Claims
- 1. A process for catalytic conversion of heavy hydrocarbons having an API gravity at 25.degree. C. of less than about 20 into light hydrocarbons having an API gravity at 25.degree. C. of greater than about 20 and substantially free of vanadium and nickel values which comprises:
- (a) contacting, in a reaction zone, said heavy hydrocarbons having an API gravity at 25.degree. C. of less than about 20 with a liquid comprising water in the presence of an effective amount of a catalytic material consisting essentially of at least one member selected from the group consisting of oxides, sulfides of sulfates of iron, in the absence of externally added hydrogen, at a temperature between about 340.degree. C. and 480.degree. C. and at a pressure between about 1350 kPa and about 15,000 kpa;
- (b) maintaining the reaction zone under said temperature and pressure in the absence of externally added hydrogen, for a time sufficient to produce a residue and a vapor phase comprising said light hydrocarbons, a gaseous product and a liquid comprising water;
- (c) withdrawing the residue and said vapor phase from the reaction zone;
- (d) separating said vapor phase into said gaseous product, said liquid comprising water, and said light hydrocarbons; and
- (e) recovering said light hydrocarbons.
- 2. The process of claim 1 wherein said catalytic material consists essentially of oxides, sulfides and sulfates of iron.
- 3. The process of claim 1 wherein the catalytic material consists essentially of iron oxides.
- 4. The process of claim 1 wherein the catalytic material consists essentially of iron sulfides.
- 5. The process of claim 1 wherein the temperature is between about 400.degree. C. and 450.degree. C. and wherein the pressure is between about 1350 kPa and about 3500 kPa.
- 6. The process of claim 1 wherein in step (a) the liquid comprising water further comprises at least one C.sub.1 -C.sub.4 alcohol.
- 7. The process of claim 1 wherein the light hydrocarbons have a total vanadium and nickel content of less than about 50 ppm.
- 8. The process of claim 1 wherein the light hydrocarbons have a viscosity at 25.degree. C. of less than about 10 cp.
- 9. The process of claim 1 wherein the gaseous product is less than 10 percent by weight of the heavy hydrocarbon stream.
- 10. The process of claim 6 wherein the light hydrocarbons have a total vanadium and nickel content of less than about 30 ppm.
- 11. The process of claim 7 wherein the heavy hydrocarbons have a viscosity at 25.degree. C. of at least 30,000 cp.
- 12. A process for catalytic conversion of heavy hydrocarbons into light hydrocarbons which comprises:
- (a) contacting, in a reaction zone, heavy hydrocarbons having an API gravity at 25.degree. C. of less than about 20 with a liquid comprising water in the presence of an effective amount of a catalytic material comprising at least one member selected from the group consisting of ammonium carbonate and formic acid, in the absence of externally added hydrogen, at a temperature between about 340.degree. C. and 480.degree. C. and at a presure between about 1350 kPa and about 15,000 kPa;
- (b) maintaining the reaction zone under said temperature and pressure in the absence of externally added hydrogen, for a time sufficient to produce a residue and a vapor phase comprising light hydrocarbons having an API gravity at 25.degree. C. of greater than about 20 and substantially free of vanadium and nickel values, gaseous product and a liquid comprising water;
- (c) withdrawing the residue and said vapor phase from the reaction zone;
- (d) separating said vapor phase into said gaseous product, said liquid comprising water, and said light hydrocarbons having an API gravity at 25.degree. C. of greater than about 20 and substantially free of vanadium and nickel values; and
- (e) recovering said light hydrocarbons.
- 13. A process for catalytic conversion of heavy hydrocarbons having an API gravity of 25.degree. C. of less than about 20 derived from crude oils into light hydrocarbons having an API gravity at 25.degree. C. of greater than about 20 and substantially free of vanadium and nickel values, said crude oils selected from the group consisting of tar sand oils, oil shale, heavy petroleum oil, and vacuum residue from petroleum oil, comprising the steps of:
- (a) contacting, in a reaction zone, said heavy hydrocarbons having an API gravity at 25.degree. C. of less than about 20 with a liquid comprising water in the presence of an effective amount of a catalytic material comprising at least one member selected from the group consisting of phenanthrene, ammonium carbonate, and formic acid, in the absence of externally added hydrogen, at a temperature between about 340.degree. C. and 480.degree. C. and at a pressure between about 1350 kPa and about 15,000 kPa;
- (b) maintaining the reaction zone under said temperature and pressure in the absence of externally added hydrogen, for a time sufficient to produce a residue and a vapor phase comprising said light hydrocarbons having an API gravity at 25.degree. C. of greater than about 20 and substantially free of vanadium and nickel values, gaseous product and a liquid compressing water;
- (c) withdrawing the residue and said vapor phase from the reaction zone;
- (d) separating said vapor phase into said gaseous product, said liquid comprising water, and said light hydrocarbons having an API gravity at 25.degree. C. of greater than about 20 and substantially free of vanadium and nickel values; and
- (e) recovering said light hydrocarbons.
Parent Case Info
This application is a continuation of application Ser. No. 565,329, filed Dec. 27, 1983, abandoned.
US Referenced Citations (11)
Continuations (1)
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Number |
Date |
Country |
Parent |
565329 |
Dec 1983 |
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