Experimental system and method for droplet-particle collision coagulation test

Abstract

The invention discloses an experimental system and method for a droplet-particle collision coagulation test. The system mainly comprises a particle supply device, a droplet generating device, a particle recycling device, and an image collecting and processing system, the particle supply device realizes the supply of particles at different angles and different speeds, the droplet generating devicerealizes the micro-feeding of droplets and the addition of different heights, the particle recycling device realizes the recycling of falling particles and droplets, and the image collecting and processing system realizes the instantaneous capture and image analysis of particle motion trajectory, droplet deformation and a condensation process after the particles meet the droplets. The experimentalsystem disclosed by the invention has the advantages of convenient operation and low cost, can accurately control various parameters during the collision of the particles and the droplets, accuratelycaptures the droplet-particle collision process, records a deformation and spreading process when the droplets adsorb and capture the particles, and is suitable for dust fall capture related to wetdust fall, the collision condensation research on wet desulfurization during thermal power generation, etc.

Description

technical field [0001] The invention relates to the field of particle fluid mechanics, relates to an experimental device, in particular to an experimental system and method for liquid droplet-particle collision coagulation test. Background technique [0002] With the overall development of social economy and industrial technology, in order to further improve production efficiency and quality, more and more attention has been paid to the research on particle and droplet collision, especially the particle and droplet collision adsorption in the state of free movement of microscopic size. Research on the combination process, such as studying the collision combination of mist droplets and dust particles in spray dust removal to improve dust removal efficiency. The research on solid particles and liquid droplets mainly involves spray dust suppression, wet flotation coal process, spray drying, etc. It is necessary to study the capture process of droplets on particles after solid ...

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Problems solved by technology

[0003] However, most of the existing experimental platforms for droplet-particle collisions focus on droplet-plane collisions. For example, the invention patent CN104019991A discloses a "droplet-solid plate oblique collision test device". Although the deformation of droplet collisions can be observed, But only limited to the collision of the droplet with the fixed plate

However, the experimental platform for the collision between droplets and particles is mostly focused on the collision between free-falling droplets and fixed particles, and the general structure is complex, the cost of implementation is high, and the research accuracy is not high. System and method for liquid droplet impacting spherical surface cryocoating"Although the liquid droplet can collide with the solid particle sphere, the solid particle is in a fixed state and cannot realize the free movement of the solid particle

There are currently few experimental test systems for the collision of particles and droplets freely moving in air

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