Semicontinuous and automatic microwave denitration device

Abstract

The invention discloses a semicontinuous and automatic microwave denitration device. The device comprises a conveying mechanism of feed liquid, a microwave mechanism, a controlling mechanism of a denitration container and a waste gas treatment mechanism. The conveying mechanism of feed liquid comprises a feed liquid tank. The feed liquid in the tank is extracted by a metering pump and conveyed through a feeding pipe provided with a flowmeter. The microwave mechanism comprises a microwave power supply. The microwave generated by the microwave power supply is transmitted through a waveguide to a resonant cavity. A water load and a circulator are arranged on the waveguide. The opening at the bottom end of the resonant cavity is sealed by a double-sealed door mechanism. The device realizes semicontinuous production and the function of automatically remote operating as well as has almost no exhaust emission. The denitration device vertically moves in and out the resonant cavity, wherein translation structure and lifting structure operate steadily. The resonant cavity with good air tightness is capable of exhausting steam normally so that to ensure no vapour condensation. The denitration product has homogeneous composition, uniform partical and low content of nitrate.

Description

technical field [0001] The invention belongs to a denitration device, in particular to a semi-continuous automatic microwave denitration device. Background technique [0002] Microwave is a clean and efficient new energy source. Microwave heating has the characteristics of uniform heating and high efficiency. It has been used in food drying, organic synthesis, sample processing, and material sintering. Microwave heating equipment has also been developed and promoted. [0003] The microwave heating denitrification device is a device used to heat the nitrate solution to evaporate and concentrate it, and finally denitrate it to generate oxides. At present, some microwave devices used in research are made by modifying household microwave ovens or laboratory microwave ovens, without considering continuous operation, exhaust gas treatment, personnel protection and other issues. Continuous production equipment requires continuous feeding. In order to reduce splashing of droplets d...

AI Technical Summary

Problems solved by technology

Continuous production equipment requires continuous feeding. In order to reduce the droplet splashing during the feeding process, the method of inserting the material guide tube into the container is often used. The widely used microwave equipment adopts the structure of the side door, and there are problems in the denitrification container.

In addition, the airtightness of the side door is often fixed manually by locks, screws, etc. Frequent opening and closing will lead to gas and microwave leakage

A large amount of nitrogen oxide gas will be produced in the process of nitrate denitrification, and radioactive aerosols will also be produced in the denitrification process of uranyl nitrate. The airtightness requirements of the equipment are high. Due to the lack of air convection in the airtight cavity, the steam will condense in the cavity and cannot be discharged, resulting in equipment not functioning properly

Due to the above problems, it is difficult to effectively apply microwave equipment in microwave denitrification production

Images