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Fluidized Bed Minimum Velocity Calculator

Determines the minimum fluidization velocity for particles in a fluid bed reactor. Use it when designing fluidized bed combustors, catalytic crackers, or dryers to ensure proper bed expansion.

Particle Diameter (μm)

Particle Density (kg/m³)

Fluid Density (kg/m³)

Fluid Dynamic Viscosity (Pa·s)

Bed Voidage at Minimum Fluidization

Particle Sphericity

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Chemical Engineering

Gas Absorption Column Design Calculator

Design a packed gas absorption column by calculating the number of overall gas-phase transfer units (NOG) and total column height needed to achieve a target gas-phase separation. Used in scrubber design for air pollution control and chemical processing.

Inlet Gas Concentration (Y₁) (mole fraction)

Outlet Gas Concentration (Y₂) (mole fraction)

Henry's Law Constant (atm·L/mol)

Liquid to Gas Ratio (L/G)

Height of Transfer Unit (HOG) (ft)

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Key differences

	Fluidized Bed Minimum Velocity Calculator	Gas Absorption Column Design Calculator
Category	Chemical Engineering	Chemical Engineering
Inputs required	6	5
Result	Minimum Fluidization Velocity (m/s)	Required Column Height (ft)
What it does	Determines the minimum fluidization velocity for particles in a fluid bed reactor. Use it when designing fluidized bed combustors, catalytic crackers, or dryers to ensure proper bed expansion.	Design a packed gas absorption column by calculating the number of overall gas-phase transfer units (NOG) and total column height needed to achieve a target gas-phase separation. Used in scrubber design for air pollution control and chemical processing.