Kinetics of hydrogen consumption during catalytic hydrodesulphurization of a residue in a trickle-bed reactor

Papayannakos, N; Georgiou, G

dc.contributor.author	Papayannakos, N	en
dc.contributor.author	Georgiou, G	en
dc.date.accessioned	2014-03-01T01:39:24Z
dc.date.available	2014-03-01T01:39:24Z
dc.date.issued	1988	en
dc.identifier.issn	00219592	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/22768
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0024023211&partnerID=40&md5=185e2f9e02ae75a2cb7ead6e67ee1316	en
dc.subject.other	HYDROCARBONS - Desulfurization	en
dc.subject.other	PETROLEUM REFINING	en
dc.subject.other	CATALYTIC HYDRODESULPHURIZATION	en
dc.subject.other	EFFECTIVE DIFFUSIVITY	en
dc.subject.other	KINETIC MODEL	en
dc.subject.other	TRICKLE-BED REACTOR	en
dc.subject.other	CHEMICAL REACTIONS	en
dc.subject.other	hydrogen	en
dc.subject.other	petroleum	en
dc.subject.other	air quality control	en
dc.subject.other	catalyst	en
dc.subject.other	desulfurization	en
dc.subject.other	kinetics	en
dc.subject.other	model	en
dc.title	Kinetics of hydrogen consumption during catalytic hydrodesulphurization of a residue in a trickle-bed reactor	en
heal.type	journalArticle	en
heal.publicationDate	1988	en
heal.abstract	A kinetic model for hydrogen consumption during catalytic residue hydrodesulphurization, is presented. The intrinsic reaction rates are described by use of a second-order kinetic equation. The intraparticle diffusional effects are discussed by means of the effective diffusivity. Kinetic experiments were carried out in an isothermal trickle-bed reactor, in which two commerical Co-Mo/Al2O3 catalysts were used in a temperature range of 350-430°C, a liquid hourly space velocity ranging from 0.25 to 3 h-1, and a constant pressure of 50 x 105 Pa. The remaining catalyst activity varied between 1.0 and 0.2. Crushed particles and cylindrical extrudates - for each type of catalyst - were used in experimentation. The atmospheric residue of Greek petroleum deposits in the Aegean Sea served as feedstock. Specific rate constants, activation energies and effective diffusivities were determined. Hydrogen consumption increased as either the remaining activity of the catalyst, the reactor temperature or the catalyst size decreased.A kinetic model for hydrogen consumption during catalytic residue hydrodesulfurization is presented. The intrinsic reaction rates are described by use of a second-order kinetic equation. The intraparticle diffusional effects are discussed by means of the effective diffusivity. Kinetic experiments were carried out in an isothermal trickle-bed reactor, in which two commercial Co-Mo/Al//2O//3 catalysts were used in a temperature range of 350-430 degree C, a liquid hourly space velocity ranging from 0. 25 to 3 h minus 1, and a constant pressure of 50 multiplied by 10**5Pa. The remaining catalyst activity varied between 1. 0 and 0. 2. Crushed particles and cylindrical extrudates - for each type of catalyst - were used in experimentation. The atmospheric residue of Greek petroleum deposits in the Aegean Sea served as feedstock. Specific rate constants, activation energies and effective diffusivities were determined. Hydrogen consumption increased as either the remaining activity of the catalyst, the reactor temperature or the catalyst size decreased.	en
heal.journalName	Journal of Chemical Engineering of Japan	en
dc.identifier.volume	21	en
dc.identifier.issue	3	en
dc.identifier.spage	244	en
dc.identifier.epage	249	en