The gas-solid suspension drag on large particles in the transport zone of a circulating fluidized bed
Paper in proceeding, 2021

The effective drag of the gas-solid suspension on large particles representing fuel particles in fluidized beds, has a crucial effect on the mixing of the fuel particles. The suspension drag is therefore an important parameter in CFB reactor modeling, but little is known on its magnitude. This paper presents a method to experimentally determine the suspension drag by measuring the terminal velocity of large particles in the transport zone of a fluidized bed, which is compared with the terminal velocity in the absence of bed material. The drag coefficient of the particles suspended in the gas-solids flow and Reynolds numbers of the fluid flow are presented and compared to the standard drag curve of a single spherical particle. Finally, the effective viscosity of the gas-solid suspension is determined.

Author

Anna Köhler

Chalmers, Space, Earth and Environment, Energy Technology, Energy Technology 3

Jesper Aronsson

Chalmers, Space, Earth and Environment, Energy Technology

David Pallarès

Chalmers, Space, Earth and Environment, Energy Technology

Filip Johnsson

Chalmers, Space, Earth and Environment, Energy Technology

CFB 2021 - Proceedings of the 13th International Conference on Fluidized Bed Technology

148-153

13th International Conference on Fluidized Bed Technology, CFB 2021
Vancouver, Canada,

Driving Forces

Sustainable development

Subject Categories

Energy Engineering

Ocean and River Engineering

Fluid Mechanics and Acoustics

More information

Latest update

8/3/2021 7