US3816296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking process
Assignee: Union Oil Company of California
•
Filing: 1972-11-13
•
Granted: 1974-06-11
•
Expires: 1992-11-13
Abstract
Abstract Midbarrel fuels boiling primarily between about 300* and about 700*F are selectively produced from higher boiling feeds containing less than 10 ppm nitrogen by hydrocracking in the presence of controlled amounts of added nitrogen compounds including ammonia or hydrocarbon amines in amounts corresponding to about 5 to about 100 ppm nitrogen. Furthermore, the relative distribution of midbarrel and lower boiling products can be controlled by controlling the amount of nitrogen compounds added to the hydrocracking zone.
Inventors
- 👤 R Hass
- 👤 C Reeg
- 👤 E Attane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:22
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/12; C10G47/00; C10G47/02; C10G47/10; C10G47/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
The method of claim 1 wherein said hydrocarbons boil above about 700*F and are reacted in the presence of said hydrogen added at a rate of about 2000 to about 15,000 standard cubic feet per barrel of said hydrocarbons at a temperature between about 600* and about 900*F, a pressure of about 500 to about 3,000 psig and a liquid hourly space velocity less than about 15 sufficient to convert at least about 50 percent of said hydrocarbons per pass to products boiling below about 700*F with a selectivity of at least about 60 percent to products boiling between about 300* and about 700*F.
Claim 2
Dependent Claim
85 words
The method of claim 2 wherein said catalyst comprises at least about 5 weight percent of at least one of molybdenum and tungsten sulfides, said refractory oxide comprises a catalytic amount below about 30 weight percent of a crystalline aluminosilicate zeolite, said feed contains less than 10 ppm organonitrogen and is reacted with said hydrogen in the presence of said catalyst under conditions sufficient to convert said hydrocarbons with at least about 60 percent selectivity to midbarrel fuels boiling between about 400* and about 700*F.
Claim 3
Dependent Claim
68 words
The method of claim 1 wherein said refractory oxide contains less than about 10 weight percent of a crystalline zeolite and comprises at least about 50 weight percent amorphous alumina, said hydrogenation component comprises the sulfides of molybdenum, tungsten, nickel or cobalt, and said hydrocarbons reacted with said hydrogen in the presence of said added nitrogen compound contain less than about 100 ppm sulfur as organic sulfur compounds.
Claim 4
Dependent Claim
98 words
The method of claim 1 wherein said hydrocarbons are obtained by reacting a hydrocarbon feed containing hydrocarbons boiling above said end point and more than about 100 ppm nitrogen with added hydrogen under denitrogenation and hydrocracking conditions to convert a portion of said feed to products boiling below said end point and reduce the organonitrogen content of said feed to a level below about 10 ppm, and separating the ammonia produced in the hydroconversion of said organonitrogen compounds from said hydrocarbons thereby producing said hydrocarbons boiling above said end point and containing less than about 10 ppm nitrogen.
Claim 5
Independent Claim
174 words
The method of producing midbarrel fuels boiling above about 300*F and below a predetermined product end point from hydrocarbons boiling above said end point and containing less than about 10 ppm organic nitrogen including the steps of reacting said hydrocarbons with hydrogen added in amounts of at least about 400 standard cubic feet per barrel of said hydrocarbons under hydrocracking conditions including a temperature of at least about 500*F, a pressure of at least about 200 psig and a liquid hourly space velocity below about 15 sufficient to convert at least about 30 volume percent of said hydrocarbons per pass to products boiling below said end point with at least about 50 percent selectivity to said midbarrel fuels, the improvement comprising controlling the selectivity of conversion to said midbarrel fuels and/or said lower boiling hydrocarbons by adding to said hydrocracking zone an amount of a nitrogen containing compound selected from ammonia and hydrocarbon amines containing less than about 15 carbon atoms corresponding to about 5 to about 100 ppm nitrogen based on reactor feed.
Claim 6
Dependent Claim
93 words
The method of claim 6 wherein said nitrogen containing compound is selected from ammonia and alkyl amines containing less than 12 carbon atoms, said hydrocarbons are reacted with said hydrogen added at a rate of about 2000 to about 15,000 standard cubic feet per barrel of said hydrocarbons at a temperature between about 600* and about 900*F and a pressure of about 500 to about 3000 psig, and said catalyst comprises a hydrogenation active amount of at least one of molybdenum, tungsten, nickel and cobalt sulfides combined with a foraminous refractory oxide support.
Claim 7
Dependent Claim
53 words
The method of claim 7 wherein said catalyst comprises at least about 1 weight percent nickel or cobalt sulfide and at least about 5 weight percent molybdenum or tungsten sulfide, said refractory oxide comprises at least about 50 weight percent amorphous alumina, and said hydrocarbons contain less than about 100 ppm organic sulfur.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |