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Nucleation, growth, and agglomeration in barium sulfate turbulent precipitation
Author(s) -
Marchisio Daniele L.,
Barresi Antonello A.,
Garbero Mirko
Publication year - 2002
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690480917
Subject(s) - micromixing , nucleation , economies of agglomeration , barium , chemistry , precipitation , barium sulfate , population balance equation , population , thermodynamics , chemical engineering , inorganic chemistry , analytical chemistry (journal) , chromatography , physics , meteorology , organic chemistry , demography , sociology , engineering
In this work barium sulfate precipitation is studied in a tubular reactor in a wide range of operating conditions. The effect of reactant concentrations and barium or sulfate excess on crystal‐size distribution and morphology is investigated. Experimental results show that ion excess has a strong influence and that at high concentration aggregation takes place. Computational fluid dynamics is coupled with the finite‐mode probability density function approach for taking into account both macro‐ and micromixing, whereas the population balance is treated by using the standard moment method. Comparison with experimental data suggests that when micromixing and agglomeration are properly taken into account, the agreement is improved. However, this statement is partially affected by the lack of knowledge in barium sulfate kinetics.