Eurecat S.a.

Europeenne De Retraitement De Catalyseurs Eurecat

Other

Ifp Energies Nouvelles

Albemarle Netherlands B.v.

Eurecat Europeenne De Retraitement De Catalysateur S.a.

Franck Labruyere

Pierre Dufresne

Nilanjan Brahma

Sonja Eijsbouts

Frans Lodewijk Plantenga

Pauline Galliou

Christophe Geantet

Jean Darcissac

Michel Lacroix

Leendert Arie Gerritsen

Maxime Meens

Giuseppe Italiano

François Locatelli

Joan Darcissac

Loredana Romano

Cecile Glasson

Ezio Antonino Viglianti

Pierre Dufrense

Francois Locatelli

A process for producing hydrogen sulfide from hydrogen and elemental sulfur, comprising:

Process for producing hydrogen sulfide in a circulating catalytic bed reactor

The invention relates to a process for incorporating sulfur in the porosity of the solid particles of a catalyst for the conversion of hydrocarbons or an adsorbent. This process is carried out off-site in the presence of hydrogen sulfide that is pure or diluted in hydrogen or nitrogen, a process in which said particles are made to rise or fall in a sulfur incorporation zone that comprises at least one vibratory helical coil that is essentially tubular in shape and that comprises at least two turns, whereby said particles are subjected to a temperature profile over the majority of their path in said coil and whereby said particles are brought into contact with at least one fluid on at least one portion of their path.

Process for sulfurization or presulfurization of solid particles of a catalyst or an adsorbent

The present invention concerns a process for 'ex situ' treatment of a hydrogenation catalyst containing nickel prior to use, consisting of carrying out three steps, namely bringing the catalyst into contact with at least one sulphur-containing compound or agent (the step termed selectivation), treating said catalyst with hydrogen at a temperature of more than 250&#xb0; C. (the step termed reduction) and passivation of said catalyst.

Off-site treatment for hydrogenation catalysts

The present invention concerns a process for ex situ oxidizing passivation of hydrocarbon hydroconversion catalysts, in particular for hydrotreatment in their sulphurized states, in which the sulphurized catalyst undergoes two treatments: contact with an oxidizing gas stream, and contact with an organic liquid (for example hydrocarbon) which partially fills its pores.

Passivation of sulphur hydroconversion catalyst

This invention relates to a process of ex-situ oxidizing passivation of catalysts for hydroconversion of hydrocarbons and especially of hydrotreating, in their sulfide state, process in which the sulfurized catalyst is brought into contact with an oxidizing gas flow that can be dry or wet, during heat treatment at more than 50&#xb0; C. This invention, for passivation of sulfide phases, can be equally well implemented for a process that takes place in a fixed bed or a fluidized bed, for example a moving bed.

Oxidizing heat treatment passivation of sulphide hydrotreatment catalyst

The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an organic additive wherein the catalyst composition is first contacted with an organic liquid, followed by the catalyst being contacted with hydrogen and a sulfur-containing compound in the gaseous phase, wherein less than about 40%, preferably less than about 35%, more preferably less than about 25%, most preferably less than about 15%, of the sulfur present in the sulfided catalyst is added with the organic liquid. The process of the present invention makes it possible to use additive-containing catalysts without loss of activity in units which cannot effect gas phase start-up or are required to carry out a pressure test. The organic liquid may be a hydrocarbon with a boiling range of about 150-500&deg; C., preferably gasoline, white spirit, diesel, gas oil, mineral lube oil, or white oil. The step of contacting the catalyst with hydrogen and a sulfur-containing compound may take place in one step at a temperature of about 150-450&deg; C. It may also take place in two steps, with the first step being performed at a temperature which is lower than that of the second step, with the first step being carried out at a temperature of about 100-250&deg; C. and the second step at a temperature of about 150-450&deg; C.

Process for sulfiding an additive-containing catalyst

The present invention concerns a process for sulphurising a hydrocarbon hydrotreatment catalyst in the presence of hydrogen and at least one sulphur-containing compound. The process is characterized in that the catalyst comprises a carbon-containing compound the major portion of which is not leachable deposited in its pores. The invention is of particular application to sulphurization carried out off-site.

Precarbonisation of a hydrotreatment catalyst

The invention relates to a process for the ex-situ presulfuration of a catalyst for the hydroconversion of hydrocarbons in the presence of hydrogen and of at least one sulfurated compound. It is characterized in that the catalyst is also brought into contact with at least one hydrocarbon compound.

Ex-situ presulfuration in the presence of hydrocarbon molecule

Process for passivation of a heterogenous catalyst of refining reactions or hydrocarbon hydroconversion reactions, characterized in that the external surface of the particles of said heterogeneous catalyst is coated with a protective layer that is made of a particularly inert material which can be eliminated in the reaction zone under the conditions of the reaction.

Protection of catalysts by deposition of a protective layer

A process for presulfurizing a hydrocarbon treatment catalyst and/or for preconditioning a catalyst, comprising one or two stages of incorporating sulfur into the pores of a hydrocarbon conversion catalyst conducted off-site in at least one zone that contains a catalyst, preferably in motion, and with either suilirated hydrogen (H.sub.2 S), sulfur, or a sulfur compound capable of evolving nascent suilirated hydrogen.

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Saint Georges les Bains, France

Franck Labruyere