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Modeling and Simulation of a Bubbling SO 2 Absorber with Granular Limestone Slurry and an Organic Acid Additive
Author(s) -
Liu S.Y.,
Xiao W.D.
Publication year - 2006
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200600101
Subject(s) - slurry , chemical engineering , chemistry , materials science , waste management , mineralogy , environmental science , composite material , engineering
The absorption of SO 2 into limestone slurry containing suspended reactive particles was performed in a bubble reactor with continuous feeding of both gas and liquid phases at a constant pH and high temperature (50 °C). An absorption model with a reaction plane based on the film model was developed. The effect of limestone particle size, concentration, acetic acid additives, and inlet SO 2 concentration on the concentration distribution of chemical species in the liquid film and SO 2 absorption rate were simulated. Increasing the concentration of limestone slurry, adding acetic acid additives into the system or decreasing the limestone particle size or inlet SO 2 concentration caused the reaction plane in the liquid film to shift towards the gas‐liquid interface. Model and experimental results were compared, and it was shown that the model fits the experimental data well.