Method for Calculating Pressure Losses in an Upward Cocurrent Flow

In an upward cocurrent gas-liquid flow in a vertical tube, the dependence of the pressure gradient on the gas velocity is known to be extremal. At a certain gas velocity w = w₀, the pressure gradient takes the minimal value ϕ = ϕ₀. It is also known that stable modes of upward cocurrent flow, which are of the greatest practical importance for adsorption processes, occur at w ≥ w₀. By analyzing a large body of primary experimental data obtained by various researchers over a wide parameter range, corrections are made to a known relation between the pressure gradient and the gas velocity in a column. An algorithm for calculating the pressure loss is developed.__________Translated from Teoreticheskie Osnovy Khimicheskoi Tekhnologii, Vol. 39, No. 3, 2005, pp. 319–326.Original Russian Text Copyright © 2005 by Novozhilov, Kutepov.