Particle surface treatment equipment

Abstract

The invention provides particle surface treatment equipment. A pressure pneumatic conveying system with material circulation is taken as a particle fluidizer which is adopted for performing fluidization and surface treatment to particles. The particle surface treatment equipment comprises a gas feed device which is connected with a material feed device, wherein a first gas inlet and a second solid particle inlet are formed in the material feed device, and the gas feed device is connected with the first gas inlet of the material feed device. The outlet of the material feed device is connected with a conveying pipeline serving as a fluidizing chamber of the fluidization and surface treatment equipment; the conveying pipeline is provided with a spraying device and an atomizing nozzle which are connected with each other; the downstream of the conveying pipeline is connected with a material discharge device; a gas outlet and a solid particle outlet are formed in the material discharge device. The gas feed device is used for supplying the equipment with gas for particle fluidization; the material feed device is used for supplying to-be-treated particles for the equipment and conveying the gas and solid particles into a downstream pipeline. In the fluidizing chamber of the downstream conveying pipe, the particles, atomized components and gas are intensively mixed and fluidized and subjected to surface treatment. The solid particle outlet of the material discharge device and the second solid particle inlet of the material feed device form a passage through a discharge device; the material particles are intensively mixed in a circuiting loop pipeline and are in a fluidized state.

Description

technical field [0001] The invention belongs to the field of chemical industry and medicine, and in particular relates to a particle surface treatment device. Background technique [0002] Air and liquid flow methods are available for particle surface treatment techniques. Due to the late dispersion, filtration and drying of liquid flow treatment, and the complicated process, the surface treatment of particles gradually adopts gas treatment, that is, the particles are suspended in the gas, and the gas reacts with the surface of the particles. The fluidized bed is the most commonly used equipment for the surface treatment of gas particles and is widely used. However, the general fluidized bed has the following problems: First, the particle size is too small, the particles are easy to escape the fluidized chamber with the gas, and the particle treatment time is not easy. Second, the particle size distribution of the feed material is too wide, and the contact time of particles...

AI Technical Summary

Problems solved by technology

The fluidized bed is the most commonly used equipment for the surface treatment of gas particles and is widely used. However, the general fluidized bed has the following problems: First, the particle size is too small, the particles are easy to escape the fluidized chamber with the gas, and the particle treatment time is not easy. Second, the particle size distribution of the feed material is too wide, and the contact time of particles of various particle sizes with the gas in the fluidization chamber is not uniform, resulting in poor particle surface treatment; third, the fluidized bed has strict requirements on particle properties. The fluidization properties of different material particles have different requirements on the fluidized bed. Therefore, it is difficult to grasp the fluidization performance of different material particles in the fluidized bed. Therefore, the universality of particle fluidization of fluidized bed equipment is not high; the fourth , the fluidized bed has restrictions on the industrialization of particle surface treatment. The surface treatment of industrialized material particles requires a large amount and is practical, while the general industrialized particle treatment involves particles of various particle sizes and materials. From the above analysis, it can be seen that the general flow The chemical bed needs improvement in many places

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