AI Technical Summary

Problems solved by technology

However, on the basis of ordinary microwave chemical reactions, microwave irradiation after pre-cooling the materials cannot change the temperature rise and fluctuation of the reaction system under the action of microwaves, and the actual reaction temperature process and microwave irradiation conditions cannot be quantified and reproduced at all. Because the microwave acts on the reaction system at the speed of light, the pre-cooled material instantly returns to the same normal temperature state as the initial state of the ordinary microwave reaction. The subsequent process is equivalent to the ordinary microwave reaction, and the microwave is still used to directly irradiate the reaction mixture. The reaction is carried out in the mode of increasing the temperature of the mixture by microwave power, and the difference between the heating method and the traditional heat conduction heating method has not changed substantially.

[0004] At present, only the CoolMate system of CEM Company of the United States is used for the research of low-temperature microwave chemical reaction conditions. It uses a jacketed reaction tube and uses a dry ice-n-hexane mixture in the jacketed tube to reduce the reaction temperature, but it can only perform normal pressure reactions. Moreover, the maximum volume of the reaction tube is only 7mL, so only a very small amount of reaction research can be carried out, and the cost of controlling the reaction conditions is too high

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