EP0145262A2
Expired / Lapsed
EP
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Method for removing dissolved oxygen from aqueous media
Assignee: Westinghouse Electric Corp
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Filing: 1984-11-07
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Granted: —
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Expires: 2004-11-07
Abstract
Abstract Water for use in steam generation systems, which is contained in a storage tank, is deoxygenated for use in the system by adding hydrogen to a stream of the water and intimately mixing the same, pressurizing the stream to a pressure of 60-150 psig, and contacting the pressurized stream with a catalyst bed of palladium or platinum dispersed on a solid carrier. The hydrogen reacts with the dissolved oxygen in the presence of the catalyst at ambient temperatures, to produce a deoxygenated stream of water containing less than 10 ppb of oxygen. The deoxygenated water can be returned to the storage tank or supplied directly to the steam generation system.
Inventors
- 👤 Sunil Gregory Desilva
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:13
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0005; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; C; C02; C02F; C02F1/00; C02F1/20; C02F1/72; C02F1/725; C23; C23F; C23F11/00; C23F11/08; C23F11/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A method for removing dissolved oxygen from a supply of aqueous medium characterized by discharging a stream of aqueous medium from said supply thereof; injecting hydrogen gas into said discharged stream of aqueous medium; intimately mixing said hydrogen with said aqueous medium; pressurizing the intimately mixed stream to a pressure of between 60-150 psig; and contacting said pressurized, intimately mixed stream, at a temperature of 15-40°C, with an effective amount of palladium or platinum, dispersed on a stable carrier material, for a period of time effective to react the hydrogen and dissolved oxygen to produce a deoxygenated aqueous medium stream having a dissolved oxygen content of below about 10 parts per billion by weight.
Claim 2
Independent Claim
114 words
A method for removing dissolved oxygen from a supply of aqueous medium characterized by discharging a stream of aqueous medium from said supply thereof; injecting hydrogen gas into said discharged stream of aqueous medium; intimately mixing said hydrogen with said aqueous medium; pressurizing the intimately mixed stream to a pressure of between 60-150 psig; and contacting said pressurized, intimately mixed stream, at a temperature of 15-40°C, with an effective amount of palladium or platinum, dispersed on a stable carrier material, for a period of time effective to react the hydrogen and dissolved oxygen to produce a deoxygenated aqueous medium stream having a dissolved oxygen content of below about 10 parts per billion by weight.
Claim 3
Dependent Claim
32 words
A method according to claim 1, characterized in that the supply of aqueous media is contained within a storage tank and the deoxygenated aqueous media stream is returned to said storage tank.
Claim 4
Dependent Claim
23 words
A method according to claim 1 or 2, characterized in that the palladium or platinum is dispersed on a polystyrene-based anion exchange resin.
Claim 5
Dependent Claim
30 words
A method according to claim 1, 2 or 3 characterized in that the hydrogen and aqueous medium are intimately mixed by passage thereof through a column containing solid particulate matter.
Claim 6
Dependent Claim
16 words
A method according to claim 4, characterized in that the solid particulate matter comprises glass beads.
Claim 7
Independent Claim
33 words
A method according to any of claims 1 to 5, characterized in that the contact is sufficient to reduce the dissolved oxygen content of the aqueous medium to about 2 parts per billion.
References Cited (Backward Citations)
No citation records indexed.
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