Process for converting heavy oils or petroleum residues to gaseous and distillable hydrocarbons
This process for converting a charge of heavy oils or petroleum residues to gaseous and distillable hydrocarbons comprises the steps of (a) admixing said charge with a first hydrogenated recycle oil obtained in a subsequent step of the process, heating the mixture to 350/sup 0/-450/sup 0/C, admixing it with a reducing gas at a temperature of at least 800/sup 0/C and maintaining a temperature of 530/sup 0/-850/sup 0/C and a pressure of at least 20 bars for 0.1 to 60 seconds (b) admixing the resulting product with a second hydrogenated recycle oil whose temperature is lower than 300/sup 0/C, thereby decreasing the temperature of the resultant mixture to less than 450/sup 0/C, then contacting it with steam-hydrogen stream, thereby vaporizing at least 80% of the liquid to a gaseous phase (c) treating the unvaporized remaining fraction with oxygen and steam to form a reducing gas at a temperature of at least 800/sup 0/C, used at least partly in step (a), (d) hydrogenating the gaseous phase from step (b) and recovering therefrom a light fraction distilling below 250/sup 0/C, recycling at least partly the remaining gaseous phase to step (b) after removal of CO/sub 2/ and H/sub 2/S therefrom and (e) recycling the remaining hydrogenated heavy oil fraction, distilling above 250/sup 0/C, to steps (a) and (b).
- Assignee:
- Institut Francais Du Petrole (France)
- Patent Number(s):
- US 4405442
- OSTI ID:
- 5648544
- Resource Relation:
- Patent Priority Date: Priority date 24 Nov 1981, France; Other Information: PAT-APPL-444268
- Country of Publication:
- United States
- Language:
- English
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