GB1077905A - Process for the production of hydrofluoric acid substantially free from sulphuric acid - Google Patents
Process for the production of hydrofluoric acid substantially free from sulphuric acidInfo
- Publication number
- GB1077905A GB1077905A GB13782/66A GB1378266A GB1077905A GB 1077905 A GB1077905 A GB 1077905A GB 13782/66 A GB13782/66 A GB 13782/66A GB 1378266 A GB1378266 A GB 1378266A GB 1077905 A GB1077905 A GB 1077905A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condensers
- sulphuric acid
- impure
- h2so4
- production
- 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
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Substantially sulphuric acid free hydrogen fluoride is prepared from fluorspar and sulphuric acid by passing the vapours through a packed separating column to two separate condensers or groups of condensers and returning the condensed impure hydrofluoric acid from the first set of condensers to the packed column to irrigate it. The impure vapours may be washed with concentrated H2SO4 before coming into the packed column at 140-150 DEG C. In the first condensers condensation is effected with water at about 10 DEG C. and the impure condensate is recycled to the packed column at 20-40 DEG C. The second set of condensers may be cooled with brine at - 10 DEG C. In an example, HF condensate from the first group of condensers contained about 0.3% H2SO4 and that from the second set contained about 0.007% of H2SO4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER0040418 | 1965-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1077905A true GB1077905A (en) | 1967-08-02 |
Family
ID=7406055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13782/66A Expired GB1077905A (en) | 1965-04-20 | 1966-03-29 | Process for the production of hydrofluoric acid substantially free from sulphuric acid |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE679772A (en) |
| CH (1) | CH471745A (en) |
| DE (1) | DE1567778B1 (en) |
| ES (1) | ES325680A1 (en) |
| FR (1) | FR1476404A (en) |
| GB (1) | GB1077905A (en) |
| NL (1) | NL6604306A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460551A (en) * | 1981-04-28 | 1984-07-17 | Buss Ag | Process and device for manufacturing synthetic anhydrous calcium sulphate and pure hydrofluoric acid |
-
1965
- 1965-04-20 DE DE19651567778 patent/DE1567778B1/en active Pending
-
1966
- 1966-03-29 GB GB13782/66A patent/GB1077905A/en not_active Expired
- 1966-03-31 NL NL6604306A patent/NL6604306A/xx unknown
- 1966-04-19 CH CH560166A patent/CH471745A/en not_active IP Right Cessation
- 1966-04-19 ES ES0325680A patent/ES325680A1/en not_active Expired
- 1966-04-19 FR FR58172A patent/FR1476404A/en not_active Expired
- 1966-04-20 BE BE679772D patent/BE679772A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460551A (en) * | 1981-04-28 | 1984-07-17 | Buss Ag | Process and device for manufacturing synthetic anhydrous calcium sulphate and pure hydrofluoric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1567778B1 (en) | 1970-07-23 |
| NL6604306A (en) | 1966-10-21 |
| ES325680A1 (en) | 1967-03-01 |
| BE679772A (en) | 1966-10-03 |
| CH471745A (en) | 1969-04-30 |
| FR1476404A (en) | 1967-04-07 |
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