Patent US4298208A successfully refreshed from Google Patents.
Patent US4268399A successfully refreshed from Google Patents.
US4268399A
Expired / Lapsed
US
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Purification of polluted water
Assignee: Phillips Petroleum Co
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Filing: 1979-11-21
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Granted: 1981-05-19
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Expires: 1999-11-21
Abstract
Abstract The purity of organically polluted waters is improved by contacting with a zinc titanate catalyst under oxidizing conditions. In one embodiment, an aqueous stream containing oxidizable organic pollutants is subjected to oxidizing conditions in the presence of a metal promoted zinc titanate catalyst to improve the purity of the aqueous product. In a second embodiment, an aqueous stream containing oxidizable organic pollutants is subjected to oxidizing conditions in the presence of a metal promoted zinc titanate catalyst to convert the water to a potable aqueous product.
Inventors
- 👤 E. O. Box, Jr.
- 👤 Floyd E. Farha, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/06; C; C02; C02F; C02F1/00; C02F1/72; C02F1/725
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
66 words
A process for the purification of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate under oxidative conditions including a temperature and a ratio of water to oxygen sufficient to convert said organic materials to innocuous materials and said aqueous stream into a potable aqueous product.
Claim 2
Dependent Claim
66 words
A process for the purification of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate under oxidative conditions including a temperature and a ratio of water to oxygen sufficient to convert said organic materials to innocuous materials and said aqueous stream into a potable aqueous product.
Claim 3
Dependent Claim
17 words
A process according to claim 1 wherein said aqueous stream is produced in an oxidative dehydrogenation process.
Claim 4
Dependent Claim
22 words
A process according to claim 1 wherein said contacting is effected at a temperature in the range of 350°-1200° F. (177°-649° C.).
Claim 5
Dependent Claim
26 words
A process according to claim 1 wherein said contacting is effected at a molar ratio of water to oxygen in the range of 10:1 to 200:1.
Claim 6
Dependent Claim
12 words
A process according to claim 1 wherein said oxygen-containing gas is air.
Claim 7
Dependent Claim
12 words
A process according to claim 1 wherein said catalyst is zinc orthotitanate.
Claim 8
Dependent Claim
50 words
A process in accordance with claim 1 wherein said catalyst is promoted with a first promoter at least one member of which is selected from the group consisting of the metals of Group IB of the Periodic Table, the metals of Group VIIB of the Periodic Table, and compounds thereof.
Claim 9
Dependent Claim
17 words
A process in accordance with claim 7 wherein said first promoter is a mixture of copper manganese.
Claim 10
Dependent Claim
36 words
A process in accordance with claim 7 wherein said catalyst is promoted with a second promoter at least one member of which is selected from the group consisting of the rare earth metals and compounds thereof.
Claim 11
Dependent Claim
24 words
A process in accordance with claim 9 wherein said first promoter is a mixture of copper and manganese and said second promoter is lanthanum.
Claim 12
Dependent Claim
39 words
A process in accordance with claim 9 wherein the concentration of said first pormoter and said second promoter is in the range of 0.05-20 weight percent calculated as the metal and based upon the weight of the zinc titanate.
Claim 13
Dependent Claim
39 words
A process in accordance with claim 9 wherein the concentration of said first promoter and said second promoter is in the range of 0.1-10 weight percent calculated as the metal and based upon the weight of the zinc titanate.
Claim 14
Dependent Claim
97 words
A process according to claim 1 wherein the total carbon cntent of the aqueous stream is within the range of about 10 to about 100,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the liquid phase, at a temperature within the range of from about 350° F. to about 550° F. (177°-288° C.) at a water to oxygen molar ratio within the range of about 10:1 to about 200:1 and at a liquid hourly space velocity (LHSV) within the range of from about 0.1 to about 10.
Claim 15
Dependent Claim
97 words
A process according to claim 1 wherein the total carbon content of the aqueous stream is within the range of about 25 to about 10,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the liquid phase, at a temperature within the range of from about 400° F. to about 500° F. (204°-260° C.), at a water to oxygen molar ratio within the range of about 10:1 to about 200:1 and at a liquid hourly space velocity (LHSV) within the range of from about 2 to about 5.
Claim 16
Dependent Claim
94 words
A process according to claim 1 wherein the total carbon content of the aqueous solution is within the range of about 10 to about 100,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the vapor phase at a temperature within the range of from about 600° to about 1200° F. (316°-649° C.), at a water-to-oxygen mol ratio within the range of about 10:1 to about 200:1 and at a gas hourly space velocity (GHSV) within the range of from about 0.1 to about 50.
Claim 17
Dependent Claim
94 words
A process according to claim 1 wherein the total carbon content of the aqueous stream is within the range of about 25 to about 10,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the vapor phase at a temperature within the range of from about 900° to about 1000° F. (482°-538° C.), at a water-to-oxygen mol ratio within the range of about 10:1 to about 200:1 and at a gas hourly space velocity (GHSV) within the range of from about 20 to about 40.
Claim 18
Dependent Claim
93 words
A process for the purification of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate wherein said process is carried out at a temperature within the range of about 350° to about 1200° F. and with a water-to-oxygen mol ratio within the range of 10:1 to 200:1 so that at least a portion of said organic materials are converted to innocuous materials and said aqueous stream is converted into a potable aqueous product.
Claim 19
Dependent Claim
93 words
A process for the purification of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate wherein said process is carried out at a temperature within the range of about 350° to about 1200° F. and with a water-to-oxygen mol ratio within the range of 10:1 to 200:1 so that at least a portion of said organic materials are converted to innocuous materials and said aqueous stream is converted into a potable aqueous product.
Claim 20
Dependent Claim
73 words
A process for improving the purity of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate under oxidative conditions including a temperature and a ratio of water to oxygen sufficient to convert at least a portion of said organic materials to innocuous materials so as to improve the purity of said aqueous stream.
Claim 21
Dependent Claim
73 words
A process for improving the purity of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate under oxidative conditions including a temperature and a ratio of water to oxygen sufficient to convert at least a portion of said organic materials to innocuous materials so as to improve the purity of said aqueous stream.
Claim 22
Dependent Claim
17 words
A process according to claim 18 wherein said aqueous stream is produced in an oxidative dehydrogenation process.
Claim 23
Dependent Claim
22 words
A process according to claim 18 wherein said contacting is effected at a temperature in the range of 350°-1200° F. (177°-649° C.).
Claim 24
Dependent Claim
26 words
A process according to claim 18 wherein said contacting is effected at a molar ratio of water to oxygen in the range of 10:1 to 200:1.
Claim 25
Dependent Claim
12 words
A process according to claim 18 wherein said oxygen-containing gas is air.
Claim 26
Dependent Claim
12 words
A process according to claim 18 wherein said catalyst is zince orthotitanate.
Claim 27
Dependent Claim
50 words
A process in accordance with claim 18 wherein said catalyst is promoted with a first promoter at least one member of which is selected from the group consisting of the metals of Group IB, of the Periodic Table, the metals of Group VIIB, of the Periodic Table, and compounds thereof.
Claim 28
Dependent Claim
18 words
A process in accordance with claim 24 wherein said first promoter is a mixture of copper and manganese.
Claim 29
Dependent Claim
36 words
A process in accordance with claim 24 wherein said catalyst is promoted with a second promoter at least one member of which is selected from the group consisting of the rare earth metals and compounds thereof.
Claim 30
Dependent Claim
24 words
A process in accordance with claims 26 wherein said first promoter is a mixture of copper and manganese and said second promoter is lanthanum.
Claim 31
Dependent Claim
39 words
A process in accordance with claim 26 wherein the concentration of said first promoter and said second promoter is in the range of 0.05-20 weight percent calculated as the metal and based upon the weight of the zinc titante.
Claim 32
Dependent Claim
39 words
A process in accordance with claim 26 wherein the concentration of said first promoter and said second promoter is in the range of 0.1-10 weight percent calculated as the metal and based upon the weight of the zinc titanate.
Claim 33
Dependent Claim
97 words
A process according to claim 18 wherein the total carbon content of the aqueous stream is within the range of about 10 to about 100,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the liquid phase, at a temperature within the range of from about 350° F. to about 550° F. (177°-288° C.) at a water to oxygen molar ratio within the range of about 10:1 to about 200:1 and at a liquid hourly space velocity (LHSV) within the range of from about 0.1 to about 10.
Claim 34
Dependent Claim
97 words
A process according to claim 18 wherein the total carbon content of the aqueous stream is within the range of about 25 to about 10,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the liquid phase, at a temperature within the range of from about 400° F. to about 500° F. (204°-260° C), at a water to oxygen molar ratio within the range of about 10:1 to about 200:1 and at a liquid hourly space velocity (LHSV) within the range of from about 2 to about 5.
Claim 35
Dependent Claim
94 words
A process according to claim 18 wherein the total carbon content of the aqueous solution is within the range of about 10 to about 100,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the vapor phase at a temperature within the range of from about 600° to about 1200° F. (316°-649° C.), at a water-to-oxygen mol ratio within the range of about 10:1 to about 200:1 and at a gas hourly space velocity (GHSV) within the range of from about 0.1 to about 50.
Claim 36
Dependent Claim
94 words
A process according to claim 18 wherein the total carbon content of the aqueous stream is within the range of about 25 to about 10,000 parts per million and wherein said aqueous stream is contacted with said oxygen-containing gas and the catalyst in the vapor phase at a temperature within the range of from about 900° to about 1000° F. (482°-538° C), at a water-to-oxygen mol ratio within the range of about 10:1 to about 200:1 and at a gas hourly space velocity (GHSV) within the range of from about 20 to about 40.
Claim 37
Dependent Claim
93 words
A process for improving the purity of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate, wherein said process is carried out at a temperature within the range of about 350° to about 1200° F. and with a water-to-oxygen mol ratio within the range of 10:1 to 200:1 so that at least a portion of said organic materials are converted to innocuous materials so as to improve the purity of said aqueous stream.
Claim 38
Dependent Claim
93 words
A process for improving the purity of an aqueous stream containing dissolved and/or suspended organic materials therein, which process comprises contacting said aqueous stream with an oxygen-containing gas and a catalyst consisting essentially of zinc titanate, wherein said process is carried out at a temperature within the range of about 350° to about 1200° F. and with a water-to-oxygen mol ratio within the range of 10:1 to 200:1 so that at least a portion of said organic materials are converted to innocuous materials so as to improve the purity of said aqueous stream.
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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |