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Patent US4612108A successfully refreshed from Google Patents.
US4612108A
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US
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Hydrocracking process using zeolite beta
Assignee: Mobil Oil AS
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Filing: 1985-08-05
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Granted: 1986-09-16
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Expires: 2005-08-05
Abstract
Abstract A hydrocracking process for feedstocks containing high boiling, waxy components uses a number of sequential beds of hydrocracking catalyst based on zeolite beta. The proportion of zeolite beta in the catalyst increases in sequence so that the final bed has the highest zeolite concentration. The dewaxing activity of the zeolite beta-containing catalysts is enhanced by the use of sequential beds in this manner. The pour point of the high boiling fraction is reduced, as well as that of the distillate product, permitting part of the high boiling fraction to be included in the distillate product, thereby increasing the useful distillate yield.
Inventors
- 👤 Philip J. Angevine
- 👤 Kenneth M. Mitchell
- 👤 Stephen M. Oleck
- 👤 Stuart S. Shih
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:06
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/7007; B01J29/72; B01J29/76; B01J29/7615; C10G65/00; C10G65/02; C10G65/10; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
62 words
A process for the hydrocracking and dewaxing of a petroleum fraction comprising waxy components boiling above 345° C., which comprises passing the fraction over a hydrocracking catalyst comprising zeolite beta and a matrix material in the presence of hydrogen and under hydrocracking conditions, the proportion of zeolite beta in the hydrocracking catalyst increasing in the direction in which the fraction is passed.
Claim 2
Dependent Claim
62 words
A process for the hydrocracking and dewaxing of a petroleum fraction comprising waxy components boiling above 345° C., which comprises passing the fraction over a hydrocracking catalyst comprising zeolite beta and a matrix material in the presence of hydrogen and under hydrocracking conditions, the proportion of zeolite beta in the hydrocracking catalyst increasing in the direction in which the fraction is passed.
Claim 3
Dependent Claim
34 words
A process according to claim 1 in which the hydrocracking catalyst comprises zeolite beta, a metal component of a metal of Groups IVA, VA, VIA, or VIIIA of the Periodic Table and a binder.
Claim 4
Dependent Claim
17 words
A process according to claim 2 in which the binder comprises silica, alumina, silica-alumina, or a clay.
Claim 5
Dependent Claim
56 words
A process according to claim 1 in which the proportion of zeolite beta in the catalyst increases in the direction in which the fraction passes from an initial low value in the range from 5 to 35 weight percent zeolite beta to a final high value in the range 50 to 90 weight percent zeolite beta.
Claim 6
Dependent Claim
56 words
A process according to claim 1 in which the proportion of zeolite beta in the catalyst increases in the direction in which the fraction passes from an initial low value in the range from 10 to 25 weight percent zeolite beta to a final high value in the range 60 to 80 weight percent zeolite beta.
Claim 7
Independent Claim
70 words
A method of hydrocracking and dewaxing a petroleum fraction feed comprising waxy components boiling above 345° C. by: (i) hydrotreating the feed (ii) passing the hydrotreated feed under hydrocracking donditions in the presence of hydrogen in contact with a plurality of beds, in sequence, of hydrocracking catalysts comprising zeolite beta, a matrix material and a hydrogenation-dehydrogenation component, the proportion of zeolite beta in the hydrocracking catalysts increasing in successive beds.
Claim 8
Independent Claim
70 words
A method of hydrocracking and dewaxing a petroleum fraction feed comprising waxy components boiling above 345° C. by: (i) hydrotreating the feed (ii) passing the hydrotreated feed under hydrocracking donditions in the presence of hydrogen in contact with a plurality of beds, in sequence, of hydrocracking catalysts comprising zeolite beta, a matrix material and a hydrogenation-dehydrogenation component, the proportion of zeolite beta in the hydrocracking catalysts increasing in successive beds.
Claim 9
Dependent Claim
19 words
A method according to claim 6 in which the hydrotreated fraction is passed over two beds of hydrocracking catalysts.
Claim 10
Dependent Claim
25 words
A method according to claim 7 in which the first bed of hydrocracking catalyst in the sequence comprises 5 to 50 weight percent zeolite beta.
Claim 11
Dependent Claim
25 words
A method according to claim 7 in which the first bed of hydrocracking catalyst in the sequence comprises 10 to 25 weight percent zeolite beta.
Claim 12
Dependent Claim
25 words
A method according to claim 7 in which the second bed of hydrocracking catalyst in the sequence comprises 50 to 90 weight percent zeolite beta.
Claim 13
Dependent Claim
25 words
A method according to claim 7 in which the second bed of hydrocracking catalyst in the sequence comprises 60 to 80 weight percent zeolite beta.
Claim 14
Dependent Claim
21 words
A method according to claim 6 in which each hydrocracking catalyst comprises zeolite beta, a binder and a metal hydrogenation-dehydrogenation component.
Claim 15
Dependent Claim
25 words
A method according to claim 12 in which the metal component comprises a base metal of Groups VA, VIA or VIIIA of the Periodic Table.
Claim 16
Dependent Claim
15 words
A method according to claim 12 in which the metal component comprises platinum or palladium.
Claim 17
Dependent Claim
17 words
A method according to claim 12 in which the binder comprises alumina, silica, silica-alumina or a clay.
Claim 18
Dependent Claim
52 words
A method according to claim 6 in which the feed is hydrotreated by passing the feed in contact with a hydrotreating catalyst in the presence of hydrogen under hydrotreating conditions, after which the hydrotreated feed is passed directly to the first bed of hydrocracking catalyst without interstage separation of other hydrotreating products.
Claim 19
Dependent Claim
24 words
A process according to claim 6 in which the feed is passed over the hydrocracking catalysts at a pressure not more than 10,000 kPa.
Claim 20
Dependent Claim
24 words
A process according to claim 6 in which the feed is passed over the hydrocracking catalysts at a pressure not more than 7,000 kPa.
Claim 21
Dependent Claim
23 words
A process according to claim 16 in which the feed is passed over the hydrocracking at a pressure not more than 10,000 kPa.
Claim 22
Dependent Claim
24 words
A process according to claim 16 in which the feed is passed over the hydrocracking catalysts at a pressure not more than 7,000 kPa.
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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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |