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US 11,142,706 B2Granted
Processes and systems for petrochemical production integrating fluid catalytic cracking and deep hydrogenation of fluid catalytic cracking reaction products
AssigneeSaudi Arabian Oil Company
InventorOmer Refa Koseoglu
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Abstract
A feedstock is processed in an FCC unit to produce at least light olefins, FCC naphtha, light cycle oil and heavy cycle oil. Light cycle oil, and in certain embodiments hydrotreated light cycle oil, is subjected to deep hydrogenation to produce a deeply hydrogenated middle distillate fraction. All or a portion of the deeply hydrogenated middle distillate fraction is used as feed to the stream cracking zone to produce light olefins.
Claims19
A process for petrochemical production comprising:
- providing a feedstock selected from the group consisting of naphtha, diesel or heavy oils;
- subjecting the feedstock to fluid catalytic cracking to produce at least light cycle oil;
- subjecting all or a portion of the light cycle oil to hydrogenation to hydrogenate aromatics contained in the light cycle oil and produce hydrogenated middle distillates, wherein hydrogenation occurs in the presence of an effective quantity of a hydrogenation catalyst containing one or more active metal components selected from Pt, Pd, Re and a combination comprising at least two of Pt, Pd or Re, and the hydrogenation catalyst including a catalyst support comprising non-acidic amorphous alumina and about 0.1-15 wt % of a modified USY zeolite having one or more of Ti, Zr and/or Hf substituting aluminum atoms constituting the zeolite framework thereof;
- and
- subjecting all or a portion of the hydrogenated middle distillates to thermal cracking in a steam cracking complex to obtain light olefins.
2 more elements
A system for petrochemical production comprising:
- a source of feedstock selected from the group consisting of naphtha, diesel or heavy oils;
- a fluid catalytic cracking zone operable to produce at least light cycle oil from the feedstock;
- a fixed-bed hydrogenation zone operable to produce hydrogenated middle distillates from all or a portion of the light cycle oil produced in the fluid catalytic cracking zone, the hydrogenation zone containing an effective quantity of a hydrogenation catalyst, the hydrogenation catalyst
- containing one or more active metal components selected from Pt, Pd, Re and a combination comprising at least two of Pt, Pd or Re, and
- including a catalyst support comprising non-acidic amorphous alumina and about 0.1-15 wt % of a modified USY zeolite having one or more of Ti, Zr and/or Hf substituting aluminum atoms constituting the zeolite framework thereof;
- and
- a steam cracking complex operable to thermally crack all or a portion of the hydrogenated middle distillates for production of light olefins.
4 more elements
Dependencies are inferred from the claim text.