Patent US2644574A successfully refreshed from Google Patents.
Patent US3720601A successfully refreshed from Google Patents.
US3720601A
Expired / Lapsed
US
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Hydrocracking process
Assignee: Mobil Oil AS
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Filing: 1969-07-09
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Granted: 1973-03-13
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Expires: 1989-07-09
Abstract
Abstract Selected nitrogen-containing hydrocarbon fractions are hydrocracked to maximize gasoline production. A fraction is hydrocracked severely in the presence of added hydrogen and a hydrocracking catalyst resistant to organic nitrogen compounds. Naphtha is separated from the resultant product, and the remaining liquid product is then hydrocracked in the presence of a hydrocracking catalyst.
Inventors
- 👤 H Coonradt
- 👤 P Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:00
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G47/20; C10G69/00; C10G69/02; C10G69/08; C10G69/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
174 words
A method for converting a hydrocarbon charge of low API gravity boiling below about 800* F. having combined organic nitrogen compounds in amounts ranging from about 1,000 to 5,000 ppm to form naphtha boiling range product which comprises contacting said nitrogen-containing hydrocarbon charge with a mixed base hydrocracking catalyst comprising an acidic crystalline aluminosilicate cracking component containing substantial amounts of rare earth oxides in combination with an acidic amorphous cracking component having an activity index of about 25 or greater in a weight ratio of from about 20 to 80 parts of one cracking component to the other, said cracking base provided with non-noble metal hydrogenation-dehydrogenation activity selected from the hydrogenation components of Group VIB and Group VIII and effecting said conversion of said hydrocarbon charge with said hydrocracking catalyst under hydrocracking conditions selected to produce naphtha boiling range product at a conversion level restricted to within the range of 20 to about 70 percent by weight whereby the aging rate of the caTalyst is maintained not to exceed about 0.1* F. per day.
Claim 2
Independent Claim
174 words
A method for converting a hydrocarbon charge of low API gravity boiling below about 800* F. having combined organic nitrogen compounds in amounts ranging from about 1,000 to 5,000 ppm to form naphtha boiling range product which comprises contacting said nitrogen-containing hydrocarbon charge with a mixed base hydrocracking catalyst comprising an acidic crystalline aluminosilicate cracking component containing substantial amounts of rare earth oxides in combination with an acidic amorphous cracking component having an activity index of about 25 or greater in a weight ratio of from about 20 to 80 parts of one cracking component to the other, said cracking base provided with non-noble metal hydrogenation-dehydrogenation activity selected from the hydrogenation components of Group VIB and Group VIII and effecting said conversion of said hydrocarbon charge with said hydrocracking catalyst under hydrocracking conditions selected to produce naphtha boiling range product at a conversion level restricted to within the range of 20 to about 70 percent by weight whereby the aging rate of the caTalyst is maintained not to exceed about 0.1* F. per day.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein the conversion per pass to naphtha boiling product is restricted to within the range of about 30 to about 50 percent by weight.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein the catalyst comprises a rare earth exchanged X-type zeolite and a silica-alumina matrix.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein the hydrogenation-dehydrogenation component comprises nickel or cobalt and molybdenum or tungsten.
Claim 6
Dependent Claim
42 words
The method of claim 1 wherein the hydrogenation component is a mixture of nickel and tungsten and the total catalyst composition contains between about 1 and about 20 weight percent of nickel and between about 5 and 40 weight percent of tungsten.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |