Experimental study of sulfur dioxide absorption into carbonate suspensions with sulfites addition

Abstract

ABSTRACT. This paper presents the experimental results obtained by sulfur dioxide chemisorption into carbonate suspension with sulfites addition at different temperatures and concentration of the absorbent suspension. Presence of sulfites in the absorbent suspension has a positive influence on the global rate of the absorption process. The acceleration of SO2 chemisorption process in the absorbent suspension containing MeSO3 -MeCO3 is determined by the higher concentration of ions in the liquid phase resulted from higher solubility of MeSO3 comparative with MeCO3. The addition of MeSO3 at a concentration of 10% in the composition of the absorbent suspension determines a significant decrease of the time required for obtaining a high conversion.

Macrokinetic investigations of dry flue-gas desulfurization process using TGA technique

“…Several different flue gas desulfurization (FGD) technologies have been developed for this aim. This is the main reason why the issue of flue-gas desulfurization has become very topical and is the theme of numerous researches in this field [5][6][7][8][9][10].…”

“…In the last decade, technology of flue gas desulfurization has made considerable progress in terms of efficiency, reliability and those are classified into three main processes: dry, semi-dry and wet [5]. Independently of the classification, most of specialized literature [1][2][3][4][5][6][7][8] agrees on the fact that the wet limestone FGD system is the FGD process most widely used (87%) because of its high desulfurization performance and low operating cost [5]. In dry and/or semi-dry FGD systems, SO2-containing flue gas reacts with an alkaline sorbent typically Ca(OH)2 or CaO.…”

Identification of Mass Transfer Parameters for Rock Salt Dissolution in a Plug Flow System

“…Considering that fixed and fluidized bed reactors are widely used in the industry [11], offering a potential solution for process intensification, they present the most common approaches for the study of mass transfer in solidliquid systems using columns with short or long bed of active particles [12,13]. It could be also applied for the study of rock salt dissolution by using salt particles with well defined geometries or by implying active particles which consist of spherical or cylindrical cores coated with a thin layer of melted rock salt [14,15].…”