US4411770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrovisbreaking process
Assignee: Mobil Oil AS
•
Filing: 1982-04-16
•
Granted: 1983-10-25
•
Expires: 2002-04-16
Abstract
Abstract This invention provides an improved process for hydroconversion of a heavy hydrocarbon oil having a CCR content of 8-30 weight percent, which process involves contacting the heavy oil in a hydrovisbreaking zone containing a low acidity zeolite catalyst and recovering and fractionating the visbroken effluent to provide distillate products and a 1000 DEG F.+ fraction which has a Kinematic Viscosity between about 30,000-60,000 centistokes at 100 DEG F.
Inventors
- 👤 Nai Y. Chen
- 👤 Eric J. Scott
- 👤 David S. Shihabi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:28
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
A process for enhancing the hydroconversion of a heavy hydrocarbon oil having a Conradson Carbon Residue content between about 8-30 weight percent, which process comprises (1) contacting the heavy hydrocarbon oil with hydrogen and a catalyst in a hydrovisbreaking zone at a temperature between about 650°-850° F. and a pressure between about 200-2000 psi and a liquid hourly space velocity between about 0.1-5, wherein said catalyst comprises (a) a crystalline zeolite component having a silica/alumina ratio greater than about 12, and an acid activity less than about 10 on the Alpha Scale, and (b) a metallic hydrogenation component; and (2) recovering and fractionating the visbroken effluent to provide distillate products and a 1000° F.+ fraction which has a Kinematic Viscosity between about 30,000-60,000 centistokes at 100° F.
Claim 2
Dependent Claim
127 words
A process for enhancing the hydroconversion of a heavy hydrocarbon oil having a Conradson Carbon Residue content between about 8-30 weight percent, which process comprises (1) contacting the heavy hydrocarbon oil with hydrogen and a catalyst in a hydrovisbreaking zone at a temperature between about 650°-850° F. and a pressure between about 200-2000 psi and a liquid hourly space velocity between about 0.1-5, wherein said catalyst comprises (a) a crystalline zeolite component having a silica/alumina ratio greater than about 12, and an acid activity less than about 10 on the Alpha Scale, and (b) a metallic hydrogenation component; and (2) recovering and fractionating the visbroken effluent to provide distillate products and a 1000° F.+ fraction which has a Kinematic Viscosity between about 30,000-60,000 centistokes at 100° F.
Claim 3
Dependent Claim
17 words
A process in accordance with claim 1 wherein said zeolite has a Constraint Index between about 1-12.
Claim 4
Dependent Claim
21 words
A process in accordance with claim 1 wherein the exchange sites of said zeolite are occupied substantially by alkali metal cations.
Claim 5
Dependent Claim
12 words
A process in accordance with claim 1 wherein said zeolite is NaZSM-5.
Claim 6
Dependent Claim
12 words
A process in accordance with claim 1 wherein said zeolite is NaZSM-12.
Claim 7
Dependent Claim
12 words
A process in accordance with claim 1 wherein said zeolite is Na-Beta.
Claim 8
Dependent Claim
14 words
A process in accordance with claim 1 wherein said metallic hydrogenation component is cobalt-molybdenum.
Claim 9
Dependent Claim
14 words
A process in accordance with claim 1 wherein said metallic hydrogenation component is nickel-tungsten.
Claim 10
Dependent Claim
18 words
A process in accordance with claim 1 wherein said metallic hydrogenation component is on a porous refractory support.
Claim 11
Dependent Claim
19 words
A process in accordance with claim 1 wherein said metallic hydrogenation component occupies exchange sites of said zeolite component.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |