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Absorption Column Height Calculator

Determine the packed height of a gas absorption column needed to reduce a contaminant from a known inlet concentration to a target outlet concentration. Useful for designing scrubbers treating SO₂, CO₂, NH₃, and similar gases.

Gas Flow Rate (m³/h)

Inlet Gas Concentration (mol%)

Outlet Gas Concentration (mol%)

Henry's Law Constant (Pa·m³/mol)

Fill in the required fields to see your result.

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

	Absorption Column Height Calculator	Gas Absorption Column Design Calculator
Category	Chemical Engineering	Chemical Engineering
Inputs required	4	5
Result	Required Packing Height (m)	Required Column Height (ft)
What it does	Determine the packed height of a gas absorption column needed to reduce a contaminant from a known inlet concentration to a target outlet concentration. Useful for designing scrubbers treating SO₂, CO₂, NH₃, and similar gases.	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.