Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Institute Francais Du Petrole

Axens

Cecile Plain

Frederic Morel

Helene Leroy

Christophe Halais

Eric Benazzi

Christophe Gueret

Pierre Marion

Jerome Bonnardot

Olivier Martin

Christophe Boyer

Frederic Bazer-Bachi

Jan Verstraete

Mathieu Digne

Isabelle Guibard

Nicolas Marchal

Process for hydrotreating a heavy hydrocarbon fraction using a system of switchable fixed bed guard zones each containing at least one catalyst bed including at least one step during which the flow of feed supplied to the first guard zone brought into contact with the feed is partly displaced to the next guard zone downstream, preferably progressively.

Process for hydrotreating heavy hydrocarbon feeds with switchable reactors including at least one step of progressive switching

The invention relates to a process and installation for treating heavy petroleum feedstocks for producing a gas oil fraction that has a sulfur content of less than 50 ppm and most often 10 ppm that includes the following stages: a) mild hydrocracking in a fixed catalyst bed, b) separation from hydrogen sulfide of a distillate fraction that includes a gas oil fraction and a heavier fraction than the gas oil, c) hydrotreatment (including desulfurization) of said distillate fraction, and d) separation of a gas oil fraction with less than 50 ppm of sulfur. Advantageously, the heavy fraction is sent into catalytic cracking. The process preferably operates with make-up hydrogen that is brought to stage c), and very advantageously all of the make-up hydrogen of the process in introduced in stage c).

Process for converting heavy petroleum fractions for producing a catalytic cracking feedstock and middle distillates with a low sulfur content

The invention relates to a process for treating heavy petroleum feedstocks for producing a gas oil fraction that has a sulfur content of less than 50 ppm and most often 10 ppm that includes the following stages: a) ebulliated-bed catalytic hydrocracking, b) separation from hydrogen sulfide of a distillate fraction that includes a gas oil fraction and a heavier fraction than the gas oil, c) hydrotreatment of said distillate fraction, and d) separation of a gas oil fraction with less than 50 ppm of sulfur. Make-up hydrogen, preferably all make-up hydrogen, is to stage c). Advantageously, the heavier fraction from step (b) is subjected to catalytic cracking. The invention also relates to an installation that can be used for implementing this process.

Process for converting heavy petroleum fractions including an ebulliated bed for producing middle distillates with a low sulfur content

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Saint Germain-en-Laye, France

Cecile Plain