C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 65/12 (2006.01) C10G 45/00 (2006.01) C10G 47/10 (2006.01) C10G 49/04 (2006.01) C10G 69/02 (2006.01)
Patent
CA 2372620
The invention relates to a process for the treatment of heavy petroleum feedstocks in order to produce a gas oil fraction having a sulphur content of less than 50 ppm and generally 10 ppm which comprises the following stages: a) mild hydrocracking in a catalyst fixed bed, b) separation of the hydrogen sulphide, of a distillate cut including a gas oil fraction and of a fraction which is heavier than the gas oil, c) hydrotreating of at least a portion of the said distillate, d) separation of a gas oil cut comprising less than 50 ppm of sulphur. Advantageously, the heavy fraction is sent for catalytic cracking. Preferably, the process is carried out with makeup hydrogen introduced in stage c) and very advantageously all the makeup hydrogen for the process is introduced in stage c). The invention also relates to a plant which can be used for implementing this process.
L'invention concerne un procédé de traitement des charges pétrolières lourdes pour produire une coupe gazole ayant une teneur en soufre inférieure à 50 ppm et le plus souvent 10 ppm qui comprend les étapes suivantes : a) hydrocraquage doux en lit fixe de catalyseur, b) séparation du sulfure d'hydrogène, d'une coupe distillat incluant une fraction gazole et d'une fraction plus lourde que le gazole, c) hydrotraitement de ladite coupe distillat, d) séparation d'une coupe gazole à moins de 50 ppm soufre. Avantageusement la fraction lourde est envoyée en craquage catalylique. De préférence, le procédé opère avec de l'hydrogène d'appoint amené au niveau de l'étape c) et très avantageusement tout l'hydrogène d'appoint du procédé est introduit à l'étape c). L'invention concerne également une installation utilisable pour mettre en oeuvre ce procédé.
Benazzi Eric
Bonnardot Jerome
Gueret Christophe
Marion Pierre
Martin Olivier
Institut Francais Du Petrole
Robic
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