Premium
Influence of Water and Supercooling on Permeability and Compressibility of Acrylic Acid Crystal Beds
Author(s) -
Hengstermann A.,
Harms S.,
Jansens P.
Publication year - 2010
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.200900477
Subject(s) - compressibility , crystallization , materials science , permeability (electromagnetism) , supercooling , crystal (programming language) , filtration (mathematics) , aqueous solution , thermodynamics , mechanics , composite material , mineralogy , membrane , chemistry , mathematics , computer science , biochemistry , physics , statistics , programming language
The performance of a solid‐liquid separation process is often limited by size distribution and morphology of the crystals. To predict the filtration behavior, a robust and applicable model based only on crystallization process parameters is necessary. Therefore, a model has been successfully developed for the industrial system of aqueous acrylic acid melt to predict compressibility and permeability of a crystal bed. For this purpose, common equations are transferred successfully to nonspherical particles. Chord length distributions (CLDs) obtained from an inline focused beam reflectance measurement (FBRM) probe and crystal aspect ratios have been used in combination to determine the major input parameters for the model. Integration of a complex mathematical restoration of crystal size distribution (CSD) from CLD data by the use of existing models is avoided. Considering acceptable fault tolerances of the model, a simple approach used as a robust industrial application is employed. The adjustment of all required constants used in the permeability model was based on simple filtration tests.