Patent US3923641A successfully refreshed from Google Patents.
US3923641A
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Hydrocracking naphthas using zeolite beta
Assignee: Mobil Oil AS
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Filing: 1974-02-20
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Granted: 1975-12-02
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Expires: 1994-02-20
Abstract
Abstract C5 naphthas, especially C7 naphthas, may be selectively hydrocracked to yield a high isobutane-normal butane ratio by contacting the naphtha with a zeolite beta within the temperature range of from about 400* to about 550*F.
Inventors
- 👤 Roger A Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:01
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G2400/00; C10G2400/02; C10G2400/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
70 words
A PROCESS FOR HYDROCRACKING A C5+ NAPHTHA WHICH COMPRISES CONTACTING SAID NAPHTHA WITH A ZEOLITE BETA AT A TEMPERATURE OF FROM ABOUT 400*F TO ABOUT 550*F, AT A SPACE VELOCITY OF FROM ABOUT 0.1 TO ABOUT 20 AND AT A HYDROGEN TO HYDROCARBON RATIO OF FROM ABOUT 1 TO 1 TO ABOUT 1 TO 15, SUCH THAT THE FINAL PRODUCT HAS A I-C1 TO N-C4 RATIO OF AT LEAST 7.
Claim 2
Dependent Claim
70 words
A PROCESS FOR HYDROCRACKING A C5+ NAPHTHA WHICH COMPRISES CONTACTING SAID NAPHTHA WITH A ZEOLITE BETA AT A TEMPERATURE OF FROM ABOUT 400*F TO ABOUT 550*F, AT A SPACE VELOCITY OF FROM ABOUT 0.1 TO ABOUT 20 AND AT A HYDROGEN TO HYDROCARBON RATIO OF FROM ABOUT 1 TO 1 TO ABOUT 1 TO 15, SUCH THAT THE FINAL PRODUCT HAS A I-C1 TO N-C4 RATIO OF AT LEAST 7.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the naphtha is a C7 naphtha.
Claim 4
Dependent Claim
28 words
The process of claim 1 wherein the zeolite beta contains therein a metal cation of the group consisting of Groups 5b, 6b and 8 of the Periodic Table.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein the metal cation is platinum.
Claim 6
Dependent Claim
25 words
The process of claim 3 wherein said metal cation is present to the extent of from 0.1 percent by weight to 2.0 percent by weight.
Claim 7
Dependent Claim
19 words
The process of claim 1 wherein the pressure during hydrocracking is from about 0 psig to about 2,000 psig.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |