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Patent US4369130A successfully refreshed from Google Patents.
US4369130A
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US
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Composition for removing sulfur oxides from a gas
Assignee: Standard Oil Co
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Filing: 1980-12-29
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Granted: 1983-01-18
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Expires: 2000-12-29
Abstract
Abstract Sulfur oxides are removed from a gas by an absorbent comprising at least one inorganic oxide selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium, and calcium in association with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium, and dysprosium, wherein the ratio by weight of inorganic oxide or oxides to rare earth metal or metals is from about 0.1 to about 30,000. Absorbed sulfur oxides are recovered as a sulfur-containing gas comprising hydrogen sulfide by contacting the spent absorbent with a hydrocarbon in the presence of a hydrocarbon cracking catalyst at a temperature from about 375° to about 900° C. The absorbent can be circulated through a fluidized catalytic cracking process together with the hydrocarbon cracking catalyst to reduce sulfur oxide emissions from the regeneration zone.
Inventors
- 👤 Ralph J. Bertolacini
- 👤 Eugene H. Hirschberg
- 👤 Frank Modica
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:50
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J29/08; B01J29/085; B01J29/088; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B01J23/00; B01J23/10
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
128 words
A composition of matter prepared by the steps comprising: (a) impregnating a particulate solid cracking catalyst comprising from about 0.5 to about 50 weight percent of a crystalline aluminosilicate zeolite distributed throughout a porous matrix with at least one rare earth metal compound selected from the group consisting of the compounds of lanthanum, cerium, praseodymium, samarium and dysprosium, wherein said matrix comprises from about 70 to about 100 weight percent alumina, and wherein the amount of said rare earth metal compound or compounds is sufficient to add from about 0.004 to about 10 weight percent of rare earth metal or metals, calculated as the metal or metals, to said particulate catalyst; and (b) calcining said impregnated particulate catalyst at a temperature between about 200° and about 820° C.
Claim 2
Dependent Claim
128 words
A composition of matter prepared by the steps comprising: (a) impregnating a particulate solid cracking catalyst comprising from about 0.5 to about 50 weight percent of a crystalline aluminosilicate zeolite distributed throughout a porous matrix with at least one rare earth metal compound selected from the group consisting of the compounds of lanthanum, cerium, praseodymium, samarium and dysprosium, wherein said matrix comprises from about 70 to about 100 weight percent alumina, and wherein the amount of said rare earth metal compound or compounds is sufficient to add from about 0.004 to about 10 weight percent of rare earth metal or metals, calculated as the metal or metals, to said particulate catalyst; and (b) calcining said impregnated particulate catalyst at a temperature between about 200° and about 820° C.
Claim 3
Dependent Claim
46 words
The composition as set forth in claim 1 wherein the amount of said rare earth metal compound or compounds is sufficient to add from about 0.1 to about 5 weight percent rare earth metal or metals, calculated as the metal or metals, to the catalyst particles.
Claim 4
Dependent Claim
15 words
The composition as set forth in claim 1 wherein said rare earth metal comprises lanthanum.
Claim 5
Dependent Claim
15 words
The composition as set forth in claim 1 wherein said rare earth metal comprises cerium.
Claim 6
Dependent Claim
19 words
The composition as set forth in claim 4 wherein a ceric compound is used to impregnate said cracking catalyst.
Claim 7
Dependent Claim
16 words
The composition as set forth in claim 5 wherein said ceric compound is ceric ammonium nitrate.
Claim 8
Dependent Claim
163 words
A composition of matter comprising a particulate physical mixture of: (a) a particulate solid cracking catalyst for cracking hydrocarbons comprising a crystalline aluminosilicate zeolite distributed throughout a porous matrix wherein said matrix comprises from about 70 to about 100 weight percent of alumina; and (b) a particulate solid other than said cracking catalyst comprising at least one inorganic oxide selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium and calcium in association with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium, and dysprosium, wherein the particulate solid other than cracking catalyst contains at least about 40 weight percent of said inorganic oxide or oxides, the ratio by weight of inorganic oxide or oxides to rare earth metal or metals is from about 1.0 to about 1,000, and said particulate solid other than cracking catalyst comprises from about 0.1 to about 50 weight percent of said particulate physical mixture.
Claim 9
Dependent Claim
163 words
A composition of matter comprising a particulate physical mixture of: (a) a particulate solid cracking catalyst for cracking hydrocarbons comprising a crystalline aluminosilicate zeolite distributed throughout a porous matrix wherein said matrix comprises from about 70 to about 100 weight percent of alumina; and (b) a particulate solid other than said cracking catalyst comprising at least one inorganic oxide selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium and calcium in association with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium, and dysprosium, wherein the particulate solid other than cracking catalyst contains at least about 40 weight percent of said inorganic oxide or oxides, the ratio by weight of inorganic oxide or oxides to rare earth metal or metals is from about 1.0 to about 1,000, and said particulate solid other than cracking catalyst comprises from about 0.1 to about 50 weight percent of said particulate physical mixture.
Claim 10
Dependent Claim
15 words
The composition as set forth in claim 7 wherein said rare earth metal comprises lanthanum.
Claim 11
Dependent Claim
15 words
The composition as set forth in claim 7 wherein said rare earth metal comprises cerium.
Claim 12
Dependent Claim
14 words
The composition as set forth in claim 7 wherein said inorganic oxide comprises alumina.
Claim 13
Dependent Claim
13 words
The composition as set forth in claim 10 wherein said alumina comprises gamma-alumina.
Claim 14
Dependent Claim
21 words
The composition as set forth in claim 7 wherein said inorganic oxide comprises alumina and said rare earth metal comprises cerium.
Claim 15
Dependent Claim
36 words
The composition as set forth in claim 7 wherein said inorganic oxide comprises a mixture of alumina and magnesium oxide, and the weight ratio of alumina to magnesium oxide is from about 2.0 to about 100.
Claim 16
Dependent Claim
31 words
The composition as set forth in claim 7 wherein the ratio by weight of inorganic oxide or oxides to rare earth metal or metals is from about 2.0 to about 100.
Claim 17
Dependent Claim
31 words
The composition as set forth in claim 7 wherein the ratio by weight of inorganic oxide or oxides to rare earth metal or metals is from about 3.0 to about 20.
Claim 18
Dependent Claim
30 words
The composition as set forth in claim 7 wherein the particulate solid other than cracking catalyst comprises from about 0.5 to about 10 weight percent of the particulate physical mixture.
Claim 19
Dependent Claim
169 words
A composition of matter comprising a particulate physical mixture of: (a) a particulate solid cracking catalyst for cracking hydrocarbons comprising a crystalline aluminosilicate zeolite distributed throughout a porous matrix, wherein said matrix comprises from about 70 to about 100 weight percent of alumina, and the amount of said catalyst is from about 50 to about 99.9 weight percent of the particulate physical mixture; (b) a first particulate solid other than said cracking catalyst comprising at least about 50 weight percent of one or more inorganic oxides selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium and calcium; and (c) a second particulate solid other than said cracking catalyst comprising at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium and dysprosium, wherein the ratio by weight of the inorganic oxide or oxides of said first particulate solid to the rare earth metal or metals of said second particulate solid is from about 1.0 to about 1,000.
Claim 20
Dependent Claim
169 words
A composition of matter comprising a particulate physical mixture of: (a) a particulate solid cracking catalyst for cracking hydrocarbons comprising a crystalline aluminosilicate zeolite distributed throughout a porous matrix, wherein said matrix comprises from about 70 to about 100 weight percent of alumina, and the amount of said catalyst is from about 50 to about 99.9 weight percent of the particulate physical mixture; (b) a first particulate solid other than said cracking catalyst comprising at least about 50 weight percent of one or more inorganic oxides selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium and calcium; and (c) a second particulate solid other than said cracking catalyst comprising at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium and dysprosium, wherein the ratio by weight of the inorganic oxide or oxides of said first particulate solid to the rare earth metal or metals of said second particulate solid is from about 1.0 to about 1,000.
Claim 21
Dependent Claim
41 words
The composition as set forth in claim 17 wherein said first particulate solid other than cracking catalyst comprises a mixture of alumina and magnesium oxide, and the weight ratio of alumina to magnesium oxide is from about 2.0 to about 100.
Claim 22
Dependent Claim
19 words
The composition as set forth in claim 17 wherein said first particulate solid other than cracking catalyst comprises alumina.
Claim 23
Dependent Claim
13 words
The composition as set forth in claim 19 wherein said alumina is gamma-alumina.
Claim 24
Dependent Claim
15 words
The composition as set forth in claim 17 wherein said rare earth metal comprises lanthanum.
Claim 25
Dependent Claim
15 words
The composition as set forth in claim 17 wherein said rare earth metal comprises cerium.
Claim 26
Dependent Claim
20 words
The composition as set forth in claim 17 wherein said second particulate solid other than cracking catalyst comprises cerium oxide.
Claim 27
Dependent Claim
20 words
The composition as set forth in claim 17 wherein said second particulate solid other than cracking catalyst comprises lanthanum oxide.
Claim 28
Dependent Claim
26 words
The composition as set forth in claim 17 wherein said first particulate solid other than cracking catalyst comprises alumina and said rare earth metal comprises cerium.
Claim 29
Dependent Claim
43 words
The composition as set forth in claim 17 wherein the ratio by weight of the inorganic oxide or oxides of said first particulate solid to the rare earth metal or metals of said second particulate solid is from about 2.0 to about 100.
Claim 30
Dependent Claim
26 words
The composition as set forth in claim 17 wherein said cracking catalyst comprises from about 90 to about 99.5 weight percent of the particulate physical mixture.
Claim 31
Dependent Claim
26 words
The composition as set forth in claim 7 wherein said cracking catalyst comprises from about 0.5 to about 50 weight percent of a crystalline aluminosilicate zeolite.
Claim 32
Dependent Claim
26 words
The composition as set forth in claim 17 wherein said cracking catalyst comprises from about 0.5 to about 50 weight percent of a crystalline aluminosilicate zeolite.
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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |