Axens

Jacinthe Frecon

Jerome Bonnardot

Thibault Sauge

Roberto Gonzalez Llamazares

Frederic Morel

Odile Lajeunesse

Jerome Pigourier

Nicolas Lambert

Jérôme Pigourier

Delphine Le Bars

Hong Duc Nguyen

Marion Guillevic

Virginie Gobert

The invention relates to a process for converting a feedstock comprising pyrolysis oil and a heavy hydrocarbon-based feedstock, with:

Process for converting a feedstock containing pyrolysis oil

The present invention relates to a device and a process for hydroconversion or hydrotreatment of a hydrocarbon feedstock, comprising in particular a single coil-wound heat exchanger (S-), said coil-wound exchanger being a single-pass heat exchanger formed by a vertical chamber in which one or more bundles of tubes are helically wound around a central core, as numerous superposed layers, for: preheating a hydrocarbon feedstock/hydrogen stream mixture to a reactor inlet furnace (F-) of a hydrotreatment or hydroconversion reaction section (R-), and cooling the reaction effluent from the hydrotreatment or hydroconversion reaction section (R-). The present invention also relates to a use of a coil-wound heat exchanger (S-) in a process for hydroconversion or hydrotreatment of a hydrocarbon feedstock.

Coil-wound heat exchanger for hydrotreatment or hydroconversion

The invention concerns a process and a facility for reducing the concentration of heavy polycyclic aromatic compounds (HPNA) in the recycle loop of hydrocracking units, which comprises a fractionation column. In accordance with this process, a portion of the stream present at the level of at least one plate located between the plate for supplying hydrocracked effluent and the plate for withdrawing the distillate fraction which is the heaviest is withdrawn from the fractionation column and at least a portion of said withdrawn stream is recycled to the column directly or after optional liquid separation, and optionally a portion of said withdrawn stream is recycled to the hydrocracking step directly or after optional gas separation.

Method and device for reducing heavy polycyclic aromatic compounds in hydrocracking units

An installation and a process which jointly implement compression of acid gases from a hydroconversion or hydrotreatment unit and gaseous effluents from a catalytic cracking unit.

Installation and process for jointly implementing compression of the acid gases from the hydroconversion or hydrotreatment unit and that of the gaseous effluents from the catalytic cracking unit

The invention concerns a process and a facility for reducing the concentration of heavy polycyclic aromatic compounds (HPNA) in the recycle loop of hydrocracking units, which comprises a fractionation column. In accordance with this process, a portion of the stream present at the level of at least one plate (I) which is the supply plate or a plate located between the supply plate and the residue evacuation point, or if stripping gas is injected, between the supply plate and the stripping gas injection point, is withdrawn from the fractionation column. A portion, preferably all, of the withdrawn stream is recycled to the hydrocracking step directly or after optional separation of the gases. The residue is purged in its entirety.

The invention concerns a process for the intense conversion of a heavy hydrocarbon feed, comprising the following steps: a) a first step for ebullated bed hydroconversion; b) a step for separating at least a portion of the hydroconverted liquid effluent obtained from step a); c) a step for hydrocracking at least a portion of the vacuum gas oil fraction obtained from step b); d) a step for fractionating at least a portion of the effluent obtained from step c); e) a step for recycling at least a portion of the unconverted vacuum gas oil fraction obtained from step d) to said first hydroconversion step a).

Process for the intense conversion of residues, maximizing the gas oil yield

The invention concerns a process and a facility for reducing the concentration of heavy polycyclic aromatic compounds (HPNA) in the recycle loop of hydrocracking units, which comprises a fractionation column. In accordance with this process, a stream is withdrawn from the fractionation column at the level of at least one plate located between the supply plate and the plate for withdrawing the heaviest distillate fraction; the stream is stripped in an external stripping step by a stripping gas, in the presence of a portion of the residue. The separated gaseous effluent is recycled to the column, advantageously as a stripping gas, and the liquid fraction is recycled to the hydrocracking step; a residue is purged in the stripping step.

A process for the intense conversion of a heavy hydrocarbon feed, comprising a) ebullated bed hydroconversion of the feed; b) separating at least a portion of hydroconverted liquid effluent obtained from a); c)i) either hydrotreatment of at least a portion of the gas oil fraction and of the vacuum gas oil fraction obtained from b), ii) or hydrocracking at least a portion of gas oil fraction and vacuum gas oil fraction obtained from b); d) fractionation of at least a portion of the effluent obtained from c)i) or c)ii); e) recycling at least a portion of unconverted vacuum gas oil fraction obtained from the fractionation d) to said first hydroconversion a); f) hydrocracking at least a portion of gas oil fraction obtained from fractionation d); g) recycling all or a portion of effluent obtained from f) to the fractionation d).

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Rueil-Malmaison, France

Jacinthe Frecon