Patent US3876526A successfully refreshed from Google Patents.
US3876526A
Expired / Lapsed
US
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Catalytic cracking process using externally introduced carbon particles
Assignee: Chevron USA Inc
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Filing: 1974-06-10
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Granted: 1975-04-08
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Expires: 1994-06-10
Abstract
Abstract A process for producing valuable products including gasoline and jet fuel by catalytic cracking with an acidic catalyst wherein the catalyst activity is improved and the selectivity of the catalyst for production of various C.sub.5 + product cuts is increased by carrying out the catalytic cracking process in the presence of dispersed carbon particles added to the reaction zone. Preferably, the particles are added to the hydrocarbon feedstock and dispersed therein prior to contacting the feedstock with the catalytic cracking catalyst in the reaction zone.
Inventors
- 👤 Bernard F Mulaskey
- 👤 Phillip R Bose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:38
CPC Classifications
C; C10; C10G; C10G11/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
48 words
IN A PROCESS WHEREIN A HYDROCARBON FEEDSTOCK IS CATALYTICALLY CRACKER BY CONTACTING SAID FEEDSTOCK WITH AN ACIDIC CATALYTIC CRACKING CATALYST IN A CATALYST CRACKING ZONE, THE IMPROVEMENT WHICH COMPRISES CRACKING SAID FEEDSTOCK IN THE PRESENCE OF AN EFFECTIVE AMOUNT OF DISPERSED CARBON PARTICLES ADDED TO SAID REACTION ZONE.
Claim 2
Dependent Claim
48 words
IN A PROCESS WHEREIN A HYDROCARBON FEEDSTOCK IS CATALYTICALLY CRACKER BY CONTACTING SAID FEEDSTOCK WITH AN ACIDIC CATALYTIC CRACKING CATALYST IN A CATALYST CRACKING ZONE, THE IMPROVEMENT WHICH COMPRISES CRACKING SAID FEEDSTOCK IN THE PRESENCE OF AN EFFECTIVE AMOUNT OF DISPERSED CARBON PARTICLES ADDED TO SAID REACTION ZONE.
Claim 3
Dependent Claim
28 words
The process of claim 1 wherein said carbon particles are added to said feedstock and dispersed therein prior to contacting said feedstock with said acidic catalytic cracking catalyst.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein said carbon particles are introduced into said catalytic cracking zone concurrently with said hydrocarbon feedstock.
Claim 5
Dependent Claim
33 words
The process of claim 1 wherein said carbon particles are present in an amount of from 0.1 to 10 weight percent based on the combined weight of said feedstock and said carbon particles.
Claim 6
Dependent Claim
33 words
The process of claim 1 wherein said carbon particles are present in an amount of from 0.5 to 7 weight percent based on the combined weight of said feedstock and said carbon particles.
Claim 7
Dependent Claim
12 words
The process of claim 1 wherein said carbon particles are petroleum coke.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein said carbon particles are activated charcoal.
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |