Performance of ceramic membranes at elevated pressure and temperature: Effect of non-ideal flow conditions in a pilot scale membrane separator

Koukou, MK; Papayannakos, N; Markatos, NC; Bracht, M; Van Veen, HM; Roskam, A

dc.contributor.author	Koukou, MK	en
dc.contributor.author	Papayannakos, N	en
dc.contributor.author	Markatos, NC	en
dc.contributor.author	Bracht, M	en
dc.contributor.author	Van Veen, HM	en
dc.contributor.author	Roskam, A	en
dc.date.accessioned	2014-03-01T01:15:03Z
dc.date.available	2014-03-01T01:15:03Z
dc.date.issued	1999	en
dc.identifier.issn	0376-7388	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13303
dc.subject	Ceramic membranes	en
dc.subject	Microporous and porous membranes	en
dc.subject	Modelling	en
dc.subject	Modules	en
dc.subject	Non-ideal flow	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Ceramic materials	en
dc.subject.other	Computer simulation	en
dc.subject.other	Data reduction	en
dc.subject.other	High pressure effects in solids	en
dc.subject.other	High temperature effects	en
dc.subject.other	Mathematical models	en
dc.subject.other	Mechanical permeability	en
dc.subject.other	Porous materials	en
dc.subject.other	Separation	en
dc.subject.other	Silica	en
dc.subject.other	Ceramic membranes	en
dc.subject.other	Microporous membranes	en
dc.subject.other	Non-ideal flow conditions	en
dc.subject.other	Pilot scale membrane separators	en
dc.subject.other	Permselective membranes	en
dc.subject.other	silicon dioxide	en
dc.subject.other	article	en
dc.subject.other	ceramics	en
dc.subject.other	gas	en
dc.subject.other	mathematical model	en
dc.subject.other	membrane	en
dc.subject.other	membrane permeability	en
dc.subject.other	pressure	en
dc.subject.other	priority journal	en
dc.subject.other	simulation	en
dc.subject.other	temperature	en
dc.title	Performance of ceramic membranes at elevated pressure and temperature: Effect of non-ideal flow conditions in a pilot scale membrane separator	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0376-7388(98)00315-9	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0376-7388(98)00315-9	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	Microporous silica membrane manufacturing technology has been scaled-up and tubes with several hundred cm2 of membrane surface area have been prepared. Practical problems in applying high-temperature ceramic membrane technology, such as sealing and ceramic metal joining, have been solved successfully on pilot scale. Experiments show that membranes developed are capable of selectively separating hydrogen from a gas mixture containing hydrogen at elevated pressures and temperatures. Permselectivity values for H2/CH4 separation are as high as 28.The gas separation performance of membranes is influenced by the flow conditions at both the feed and permeate side of the membrane. Non-ideal flow conditions can decrease the separation efficiency and strongly influence the performance of ceramic membrane separators. By performing high-temperature high-pressure separation experiments and simulation of the non-ideal flow effects around the membrane, the influence of the flow effects is predicted.The operation of the pilot scale membrane separator is simulated by a two-dimensional, one-phase mathematical model which predicts the basic features of the separator from an engineering point of view. A comparison between the experimental data and the modelling results yields the conclusion that the dispersion model predicts much better the membrane separator performance than the simplified model which assumes plug flow on both sides of the membrane separator. Copyright (C) 1999 Elsevier Science B.V.Microporous silica membrane manufacturing technology has been scaled-up and tubes with several hundred cm2 of membrane surface area have been prepared. Practical problems in applying high-temperature ceramic membrane technology, such as sealing and ceramic metal joining, have been solved successfully on pilot scale. Experiments show that membranes developed are capable of selectively separating hydrogen from a gas mixture containing hydrogen at elevated pressures and temperatures. Permselectivity values for H2/CH4 separation are as high as 28. The gas separation performance of membranes is influenced by the flow conditions at both the feed and permeate side of the membrane. Non-ideal flow conditions can decrease the separation efficiency and strongly influence the performance of ceramic membrane separators. By performing high-temperature high-pressure separation experiments and simulation of the non-ideal flow effects around the membrane, the influence of the flow effects is predicted. The operation of the pilot scale membrane separator is simulated by a two-dimensional, one-phase mathematical model which predicts the basic features of the separator from an engineering point of view. A comparison between the experimental data and the modelling results yields the conclusion that the dispersion model predicts much better the membrane separator performance than the simplified model which assumes plug flow on both sides of the membrane separator.	en
heal.publisher	Elsevier Sci B.V., Amsterdam, Netherlands	en
heal.journalName	Journal of Membrane Science	en
dc.identifier.doi	10.1016/S0376-7388(98)00315-9	en
dc.identifier.isi	ISI:000078928200006	en
dc.identifier.volume	155	en
dc.identifier.issue	2	en
dc.identifier.spage	241	en
dc.identifier.epage	259	en