GB348866A - An improvement relating to the purification of sulphuric acid - Google Patents
An improvement relating to the purification of sulphuric acidInfo
- Publication number
- GB348866A GB348866A GB1391530A GB1391530A GB348866A GB 348866 A GB348866 A GB 348866A GB 1391530 A GB1391530 A GB 1391530A GB 1391530 A GB1391530 A GB 1391530A GB 348866 A GB348866 A GB 348866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphuric acid
- purification
- improvement relating
- relating
- improvement
- 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)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
Sulphuric acid having a concentration of higher than 60 per cent is freed from nitric acid constituents by adding a solution of sulphur dioxide in water or sulphuric acid and passing a current of indifferent gas, such as air or flue gas, through the resulting mixture at a raised temperature, say 100-200 DEG C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1391530A GB348866A (en) | 1930-05-06 | 1930-05-06 | An improvement relating to the purification of sulphuric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1391530A GB348866A (en) | 1930-05-06 | 1930-05-06 | An improvement relating to the purification of sulphuric acid |
Publications (1)
Publication Number | Publication Date |
---|---|
GB348866A true GB348866A (en) | 1931-05-21 |
Family
ID=10031692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1391530A Expired GB348866A (en) | 1930-05-06 | 1930-05-06 | An improvement relating to the purification of sulphuric acid |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB348866A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2955920A (en) * | 1955-10-14 | 1960-10-11 | Nat Distillers Chem Corp | Decarbonization of spent acids |
US4155989A (en) * | 1977-11-14 | 1979-05-22 | Ciba-Geigy Corporation | Removal of nitric acid from nitric acid-sulfuric acid mixtures |
WO1998002381A1 (en) * | 1995-05-04 | 1998-01-22 | Metallgesellschaft Aktiengesellschaft | PROCESS FOR REMOVING NOx FROM NITROSYLSULPHURIC ACID |
WO2000012429A1 (en) * | 1998-09-01 | 2000-03-09 | Metallgesellschaft Ag | Method for removing nitrogen oxides from nitrosyl sulphuric acid |
US6238639B1 (en) | 1995-05-04 | 2001-05-29 | Metallgesellschaft Aktiengesellschaft | Process for removing NOx from nitrosylsulphuric acid |
-
1930
- 1930-05-06 GB GB1391530A patent/GB348866A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2955920A (en) * | 1955-10-14 | 1960-10-11 | Nat Distillers Chem Corp | Decarbonization of spent acids |
US4155989A (en) * | 1977-11-14 | 1979-05-22 | Ciba-Geigy Corporation | Removal of nitric acid from nitric acid-sulfuric acid mixtures |
WO1998002381A1 (en) * | 1995-05-04 | 1998-01-22 | Metallgesellschaft Aktiengesellschaft | PROCESS FOR REMOVING NOx FROM NITROSYLSULPHURIC ACID |
AU714625B2 (en) * | 1995-05-04 | 2000-01-06 | Outotec Oyj | Process of removing NOx from nitrosyl hydrogensulfate |
US6238639B1 (en) | 1995-05-04 | 2001-05-29 | Metallgesellschaft Aktiengesellschaft | Process for removing NOx from nitrosylsulphuric acid |
WO2000012429A1 (en) * | 1998-09-01 | 2000-03-09 | Metallgesellschaft Ag | Method for removing nitrogen oxides from nitrosyl sulphuric acid |
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