The Timeconstant of Gas -Liquid Contact Perforated Plate Column for Gas and Liquid Flow Change

Abstract

This report discusses how to estimate the time constant of a gas absorption plate column for gas and liquid flow change.
The time constant of the N-th plate is approximately calculated as NT+T₃ in the case of m<1 or large mass-transfer rate compared to liquid rate, where m is the slope of gas-liquid equilibrium, T is hydraulic time constant and T₃ is mass transfer time constant per unit plate.
The estimated time constants agree within ±20% accuracy with experimental responses of five plates in a gas absorption column.