Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1981-05-13
1983-02-15
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208113, 208157, 208164, C10G 1118
Patent
active
043740197
ABSTRACT:
A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650.degree. F.+ material which is characterized by containing material which will not boil below about 1025.degree. F., a carbon residue on pyrolysis of at least about 1 and a Nickel equivalents of heavy metals content of at least about 4 parts per million. This process comprises flowing the carbo-metallic oil together with particulate cracking catalyst through a progressive flow type reactor having an elongated reaction chamber, which is at least in part vertical or inclined, for a predetermined vapor riser residence time in the range of about 0.5 to about 10 seconds, at a temperature of about 900.degree. to about 1400.degree. F., and under a pressure of about 10 to about 50 pounds per square inch absolute sufficient for causing a conversion per pass in the range of about 50% to about 90% while producing coke in amounts in the range of about 6 to about 14% by weight based on fresh feed, and laying down coke on the catalyst in amounts in the range of about 0.3 to about 3% by weight. The ratio of residence time of catalyst in the reactor to residence time of vapor in the reactor (slippage) is in the range of about 1.2:1 to about 12:1, preferably about 1.5:1 to about 5:1. This extended catalyst residence time results in increased dealkylating and cracking of high-boiling hydrocarbons. The spent, coke-laden catalyst is separated from the stream of hydrocarbons formed by vaporized feed and resultant cracking products and regenerated in one or more regeneration beds in one or more regeneration zones by burning the coke on the spent catalyst with oxygen. The regenerated catalyst is recycled to the reactor and contacted with fresh carbo-metallic oil.
REFERENCES:
patent: 2903416 (1959-09-01), Metrailer
patent: 2904504 (1959-09-01), Rice
patent: 3364136 (1968-01-01), Chen et al.
patent: 3380911 (1968-04-01), Owen
patent: 3392110 (1968-07-01), Payne
patent: 3506568 (1970-04-01), Annesser et al.
patent: 3748251 (1973-07-01), Demmel et al.
patent: 3758403 (1973-09-01), Rosinski et al.
patent: 3764520 (1973-10-01), Kimberlin, Jr. et al.
patent: 3769202 (1973-10-01), Plank et al.
patent: 3804747 (1974-04-01), Kimberlin, Jr. et al.
patent: 3826738 (1974-07-01), Zenz
patent: 3849291 (1974-11-01), Owen
patent: 3856659 (1974-12-01), Owen
patent: 3886060 (1975-05-01), Owen
patent: 3894934 (1975-07-01), Owen et al.
patent: 3925195 (1975-12-01), Scherzer et al.
patent: 3974062 (1976-08-01), Owen et al.
patent: 4032432 (1977-06-01), Owen
patent: 4137152 (1979-01-01), Chester et al.
patent: 4149964 (1979-04-01), Bartholic
patent: 4280898 (1971-07-01), Tatterson et al.
patent: 4287048 (1981-09-01), Gladrow et al.
Shankland & Schmitkons "Determination of Activity and Selectivity of Cracking Catalyst" Proc. API 27 (III) 1947, pp. 57-77.
Hettinger, Jr. William P.
Kovach Stephen M.
Ashland Oil Inc.
Gantz Delbert E.
McCrae Charles A.
Schmitkons G. E.
Willson, Jr. Richard C.
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