US4299688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
FCC Process using low coke-make FCC catalyst
Assignee: Honeywell UOP LLC
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Filing: 1980-10-24
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Granted: 1981-11-10
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Expires: 2000-10-24
Abstract
Abstract This invention comprises a process for cracking a hydrocarbon charge stock using a zeolitic crystalline aluminosilicate dispersed in a porous inorganic oxide carrier material comprising silica, alumina or zirconium and a constituent comprising the ions of one or more rare earths with the weight ratio on a volatile free basis of the rare earth ions to the carrier material being greater than 1.0:100.0. The method of manufacture of the composite comprises mixing a catalyst powder comprising the zeolite dispersed in a porous inorganic oxide carrier material with a solution of a salt of the rare earth, separating a filter cake from the slurry by a means not involving the washing of the filter cake and calcining the filter cake.
Inventors
- 👤 Hosheng Tu
- 👤 David C. DeCoster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:13
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
A process for cracking a hydrocarbon charge stock which comprises contacting said charge stock at cracking conditions with a catalytic composite manufactured by a method which comprises: (a) preparing a catalyst powder comprising a zeolitic crystalline aluminosilicate dispersed in a porous carrier material consisting essentially of silica, zirconia and alumina; (b) mixing said powder with a sufficient amount of an aqueous solution of a water soluble rare earth salt to form a slurry of said catalyst powder, the stoichiometric excess concentration of said rare earth salt in the solution being sufficient to impart to the final catalyst a weight ratio on a volatile free basis of rare earth ions to said carrier material greater than 1.0:100.0; (c) filtering or centrifuging said slurry to separate therefrom a filter cake containing said catalyst powder; and (d) calcining said filter cake without washing or drying said filter cake and recovering the resultant catalytic composite.
Claim 2
Dependent Claim
151 words
A process for cracking a hydrocarbon charge stock which comprises contacting said charge stock at cracking conditions with a catalytic composite manufactured by a method which comprises: (a) preparing a catalyst powder comprising a zeolitic crystalline aluminosilicate dispersed in a porous carrier material consisting essentially of silica, zirconia and alumina; (b) mixing said powder with a sufficient amount of an aqueous solution of a water soluble rare earth salt to form a slurry of said catalyst powder, the stoichiometric excess concentration of said rare earth salt in the solution being sufficient to impart to the final catalyst a weight ratio on a volatile free basis of rare earth ions to said carrier material greater than 1.0:100.0; (c) filtering or centrifuging said slurry to separate therefrom a filter cake containing said catalyst powder; and (d) calcining said filter cake without washing or drying said filter cake and recovering the resultant catalytic composite.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein said zeolitic crystalline aluminosilicate comprises a rare earth ion exchanged Y-zeolite.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein said rare earth comprises lanthanum.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said rare earth salt comprises rare earth chloride.
Claim 6
Dependent Claim
42 words
The process of claim 1 wherein said calcining without washing or drying said filter cake is effected at a temperature of from about 200° C. to about 750° C. and a calcining time of from about 30 minutes to about 5 hours.
Claim 7
Dependent Claim
36 words
The process of claim 1 wherein said catalyst powder is obtained as a filter cake from an ion exchange procedure whereby sodium ions contained in the catalyst are exchanged with ammonium ions in an aqueous medium.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |