A Determination of Particle Density Distributions Above Fluidized Beds.
Abstract
An experimental apparatus to measure the particle density distribution in the freeboard of an atmospheric fluidized bed was designed and constructed. The density versus height measured by the sampling apparatus gives a similar exponential decrease as previous investigations have found. A particle trajectory model is developed which calculates the height and particle density distributions above the bed surface of an atmospheric fluidized bed. The parameters input to the model are the superficial velocity, initial particle velocity, gas jet velocity and duration, and the particle size distribution of the bed mass. The model was evaluated using the experimental data for jet velocity, duration, and particle size. The predicted slope of the particle density versus height in the freeboard agrees with the experimentally measured slope within 20%. A sensitivity analysis, using the trajectory model, resulted in a determination of the particle distributions in the freeboard of a fluidized bed as affected by varying the input parameters to the trajectory model. The most significant effects were achieved when the jet velocity or duration was altered. (Theses)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1985
- Accession Number
- ADA159010
Entities
People
- G. A. Piper Iii
Organizations
- Massachusetts Institute of Technology