US3957962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of hydrogen-rich gas
Assignee: Shell USA Inc
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Filing: 1974-03-22
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Granted: 1976-05-18
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Expires: 1994-03-22
Abstract
Abstract There is disclosed a process for the preparation of hydrogen-rich gas by passing a gas mixture containing carbon monoxide and water vapor over a sulfided catalyst which includes nickel and/or cobalt, molybdenum and aluminum with the aluminum being present in an amount of from 0.1 to 1.0 part of aluminum per part of nickel and/or cobalt on a weight basis. The catalyst is prepared by impregnating an alumina carrier with one or more solutions of compounds of the catalysts in which at least 40%w of the aluminum that is used is added to the carrier by co-impregnation with the nickel and/or cobalt.
Inventors
- 👤 John Ramsbotham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:23
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J37/00; B01J37/20; C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
157 words
A process for the preparation of a hydrogen-rich gas by converting a gas mixture including carbon monoxide and steam, comprising contacting said mixture at reaction conditions and a temperature between 175°C and 425°C and a pressure between 10 and 100 bar with a sulfided catalyst which comprises nickel and/or cobalt, molybdenum and 0.1-1.0 parts by weight of impregnated aluminum per part by weight of nickel and/or cobalt, all supported on an alumina carrier in an amount of 1-20 parts by weight of nickel and/or cobalt per 100 parts of alumina and the atomic ratio of nickel and/or cobalt to molybdenum is from 0.05 to 3.0, which catalyst is prepared by impregnating the carrier with one or more solutions of compounds of nickel and/or cobalt, molybdenum and aluminum in which at least 40% by weight of the aluminum is supported on the carrier by co-impregnation with the nickel and/or cobalt followed by drying and calcining the impregnated carrier.
Claim 2
Dependent Claim
157 words
A process for the preparation of a hydrogen-rich gas by converting a gas mixture including carbon monoxide and steam, comprising contacting said mixture at reaction conditions and a temperature between 175°C and 425°C and a pressure between 10 and 100 bar with a sulfided catalyst which comprises nickel and/or cobalt, molybdenum and 0.1-1.0 parts by weight of impregnated aluminum per part by weight of nickel and/or cobalt, all supported on an alumina carrier in an amount of 1-20 parts by weight of nickel and/or cobalt per 100 parts of alumina and the atomic ratio of nickel and/or cobalt to molybdenum is from 0.05 to 3.0, which catalyst is prepared by impregnating the carrier with one or more solutions of compounds of nickel and/or cobalt, molybdenum and aluminum in which at least 40% by weight of the aluminum is supported on the carrier by co-impregnation with the nickel and/or cobalt followed by drying and calcining the impregnated carrier.
Claim 3
Dependent Claim
24 words
The process of claim 1 wherein the catalyst comprises 0.3-0.8 parts by weight of impregnated aluminum per part by weight of nickel and/or cobalt.
Claim 4
Dependent Claim
26 words
The process of claim 1 wherein at least 50% by weight of the impregnated aluminum is supported on the carrier by co-impregnation with nickel and/or cobalt.
Claim 5
Dependent Claim
43 words
The process of claim 1 wherein the catalyst comprises 1-20 parts by weight of nickel and/or cobalt per 100 parts by weight of alumina, and the atomic ratio between nickel and/or cobalt on the one hand and molybdenum on the other is 0.05-3.0.
Claim 6
Dependent Claim
44 words
The process of claim 4 wherein the catalyst comprises 1-4 parts by weight of nickel and/or cobalt per 100 parts by weight of alumina and that the atomic ratio between nickel and/or cobalt on the one hand and molybdenum on the other is 0.1-1.0.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein the catalyst comprises nickel, molybdenum and aluminum.
Claim 8
Dependent Claim
40 words
The process of claim 6 wherein the catalyst comprises about 3 parts by weight of nickel, about 14 parts by weight of molybdenum and about 2 parts by weight of impregnated aluminum per 100 parts by weight of alumina carrier.
Claim 9
Dependent Claim
38 words
The process of claim 1 wherein the catalyst is prepared by co-impregnating the carrier with a single aqueous solution containing water soluble compounds of nickel and/or cobalt, molybdenum and aluminum, followed by drying and calcining the impregnated carrier.
Claim 10
Dependent Claim
25 words
The process of claim 1 wherein the catalyst is prepared by impregnating with a volume of solution equal to the pore volume of the carrier.
Claim 11
Dependent Claim
89 words
The process of claim 1 wherein the catalyst carrier is an alumina which contains less than 1% by weight silica, less than 1% by weight sulfate, less than 0.2% by weight halogen, has a surface area greater than 150 m 2 /g, a pore volume greater than 0.3 ml/g, an average pore diameter (calculated as 4 × 10 3 × quotient of pore volume and surface area) greater than 4.5 nm, and wherein the product of surface area and compacted bulk density is greater than 125 m 2 /ml.
Claim 12
Dependent Claim
17 words
The process of claim 1 wherein the carbon monoxide-containing gas comprises at least 10 ppmw of sulfur.
Claim 13
Dependent Claim
41 words
The process of claim 1 wherein the catalyst is sulfided by heating it slowly to a temperature between 325°C and 375°C in a mixture of hydrogen, hydrogen sulfide and steam, and subsequently maintaining it at this temperature until sulfiding is complete.
Claim 14
Dependent Claim
26 words
The process of claim 1 wherein the carbon monoxide-containing gas contains carbon monoxide and hydrogen and is obtained by incomplete combustion of a hydrocarbon with oxygen.
Claim 15
Dependent Claim
12 words
The process of claim 13 wherein the hydrocarbon is a petroleum fraction.
Claim 16
Dependent Claim
37 words
The process of claim 1 wherein said reaction is effected in at least two steps, at least one above and at least one below 300°C, to take advantage of reaction rates and the position of the equilibrium.
Claim 17
Dependent Claim
60 words
The process of claim 15 wherein the process is effected by passing the gas to be converted through two or more high temperature reactors at a temperature between 325°C and 400°C and subsequently passing the partly converted gas mixture through at least one low temperature reactor at a temperature between 200°C and 275°C and said low-temperature reactors contain said catalyst.
Claim 18
Dependent Claim
16 words
The process of claim 15 wherein said catalyst is used in the reaction step above 300°C.
Claim 19
Dependent Claim
23 words
The process of claim 1 wherein contact between said gas and said catalyst is effected at a pressure between 20 and 80 bar.
Claim 20
Dependent Claim
27 words
The process of claim 1 wherein the gas mixture, which is subjected to the water-gas shift reaction, comprises 1-50 mol of steam per mol of carbon monoxide.
References Cited (Backward Citations)
GB961860A
Cited
US3170758A
Cited
US3251652A
Cited
US3545926A
Cited
US3392001A
Cited
US3615217A
Cited
US3529935A
Cited
US3850840A
Cited
US3798005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |