ResearchBib Share Your Research, Maximize Your Social Impacts
Sign for Notice Everyday Sign up >> Login

On the SO2 Problem in Thermal Power Plants. 2.Two-steps chemical absorption modeling

Journal: International Journal of Engineering Research (IJER) (Vol.4, No. 10)

Publication Date:

Authors : ; ; ; ;

Page : 557-561

Keywords : absorption; gas purification; two-phase absorbent method; three-zone column; convection-diffusion model; average concentration model.;

Source : Downloadexternal Find it from : Google Scholarexternal

Abstract

The modeling of the gas absorption in a new column apparatus for waste gases purification from SО2, using twophase absorbent (CaCO3 / H2O suspension) is presented. The process is realized in a three-zone column. In the upper zone a physical absorption in gas-liquid drops system is realized and the big convective transfer in the gas phase leads to a decrease of the mass transfer resistances in this phase. In the middle zone a chemical absorption in liquid-gas bubbles system takes place and the big convective transfer in the liquid phase leads to a decrease of the mass transfer resistances in this phase. The large volume of the liquid in the middle zone causes an increase of the chemical reaction time and as a result a further decrease of the mass transfer resistances in the liquid phases is realized. The third zone is the column tank, where the chemical reaction takes place only.

Last modified: 2015-11-17 13:52:17