Patent US3843741A successfully refreshed from Google Patents.
US3843741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatization process and catalyst therefor
Assignee: Mobil Oil AS
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Filing: 1973-07-31
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Granted: 1974-10-22
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Expires: 1993-07-31
Abstract
Abstract Improvements in the aromatization of hydrocarbon streams by contact thereof with a ZSM-5 type of synthetic aluminosilicate zeolite catalyst at elevated temperatures of about 500* to 1500*F, in the absence of added hydrogen, at high severities to convert at least 80 weight percent of the feed to a product, the liquid portion of which comprises aromatics, which improvement is engendered by utilizing a matrix catalyst containing said zeolite in a high silica content binder.
Inventors
- 👤 T Yan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:07
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/405; B01J29/42; B01J29/46; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/36; B01J2229/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
IN THE PROCES OF CONVERTING AN ALIPHATIC FEEDSTOCK HAVING AN ATOMOSPHERIC BOILING POINT OF UP TO ABOUT 400*F TO AROMATIC HYDROCARBONS BY CONTACTING SUCH FEEDSTOCK WITH A ZSM-5 TYE: OF ZEOLITE AT AOUT 500* TO 1500*F AND A SPACE VELOCITY OF UP TO ABOUT 15 WHSV; THE IMPROVEMENT, WHEREBY INHIBITING THE FORMATION OF COKE ON SAID CATALYST AND IMPROVING THE STEAM STABILITY OF THE SAID CATALYST, COMPRISING USING AS SAID CATALYST A MATRIX OF ZSM-5 TYPE OF CRYSTALLINE ZEOLITE AND A SECOND, INORGANIC COMPONENT CONSISTING ESSENTIALLY OF AT LEAST ABOUT 80 WEIGHT PERCENT SILICA.
Claim 2
Dependent Claim
94 words
IN THE PROCES OF CONVERTING AN ALIPHATIC FEEDSTOCK HAVING AN ATOMOSPHERIC BOILING POINT OF UP TO ABOUT 400*F TO AROMATIC HYDROCARBONS BY CONTACTING SUCH FEEDSTOCK WITH A ZSM-5 TYE: OF ZEOLITE AT AOUT 500* TO 1500*F AND A SPACE VELOCITY OF UP TO ABOUT 15 WHSV; THE IMPROVEMENT, WHEREBY INHIBITING THE FORMATION OF COKE ON SAID CATALYST AND IMPROVING THE STEAM STABILITY OF THE SAID CATALYST, COMPRISING USING AS SAID CATALYST A MATRIX OF ZSM-5 TYPE OF CRYSTALLINE ZEOLITE AND A SECOND, INORGANIC COMPONENT CONSISTING ESSENTIALLY OF AT LEAST ABOUT 80 WEIGHT PERCENT SILICA.
Claim 3
Dependent Claim
12 words
The improved process claimed in claim 1 wherein said zeolite is ZSM-5.
Claim 4
Dependent Claim
13 words
The improved process claimed in claim 1 wherein said second component is silica.
Claim 5
Dependent Claim
22 words
The improved process claimed in claim 1 wherein said feedstock comprises olefinic hydrocarbons and said aromatization temperature is at least about 650*F.
Claim 6
Dependent Claim
22 words
The improved process claimed in claim 1 wherein said feedstock comprises paraffinic hydrocarbons and said aromatization temperature is at least about 850*F.
Claim 7
Dependent Claim
18 words
The improved process claimed in claim 1 wherein said matrix comprises about 1 to 95 weight percent zeolite.
Claim 8
Dependent Claim
13 words
The improved process claimed in claim 1 wherein said zeolite is Zn ZSM-5.
Claim 9
Dependent Claim
14 words
The improved process claimed in claim 1 wherein said zeolite is Zn Cu ZSM-5.
Claim 10
Dependent Claim
30 words
The improved process claimed in claim 1 including depositing coke on said catalyst at a rate of up to about 1 gram per 100 grams of carbon in the feed.
Claim 11
Dependent Claim
24 words
The improved process claimed in claim 1 wherein said catalyst has a zeolite to matrix material ratio of about 0.01 to 20 to 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |