Hydrodynamic studies on zeolite fluidized beds

Inglezakis, VJ; Stylianou, M; Loizidou, M

dc.contributor.author	Inglezakis, VJ	en
dc.contributor.author	Stylianou, M	en
dc.contributor.author	Loizidou, M	en
dc.date.accessioned	2014-03-01T01:33:36Z
dc.date.available	2014-03-01T01:33:36Z
dc.date.issued	2010	en
dc.identifier.issn	1542-6580	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20485
dc.subject	fluidized bed	en
dc.subject	richardson-Zaki equation	en
dc.subject	sphericity	en
dc.subject	zeolites	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Average relative error	en
dc.subject.other	Bed voidage	en
dc.subject.other	Ergun equation	en
dc.subject.other	Expanded beds	en
dc.subject.other	Experimental data	en
dc.subject.other	Large particles	en
dc.subject.other	Minimum fluidization velocity	en
dc.subject.other	New correlations	en
dc.subject.other	richardson-Zaki equation	en
dc.subject.other	Sphericity values	en
dc.subject.other	Volumetric flow rate	en
dc.subject.other	Zeolite particles	en
dc.subject.other	Fluid dynamics	en
dc.subject.other	Fluidization	en
dc.subject.other	Particle size	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Zeolites	en
dc.subject.other	Fluidized beds	en
dc.title	Hydrodynamic studies on zeolite fluidized beds	en
heal.type	journalArticle	en
heal.identifier.primary	10.2202/1542-6580.2282	en
heal.identifier.secondary	http://dx.doi.org/10.2202/1542-6580.2282	en
heal.identifier.secondary	A126	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	The present study presents systematic experimental data on the fluidization of zeolite particles in water-solid fluidized beds. Four particle size groups, 90-180 μm, 180-250 μm, 250-315 μm and 315-500 μm and 22 different volumetric flow rates were used, corresponding to Rep of 0.012 to 1.452. All particle sizes showed smooth flow rate vs expanded bed height curves. As is proven, the Ergun equation is useful for determining the minimum fluidization velocity for the large particle sizes by using a fixed sphericity value of 0.354. For the fluidized bed regime (us>umf), the Ergun equation fails to represent the data as it results in fluctuating particle sphericity values, while the Richardson-Zaki model seems to correlate the data for the large particle sizes only. A new correlation is presented, connecting bed voidage to Rep for all particle sizes with an average relative error of 2.38±2.49% and the range is 0.02-9%. Copyright © 2010 The Berkeley Electronic Press. All rights reserved.	en
heal.publisher	BERKELEY ELECTRONIC PRESS	en
heal.journalName	International Journal of Chemical Reactor Engineering	en
dc.identifier.doi	10.2202/1542-6580.2282	en
dc.identifier.isi	ISI:000280497700015	en
dc.identifier.volume	8	en