GB816290A - Improved process for the recovery of sulphuric acid from waste acid - Google Patents
Improved process for the recovery of sulphuric acid from waste acidInfo
- Publication number
- GB816290A GB816290A GB2387251A GB2387251A GB816290A GB 816290 A GB816290 A GB 816290A GB 2387251 A GB2387251 A GB 2387251A GB 2387251 A GB2387251 A GB 2387251A GB 816290 A GB816290 A GB 816290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- recovery
- improved process
- distilling
- sulphuric acid
- 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
- 239000002253 acid Substances 0.000 title abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 title abstract 2
- 239000001117 sulphuric acid Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 238000011084 recovery Methods 0.000 title 1
- 239000002699 waste material Substances 0.000 title 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000012535 impurity Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000006396 nitration reaction Methods 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 150000004027 organic amino compounds Chemical class 0.000 abstract 1
- 230000001590 oxidative Effects 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 1
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
Sulphuric acid is recovered and purified after being used in the nitration of an organic amino compound by first distilling off water, then heating to decompose impurities, oxidizing to remove dark-coloured impurities, e.g. with nitric acid, then cooling, diluting with water and treating with absolute alcohol to give a precipitate of ammonium normal and acid sulphates which are separated, distilling off the alcohol and concentrating the residual acid by heating and evaporating.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816290A true GB816290A (en) | 1959-07-08 |
Family
ID=1737995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2387251A Expired GB816290A (en) | 1951-10-12 | Improved process for the recovery of sulphuric acid from waste acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816290A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3427303A (en) * | 1963-07-30 | 1969-02-11 | Organico Soc | Process for the preparation of cycloalkanone oximes and lactams in the presence of strong acids |
| US4104365A (en) * | 1976-05-27 | 1978-08-01 | John Howard | Method of separating sulfuric acid from neutral sodium sulfate in spent chlorine dioxide generator liquor |
| CN102936002A (en) * | 2012-10-24 | 2013-02-20 | 北京丰泽绿源环境技术有限公司 | Method for recovering high-purity sulfuric acid from 2,4,6-trinitrotoluene nitrification waste acid, and application thereof |
-
1951
- 1951-10-12 GB GB2387251A patent/GB816290A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3427303A (en) * | 1963-07-30 | 1969-02-11 | Organico Soc | Process for the preparation of cycloalkanone oximes and lactams in the presence of strong acids |
| US4104365A (en) * | 1976-05-27 | 1978-08-01 | John Howard | Method of separating sulfuric acid from neutral sodium sulfate in spent chlorine dioxide generator liquor |
| CN102936002A (en) * | 2012-10-24 | 2013-02-20 | 北京丰泽绿源环境技术有限公司 | Method for recovering high-purity sulfuric acid from 2,4,6-trinitrotoluene nitrification waste acid, and application thereof |
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