Microwave semiconductor self-oscillation chemical reactor and method thereof

Abstract

The invention provides a microwave semiconductor self-oscillation chemical reactor and a method for heating and catalyzing reaction of materials by using the reactor. The microwave semiconductor self-oscillation chemical reactor comprises a microwave power amplifier, a microwave cavity, a phase shifter and an electrically controlled attenuator which are arranged in turn and form a closed loop through a microwave cable, wherein materials are placed in the microwave cavity, and microwaves act on the materials; the microwave cavity comprises: a microwave cavity body, a microwave cavity upper cover and a microwave cavity lower cover; the microwave cavity lower cover is movably connected with the microwave cavity body; the microwave cavity lower cover is fixedly connected with a moving part ofa mechanical lifting device. According to the microwave semiconductor self-oscillation chemical reactor provided by the invention, the method of feeding a microwave signal with specific power and frequency into the microwave cavity is simplified, the range of the adjustable frequency of the microwave is remarkably improved, the working efficiency of a microwave cavity chemical reaction device is enhanced, thus automatic adjustment of power and frequency can be realized; the microwave semiconductor self-oscillation chemical reactor can realize an effect of constant-power or constant-temperatureheating of different materials by using different frequencies respectively and catalyzing reaction of the materials.

Description

technical field [0001] The invention belongs to the field of microwaves, and more specifically relates to a microwave feedback type heating and catalytic device system with adjustable frequency and power and constant temperature and a method for heating and catalyzing material reaction. Background technique [0002] Microwave refers to electromagnetic waves with a frequency in the range of 300MHz to 300GHz, which are characterized by short wavelength, strong penetrability, and energy carrying. Microwave heating is different from the traditional non-uniform heating from the outside to the inside. It uses the characteristics of microwaves to make microwaves interact with materials. It can not only heat materials as a whole, but also has fast heating speed, uniform heating, high heating efficiency, and It has the characteristics of selective heating and easy control, and has the characteristics of catalyzing the reaction of materials, and the energy loss is small. It is a clean...

AI Technical Summary

Problems solved by technology

Traditionally, cavities heated by solid-state devices use signal sources, amplifiers and microwave cavities for working heating, but this method will cause the resonant frequency of the microwave cavity to be disturbed after the heating material is placed, and then deviate from the frequency of the signal source, that is, Frequency shift occurs, causing serious microwave energy loss

The existing microwave cavity heating device mainly has the following defects or deficiencies: first, the structural size of the microwave cavity is fixed, which makes the resonant frequency in the cavity fixed, and the operating frequency cannot be changed with specific operating conditions; second, The resonant frequency of the microwave cavity will shift with the material to be heated, and the resonant frequency cannot automatically adjust the signal frequency to be the same as the resonant frequency after the resonant frequency is shifted, thus causing large reflection and power loss, which is not conducive to the material Third, the existing microwave cavity heating device needs to be assisted by additional devices and means to adjust the microwave power fed into the cavity, such as setting the temperature measuring device Detect the temperature of the heated material in the heated material, which will form defects in the heated product, or it is not convenient to place the temperature measuring device

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