Abstract

The exit configurations of CFB strongly influence the bulk density profile and the internal circulation of the bed material, which is called the end effect. This study analyzes the influence of three exit geometries and two narrowed exit geometries on hydrodynamics. Experiments indicate that the exit with the projected roof in CFB may be used as a separator and the projected height has a maximum. Narrowing the bed cross section near the bed exit zone is a simple and effective way to enhance the internal circulation and reduce the circulation of bed material simultaneously.

Keywords:

Circulating fluidized bed, End effect, Exit geometric configuration, internal circulation,

References

Competing interests

The authors have no competing interests.

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Copyright

The authors have no competing interests.