US4282085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum distillate upgrading process
Assignee: Chevron USA Inc
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Filing: 1979-05-21
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Granted: 1981-08-04
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Expires: 1999-05-21
Abstract
Abstract A petroleum distillate feed is upgraded and a substantial C 3 -C 4 olefin product fraction produced by contacting the feed with ZSM-5 type zeolite at (1) a temperature in the 500°-800° F. range, (2) a pressure below about 13 atmospheres gauge, and (3) an LHSV in the 0.1-15 V/V/Hr range, and fractionating the effluent product stream.
Inventors
- 👤 Dennis J. O'Rear
- 👤 Jerome F. Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:17
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; C10G29/00; C10G29/16; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; C10G2400/00; C10G2400/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
A process for upgrading a petroleum distillate feed consisting essentially of hydrocarbons having a normal boiling point range in the range of from about 400° to 1000° F. and producing C 3 -C 4 olefins, based upon feed converted, in an amount in the range of from about 2 to 10 weight percent, comprising producing an effluent stream containing C 3 -C 4 olefins by contacting said feed with a catalyst comprising ZSM-5-type crystalline aluminosilicate zeolite in a form which is substantially free of hydrogenation activity, said contacting being under conditions including (a) a temperature in the range of from about 500° to 800° F.; (b) a pressure below about 13 atmospheres gauge; and (c) a liquid hourly space velocity in the range of from about 0.1 to 15, said feed having a content of nitrogen-containing impurities, calculated by weight as nitrogen, below about 5 ppm.
Claim 2
Dependent Claim
146 words
A process for upgrading a petroleum distillate feed consisting essentially of hydrocarbons having a normal boiling point range in the range of from about 400° to 1000° F. and producing C 3 -C 4 olefins, based upon feed converted, in an amount in the range of from about 2 to 10 weight percent, comprising producing an effluent stream containing C 3 -C 4 olefins by contacting said feed with a catalyst comprising ZSM-5-type crystalline aluminosilicate zeolite in a form which is substantially free of hydrogenation activity, said contacting being under conditions including (a) a temperature in the range of from about 500° to 800° F.; (b) a pressure below about 13 atmospheres gauge; and (c) a liquid hourly space velocity in the range of from about 0.1 to 15, said feed having a content of nitrogen-containing impurities, calculated by weight as nitrogen, below about 5 ppm.
Claim 3
Dependent Claim
26 words
A process as in claim 1 wherein said temperature is about 750° F., said space velocity is about 2, and said pressure is about 25 psig.
Claim 4
Dependent Claim
41 words
A process as in claim 1 wherein said catalyst is a composite of said zeolite and a porous binder or matrix, and said composite contains an amount of the zeolite in the range of from about 1 to 95 weight percent.
Claim 5
Dependent Claim
48 words
A process as in claim 1 wherein said feed has (1) a normal boiling point range in the range of from about 400° to 1000° F., (2) a sulfur-containing impurities content, calculated as sulfur, below about 20 ppm, and (3) a nitrogen-containing impurities content below about 1 ppmw.
Claim 6
Dependent Claim
17 words
A process as in claim 4 wherein said normal boiling point range is 500° to 800° F.
Claim 7
Dependent Claim
45 words
A process as in claim 1 wherein said catalyst is in a composite with a porous inorganic binder or matrix in such proportions as to contain said zeolite, in parts by weight, in an amount in the range of from about 1 to 95 percent.
Claim 8
Dependent Claim
19 words
A process as in claim 6 wherein said amount of zeolite is in the range 10 to 70 percent.
Claim 9
Dependent Claim
15 words
A process as in claim 1 wherein said zeolite is substantially in the hydrogen form.
Claim 10
Dependent Claim
11 words
A process as in claim 1 wherein said zeolite is ZSM-5.
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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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |