Patent US4149964A successfully refreshed from Google Patents.
US4149964A
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Method of injecting hydrocarbon feed
Assignee: Honeywell UOP LLC
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Filing: 1977-12-05
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Granted: 1979-04-17
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Expires: 1997-12-05
Abstract
Abstract A method of injecting a hydrocarbon feed into a catalytic conversion zone whereby wall temperatures within the conversion zone are reduced and overcracking of the hydrocarbon feed is minimized.
Inventors
- 👤 David B. Bartholic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:58
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1818; B01J8/02; B01J8/0278; B01J8/1827; C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; B05; B05B; B05B7/00; B05B7/02; B05B7/08; B05B7/0892
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
In a hydrocarbon conversion process wherein a hydrocarbon feed is contacted in a conversion zone having a center portion and an inside vertical wall with a fluidizable catalyst introduced to the lower portion of said zone, the method of introducing the hydrocarbon feed to the conversion zone which comprises: (a) injecting a first portion of said feed vertically upward into said center portion of the conversion zone from a point below the point of introduction of the catalyst at sufficient velocity to fluidize the catalyst; (b) injecting the remaining portion of said feed in a plurality of streams which are circumferentially and evenly spaced around said center portion of the conversion zone and are directed upwardly and at a substantially uniform angle to said inside wall at a velocity of from about 1 to about 50 feet per second; and (c) impinging said streams at said velocity against said inside wall at horizontally spaced points above said point of introduction of the catalyst to the conversion zone to reduce the inside wall temperatures in said zone.
Claim 2
Dependent Claim
176 words
In a hydrocarbon conversion process wherein a hydrocarbon feed is contacted in a conversion zone having a center portion and an inside vertical wall with a fluidizable catalyst introduced to the lower portion of said zone, the method of introducing the hydrocarbon feed to the conversion zone which comprises: (a) injecting a first portion of said feed vertically upward into said center portion of the conversion zone from a point below the point of introduction of the catalyst at sufficient velocity to fluidize the catalyst; (b) injecting the remaining portion of said feed in a plurality of streams which are circumferentially and evenly spaced around said center portion of the conversion zone and are directed upwardly and at a substantially uniform angle to said inside wall at a velocity of from about 1 to about 50 feet per second; and (c) impinging said streams at said velocity against said inside wall at horizontally spaced points above said point of introduction of the catalyst to the conversion zone to reduce the inside wall temperatures in said zone.
Claim 3
Dependent Claim
20 words
The method as described in claim 1 wherein said first portion of hydrocarbon feed is injected in a single stream.
Claim 4
Dependent Claim
19 words
The method as described in claim 1 wherein said first portion of hydrocarbon feed is injected in multiple streams.
Claim 5
Dependent Claim
33 words
The method as described in claim 1 wherein said first and said second portions of hydrocarbon feed are injected at hydrocarbon feed velocities of from about 5 to about 20 feet per second.
Claim 6
Dependent Claim
34 words
The method as described in claim 1 wherein said second portion of said feed impinges on said inside wall at a distance of 12 inches or more downstream of said point of feed introduction.
Claim 7
Dependent Claim
30 words
The method as described in claim 1 wherein said angle of said plurality of streams ranges, from the vertical center line of said streams, from about 10° to about 30°.
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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |