US4394269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cleaning solution used in nuclear fuel reprocessing
Assignee: United States Department of Energy
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Filing: 1981-05-12
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Granted: 1983-07-19
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Expires: 2001-05-12
Abstract
Abstract A nuclear fuel processing solution containing (1) hydrocarbon diluent, (2) tri-n-butyl phosphate or tri-2-ethylhexyl phosphate, and (3) monobutyl phosphate, dibutyl phosphate, mono-2-ethylhexyl phosphate, di-2-ethylhexyl phosphate, or a complex formed by plutonium, uranium, or a fission product thereof with monobutyl phosphate, dibutyl phosphate, mono-2-ethylhexyl phosphate, or di-2-ethylhexyl phosphate is contacted with silica gel having alkali ions absorbed thereon to remove any one of the degradation products named in section (3) above from said solution.
Inventors
- 👤 Othar K. Tallent
- 👤 Karen E. Dodson
- 👤 James C. Mailen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:31
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A method of processing a solution containing (1) a hydrocarbon diluent, (2) a phosphate selected from the group consisting of tri-n-butyl phosphate and tri-2-ethylhexyl phosphate, and (3) a degradation product selected from the group consisting of (a) monobutyl phosphate, (b) dibutyl phosphate, (c) mono-2-ethylhexyl phosphate, (d) di-2-ethylhexyl phosphate, and (e) a complex of plutonium, uranium, or a fission product thereof with monobutyl phosphate, dibutyl phosphate, mono-2-ethylhexyl phosphate, or di-2-ethylhexyl phosphate, comprising contacting said solution with silica gel having alkali metal ions absorbed thereon.
Claim 2
Independent Claim
83 words
A method of processing a solution containing (1) a hydrocarbon diluent, (2) a phosphate selected from the group consisting of tri-n-butyl phosphate and tri-2-ethylhexyl phosphate, and (3) a degradation product selected from the group consisting of (a) monobutyl phosphate, (b) dibutyl phosphate, (c) mono-2-ethylhexyl phosphate, (d) di-2-ethylhexyl phosphate, and (e) a complex of plutonium, uranium, or a fission product thereof with monobutyl phosphate, dibutyl phosphate, mono-2-ethylhexyl phosphate, or di-2-ethylhexyl phosphate, comprising contacting said solution with silica gel having alkali metal ions absorbed thereon.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein sodium ions are absorbed on said silica gel.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein lithium ions are absorbed on said silica gel.
References Cited (Backward Citations)
US3112275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |