Investigation on the incipient fluidization and heat transfer in a centrifugal fluidized bed dryer

Journal Article · Fri Oct 01 04:00:00 EDT 1999 · Drying Technology

DOI:https://doi.org/10.1080/07373939908917655· OSTI ID:20006218

Shi, M H; Hao, Y L; Din, Y Q

Based on the continuum theory, a physical model of gas-solid two phase flow in a centrifugal fluidized bed has been proposed. A set of governing equations to describe the fluidization state are obtained and solved numerically after some simplifying. The quantitative experimental study on the characteristics of the incipient fluidization in the centrifugal fluidized bed is performed to examine the proposed model. Gas-solid two phase heat transfer in CFB during a drying process is also conducted. The influences of bed thickness, particle diameter, physical properties of particle, rotating speed of the bed and the gas superficial velocity on heat transfer characteristics are examined. A correlation that can be used to calculate the heat transfer coefficients in the drying process in CFB is obtained.

• Research Organization: Southeast Univ., Nanjing (CN)
• OSTI ID: 20006218
• Journal Information: Drying Technology, Journal Name: Drying Technology Journal Issue: 9 Vol. 17; ISSN DRTEDQ; ISSN 0737-3937
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CENTRIFUGATION
DRYERS
FLOW MODELS
FLUIDIZATION
FLUIDIZED BEDS
HEAT TRANSFER
PARAMETRIC ANALYSIS
TWO-PHASE FLOW