Immobilization of vanadia deposited on sorbent materials during treatment of carbo-metallic oils
First Claim
1. A sorbent material wherein the composition of said sorbent comprises kaolin clay, a titania gel in an amount in the range of about 1 to about 8 weight percent of sorbent, and a metal additive sufficient to immobilize vanadium compounds in the presence of an oxygen containing gas at sorbent regeneration temperatures.
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Abstract
A process is disclosed for the treatment of a hydrocarbon oil feed having a significant content of vanadium to provide a higher grade of oil products by contacting the feed under treatment conditions in a treatment zone with sorbent material containing a metal additive to immobilize vanadium compounds. Treatment conditions are such that coke and vanadium are deposited on the sorbent in the treatment zone. Coked sorbent is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke, and regenerated sorbent is recycled to the treatment zone for contact with fresh feed. The metal additive is present on the sorbent in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the sorbent regeneration temperature. A sorbent composition disclosed comprises a kaolin clay containing the metal additive, which may be introduced into the clay during the treatment process or during sorbent manufacture. Metal additives include water soluble inorganic metal salts and hydrocarbon soluble organo-metallic compounds of select metals.
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29 Claims
- 1. A sorbent material wherein the composition of said sorbent comprises kaolin clay, a titania gel in an amount in the range of about 1 to about 8 weight percent of sorbent, and a metal additive sufficient to immobilize vanadium compounds in the presence of an oxygen containing gas at sorbent regeneration temperatures.
- 2. A sorbent wherein the composition of said sorbent comprises a kaolin clay, an alumina gel in an amount in the range of about 1 to about 8 weight percent, and a metal additive in an amount sufficient to immobilize vanadium compounds in the presence of an oxygen containing gas at sorbent regeneration temperatures.
- 3. A composition of matter for use as a sorbent comprising kaolin clay, a zirconia gel in an amount of the range of about 1 to about 8 weight percent, and a metal additive in an amount sufficient to immobilize vanadium compounds in the presence of an oxygen containing gas at sorbent regeneration temperature.
- 4. A composition of matter for use as a sorbent comprised of microspherical particles each containing clay, a titania gel in an amount in the range of about 1 to about 8 weight percent, and a metal additive in an amount sufficient to immobilize vanadium compounds in the presence of an oxygen containing gas at sorbent regeneration temperature.
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5. A sorbent comprised of microspherical particles each containing a metal additive in an amount sufficient to immobilize vanadium compounds in the presence of an oxygen containing gas at sorbent regeneration temperature, microspherical clay, and an alumina gel in an amount in the range of about 1 to about 8 weight percent.
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6. A sorbent comprised of microspherical particles each containing a metal additive, in an amount sufficient to immobilize vanadium compounds in the presence of an oxygen containing gas at sorbent regeneration temperature, kaolin clay, a titania gel or a zirconia gel or a combination of titania gel and zirconia gel with an alumina gel, said gel material comprising about 1 to about 8 weight percent of said sorbent.
Specification