Patent US3862296A successfully refreshed from Google Patents.
US3862296A
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Conversion process for waste nitrogen-containing compounds
Assignee: General Electric Co
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Filing: 1972-02-09
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Granted: 1975-01-21
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Expires: 1992-02-09
Abstract
Abstract This presents a process for converting nitrogen-containing compounds in which at least a portion of the nitrogen has a positive valence to molecular nitrogen by calcining the nitrogencontaining compounds in a fluidized bed in the presence of a reducing agent selected from the group consisting of ammonia, ammonium compounds and mixtures thereof.
Inventors
- 👤 James M Dotson
- 👤 Thomas E Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:04
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/02; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/903
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
57 words
A METHOD OF CONVERTING THE NITROGEN PORTION OF A NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID, NITRONS ACID, NITRITE SALTS, NITRATE SALTS AND FI FISSIONS PRODUCT NITRATES TO GASEOUS NITROGEN COMPRISING THE STEP OF CALCINING THE NITROGEN-CONTAINING COMPOUND AND A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA, AMMONIUM COMPOUNDS AND MIXTURES THEREOF.
Claim 2
Independent Claim
57 words
A METHOD OF CONVERTING THE NITROGEN PORTION OF A NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID, NITRONS ACID, NITRITE SALTS, NITRATE SALTS AND FI FISSIONS PRODUCT NITRATES TO GASEOUS NITROGEN COMPRISING THE STEP OF CALCINING THE NITROGEN-CONTAINING COMPOUND AND A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA, AMMONIUM COMPOUNDS AND MIXTURES THEREOF.
Claim 3
Dependent Claim
17 words
A method according to claim 1 in which a molar excess of the reducing agent is employed.
Claim 4
Dependent Claim
22 words
A method according to claim 1 in which the nitrogen-containing compound is dispersed in water and is calcined in an atomized form.
Claim 5
Dependent Claim
15 words
A method according to claim 1 in which the nitrogen-containing compound is a metallic nitrate.
Claim 6
Dependent Claim
15 words
A method according to claim 1 in which the nitrogen-containing compound is a metallic nitrite.
Claim 7
Dependent Claim
14 words
A method according to claim 1 in which the nitrogen-containing compound is nitric acid.
Claim 8
Dependent Claim
13 words
A method according to claim 1 in which the reducing agent is ammonia.
Claim 9
Dependent Claim
14 words
A method according to claim 1 in which the reducing agent is ammonium hydroxide.
Claim 10
Dependent Claim
24 words
A method according to claim 1 in which the temperature of the calcining step is in the range of about 300*C to about 600*C.
Claim 11
Dependent Claim
17 words
A method according to claim 1 in which the nitrogen-containing compound is dispersed in an aqueous solution.
Claim 12
Dependent Claim
49 words
A method according to claim 1 in which the nitrogen-containing compound is plutonium nitrate in an aqueous solution and the water vapor is condensed and passed through a distillation step to insure removal of plutonium and the resulting gases are passed through a scrubber to insure removal of plutonium.
Claim 13
Independent Claim
75 words
A method of converting liquid waste nitrogen-containing compounds selected from the group consisting of nitric acid, nitrous acid, nitrite salts, nitrate salts and fission product nitrates to molecular nitrogen comprising the steps of (a) establishing a heated bed of inert particles fluidized by a gaseous medium and (b) introducing the nitrogen-containing compounds to the fluidized bed in the presence of a reducing agent selected from the group consisting of ammonia, ammonium compounds and mixtures thereof.
Claim 14
Independent Claim
75 words
A method of converting liquid waste nitrogen-containing compounds selected from the group consisting of nitric acid, nitrous acid, nitrite salts, nitrate salts and fission product nitrates to molecular nitrogen comprising the steps of (a) establishing a heated bed of inert particles fluidized by a gaseous medium and (b) introducing the nitrogen-containing compounds to the fluidized bed in the presence of a reducing agent selected from the group consisting of ammonia, ammonium compounds and mixtures thereof.
Claim 15
Dependent Claim
17 words
A method according to claim 12 in which a molar excess of the reducing agent is employed.
Claim 16
Dependent Claim
17 words
A method according to claim 12 in which the nitrogen-containing compounds are calcined in an atomized form.
Claim 17
Dependent Claim
14 words
A method according to claim 12 in which the nitrogen-containing compounds are metallic nitrates.
Claim 18
Dependent Claim
14 words
A method according to claim 12 in which the nitrogen-containing compounds are metallic nitrites.
Claim 19
Dependent Claim
14 words
A method according to claim 12 in which the nitrogen-containing compounds include nitric acid.
Claim 20
Dependent Claim
13 words
A method according to claim 12 in which the reducing agent is ammonia.
Claim 21
Dependent Claim
14 words
A method according to claim 12 in which the reducing agent is ammonium hydroxide.
Claim 22
Dependent Claim
27 words
A method according to claim 12 in which the temperature of the heated bed of inert particles is in the range of about 300*C to about 600*C.
Claim 23
Dependent Claim
17 words
A method according to claim 12 in which the nitrogen-containing compound is dispersed in an aqueous solution.
Claim 24
Dependent Claim
18 words
A method according to claim 12 in which the bed of inert particles is comprised of silicon dioxide.
Claim 25
Independent Claim
67 words
A method of converting a nitrogen-containing compound of plutonium to gaseous nitrogen and a solid compound of plutonium comprising the steps of (a) establishing a heated bed of inert particles fluidized by a gaseous medium, (b) introducing the nitrogen-containing compound to the fluidized bed in an atomized form in the presence of a reducing agent selected from the group consisting of ammonia, ammonium compounds and mixtures thereof.
Claim 26
Independent Claim
67 words
A method of converting a nitrogen-containing compound of plutonium to gaseous nitrogen and a solid compound of plutonium comprising the steps of (a) establishing a heated bed of inert particles fluidized by a gaseous medium, (b) introducing the nitrogen-containing compound to the fluidized bed in an atomized form in the presence of a reducing agent selected from the group consisting of ammonia, ammonium compounds and mixtures thereof.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |