Design and Control of a Fully Heat-Integrated Pressure-Swing Azeotropic Distillation System

2008 ◽  
Vol 47 (8) ◽  
pp. 2681-2695 ◽  
Author(s):  
William L. Luyben
Keyword(s):  
Azeotropic Distillation ◽  
Distillation System ◽  
Pressure Swing ◽  
And Control

scholarly journals Synthesis of Ternary Homogeneous Azeotropic Distillation Sequences: 2. Flowsheet Identification

2013 ◽  
Vol 13 (1) ◽  
pp. 43
Author(s):  
Sutijan Sutijan ◽  
Megan Jobson ◽  
Robin Smith
Keyword(s):  
Classification System ◽  
Ternary Mixture ◽  
Azeotropic Distillation ◽  
Ternary Mixtures ◽  
Boundary Crossing ◽  
New Classification ◽  
Azeotropic Mixtures ◽  
Systematic Methodology ◽  
Pressure Swing ◽  
Pressure Swing Distillation

This paper presents a systematic methodology for flowsheet generation for separating binary azeotropic mixtures using homogeneous azeotropic distillation. A new classification system for ternary mixtures using ‘standard distillation line maps’ defined in Sutijan et al. (2012) is employed. The new characterisation system is able to link candidate entrainers to flowsheet structures which can facilitate the separation. The sequences considered include pressure-swing distillation, two and three-column flowsheets with or without boundary crossing and the use of single and double-feed columns. For a given ternary mixture, suitable flowsheet structures that can facilitate the separation can be automatically identified. The method is illustrated using examples.

A Dynamic Model of a Pressure Swing Oxygen Generation System

1985 ◽  
Vol 107 (2) ◽  
pp. 111-116 ◽  
Author(s):  
J. J. Beaman
Keyword(s):  
Adsorption Process ◽  
Control Synthesis ◽  
Rotary Valve ◽  
Generation System ◽  
Industrial Systems ◽  
Oxygen Generation ◽  
Model Predictions ◽  
Computer Based ◽  
Pressure Swing ◽  
And Control

A full system model for oxygen generation from a pressure swing adsorption process is developed. The system under study has two zeolite packed molecular sieve beds which are cycled with high and low pressure in order to produce oxygen enriched air. These On-Board Oxygen Generation Systems (OBOGS) are to be used for the generation of aircraft crew breathing requirements. These units are much smaller in scale than present industrial systems and are called on to respond to variable demand. These special requirements have led to a reliable computer-based model to simulate the relatively fast transient performance of OBOGS. Besides the two zeolite beds, the system consists of a rotary valve used to cycle the beds, purge orifice, and breathing plenum. The computerized model predictions compare favorably with experiment. The model is presently being used in design and control synthesis studies.

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