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Synthesis of processing system around a crystallizer
Author(s) -
Chang WenChi,
Ng Ka M.
Publication year - 1998
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.690441012
Subject(s) - process engineering , solvent , recrystallization (geology) , effluent , downstream processing , mother liquor , heuristics , unit operation , process (computing) , chemistry , engineering drawing , waste management , chemical engineering , engineering , chromatography , computer science , crystallization , organic chemistry , paleontology , biology , operating system
A systematic procedure is developed to synthesize the processing system upstream and downstream of a crystallizer. In a step‐by‐step manner, the procedure guides the user to generate alternative flow sheets for treating a given crystallizer effluent. It consists of five steps. The required unit operations are determined by comparing the product specifications (production rate, product purity, and others) with the crystallizer effluent characteristics (occlusions, inclusions, crystal size, and others). Secondly, the destinations of the reaction solvent, mother liquor, wash liquid, recrystallization solvent, and drowning‐out solvent are assigned. Third, the solvent recovery system is considered to recover the solvents and unconverted reactants and to remove the impurity from the system. Fourth, alternatives for enhancing process performance are identified. Finally, short‐cut models are used to screen process alternatives. Rules and heuristics are provided for each step, and examples for illustrating this procedure are presented.