From heavy oils to marketable products: IFP proposes new schemes for maximum conversion
- Institut Francais de Petrole, Rueil-Malmaison (France); and others
The conversion of atmospheric or vacuum residues into light distillates (naphtha, diesel oil) is the solution to eliminate the increasing excess of high sulfur heavy fuels. Two general families of processes are used: (1) Processes that utilize thermal cracking, such as visbreaking (VB) or coking (CK), to convert mainly vacuum residues into lighter products. (2) Catalytic cracking processes, such as fluid catalytic cracking (FCC) without hydrogen or hydrocracking (HDC) in the presence of hydrogen, to convert essentially vacuum gas-oils (VGO) into lighter, more valuable materials. Fluid catalytic cracking and hydrocracking processes use catalysts with an acid carrier. Consequently, these catalysts can easily be poisoned through excessive coking or metal deposition. Asphaltenes in feed to FCC or HDC processes polymerize and deposit on the catalyst as coke, inhibiting the catalyst activity. Metals (primarily Ni or V) deposit in the catalyst pore volume, resulting in less surface area available on the catalyst, causing increased catalyst usage and deteriorating product selectivity. To remove the asphaltenes and metals, two feed pretreatment processes can be considered. Solvent deasphalting removes most of the metals and asphaltenes. IFP`s Solvahl process will be described in this paper for solvent deasphalting of residues. Alternatively, IFP`s fixed bed demetallization catalysts used in conjunction with the Hyvahl process can improve feed quality for residue FCC.
- OSTI ID:
- 229593
- Report Number(s):
- CONF-9502114-Vol.2; TRN: 96:000932-0025
- Resource Relation:
- Conference: 6. UNITAR international conference on heavy crude and tar sands on fueling for a clean and safe environment, Houston, TX (United States), 12-17 Feb 1995; Other Information: PBD: [1995]; Related Information: Is Part Of Heavy crude and tar sands -- Fueling for a clean and safe environment. Proceedings: Volume 2; Meyer, R.F. [ed.]; PB: 733 p.
- Country of Publication:
- United States
- Language:
- English
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