US4012455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upgrading refinery light olefins with hydrogen contributor
Assignee: Mobil Oil AS
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Filing: 1974-07-31
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Granted: 1977-03-15
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Expires: 1994-07-31
Abstract
Abstract A combination operation is described and method for upgrading C2-C5 olefin rich streams with selective crystalline zeolite compositions in a fluidized catalyst system at relatively low pressures by reaction with hydrogen or a carbon-hydrogen fragment contributor, such as methanol, to form gasoline and light fuel oil boiling range products.
Inventors
- 👤 Hartley Owen
- 👤 Paul B. Venuto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:15
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/48; C10G3/49; C10G3/54; C10G3/55; C10G3/57; C10G2300/00; C10G2300/10; C10G2300/1037; C10G2300/1048; C10G2300/1059; C10G2300/40; C10G2300/4006; C10G2300/4081; C10G2400/00; C10G2400/02; C10G2400/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A method for upgrading hydrocarbons which comprises converting a gas oil boiling range hydrocarbon material combined with methanol by contact with a ZSM-5 type zeolite and faujasite as a suspension in a first riser conversion zone at a temperature within the range of 960° F to about 1200° F, separating the product of said first riser conversion zone to recover a stream comprising C 2 -C 5 olefins from higher boiling components comprising gasoline, heavy naphtha, light cycle oil and heavy cycle oil, converting C 2 -C 5 light olefins combined with methanol by contact with a ZSM-5 type zeolite and faujasite catalyst as a suspension in a second riser conversion zone at a temperature in the range of 500° to about 900° F and a contact time of 1 to 30 seconds, separating the products of said second conversion zone in the presence of the products from the first conversion zone, recycling separated light olefins and separated methanol to at least said second conversion zone.
Claim 2
Independent Claim
166 words
A method for upgrading hydrocarbons which comprises converting a gas oil boiling range hydrocarbon material combined with methanol by contact with a ZSM-5 type zeolite and faujasite as a suspension in a first riser conversion zone at a temperature within the range of 960° F to about 1200° F, separating the product of said first riser conversion zone to recover a stream comprising C 2 -C 5 olefins from higher boiling components comprising gasoline, heavy naphtha, light cycle oil and heavy cycle oil, converting C 2 -C 5 light olefins combined with methanol by contact with a ZSM-5 type zeolite and faujasite catalyst as a suspension in a second riser conversion zone at a temperature in the range of 500° to about 900° F and a contact time of 1 to 30 seconds, separating the products of said second conversion zone in the presence of the products from the first conversion zone, recycling separated light olefins and separated methanol to at least said second conversion zone.
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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |