GB164734A - Improvements in drying or eliminating water vapours and nitric or nitrous acid vapours from gases derived from oxidized ammonia - Google Patents
Improvements in drying or eliminating water vapours and nitric or nitrous acid vapours from gases derived from oxidized ammoniaInfo
- Publication number
- GB164734A GB164734A GB16248/21A GB1624821A GB164734A GB 164734 A GB164734 A GB 164734A GB 16248/21 A GB16248/21 A GB 16248/21A GB 1624821 A GB1624821 A GB 1624821A GB 164734 A GB164734 A GB 164734A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gases
- vapours
- nitrogen oxides
- nitric acid
- nitric
- 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
- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
Water is removed from the gases produced by the oxidation of ammonia, to enable them to be condensed without injury to the refrigerating apparatus, by spraying with liquid oxides in packed towers of known type. Preferably, the gases are first washed with nitric acid of less than 68 per cent strength to secure partial dehydration. Using gases containing from 1 to 10 per cent of nitrogen oxides and liquid nitrogen oxides, both at 15 DEG C, and with a preliminary washing with nitric acid of 15 to 50 per cent strength, the issuing gases are cooled to 0.2 to 0.20 DEG C. owing to the loss of latent heat of the evaporated nitrogen oxides. The gases being practically free from water and nitrous and nitric acid vapours at this temperature are then liquefied by cooling for instance to 100 DEG C. in a refrigerating apparatus such as is used for condensing nitrogen oxides obtained by the oxidation of nitrogen. A portion of the liquid nitrogen oxides so obtained is used for treating further quantities of nitrous gases.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT164734X | 1920-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB164734A true GB164734A (en) | 1922-08-03 |
Family
ID=11148897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16248/21A Expired GB164734A (en) | 1920-06-12 | 1921-06-13 | Improvements in drying or eliminating water vapours and nitric or nitrous acid vapours from gases derived from oxidized ammonia |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE364520C (en) |
| FR (1) | FR536597A (en) |
| GB (1) | GB164734A (en) |
-
1921
- 1921-06-09 FR FR536597D patent/FR536597A/en not_active Expired
- 1921-06-11 DE DEO12371D patent/DE364520C/en not_active Expired
- 1921-06-13 GB GB16248/21A patent/GB164734A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE364520C (en) | 1922-11-25 |
| FR536597A (en) | 1922-05-05 |
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