GB376583A - Improved process of and apparatus for the concentration of nitric acid - Google Patents
Improved process of and apparatus for the concentration of nitric acidInfo
- Publication number
- GB376583A GB376583A GB29144/31A GB2914431A GB376583A GB 376583 A GB376583 A GB 376583A GB 29144/31 A GB29144/31 A GB 29144/31A GB 2914431 A GB2914431 A GB 2914431A GB 376583 A GB376583 A GB 376583A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- nitric acid
- concentration
- sulphuric acid
- column
- 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
- C01B21/38—Nitric acid
- C01B21/44—Concentration
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
<PICT:0376583/III/1> In a process for the concentration of nitric acid by distillation with steam in the presence of sulphuric acid as a dehydrating agent, the residuary sulphuric acid is reconcentrated in stages by circulating a hot fluid therethrough and the steam evolved from one stage is passed through a superheater also heated by the fluid and then used for the concentration of the nitric acid. Dilute nitric acid is introduced into a column 1 through a pipe 2 and concentrated sulphuric acid through a pipe 3, and the concentrated nitric acid vapours passing off through a pipe 4 are condensed in a condenser 5 and stored in receivers 6. The diluted sulphuric acid leaves the column 1 through a pipe 8 and passes in succession through evaporators 9, 9<1> where the water is evaporated off by hot oil circulated through pipes 14, 14<1> from a boiler 13. The steam evolved from the evaporator 9 is passed through a superheater 10 also heated by the hot oil and then enters the column 1 through a pipe 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR720770T | 1930-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB376583A true GB376583A (en) | 1932-07-14 |
Family
ID=9094677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29144/31A Expired GB376583A (en) | 1930-11-04 | 1931-10-20 | Improved process of and apparatus for the concentration of nitric acid |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE383470A (en) |
| FR (1) | FR720770A (en) |
| GB (1) | GB376583A (en) |
| NL (1) | NL35821C (en) |
-
0
- BE BE383470D patent/BE383470A/xx unknown
- NL NL35821D patent/NL35821C/xx active
-
1930
- 1930-11-04 FR FR720770D patent/FR720770A/en not_active Expired
-
1931
- 1931-10-20 GB GB29144/31A patent/GB376583A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE383470A (en) | |
| NL35821C (en) | |
| FR720770A (en) | 1932-02-24 |
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