Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.640125
Title: Process synthesis for waste minimisation with emphasis on the synthesis of cleaner and cost effective distillation sequences for azeotropic mixtures
Author: Manan, Zainuddin Abdul
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1998
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Abstract:
1. Reaction-separation interactions: A waste minimisation approach to process design that promotes opportunistic recycling and includes a systematic technique for designing a recycle network in the context of an overall process. 2. Azeotropic separation systems: (a) A novel geometric approach for synthesis of cleaner and cost effective distillation sequences for homogeneous azeotropic mixtures with and without boundary crossing. Important insights include: • a geometric approach for synthesizing and screening the alternative separation sequences which results in a catalogue pairing the RCMs of the ternary systems with their most promising separation sequences: • a novel procedure for entrainer minimisation for azeotropic distillation sequences, and • new evidences linking the type of separation sequence, the azeotropic column feedstage location and the volatility of an entrainer with the separability of homogeneous azeotropic mixtures. These findings conclusively explain the peculiar dependencies of the separability of homogeneous azeotropic mixtures on the reflux ratio and the number of stages. (b) A geometric approach for synthesis of cost effective distillation sequences for heterogeneous azeotropic mixtures which enables the graphical prediction of the absolute minimum number of units, the region and the point of desirable entrainer flowrate, the optimum decanter tie line position, and the distillate composition for the entrainer recovery column. (c) Guidelines for exploiting feed composition flexibility to improve azeotropic separation based on a novel geometric approach. Important insights include: • the significance of the binary, ternary and desirable ternary feed compositions, and a procedure to achieve the desirable ternary feed composition. • the development of a selection catalogue for feed preconcentration based on a novel geometric approach. • the use of mixing and recycling for grassroot design and retrofit.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.640125  DOI: Not available
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