Endothermic removal of coke deposited on sorbent materials during carbo-metallic oil conversion
A process is disclosed for decarbonization-demetallization of a poor quality residual oil feed boiling above about 650/sup 0/ F. and comprising substantial Conradson carbon components to provide a higher grade of oil feed by contacting the poor quality oil feed with sorbent particle material containing one or more metal additives selected to catalyze the endothermic removal of coke with CO/sub 2/. Sorbent decarbonization conditions are selected so that substantial quantities of carbonaceous material and metals are deposited on the sorbent in the decarbonizing zone. Sorbent material with metals and hydrocarbonaceous deposits is regenerated in the presence of an oxygen and carbon dioxide containing gas streams in separate sorbent regeneration zones at a temperature sufficiently elevated to remove residual coke to a desired low level. Regenerated sorbent particle material at an elevated temperature below about 1500/sup 0/ F. is recycled to the poor quality oil feed decarbonizing zone for contact with additional feed. A select metal additive is provided in the sorbent particle material in an amount sufficient to particularly catalyze the endothermic removal of coke in the presence of a carbon dioxide rich gas at a selected sorbent regeneration temperature. A sorbent particle composition suitable for use in the process comprises a kaolin clay containing one or more of the metal additives which may be introduced into the clay during the oil feed decarbonizing process or during sorbent manufacture. Metal additives include water soluble inorganic metal salts and hydrocarbon soluble organo-metallic compounds of a select group of metals.
- Assignee:
- Ashland Oil, Inc.
- Patent Number(s):
- US 4412914
- OSTI ID:
- 5291445
- Resource Relation:
- Patent File Date: Filed date 10 Aug 1981; Other Information: PAT-APPL-291656
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PETROLEUM RESIDUES
DECARBONIZATION
DEMETALLIZATION
CARBON DIOXIDE
CATALYSIS
COKE
DEPOSITS
REGENERATION
SORPTION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ENERGY SOURCES
FOSSIL FUELS
FUELS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
SEPARATION PROCESSES
020400* - Petroleum- Processing