GB1481771A - Process for the continuous manufacture of nitrous oxide - Google Patents
Process for the continuous manufacture of nitrous oxideInfo
- Publication number
- GB1481771A GB1481771A GB2556/75A GB255675A GB1481771A GB 1481771 A GB1481771 A GB 1481771A GB 2556/75 A GB2556/75 A GB 2556/75A GB 255675 A GB255675 A GB 255675A GB 1481771 A GB1481771 A GB 1481771A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iii
- nitrous oxide
- fractionation
- hno
- hcl
- 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.)
- Expired
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
- C01B21/34—Nitrogen trioxide (N2O3)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
1481771 Nitrous oxide SOUTH AFRICAN INVENTIONS DEVELOPMENT CORP 21 Jan 1975 [30 Jan 1974] 2556/75 Heading C1A Nitrous oxide is prepared by the decomposition of NH 4 <SP>+</SP> and NO 3 <SP>-</SP> ions in a strongly acid aqueous medium in a continuous process comprising the steps (i) supplying sources of NH 4 + and NO 3 <SP>-</SP> ions to the reactor, (ii) maintaining the reaction mixture at the boiling point, which is above 80‹ C., (iii) distilling out the water formed in the reaction (which also contains N 2 O, HNO 3 and HCl) into a fractionation space within which reflux conditions prevail, (iv) producing an overhead condensate consisting essentially of water from the fractionation system of (iii), part of which is removed and discarded, and part of which is reformed to the fractionation space so as to maintain the reflux, (v) recovering HCl and HNO 3 as aqueous solutions as bottoms liquor in the fractionation system of (iii) and (vi), removing overhead from the fractionation system of (iii) the nitrous oxide in a form essentially depleted of HNO 3 and HCl.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA00740617A ZA74617B (en) | 1974-01-30 | 1974-01-30 | Process for the continuous manufacture of nitrous oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1481771A true GB1481771A (en) | 1977-08-03 |
Family
ID=25567325
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2556/75A Expired GB1481771A (en) | 1974-01-30 | 1975-01-21 | Process for the continuous manufacture of nitrous oxide |
| GB19562/76A Expired GB1481772A (en) | 1974-01-30 | 1975-01-21 | Process for the continuous manufacture of nitrous oxide |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19562/76A Expired GB1481772A (en) | 1974-01-30 | 1975-01-21 | Process for the continuous manufacture of nitrous oxide |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2259052B1 (en) |
| GB (2) | GB1481771A (en) |
| ZA (1) | ZA74617B (en) |
-
1974
- 1974-01-30 ZA ZA00740617A patent/ZA74617B/en unknown
-
1975
- 1975-01-21 GB GB2556/75A patent/GB1481771A/en not_active Expired
- 1975-01-21 GB GB19562/76A patent/GB1481772A/en not_active Expired
- 1975-01-28 FR FR7502542A patent/FR2259052B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2259052B1 (en) | 1978-07-13 |
| GB1481772A (en) | 1977-08-03 |
| ZA74617B (en) | 1975-10-29 |
| FR2259052A1 (en) | 1975-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |