FR2367020A1 - Procede de preparation de nitrite de sodium a partir de courants gazeux contenant des gaz nitreux - Google Patents
Procede de preparation de nitrite de sodium a partir de courants gazeux contenant des gaz nitreuxInfo
- Publication number
- FR2367020A1 FR2367020A1 FR7730132A FR7730132A FR2367020A1 FR 2367020 A1 FR2367020 A1 FR 2367020A1 FR 7730132 A FR7730132 A FR 7730132A FR 7730132 A FR7730132 A FR 7730132A FR 2367020 A1 FR2367020 A1 FR 2367020A1
- Authority
- FR
- France
- Prior art keywords
- sodium nitrite
- gases
- moles
- nitrous gases
- preparing sodium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/50—Nitrous acid; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
L'invention concerne un procédé de préparation de solutions aqueuses de nitrite de sodium 10 avec élimination simultanée de NO et/ou de NO2 des gaz par contact avec des solutions aqueuses basiques de nitrite de sodium introduites, avec formation ultérieure de nitrite de sodium, caractérisé en ce qu'on mélange vigoureusement un gaz contenant du NO ou un mélange gazeux contenant du NO et du NO 2 1 avec des gaz contenant de l'oxygène 5 et une solution aqueuse de nitrite de sodium contenant un hydroxyde alcalin, en faisant réagir dans la solution contenant du nitrite de sodium A moles de NO avec B moles de NO2 et C moles de O2 , dans un rapport stoechiométrique tel que l'on ait B < A et C > A-B/4. Ce procédé peut être appliqué à la réutilisation de gaz nitreux (NO/NO2 ) provenant de gaz résiduaires pour préparer du nitrite de sodium.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762645019 DE2645019A1 (de) | 1976-10-06 | 1976-10-06 | Verfahren zur herstellung von natriumnitrit aus nitrosehaltigen gasstroemen |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2367020A1 true FR2367020A1 (fr) | 1978-05-05 |
FR2367020B1 FR2367020B1 (fr) | 1983-01-07 |
Family
ID=5989774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7730132A Granted FR2367020A1 (fr) | 1976-10-06 | 1977-10-06 | Procede de preparation de nitrite de sodium a partir de courants gazeux contenant des gaz nitreux |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5345696A (fr) |
BE (1) | BE859426A (fr) |
DE (1) | DE2645019A1 (fr) |
FR (1) | FR2367020A1 (fr) |
GB (1) | GB1537954A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101337662B (zh) * | 2008-08-08 | 2010-06-02 | 贾令春 | 一种直接结晶法生产亚硝酸钠的工艺 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3125616C2 (de) * | 1980-07-05 | 1994-05-11 | Basf Ag | Verfahren zur Herstellung von festen Alkalinitriten |
JPH03125347U (fr) * | 1990-03-29 | 1991-12-18 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE394498C (de) * | 1922-11-17 | 1924-04-24 | Nitrum Akt Ges | Herstellung von Natriumnitrit |
US2467274A (en) * | 1945-05-23 | 1949-04-12 | Blaw Knox Co | Process and apparatus for recovering in the form of alkali metal salts the oxides of nitrogen from gases containing the same |
FR1011048A (fr) * | 1948-11-27 | 1952-06-18 | Ruhrchemie Ag | Procédé pour l'absorption en milieu alcalin des gaz restants contenant des produits nitreux |
DE886297C (de) * | 1951-05-12 | 1953-08-13 | Hoechst Ag | Verfahren und Vorrichtung zur Herstellung von nitratfreiem Alkalinitrit |
DE2116016A1 (de) * | 1970-04-01 | 1971-10-21 | E.I. Du Pont De Nemours And Co., Wilmington, Del. (V.St.A.) | Nitritherstellung |
DE2048492A1 (en) * | 1970-10-02 | 1972-04-06 | Bayer | Nitrous oxides reduction - effected thermally by complete heating of spent air contg them |
-
1976
- 1976-10-06 DE DE19762645019 patent/DE2645019A1/de not_active Ceased
-
1977
- 1977-10-04 GB GB4119677A patent/GB1537954A/en not_active Expired
- 1977-10-06 BE BE2056319A patent/BE859426A/fr unknown
- 1977-10-06 FR FR7730132A patent/FR2367020A1/fr active Granted
- 1977-10-06 JP JP11953377A patent/JPS5345696A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE394498C (de) * | 1922-11-17 | 1924-04-24 | Nitrum Akt Ges | Herstellung von Natriumnitrit |
US2467274A (en) * | 1945-05-23 | 1949-04-12 | Blaw Knox Co | Process and apparatus for recovering in the form of alkali metal salts the oxides of nitrogen from gases containing the same |
FR1011048A (fr) * | 1948-11-27 | 1952-06-18 | Ruhrchemie Ag | Procédé pour l'absorption en milieu alcalin des gaz restants contenant des produits nitreux |
DE886297C (de) * | 1951-05-12 | 1953-08-13 | Hoechst Ag | Verfahren und Vorrichtung zur Herstellung von nitratfreiem Alkalinitrit |
DE2116016A1 (de) * | 1970-04-01 | 1971-10-21 | E.I. Du Pont De Nemours And Co., Wilmington, Del. (V.St.A.) | Nitritherstellung |
DE2048492A1 (en) * | 1970-10-02 | 1972-04-06 | Bayer | Nitrous oxides reduction - effected thermally by complete heating of spent air contg them |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101337662B (zh) * | 2008-08-08 | 2010-06-02 | 贾令春 | 一种直接结晶法生产亚硝酸钠的工艺 |
Also Published As
Publication number | Publication date |
---|---|
FR2367020B1 (fr) | 1983-01-07 |
JPS5345696A (en) | 1978-04-24 |
BE859426A (fr) | 1978-04-06 |
DE2645019A1 (de) | 1978-04-13 |
GB1537954A (en) | 1979-01-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |