The Experiment Research Of Hydrodynamics Characteristic In 2-Dimensional Coarse Particle Fluided And Spouted Bed

On the equipment of two dimensional fluidized bed, we were primarily engaged in experimental research on coarse particle dense bubbling fluidized bed. Ask for help from the high speed photographs technique and Bitoel tube created oneself, we studied the varied regulation of bed and bubble's characteristics, Bring out four kinds of mechanics of the bubble growth, that is particle crowded out mechanics, density changed mechanics, bubble coalescence mechanics and permeated mechanics; Giving out the experimental formula of the minimum fluidization veloc^ bubble's rising speed and the volume velocity of the bubble phase the first time by L._.._{, <}sub>0 the experimental parameter, Researched the influence of particle diameter, particle size distribution, static bed heights and superficial gas velocity to the bed expansion ratio; Analyzing the variation of pressure and pressure fluctuation of the fluid bed.On the equipment of 2-D spouted bed: Researched the total flowing behavior of gas and particle phase on the conical part of the spouted bed Researched and analyzed the influence of the variation of particle to the minimum spouting velocity of the conical part and figured out the experimental formula; Analyzed the influence of particle diameter, particle size distribution, static bed heights and superficial gas velocity to the diameter of spouted bed and given out the experimental formula of it by the high speed photographs technique, Analyzing the regulation of the changing spout diameter and the moving particle in spout and annulus; Researched the varied regulation of the axial density of spout area, the particle movement in spout and annulus area and found out the not continuing movement of particle phase and gas phase; Working out the fluidization regime map according to the varied flow regime such as fixed bed, bubbling bed, spouted bed, spout-fluid bed and slugging bed; Similar to the two dimensional fluid bed, we also experimenting the influence of particle diameter, particle size distribution, static bed heights and superficial gas velocity to the spout bed's pressure and pressure fluctuation.We can figured out the new equipment for heated the cement applying of the fluided technique above research.