Microwave semiconductor self-excited oscillation chemical reactor and method thereof

Abstract

The invention provides a microwave semiconductor self-excited oscillation chemical reactor and a method for using the reactor to heat and catalyze material reaction, including a microwave power amplifier, a microwave cavity, and a phase shifter arranged in sequence and forming a closed loop through a microwave cable , Electrically adjustable attenuator, the inside of the microwave cavity is used to place materials and make the microwave act on the materials; the microwave cavity includes: the main body of the microwave cavity, the upper cover of the microwave cavity, the lower cover of the microwave cavity, the lower cover of the microwave cavity and the main activities of the microwave cavity Connection, the lower cover of the microwave cavity is fixedly connected with the moving parts of the mechanical lifting device; the invention simplifies the method of feeding microwave signals of specific power and frequency into the microwave cavity, significantly improves the range of microwave adjustable frequencies, and improves the microwave The working efficiency of the cavity chemical reaction device enables automatic adjustment of power and frequency. Using the present invention can achieve the effect of using different frequencies to heat different materials with constant power or constant temperature and catalyze the reaction of 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...

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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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