GB1371790A - Production of hydrogen fluoride - Google Patents
Production of hydrogen fluorideInfo
- Publication number
- GB1371790A GB1371790A GB338272A GB338272A GB1371790A GB 1371790 A GB1371790 A GB 1371790A GB 338272 A GB338272 A GB 338272A GB 338272 A GB338272 A GB 338272A GB 1371790 A GB1371790 A GB 1371790A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluoride
- heated
- h2so4
- temp
- jan
- 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
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 title abstract 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 title abstract 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 3
- 235000011149 sulphuric acid Nutrition 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 239000000654 additive Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- WRIYPTGFYKBSFU-UHFFFAOYSA-N ()-Conen Chemical compound CCCCOP(=O)(SCC)SCC1=CC=CC=C1 WRIYPTGFYKBSFU-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 239000003575 carbonaceous material Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000567 combustion gas Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910001512 metal fluoride Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 235000015320 potassium carbonate Nutrition 0.000 abstract 1
- 229910000027 potassium carbonate Inorganic materials 0.000 abstract 1
- 235000011118 potassium hydroxide Nutrition 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 239000000725 suspension Substances 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
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
- C01B7/192—Preparation from fluorspar
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/08—Compounds containing halogen
- C01B33/10—Compounds containing silicon, fluorine, and other elements
- C01B33/103—Fluosilicic acid; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Glass Compositions (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
1371790 Hydrogen fluoride preparation BAYER AG 25 Jan 1972 [26 Jan 1971] 3382/72 Heading C1A HF and a by-product metal sulphate are prepared by (a) pre-heating a solid metal fluoride, e.g. ÀCaF2 or NaSiF6, in a gaseous suspension having a solid/gas conen. of 0À2-4 kg./Nm.<3> to a temp. of 500-800‹ C. and then (b) reacting the pre-heated fluoride with H2SO4 at a temp. of 100-500‹ C. The fluoride may have a ptle. size of 40-250 Á and contain basic additives, e.g. NaOH, KOH, Na2CO3 or K2CO3, in amounts up to 20 mole per cent added before or after the pre-heat treatment to increase the exothermicity of the subsequent acid reaction. The fluoride may be heated in countercurrent by burning carbonaceous materials. The H2SO4 may be added to the fluoride partly as SO3 or oleum either incrementally or in one step preferably outside the reaction furnace. In an embodiment of the process ground CaF2 is fed via 5 into heat exchanger 6 heated by hot combustion gases entering at 7 and exiting at 19, the heated fluoride is then removed from the exchanger at 10 and brought into contact with increments of H2SO4 supplied via 12, prior to being heated with the acid in the rotary furnace 13. Basic additives may be supplied either to the hot fluoride at 17 or to the cold fluoride at 18.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2103338A DE2103338C3 (en) | 1971-01-26 | 1971-01-26 | Process for the production of hydrofluoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1371790A true GB1371790A (en) | 1974-10-30 |
Family
ID=5796819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB338272A Expired GB1371790A (en) | 1971-01-26 | 1972-01-25 | Production of hydrogen fluoride |
Country Status (10)
| Country | Link |
|---|---|
| AU (1) | AU454507B2 (en) |
| BE (1) | BE778516A (en) |
| CA (1) | CA981870A (en) |
| DE (1) | DE2103338C3 (en) |
| ES (1) | ES399184A1 (en) |
| FR (1) | FR2123448B1 (en) |
| GB (1) | GB1371790A (en) |
| IT (1) | IT948541B (en) |
| NL (1) | NL7200946A (en) |
| ZA (1) | ZA72492B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150102A (en) * | 1975-10-02 | 1979-04-17 | Bayer Aktiengesellschaft | Purifying hydrofluoric acid |
| US6841140B2 (en) | 2000-07-10 | 2005-01-11 | Daikin Industries, Ltd. | Method and apparatus for producing hydrogen fluoride |
| CN115487518A (en) * | 2022-10-15 | 2022-12-20 | 江西天晟化工有限公司 | Electronic-grade hydrofluoric acid production device and production method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1316980A (en) * | 1961-04-27 | 1963-02-01 | Allied Chem | Process for manufacturing hydrofluoric acid by the action of sulfuric acid on fluorspar |
-
1971
- 1971-01-26 DE DE2103338A patent/DE2103338C3/en not_active Expired
-
1972
- 1972-01-06 AU AU37633/72A patent/AU454507B2/en not_active Expired
- 1972-01-24 IT IT47894/72A patent/IT948541B/en active
- 1972-01-24 CA CA132,998A patent/CA981870A/en not_active Expired
- 1972-01-24 NL NL7200946A patent/NL7200946A/xx unknown
- 1972-01-25 ZA ZA720492A patent/ZA72492B/en unknown
- 1972-01-25 ES ES399184A patent/ES399184A1/en not_active Expired
- 1972-01-25 GB GB338272A patent/GB1371790A/en not_active Expired
- 1972-01-26 BE BE778516A patent/BE778516A/en unknown
- 1972-01-26 FR FR7202608A patent/FR2123448B1/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150102A (en) * | 1975-10-02 | 1979-04-17 | Bayer Aktiengesellschaft | Purifying hydrofluoric acid |
| US6841140B2 (en) | 2000-07-10 | 2005-01-11 | Daikin Industries, Ltd. | Method and apparatus for producing hydrogen fluoride |
| CN115487518A (en) * | 2022-10-15 | 2022-12-20 | 江西天晟化工有限公司 | Electronic-grade hydrofluoric acid production device and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| BE778516A (en) | 1972-07-26 |
| IT948541B (en) | 1973-06-11 |
| CA981870A (en) | 1976-01-20 |
| FR2123448A1 (en) | 1972-09-08 |
| ES399184A1 (en) | 1974-12-16 |
| DE2103338C3 (en) | 1978-03-02 |
| AU3763372A (en) | 1973-07-12 |
| ZA72492B (en) | 1972-09-27 |
| NL7200946A (en) | 1972-07-28 |
| DE2103338A1 (en) | 1972-08-03 |
| FR2123448B1 (en) | 1977-04-01 |
| AU454507B2 (en) | 1974-10-31 |
| DE2103338B2 (en) | 1975-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |