Patent US4434048A successfully refreshed from Google Patents.
US4434048A
Expired / Lapsed
US
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Hydrotreating catalyst and use thereof
Assignee: Lummus Technology LLC
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Filing: 1983-04-04
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Granted: 1984-02-28
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Expires: 2003-04-04
Abstract
Abstract A catalyst for hydrotreating of heavy feedstocks comprised of nickel and molybdenum, supported on alumina having a defined pore size distribution which has been calcined at a temperature of from 1150° F. -1300° F. Calcining of such catalyst at such temperatures is required in order to provide for effective use thereof as a hydrotreating catalyst for higher boiling feedstocks.
Inventors
- 👤 Harvey D. Schindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:38
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/883; C; C10; C10G; C10G49/00; C10G49/02; C10G49/04; B01J35/61; B01J35/615; B01J35/63; B01J35/635; B01J35/64; B01J35/647; B01J35/651
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
In a process for the hydrotreating of a heavier hydrocarbon containing feedstock having at least 50% thereof boiling above 975° F. in the presence of a hydrotreating catalyst, the improvement comprising: said hydrotreating catalyst being a catalytically effective amount of nickel and molybdenum supported on an alumina support, said catalyst having a total porosity of at least 0.5 cc/g and a pore size distribution of from 0.25 to 0.40 cc/g of pores with a diameter of less than 250° A., 0.10 to 0.25 cc/g of pores with a diameter of from 250°-500° A., from 0.20 to 0.30 cc/g of pores with a diameter of from 500°-1500° A., from 0.05 to 0.15 cc/g of pores with a diameter of from 1500°-4000° A., and from 0.03 to 0.10 cc/g of pores with a diameter of greater than 4000° A., said catalyst comprised of nickel and molybdenum supported on alumina having been prepared with calcining at a temperature of from 1150° F. to 1300° F.
Claim 2
Dependent Claim
162 words
In a process for the hydrotreating of a heavier hydrocarbon containing feedstock having at least 50% thereof boiling above 975° F. in the presence of a hydrotreating catalyst, the improvement comprising: said hydrotreating catalyst being a catalytically effective amount of nickel and molybdenum supported on an alumina support, said catalyst having a total porosity of at least 0.5 cc/g and a pore size distribution of from 0.25 to 0.40 cc/g of pores with a diameter of less than 250° A., 0.10 to 0.25 cc/g of pores with a diameter of from 250°-500° A., from 0.20 to 0.30 cc/g of pores with a diameter of from 500°-1500° A., from 0.05 to 0.15 cc/g of pores with a diameter of from 1500°-4000° A., and from 0.03 to 0.10 cc/g of pores with a diameter of greater than 4000° A., said catalyst comprised of nickel and molybdenum supported on alumina having been prepared with calcining at a temperature of from 1150° F. to 1300° F.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the hydrotreating is at a temperature of from 700° F. to 900° F.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein the hydrotreating is operated at a conversion of at least 50%, based on components boiling above 975° F.
Claim 5
Dependent Claim
24 words
The process of claim 1 wherein the catalyst includes from 1% to 6% of nickel and from 5% to 16% of molybdenum, by weight.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the temperature of calcining is from 1150° F. to 1250° F.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the total porosity of the catalyst is from 0.75 to 0.95 cc/g.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein the alumina is gamma alumina.
Claim 9
Dependent Claim
16 words
The process of claim 1 wherein the catalyst further includes a catalytically effective amount of cobalt.
References Cited (Backward Citations)
US3530066A
Cited
US4006076A
Cited
US3966588A
Cited
US4013547A
Cited
US4032433A
Cited
US4225421A
Cited
US4257922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |