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Saturday, November 5, 2011

Circulating fluidized bed design Part Four, Design Procedures



2. Air Distribution Plate
Based on parameters calculated above,
Parameter
Value
Fluidization velocity (m/s)

Minimum fluidization velocity (m/s)

Minimum fluidization height (m)

Particle density (sand)

Mean particle size (micro meter)

Bed porosity
----
Bed zone diameter

Number of tuyer lateral orifices:


Using the program calculate the following
Parameter
Value
Pressure drop in the bed (kPa)

Tuyer orifice diameter (mm)

Pressure drop in the distributer (kPa)

Tuyer internal diameter (mm)

Air velocity for the orifice

Total Number of tuyers

Tuyer height (mm)



3. Designing of high efficiency cyclone
The input data required are,

Parameter
Value
Gas inlet velocity to the cyclone
15-27 (m/s)
Pressure drop (kPa)
< 2.5
Cyclone efficiency (%)
>85

 Next
Circulating fluidized bed design, Part Five, Cyclone parameters

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