GB907162A - Process for denitrosing oleum - Google Patents
Process for denitrosing oleumInfo
- Publication number
- GB907162A GB907162A GB2518860A GB2518860A GB907162A GB 907162 A GB907162 A GB 907162A GB 2518860 A GB2518860 A GB 2518860A GB 2518860 A GB2518860 A GB 2518860A GB 907162 A GB907162 A GB 907162A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oleum
- derivative
- nitrogen
- ammonia
- denitrosation
- 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
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/94—Recovery from nitration acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Oleum containing at least one nitrogen-oxygen compound is denitrosed by adding to it a derivative of ammonia, the derivative being urea, amidosulphonic acid, hydrazine sulphate, hydroxyl ammonium sulphate, or acetamide. The derivatives are usually used in excess of the amounts of nitrogen-oxygen compounds in the oleum, although hydrazine sulphate is effective when not in excess, but only below a concentration of 50% oleum. Urea is efficient at a temperature of 50 DEG C., and in relatively small amounts. The oleum is heated to the required temperature with agitation, and then mixed with a small amount of the ammonia derivative to be used, either in powder form or in the form of a solution in concentrated sulphuric acid. The reaction is usually complete after 60-100 minutes. The initial concentration of the nitrogen-oxygen compounds before denitrosation may be determined so that the quantity of ammonia derivative can be varied accordingly. 30% oleum may be distilled after denitrosation to produce 100% oleum, or may be mixed with 100% oleum to produce 65% oleum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2518860A GB907162A (en) | 1960-07-19 | 1960-07-19 | Process for denitrosing oleum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2518860A GB907162A (en) | 1960-07-19 | 1960-07-19 | Process for denitrosing oleum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB907162A true GB907162A (en) | 1962-10-03 |
Family
ID=10223665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2518860A Expired GB907162A (en) | 1960-07-19 | 1960-07-19 | Process for denitrosing oleum |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB907162A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116143081A (en) * | 2023-03-08 | 2023-05-23 | 昆明理工大学 | Method for removing nitrogen oxides contained in concentrated sulfuric acid |
-
1960
- 1960-07-19 GB GB2518860A patent/GB907162A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116143081A (en) * | 2023-03-08 | 2023-05-23 | 昆明理工大学 | Method for removing nitrogen oxides contained in concentrated sulfuric acid |
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