Device for cooperatively enhancing fluidization of nanoparticles by centrifugal field and sound field

Abstract

The invention provides a device for cooperatively enhancing the fluidization of nanoparticles by a centrifugal field and a sound field. The device comprises a feeding hopper (1), an annular air inlet chamber (2), a centrifugal fluidized bed body (3), a stepping motor (4), a discharging hopper (5), a bed body supporting frame (6), a cloth bag dust collector (7), a sounder (8), a loudspeaker (9), an air outlet (10), an annular air distribution plate (11), an air inlet (12), an inner discharging hole (13), a sealing gasket (14) and a right-angle transmission gear box (15). According to the device provided by the invention, the fluidization of the nanoparticles is enhanced through the centrifugal field and the sound field, and abnormal fluidization phenomena including channeling, slugging even normal fluidization and the like of the nanoparticles in a fluidized bed can be effectively eliminated; an agglomeration-crushing process of particle agglomeration is enhanced and mixing between the particles is enhanced; the heat and mass transportation capability between the particles and a main body is improved; process application and amplification are easy to realize; the device has strong operation controllability and is stable to operate.

Description

technical field [0001] The invention relates to a device for synergistically enhancing the fluidization of nanoparticles by a centrifugal field and an acoustic field, belonging to the field of fluidization equipment. Background technique [0002] Due to their small particle size and large specific surface area, nanoparticles have a series of excellent properties and are widely used in chemical, electronic, ceramic, biomedical and other fields. Fluidization technology can greatly improve the heat and mass transfer efficiency between particles and powders. The fluidization of nanoparticles plays an important role in many industrial processes and is mainly used in the following aspects: [0003] 1. Nanoparticle mixing and powder transportation: During the preparation of many functional materials, different nanoparticles need to be mixed evenly or evenly dispersed into other materials. Fluidized nanoparticles have good mass transfer And heat transfer rate, can achieve more unif...

AI Technical Summary

Problems solved by technology

For nanoparticles with a small primary particle size, there is strong adhesion between the particles, and the particles adhere to each other and coalesce together, forming a large and dense nanoparticle in the process of synthesis, transportation, storage, etc. Agglomeration, the existence of these large agglomerates affects the fluidization of nanoparticles, making it easy to produce abnormal fluidization phenomena such as channeling, throttling and even dead beds in the ordinary fluidization process, making it difficult to achieve stable fluidization , which greatly reduces the gas-solid contact efficiency, which limits the application of nanoparticle fluidized beds in industry

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