Patent US3617524A successfully refreshed from Google Patents.
US3617524A
Expired / Lapsed
US
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Ebullated bed hydrocracking
Assignee: Standard Oil Co
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Filing: 1969-06-25
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Granted: 1971-11-02
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Expires: 1989-06-25
Abstract
Abstract Disclosed is an improved H-oil process for hydrocracking a reduced crude oil or the like. The hydrocracking is conducted in a reactor containing an ebullating bed of oil, hydrogen, and hydrocracking catalyst, and a relatively high velocity oil-gas stream is injected into the reactor. Simultaneously a portion of the reacting mass within the reactor is withdrawn and reintroduced into the reactor by mixing with the stream.
Inventors
- 👤 Arthur L Conn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:48
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/24; C10G47/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
22 words
The process defined in claim 1 wherein the confined stream is directed into or near the lower portion of the reaction zone.
Claim 2
Dependent Claim
29 words
The process defined in claim 1 wherein the confined stream is dispersed as it enters said reaction zone in a manner which does not unduly disturb the ebullating bed.
Claim 3
Dependent Claim
158 words
A hydrocracking process for making lower molecular weight hydrocarbons from a higher molecular weight hydrocarbon oil feed, comprising the steps of: a. establishing within a vertical reactor an ebullating bed of hydrogen, hydrocracking catalyst, and oil feed, said bed being maintained at conditions which promote the formation of said lower-molecular weight hydrocarbons; b. withdrawing catalyst from an intermediate part of the bed as a confined stream; c. mixing said withdrawn catalyst with a vertical, upwardly flowing, high-velocity stream of hydrogen and oil feed injected into said confined stream which goes into the lower portion of the reactor, said high-velocity stream flowing at a velocity of from about 10 to about 100 times greater than the average velocity of material in the ebullating bed; d. dispersing said confined stream as it is injected into said bed in a manner which does not unduly disturb said bed; and e. withdrawing from the upper portion of the reactor low-molecular weight hydrocarbons.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |