The gas-liquid contacting effects on liquid dispersion in pilot scale upflow hydrotreaters

Bellos, GD; Gotsis, KP; Galtier, PA; Papayannakos, NG

dc.contributor.author	Bellos, GD	en
dc.contributor.author	Gotsis, KP	en
dc.contributor.author	Galtier, PA	en
dc.contributor.author	Papayannakos, NG	en
dc.date.accessioned	2014-03-01T01:21:37Z
dc.date.available	2014-03-01T01:21:37Z
dc.date.issued	2004	en
dc.identifier.issn	0009-2509	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16274
dc.subject	Dispersion	en
dc.subject	Dynamic simulation	en
dc.subject	Mass transfer	en
dc.subject	Multiphase flow	en
dc.subject	Packed bed	en
dc.subject	Vaporization	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Evaporation	en
dc.subject.other	Flow of fluids	en
dc.subject.other	Gas oils	en
dc.subject.other	Mass transfer	en
dc.subject.other	Mathematical models	en
dc.subject.other	Toluene	en
dc.subject.other	Gas-liquid contracting effects	en
dc.subject.other	Hydrotreaters	en
dc.subject.other	Upflow reactors	en
dc.subject.other	Dispersions	en
dc.subject.other	dispersion	en
dc.subject.other	gas-liquid two-phase flow	en
dc.subject.other	mass transfer	en
dc.subject.other	multiphase flow	en
dc.subject.other	oil and gas production	en
dc.subject.other	packed bed	en
dc.title	The gas-liquid contacting effects on liquid dispersion in pilot scale upflow hydrotreaters	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ces.2004.01.012	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ces.2004.01.012	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	A model for the estimation of the extent of the non-ideal liquid flow from RTD data at operating conditions in small-scale hydrotreaters has been developed accounting for the gas oil evaporation and gas-liquid mass transfer. Non-ideal flow is described by the axial dispersion model. Gas-liquid phase mass transport and equilibrium are considered by simulating the petroleum gas oil fraction with five pseudocomponents. Liquid holdup and axial dispersion coefficients for an upflow reactor are estimated by fitting the response curves after a step change of the tracer concentration at the inlet of a fixed bed operating at reaction conditions to the model predictions. The results obtained with the developed model are compared with those estimated by a simplified pseudohomogeneous model. It has been found that the model parameters estimated by the developed model are compatible with those determined with a mock up system of toluene and nitrogen at ambient conditions. (C) 2004 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Chemical Engineering Science	en
dc.identifier.doi	10.1016/j.ces.2004.01.012	en
dc.identifier.isi	ISI:000221030800003	en
dc.identifier.volume	59	en
dc.identifier.issue	7	en
dc.identifier.spage	1415	en
dc.identifier.epage	1422	en