Patent US4499316A successfully refreshed from Google Patents.
US4499316A
Expired / Lapsed
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Conversion of effluent hydrocarbons streams using aluminophosphate catalysts
Assignee: Katalistiks International Inc
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Filing: 1984-04-04
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Granted: 1985-02-12
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Expires: 2004-04-04
Abstract
Abstract By-product effluent streams from pyrolytic hydrocarbon cracking processes, containing monoolefins and diolefins, are treated to hydrogenate the olefins and to aromatize the aliphatics, with a catalyst comprising the aluminophosphates of U.S. Pat. No. 4,310,440.
Inventors
- 👤 Daniel C. Garska
- 👤 Cyril B. Tellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:42
CPC Classifications
C; C07; C07C; C07C2/00; C07C2529/00; C07C2529/82; C07C2529/83
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
107 words
A low severity process for the preparation of a benzene-toluene-xylenes enriched stream containing minimal monooolefin and diolefin content, from a feed stream comprising a by-product effluent of a process for the pyrolitic cracking of hydrocarbons to produce light olefins or diolefins, said by-product effluent stream containing olefins and diolefins, said process comprising contacting said by-product effluent stream, under low severity conditions including a temperature within the range of about 300°-700° C., a pressure within the range of about 0 to 100 atmospheres, and a weight hourly space velocity within the range of about 0.1 to about 20, with a catalyst comprising at least one aluminophosphate molecular sieve.
Claim 2
Dependent Claim
107 words
A low severity process for the preparation of a benzene-toluene-xylenes enriched stream containing minimal monooolefin and diolefin content, from a feed stream comprising a by-product effluent of a process for the pyrolitic cracking of hydrocarbons to produce light olefins or diolefins, said by-product effluent stream containing olefins and diolefins, said process comprising contacting said by-product effluent stream, under low severity conditions including a temperature within the range of about 300°-700° C., a pressure within the range of about 0 to 100 atmospheres, and a weight hourly space velocity within the range of about 0.1 to about 20, with a catalyst comprising at least one aluminophosphate molecular sieve.
Claim 3
Dependent Claim
38 words
Process of claim 1 wherein said conditions include a temperature within the range of about 350°-600° C., a pressure within the range of about 0-7 atmospheres, and a weight hourly space velocity within the range of about 0.5-5.0.
Claim 4
Dependent Claim
13 words
Process of claim 1 wherein said by-product effluent comprises a C 4 stream.
Claim 5
Dependent Claim
13 words
Process of claim 1 wherein said by-product effluent comprises a C 5 stream.
Claim 6
Dependent Claim
18 words
Process of claim 1 wherein said by-product effluent comprises a whole or fractionated dripolene or pyrolysis gasoline stream.
Claim 7
Dependent Claim
13 words
Process of claim 1 wherein said feed stream is admixed with a diluent.
Claim 8
Dependent Claim
9 words
Process of claim 6 wherein said diluent is water.
Claim 9
Dependent Claim
9 words
Process of claim 6 wherein said diluent is hydrogen.
Claim 10
Dependent Claim
12 words
Process of claim 6 wherein said diluent is a low boiling paraffin.
Claim 11
Dependent Claim
18 words
Process of claim 6 wherein said diluent is a mixture of a low boiling paraffin, hydrogen and/or steam.
Claim 12
Dependent Claim
11 words
Process of claim 1 wherein the aluminophosphate is AlPO 4 -5.
Claim 13
Dependent Claim
11 words
Process of claim 1 wherein the aluminophosphate is AlPO 4 -11.
Claim 14
Dependent Claim
11 words
Process of claim 1 wherein the aluminophosphate is AlPO 4 -14.
Claim 15
Dependent Claim
11 words
Process of claim 1 wherein the aluminophosphate is AlPO 4 -31.
References Cited (Backward Citations)
US2507625A
Cited
US3271299A
Cited
US3342750A
Cited
US3657150A
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US4132669A
Cited
US4179358A
Cited
US4385994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |