关键词: 流化床, 气泡, 孔隙率, 工业废盐, 流态化

Abstract: Currently,the ways to handle industrial waste salt is single. The treatment has not achieved good results. To solve these problems,a fluidized-bed was used to treat industrial waste salt. A self-made fluidized-bed was used to fluidize industrial waste salt. Gas-solid fluidized bed pressure fluctuation signal was detected. The relations between fluidization number and fluidized bed pressure fluctuations were studied. The effects of temperature on the critical fluidized velocity were described and correlations of critical fluidized velocity and temperature were proposed. Bubbles generated in the process of fluidization were studied,and morphology and size were discussed. A method to study material fluidization effect was introduced. Using improfile function,particles mixing from three-dimensional space was transformed into a function. The degree of back-mixing was described by strength and time. The industrial waste salt bed collapsing process was also described. In conclusion,fluidized-bed can handle industrial waste salt by comparing organics on the surface of waste salt via SEM.

Key words: fluidized-bed, bubble, voidage, industrial waste salt, fluidization