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 |
|---|---|
| FR536597A (en) | 1922-05-05 |
| DE364520C (en) | 1922-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB623446A (en) | Improvements in and relating to processes and apparatus for the regeneration of spent iron and steel acid pickle liquors | |
| GB164734A (en) | Improvements in drying or eliminating water vapours and nitric or nitrous acid vapours from gases derived from oxidized ammonia | |
| GB289412A (en) | Process for absorbing oxides of nitrogen | |
| US2730431A (en) | Manufacture of sulfuric acid | |
| GB456518A (en) | Improvements in or relating to the production of highly concentrated nitric acid | |
| GB172979A (en) | Improvements in the manufacture of nitric acid from the gases obtained through the oxidation of ammonia | |
| US1772122A (en) | Process for the high concentration of nitric acid | |
| US1895492A (en) | Method of and apparatus for concentrating nitric acid | |
| GB455734A (en) | Process for the absorption, in highly-concentrated nitric acid, of nitrous gases formed by the combustion of ammonia | |
| GB316684A (en) | Improvements in and relating to the concentration of nitric acid | |
| GB742052A (en) | Improvements relating to the washing and cooling of gases containing sulphur dioxide | |
| US1353448A (en) | Concentration of sulfuric acid | |
| SU50656A1 (en) | Acid Denitration Method | |
| GB502155A (en) | Method of oxidation of ammonia | |
| US2060183A (en) | Process for desiccation of gases contained in nitrous fumes | |
| SU48244A1 (en) | Method of absorption of sulfur dioxide | |
| SU20646A1 (en) | Sulfuric acid concentration method | |
| US1338418A (en) | Process of concentrating nitric and sulfuric acid | |
| GB413828A (en) | Process for the absorption and recovery of oxides of nitrogen | |
| SU99235A1 (en) | The method of drying, cleaning and recycling ammonia gas used in the preparation of chemical products by the contact method | |
| US1481907A (en) | Process for the oxidation of nitrogen in electric furnaces | |
| GB869062A (en) | The manufacture of nitric acid | |
| GB744708A (en) | Process for recovering sulphuric acid and iron oxide from iron sulphate | |
| SU48247A1 (en) | Method for producing sulfuric acid by oxidizing sulfur dioxide with nitrogen oxides | |
| GB667901A (en) | Improved process for the intensive manufacture of sulphuric acid |