GB935877A - Purification of dilute commercial sulfuric acid - Google Patents
Purification of dilute commercial sulfuric acidInfo
- Publication number
- GB935877A GB935877A GB3816561A GB3816561A GB935877A GB 935877 A GB935877 A GB 935877A GB 3816561 A GB3816561 A GB 3816561A GB 3816561 A GB3816561 A GB 3816561A GB 935877 A GB935877 A GB 935877A
- Authority
- GB
- United Kingdom
- Prior art keywords
- active carbon
- sulphide
- hydrogen sulphide
- hydrogen
- 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
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000746 purification Methods 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 6
- 229910052799 carbon Inorganic materials 0.000 abstract 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 4
- 239000002253 acid Substances 0.000 abstract 2
- 239000012535 impurity Substances 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- 239000001117 sulphuric acid Substances 0.000 abstract 2
- AGVJBLHVMNHENQ-UHFFFAOYSA-N Calcium sulfide Chemical compound [S-2].[Ca+2] AGVJBLHVMNHENQ-UHFFFAOYSA-N 0.000 abstract 1
- ZGSDJMADBJCNPN-UHFFFAOYSA-N [S-][NH3+] Chemical compound [S-][NH3+] ZGSDJMADBJCNPN-UHFFFAOYSA-N 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 1
- UNHKSXOTUHOTAB-UHFFFAOYSA-N sodium;sulfane Chemical compound [Na].S UNHKSXOTUHOTAB-UHFFFAOYSA-N 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
-
- 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
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/14—Hydroxylamine; Salts thereof
- C01B21/1409—Preparation
- C01B21/1418—Preparation by catalytic reduction of nitrogen oxides or nitrates with hydrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
Inorganic or organic impurities are removed from dilute sulphuric acid by treatment with hydrogen sulphide in preferred amount 5-50 mg./litre, in the presence of active carbon, and after separating the active carbon from the sulphuric acid the remainder of the hydrogen sulphide is destroyed with hydrogen peroxide in the presence of active carbon. The hydrogen sulphide may be added as such or produced in situ by adding a solution of sodium sulphide, sodium hydrogen sulphide, ammonium sulphide or calcium sulphide. The acid containing hydrogen sulphide is passed through a first tower packed with active carbon having a surface area of 1000 mg.2-1 and a grain size of 3 mm., in 5-10 minutes. Excess hydrogen peroxide, e.g. 25-250 mg. per litre is added and the liquid is passed through a second tower packed with active carbon, in 3-6 minutes. Four organic p impurities are present, the impure acid may be pretreated by passage through a tower containing active carbon before treatment with hydrogen sulphide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB60086A DE1124024B (en) | 1960-11-15 | 1960-11-15 | Process for the purification of dilute technical sulfuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB935877A true GB935877A (en) | 1963-09-04 |
Family
ID=6972703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3816561A Expired GB935877A (en) | 1960-11-15 | 1961-10-25 | Purification of dilute commercial sulfuric acid |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH419075A (en) |
| DE (1) | DE1124024B (en) |
| GB (1) | GB935877A (en) |
| NL (1) | NL271122A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016160686A1 (en) * | 2015-03-31 | 2016-10-06 | Rohm And Haas Company | Sulfonation process |
| WO2016160684A1 (en) * | 2015-03-31 | 2016-10-06 | Rohm And Haas Company | Treating sulfuric acid |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19808939A1 (en) * | 1998-03-03 | 1999-09-09 | Basf Ag | Process for the preparation of hydroxylammonium salts |
| CN102923675B (en) * | 2012-11-27 | 2014-08-06 | 武汉工程大学 | Process method for purifying sulfuric acid in fluorobenzene waste acid |
-
0
- NL NL271122D patent/NL271122A/xx unknown
-
1960
- 1960-11-15 DE DEB60086A patent/DE1124024B/en active Pending
-
1961
- 1961-10-18 CH CH1205761A patent/CH419075A/en unknown
- 1961-10-25 GB GB3816561A patent/GB935877A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016160686A1 (en) * | 2015-03-31 | 2016-10-06 | Rohm And Haas Company | Sulfonation process |
| WO2016160684A1 (en) * | 2015-03-31 | 2016-10-06 | Rohm And Haas Company | Treating sulfuric acid |
| KR20170133385A (en) * | 2015-03-31 | 2017-12-05 | 롬 앤드 하아스 컴패니 | Sulfuric acid treatment |
| CN107438582A (en) * | 2015-03-31 | 2017-12-05 | 罗门哈斯公司 | Handle sulfuric acid |
| US10138124B2 (en) | 2015-03-31 | 2018-11-27 | Rohm And Haas Company | Treating sulfuric acid |
| US10428163B2 (en) | 2015-03-31 | 2019-10-01 | Rohm And Haas Company | Sulfonation process |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1124024B (en) | 1962-02-22 |
| CH419075A (en) | 1966-08-31 |
| NL271122A (en) |
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