Radial pressure profiles in a cold-flow gas-solid vortex reactor

A unique normalized radial pressure profile characterizes the bed of a gas‐solid vortex reactor over a range of particle densities and sizes, solid capacities, and gas flow rates: 950–1240 kg/m3, 1–2 mm, 2 kg to maximum solids capacity, and 0.4–0.8 Nm3/s (corresponding to gas injection velocities of...

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Bibliographic Details
Published in:AIChE journal 2015-12, Vol.61 (12), p.4114-4125
Main Authors: Pantzali, Maria N., Kovacevic, Jelena Z., Heynderickx, Geraldine J., Marin, Guy B., Shtern, Vladimir N.
Format: Article
Language:English
Subjects:
Accounting
Chemical engineers
Chemical reactors
Density
Fluid dynamics
Fluid flow
fluidization
Gas flow
Gas injection
gas-solid vortex reactor
Gases
multiphase flow
Particle size
Particle Technology and Fluidization
Pressure
pressure drop
pressure profile
Reactors
Solid solutions
Vortices
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Summary:A unique normalized radial pressure profile characterizes the bed of a gas‐solid vortex reactor over a range of particle densities and sizes, solid capacities, and gas flow rates: 950–1240 kg/m3, 1–2 mm, 2 kg to maximum solids capacity, and 0.4–0.8 Nm3/s (corresponding to gas injection velocities of 55–110 m/s), respectively. The combined momentum conservation equations of both gas and solid phases predict this pressure profile when accounting for the corresponding measured particle velocities. The pressure profiles for a given type of particles and a given solids loading but for different gas injection velocities merge into a single curve when normalizing the pressures with the pressure value downstream of the bed. The normalized—with respect to the overall pressure drop—pressure profiles for different gas injection velocities in particle‐free flow merge in a unique profile. © 2015 The Authors AIChE Journal published by Wiley Periodicals, Inc. on behalf of American Institute of Chemical Engineers AIChE J, 61: 4114–4125, 2015
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.14912