GB1304781A - - Google Patents
Info
- Publication number
- GB1304781A GB1304781A GB3195470A GB3195470A GB1304781A GB 1304781 A GB1304781 A GB 1304781A GB 3195470 A GB3195470 A GB 3195470A GB 3195470 A GB3195470 A GB 3195470A GB 1304781 A GB1304781 A GB 1304781A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calcium sulphate
- fluorspar
- furnace
- moles
- hydrogen fluoride
- 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
- C01B7/192—Preparation from fluorspar
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1304781 Hydrogen fluoride ALLIED CHEMICAL CORP 1 July 1970 [11 Nov 1969] 31954/70 Heading C1A Hydrogen fluoride is produced continuously by introducing substantially equimolar amounts of fluorspar and sulphuric acid, together with calcium sulphate, at or near to one end of a rotary furnace heated to a temperature of 250‹ to 650‹ F., withdrawing solid material, consisting mainly or wholly of calcium sulphate, from the furnace at a point at which the production of hydrogen fluoride from the fluorspar is more than 70% complete, and recycling this withdrawn material to the input end of the furnace as the source of calcium sulphate, the amount of calcium sulphate in the system being such that the molar proportion thereof in the reaction mixture at the input end of the furnace is more than 3 moles and up to 10 moles for every mole of fluorspar introduced. Examples compare the reaction with or without the presence of calcium sulphate. In Example 2, 13,300 lb./hour of sulphuric acid, 11,000 lb./hour of acid grade fluorspar and 4 moles of recycled calcium sulphate for every mole of fluorspar fed are added to a rotary furnace at 350‹ to 450‹ F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX11525169 | 1969-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1304781A true GB1304781A (en) | 1973-01-31 |
Family
ID=19745288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3195470A Expired GB1304781A (en) | 1969-11-11 | 1970-07-01 |
Country Status (8)
| Country | Link |
|---|---|
| CA (1) | CA946125A (en) |
| DE (1) | DE2048277C3 (en) |
| ES (1) | ES382184A1 (en) |
| FR (1) | FR2069238A5 (en) |
| GB (1) | GB1304781A (en) |
| NL (1) | NL7014949A (en) |
| SU (1) | SU396871A3 (en) |
| ZA (1) | ZA707456B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2159136A (en) * | 1984-05-18 | 1985-11-27 | Atochem | Process for the manufacture of hydrofluoric acid by reaction of sulphuric acid with fluorospar in a rotating oven |
| EP0460524A1 (en) * | 1990-06-01 | 1991-12-11 | Asahi Glass Company Ltd. | Process for preparing hydrogen fluoride |
| WO2008092926A1 (en) * | 2007-02-02 | 2008-08-07 | Solvay Fluor Gmbh | Preparation of hydrogen fluoride from calcium fluoride and sulfuric acid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2453495C1 (en) * | 2010-12-03 | 2012-06-20 | Государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" | Method of producing hydrogen fluoride |
-
1970
- 1970-07-01 GB GB3195470A patent/GB1304781A/en not_active Expired
- 1970-07-27 ES ES382184A patent/ES382184A1/en not_active Expired
- 1970-10-01 DE DE2048277A patent/DE2048277C3/en not_active Expired
- 1970-10-12 NL NL7014949A patent/NL7014949A/xx not_active Application Discontinuation
- 1970-10-22 CA CA096,289A patent/CA946125A/en not_active Expired
- 1970-11-03 ZA ZA707456A patent/ZA707456B/en unknown
- 1970-11-10 FR FR7040408A patent/FR2069238A5/fr not_active Expired
- 1970-11-11 SU SU1491471A patent/SU396871A3/ru active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2159136A (en) * | 1984-05-18 | 1985-11-27 | Atochem | Process for the manufacture of hydrofluoric acid by reaction of sulphuric acid with fluorospar in a rotating oven |
| JPS6110004A (en) * | 1984-05-18 | 1986-01-17 | ソシエテ アトケム | Manufacture of hydrofluoric acid |
| JPH0440282B2 (en) * | 1984-05-18 | 1992-07-02 | Atochem | |
| EP0460524A1 (en) * | 1990-06-01 | 1991-12-11 | Asahi Glass Company Ltd. | Process for preparing hydrogen fluoride |
| US5219551A (en) * | 1990-06-01 | 1993-06-15 | Asahi Glass Company Ltd. | Process for preparing hydrogen fluoride |
| WO2008092926A1 (en) * | 2007-02-02 | 2008-08-07 | Solvay Fluor Gmbh | Preparation of hydrogen fluoride from calcium fluoride and sulfuric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2069238A5 (en) | 1971-09-03 |
| SU396871A3 (en) | 1973-08-29 |
| DE2048277A1 (en) | 1971-05-19 |
| NL7014949A (en) | 1971-05-13 |
| ZA707456B (en) | 1971-11-24 |
| ES382184A1 (en) | 1972-10-16 |
| DE2048277C3 (en) | 1978-09-21 |
| CA946125A (en) | 1974-04-30 |
| DE2048277B2 (en) | 1978-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1496683A (en) | Manufacture of calcium sulphate alphahemihydrate | |
| GB1394133A (en) | Production of hydrogen fluoride and calcium sulphate | |
| GB1426420A (en) | Alumina production | |
| GB1025236A (en) | Process for the manufacture of dicalcium phosphate | |
| GB1304781A (en) | ||
| GB1153276A (en) | Process for the Preparation of Chlorodialkylthiophosphates | |
| ES395329A1 (en) | Production of potassium dihydrogen phosphate fertilizers | |
| GB1422517A (en) | Process for the production of benzotrifluoride | |
| GB1281199A (en) | Process for the preparation of a nitrophosphate fertilizer | |
| KR850008145A (en) | Method for producing fluoric acid by reacting sulfuric acid with fluorspar in a rotary oven | |
| GB1311568A (en) | Method of producing phosphoric acid and phosphates from monocalcium phosphate | |
| GB1509798A (en) | Process for preparing monocalcium phosphate compositions having reduced caking tendencies | |
| ES270600A3 (en) | Granular potassium metaphosphate | |
| GB1142351A (en) | Process for the production of chloromethanes | |
| GB1504018A (en) | Phosphate process | |
| US2170843A (en) | Method of making calcium phosphate products | |
| GB1435069A (en) | Process for the preparation of ethylene dichloride and/or vinyl chloride from ethane | |
| SU467029A1 (en) | The method of producing potassium sulfate | |
| GB810208A (en) | Fertilizers | |
| ES397978A1 (en) | Production of potassium dihydrogen phosphate | |
| GB1051110A (en) | ||
| GB1272629A (en) | Process for the manufacture of phosphoric acid | |
| GB1152462A (en) | Fertilizers | |
| GB1515211A (en) | Process for the production of trisodium phosphate | |
| GB1100222A (en) | Preparation of thiuram disulphides |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |