Patent US4162212A successfully refreshed from Google Patents.
US4162212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination process for octane upgrading the low-octane C5 -C6 component of a gasoline pool
Assignee: Chevron USA Inc
•
Filing: 1978-08-30
•
Granted: 1979-07-24
•
Expires: 1998-08-30
Abstract
Abstract Low-octane C 5 -C 6 gasoline pool mixtures or components are upgraded into improved-octane gasoline blendstock by (1) catalytically converting a minor yet significant portion of the C 6 -fraction into a relatively high-octane stock using a unique crystalline aluminosilica zeolite catalyst, (2) isomerizing the C 5 -fraction plus the remainder of the C 6 -fraction, and (3) blending the converted C 6 -portion with the C 5 -C 6 isomerizate.
Inventors
- 👤 Stephen J. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:08
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/42; B01J29/44; B01J29/405; B01J29/48; C; C10; C10L; C10L1/00; C10L1/04; C10L1/06; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
247 words
A process for producing a hydrocarbon blend having a motor octane number above about 78 from a C 5 -component and a C 6 -component, said components comprising mixtures of paraffinic hydrocarbons and, when admixed, boiling in the range of from about 25° C. to 70° C. and having a combined motor octane number below about 65, which comprises: passing a portion of said C 6 -component in contact with a ZSM-5-type crystalline aluminosilicate in at least one of the HZSM-5 and Zn-HZSM-5 forms under a temperature condition within the range of 400° to 550° C. and a pressure condition within the range of from about 0.5 to 10 atmospheres to produce a resulting hydrocarbon mixture having a motor octane number above about 100, said zeolite having a silica-to-alumina mol ratio in the range of from about 40 to 160, and said portion, based upon the sum of the volumes of said components, being in the range of from about 10 to 40 percent thereof; passing said C 5 -component and any remainder of said C 6 -component in contact with a hydrocarbon-isomerizing catalyst under isomerizing conditions, including a temperature condition within the range of from about 0° C. to 400° C. and a pressure condition within the range of from about 0.5 to 100 atmospheres to produce a resultant hydrocarbon mixture having a motor octane number above about 70; and combining at least a major portion of each of said resulting mixtures to produce said blend.
Claim 2
Dependent Claim
247 words
A process for producing a hydrocarbon blend having a motor octane number above about 78 from a C 5 -component and a C 6 -component, said components comprising mixtures of paraffinic hydrocarbons and, when admixed, boiling in the range of from about 25° C. to 70° C. and having a combined motor octane number below about 65, which comprises: passing a portion of said C 6 -component in contact with a ZSM-5-type crystalline aluminosilicate in at least one of the HZSM-5 and Zn-HZSM-5 forms under a temperature condition within the range of 400° to 550° C. and a pressure condition within the range of from about 0.5 to 10 atmospheres to produce a resulting hydrocarbon mixture having a motor octane number above about 100, said zeolite having a silica-to-alumina mol ratio in the range of from about 40 to 160, and said portion, based upon the sum of the volumes of said components, being in the range of from about 10 to 40 percent thereof; passing said C 5 -component and any remainder of said C 6 -component in contact with a hydrocarbon-isomerizing catalyst under isomerizing conditions, including a temperature condition within the range of from about 0° C. to 400° C. and a pressure condition within the range of from about 0.5 to 100 atmospheres to produce a resultant hydrocarbon mixture having a motor octane number above about 70; and combining at least a major portion of each of said resulting mixtures to produce said blend.
Claim 3
Dependent Claim
17 words
A process as in claim 1 wherein said components are obtained by fractionating a light straight-run naphtha.
Claim 4
Dependent Claim
14 words
A process as in claim 1 wherein said zeolite is in the Zn-HZSM-5 form.
Claim 5
Dependent Claim
14 words
A process as in claim 1 wherein said zeolite is in the H-ZSM-5 form.
Claim 6
Dependent Claim
26 words
A process as in claim 1 wherein at least a portion of said blend is combined with a full or partial gasoline-boiling-range gasoline stock or pool.
Claim 7
Dependent Claim
21 words
A process as in claim 1 wherein said isomerizing catalyst is a composite of palladium, ultrastable HY zeolite and alumina matrix.
Claim 8
Dependent Claim
18 words
A process as in claim 1 wherein said isomerizing catalyst is a chlorided composite of platinum and alumina.
Claim 9
Dependent Claim
63 words
A process as in claim 1 wherein said contacting with said ZSM-5 zeolite catalyst is in the presence of an amount of a gas containing at least one hydrocarbon selected from the group consisting of propane, n-butane and isobutane, said amount based upon said portion of said C 6 -component, being in the range of from about 1 to 100 weight percent thereof.
Claim 10
Dependent Claim
20 words
A process as in claim 1 wherein said silica-to-alumina ratio is in the range of from about 75 to 120.
Claim 11
Dependent Claim
40 words
A process as in claim 1 wherein said silica-to-alumina ratio is in the range of from about 95 to 105 and said portion is in the range of from about 15 to 25 percent of said sum of the volumes.
Claim 12
Dependent Claim
36 words
A process as in claim 1 wherein said blend is admixed with a C 7 -plus reformate obtained by reforming a C 7 -plus straight-run gasoline component under conventional reforming conditions using a platinum-rhenium-chloride catalyst composite.
Claim 13
Dependent Claim
227 words
A process for upgrading a hydrocarbon feed boiling in the range of from about 25° C. to 70° C. and containing at least about 10 volume percent each of a C 5 - and C 6 -component, said feed having a motor octane number below about 65, which comprises: separating said feed into a lower-boiling-range fraction and an upper-boiling-range fraction, said fractions being obtained by fractionally distilling said feed using a cut-point temperature of about 54° C.; passing a minor portion of said fraction in contact with a ZSM-5-type crystalline aluminosilicate zeolite in at least one of the HZSM-5 and Zn-HZSM-5 forms under a temperature condition within the range of 400° to 550° C. and a pressure condition within the range of from 0.5 to 10 atmospheres to produce a first resulting fraction having a motor octane number above about 100; passing said lower fraction and the remainder of said upper fraction in contact with a hydrocarbon isomerizing catalyst under isomerizing conditions, including temperature conditions within the range of from about 0° C. to 400° C. and pressure conditions within the range of from about 0.5 to 100 atmospheres to produce a second resulting fraction having a motor octane number above about 70; combining at least a major portion of each of said resulting fractions to produce a blend having a motor octane number above about 78.
Claim 14
Dependent Claim
227 words
A process for upgrading a hydrocarbon feed boiling in the range of from about 25° C. to 70° C. and containing at least about 10 volume percent each of a C 5 - and C 6 -component, said feed having a motor octane number below about 65, which comprises: separating said feed into a lower-boiling-range fraction and an upper-boiling-range fraction, said fractions being obtained by fractionally distilling said feed using a cut-point temperature of about 54° C.; passing a minor portion of said fraction in contact with a ZSM-5-type crystalline aluminosilicate zeolite in at least one of the HZSM-5 and Zn-HZSM-5 forms under a temperature condition within the range of 400° to 550° C. and a pressure condition within the range of from 0.5 to 10 atmospheres to produce a first resulting fraction having a motor octane number above about 100; passing said lower fraction and the remainder of said upper fraction in contact with a hydrocarbon isomerizing catalyst under isomerizing conditions, including temperature conditions within the range of from about 0° C. to 400° C. and pressure conditions within the range of from about 0.5 to 100 atmospheres to produce a second resulting fraction having a motor octane number above about 70; combining at least a major portion of each of said resulting fractions to produce a blend having a motor octane number above about 78.
Claim 15
Dependent Claim
47 words
The process of claims 1 or 12 wherein said isomerizing conditions include a temperature within the range from 120° to 200° C., a pressure from 10 to 45 atmospheres, a liquid hourly space velocity from 0.5 to 4 and a hydrogen-to-hydrocarbon mole ratio from 1 to 8.
References Cited (Backward Citations)
US2905619A
Cited
US3002916A
Cited
US3700585A
Cited
US3729409A
Cited
US3753891A
Cited
US3770614A
Cited
US3756942A
Cited
US3871993A
Cited
US3950241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |