Abstract
A procedure for calculating the relevant concentrations of sulfur dioxide in an MgO−SO2−H2O system and the construction of an equilibrium-operational diagram showing the relation between ctot (the amount of total SO2 per unit mass of solution), ccom (the total concentration of Mg2+ in the solution expressed with SO32- and HSO3- using the corresponding stoichiometric factors), Y (the excess of SO2 over amount necessary to form Mg(HSO3)2 only, per unit mass of solution), pH, pSO2 (the partial pressure of SO2), and the solubility of MgSO3 at different temperatures in the range from 298 to 323 K is described. The procedure uses the Rudzinski method for determining the pH of a complex aqueous solution and Pitzer's ion interaction model to calculate the activity coefficients in the mixture at various temperatures. The calculated concentrations match closely to those obtained by experiment. The design diagram at 323 K is used for graphical representation of the operating lines for absorption of SO2 taking place within an industrial SO2 absorption unit. Stage efficiency and SO2 removal of commercial Venturi units was computed. The number of overall gas-phase mass transfer units for each stage was found to be in the range from 1 to 3.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
