US4108761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denitrification of carbonaceous feedstocks
Assignee: Lummus Technology LLC
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Filing: 1977-04-11
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Granted: 1978-08-22
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Expires: 1997-04-11
Abstract
Abstract A carbonaceous feedstock, obtained from either a petroleum or coal source, is hydrodenitrified by the use of a supported sulfided catalyst containing nickel, molybdenum and iron, with the molybdenum being present in an amount of from about 10% to about 20%, by weight, calculated as MoO3, based on total weight of catalyst, the iron to molybdenum atomic ratio being from about 0.05 to about 0.5, and the nickel to molybdenum atomic ratio being from about 0.2 to about 0.6.
Inventors
- 👤 Morgan C. Sze
- 👤 Abraham P. Gelbein
- 👤 Joon T. Kwon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:28
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/883
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
89 words
A process for hydrodenitrification of a nitrogen-containing carbonaceous feedstock having a nitrogen content of at least 0.5 weight % comprising: effecting hydrodenitrification in the presence of a supported sulfided catalyst containing nickel, molybdenum and iron wherein the molybdenum is present in an amount from about 10% to about 20%, by weight, calculated as MoO 3 , based on total weight of catalyst, the iron to molybdenum atomic ratio being from about 0.05 to about 0.5 and the nickel to molybdenum atomic ratio being from about 0.3 to about 0.5.
Claim 2
Dependent Claim
89 words
A process for hydrodenitrification of a nitrogen-containing carbonaceous feedstock having a nitrogen content of at least 0.5 weight % comprising: effecting hydrodenitrification in the presence of a supported sulfided catalyst containing nickel, molybdenum and iron wherein the molybdenum is present in an amount from about 10% to about 20%, by weight, calculated as MoO 3 , based on total weight of catalyst, the iron to molybdenum atomic ratio being from about 0.05 to about 0.5 and the nickel to molybdenum atomic ratio being from about 0.3 to about 0.5.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the carbonaceous feedstock is derived from petroleum.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the carbonaceous feedstock is derived from coal.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein the support is activated alumina.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein the support is silica-alumina.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein the support is silica stabilized activated alumina.
Claim 8
Dependent Claim
30 words
The process of claim 1 wherein the hydrodenitrification is effected at a temperature from about 500° F to about 850° F to effect at least 50% denitrification of the feedstock.
Claim 9
Dependent Claim
118 words
A process for the hydrodenitrification of a nitrogen containing carbonaceous feedstock having a nitrogen content of at least 0.5 weight %, comprising: effecting hydrodenitrification in the presence of a suported sulfided catalyst containing nickel, molybdenum and iron wherein the molybdenum is present in an amount from about 13% to 17%, by weight, calculated as MoO 3 , based on total catalyst weight and the iron to molybdenum atomic ratio is from about 0.1 to about 0.3 and the nickel to molybdenum atomic ratio is from about 0.3 to about 0.5, said hydrodenitrification being effected at a temperature of from about 500° F to about 850° F and at a pressure of from about 1,000 to about 4,000 psig.
Claim 10
Dependent Claim
118 words
A process for the hydrodenitrification of a nitrogen containing carbonaceous feedstock having a nitrogen content of at least 0.5 weight %, comprising: effecting hydrodenitrification in the presence of a suported sulfided catalyst containing nickel, molybdenum and iron wherein the molybdenum is present in an amount from about 13% to 17%, by weight, calculated as MoO 3 , based on total catalyst weight and the iron to molybdenum atomic ratio is from about 0.1 to about 0.3 and the nickel to molybdenum atomic ratio is from about 0.3 to about 0.5, said hydrodenitrification being effected at a temperature of from about 500° F to about 850° F and at a pressure of from about 1,000 to about 4,000 psig.
Claim 11
Dependent Claim
22 words
The process of claim 8 wherein the support is selected from the group consisting of activated aluminas, silica-alumina and silica stabilized alumina.
Claim 12
Dependent Claim
13 words
The process of claim 9 wherein the carbonaceous feedstock is derived from coal.
Claim 13
Dependent Claim
13 words
The process of claim 9 wherein the carbonaceous feedstock is derived from petroleum.
Claim 14
Dependent Claim
44 words
The process of claim 1 wherein the molybdenum is present in an amount from about 13% to 17%, by weight, calculated as MoO 3 , based on total catalyst weight and the iron to molybdenum atomic ratio is from about 0.1 to about 0.3.
References Cited (Backward Citations)
US3369999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |