Physical properties of small irregular petroleum coke particles (3.08 mm) have been measured at various stages of combustion in a fluidized bed of sand operating in the range 973-l 173 K. Internal burning took place during the particle heating period even at bed temperatures of 1173 K. However, at t
Burning rates of coke particles in the freeboard above a fluidized bed reactor
✍ Scribed by Johan E. Hustad; Dag Vareide; Otto K. Sønju
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 662 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0010-2180
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📜 SIMILAR VOLUMES
A~traet--Tbe density and flux of particles in the freeboard of a freely bubbling fluidized bed is a function of the size, aspect ratio and frequency of bubbles erupting at the surface of the dense bed. To predict the velocity and amount of material thrown into the freeboard, a previous model for the
Greek symbols AP pressure drop between position 2 and top of bed, N/m2 APf pressure drop for minimum fluidisation, N/m2 AP, overall spouting pressure drop, N/m\* pb bulk density of solids, kg/m3 pr fluid density, kg/m' a true denisty of solids, kg/m'
An experimental and theoretical study was conducted to identify the flow behavior of gas and particulates in the freeboard of a gas-fluidized bed. The axial velocity and turbulence intensity distributions were measured along the centerline and across the freeboard. A laser Doppler velocimeter (LDV)