Attainability and minimum energy of multiple-stage cascade membrane Systems

Handle URI:
http://hdl.handle.net/10754/567055
Title:
Attainability and minimum energy of multiple-stage cascade membrane Systems
Authors:
Alshehri, Ali ( 0000-0002-4848-9605 ) ; Lai, Zhiping ( 0000-0001-9555-6009 )
Abstract:
Process design and simulation of multi-stage membrane systems have been widely studied in many gas separation systems. However, general guidelines have not been developed yet for the attainability and the minimum energy consumption of a multi-stage membrane system. Such information is important for conceptual process design and thus it is the topic of this work. Using a well-mixed membrane model, it was determined that the attainability curve of multi-stage systems is defined by the pressure ratio and membrane selectivity. Using the constant recycle ratio scheme, the recycle ratio can shift the attainability behavior between single-stage and multi-stage membrane systems. When the recycle ratio is zero, all of the multi-stage membrane processes will decay to a single-stage membrane process. When the recycle ratio approaches infinity, the required selectivity and pressure ratio reach their absolute minimum values, which have a simple relationship with that of a single-stage membrane process, as follows: View the MathML sourceSn=S1, View the MathML sourceγn=γ1, where n is the number of stages. The minimum energy consumption of a multi-stage membrane process is primarily determined by the membrane selectivity and recycle ratio. A low recycle ratio can significantly reduce the required membrane selectivity without substantial energy penalty. The energy envelope curve can provide a guideline from an energy perspective to determine the minimum required membrane selectivity in membrane process designs to compete with conventional separation processes, such as distillation.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division
Citation:
Attainability and minimum energy of multiple-stage cascade membrane Systems 2015:JMS15923 Journal of Membrane Science
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
12-Aug-2015
DOI:
10.1016/j.memsci.2015.08.020
Type:
Article
ISSN:
03767388
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0376738815301198
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAlshehri, Alien
dc.contributor.authorLai, Zhipingen
dc.date.accessioned2015-08-16T12:38:38Zen
dc.date.available2015-08-16T12:38:38Zen
dc.date.issued2015-08-12en
dc.identifier.citationAttainability and minimum energy of multiple-stage cascade membrane Systems 2015:JMS15923 Journal of Membrane Scienceen
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2015.08.020en
dc.identifier.urihttp://hdl.handle.net/10754/567055en
dc.description.abstractProcess design and simulation of multi-stage membrane systems have been widely studied in many gas separation systems. However, general guidelines have not been developed yet for the attainability and the minimum energy consumption of a multi-stage membrane system. Such information is important for conceptual process design and thus it is the topic of this work. Using a well-mixed membrane model, it was determined that the attainability curve of multi-stage systems is defined by the pressure ratio and membrane selectivity. Using the constant recycle ratio scheme, the recycle ratio can shift the attainability behavior between single-stage and multi-stage membrane systems. When the recycle ratio is zero, all of the multi-stage membrane processes will decay to a single-stage membrane process. When the recycle ratio approaches infinity, the required selectivity and pressure ratio reach their absolute minimum values, which have a simple relationship with that of a single-stage membrane process, as follows: View the MathML sourceSn=S1, View the MathML sourceγn=γ1, where n is the number of stages. The minimum energy consumption of a multi-stage membrane process is primarily determined by the membrane selectivity and recycle ratio. A low recycle ratio can significantly reduce the required membrane selectivity without substantial energy penalty. The energy envelope curve can provide a guideline from an energy perspective to determine the minimum required membrane selectivity in membrane process designs to compete with conventional separation processes, such as distillation.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738815301198en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, 12 August 2015. DOI: 10.1016/j.memsci.2015.08.020en
dc.subjectMulti-stage membraneen
dc.subjectSelectivityen
dc.subjectPressure ratioen
dc.subjectAttainabilityen
dc.subjectMinimum energyen
dc.titleAttainability and minimum energy of multiple-stage cascade membrane Systemsen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAlshehri, Alien
kaust.authorLai, Zhipingen
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