Low pressure equilibrium between H_2S and elkanolamine revisited

摘要

Absorption of H_2S in aqueous alkanolamine solution is of considerable ocmmercial importance.A simple method is presented to determine the equilibrium pressure having very low loading of H_2S,with the help of‘sulfide’ion-selective electrode.By this method H_2S-DEA and H_2S-TEA VLE-data were obtained at different amine concentration and temperatures.A theoretical analysis of equilibrium between H_2S and aqueous alkanolamine solution has been reviewed.A semiempirical model with a correlation parameter,#beta#-factor,is introduced to predict the equilibrium between H_2S and alkanolamines.