Heat transfer from a grid jet in a large fluidized bed | Zendy

Behie L. A. | Zendy; Bergougnou M. A. | Zendy; Baker C. G. J. | Zendy

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Heat transfer from a grid jet in a large fluidized bed

Author(s) -

Behie L. A.,

Bergougnou M. A.,

Baker C. G. J.

Publication year - 1975

Publication title -

the canadian journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 67

eISSN - 1939-019X

pISSN - 0008-4034

DOI - 10.1002/cjce.5450530104

Subject(s) - nozzle , froude number , fluidized bed , jet (fluid) , heat transfer , reynolds number , materials science , mechanics , thermodynamics , quenching (fluorescence) , cracking , composite material , physics , flow (mathematics) , turbulence , optics , fluorescence

Heat transfer from a vertical grid jet within a 2 ft diameter and 4 ft deep fluidized bed of cracking catalyst was studied. The test nozzle diameter was varied from ¼ to 1 in. and the nozzle velocity from 50 to 250 ft /sec which is within the range of industrial practice. The axial temperature data have been related to a Froude, a Reynolds and a Nozzle number: In (δT/δT o ) = –58.1 Fr −0.562 No 1.08 Re −0.112 A simple jet quenching model yielded heat transfer coefficients between the fluid bed and grid jet which ranged from 300 to 1200 Btu/ft 2 hr. o F.

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