GB1474215A - Process for removing hydrogen fluoride from gases containing it - Google Patents
Process for removing hydrogen fluoride from gases containing itInfo
- Publication number
- GB1474215A GB1474215A GB3603974A GB3603974A GB1474215A GB 1474215 A GB1474215 A GB 1474215A GB 3603974 A GB3603974 A GB 3603974A GB 3603974 A GB3603974 A GB 3603974A GB 1474215 A GB1474215 A GB 1474215A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solids
- gas
- precipitator
- hydrogen fluoride
- bed
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/22—Collecting emitted gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Electrochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Treating Waste Gases (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Separation Of Gases By Adsorption (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
1474215 Electrostatic precipitators VEREINIGTE ALUMINIUM WERKE AG and METALLGESELLSCHAFT AG 15 Aug 1974 [15 Sept 1974] 36039/74 Addition to 1341313 Heading B2J [Also in Divisions Cl and C7] Hydrogen fluoride is removed from a gas stream, e.g. the exhaust gases from the electrolytic production of aluminium using molten flux, by introduction of the stream of gas as the fluidising gas into a fluid bed reactor 2 containing a solid absorbent for the HF, e.g. alumina and/or sodium aluminate, so that the solids form an expanded fluid bed with a solids concentration which decreases upwardly in the bed and from which the HF absorbing solids are discharged upwardly and withdrawn through the suspension outlet 3 and fed to an electrostatic preciptator 4 to separate the solids which are collected in the bins 5. Optionally part of the separated solids can be recycled to the fluidised bed 2 through the conduit 9. The entrained solids may also be further separated in the precipitator into fractions differing in particle size wherein the precipitator is provided with a plurality of fields and dust collecting bins.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732346580 DE2346580A1 (en) | 1973-09-15 | 1973-09-15 | PROCESS FOR SEPARATION OF HYDROGEN |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1474215A true GB1474215A (en) | 1977-05-18 |
Family
ID=5892706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3603974A Expired GB1474215A (en) | 1973-09-15 | 1974-08-15 | Process for removing hydrogen fluoride from gases containing it |
Country Status (14)
| Country | Link |
|---|---|
| JP (2) | JPS5056396A (en) |
| AT (1) | AT353241B (en) |
| BE (1) | BE819763R (en) |
| BR (1) | BR7406541D0 (en) |
| CA (1) | CA1030728A (en) |
| CS (1) | CS186274B2 (en) |
| DE (1) | DE2346580A1 (en) |
| FR (1) | FR2243724B2 (en) |
| GB (1) | GB1474215A (en) |
| IT (1) | IT1048197B (en) |
| NL (1) | NL7408670A (en) |
| NO (1) | NO142859C (en) |
| RO (1) | RO72798B1 (en) |
| SE (1) | SE408408B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001631A1 (en) * | 1981-11-04 | 1983-05-11 | Frilund, Eyvind | Heat recovery in aluminium-melting works |
| GB2286542A (en) * | 1994-02-02 | 1995-08-23 | Boc Group Plc | Treating waste gas |
| CN115990439A (en) * | 2022-11-28 | 2023-04-21 | 兰州理工大学 | Anhydrous hydrogen fluoride production equipment and process based on expanded fluidized bed |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295376B (en) * | 2019-07-12 | 2024-03-22 | 东方电气集团东方锅炉股份有限公司 | Electrolytic aluminum flue gas purification system and process |
| CN111760409A (en) * | 2020-06-19 | 2020-10-13 | 锦洋高新材料股份有限公司 | Technical method for treating low-density aluminum fluoride tail gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2056096B2 (en) * | 1970-11-14 | 1978-09-28 | Metallgesellschaft Ag, 6000 Frankfurt | Process for the separation of hydrogen fluoride from gases |
-
1973
- 1973-09-15 DE DE19732346580 patent/DE2346580A1/en not_active Withdrawn
-
1974
- 1974-06-12 JP JP49067001A patent/JPS5056396A/ja active Pending
- 1974-06-17 AT AT499774A patent/AT353241B/en not_active IP Right Cessation
- 1974-06-27 NL NL7408670A patent/NL7408670A/en not_active Application Discontinuation
- 1974-08-02 CA CA206,308A patent/CA1030728A/en not_active Expired
- 1974-08-08 BR BR6541/74A patent/BR7406541D0/en unknown
- 1974-08-15 GB GB3603974A patent/GB1474215A/en not_active Expired
- 1974-09-10 IT IT27106/74A patent/IT1048197B/en active
- 1974-09-10 BE BE6044744A patent/BE819763R/en not_active IP Right Cessation
- 1974-09-10 FR FR7430584A patent/FR2243724B2/fr not_active Expired
- 1974-09-13 CS CS7400006308A patent/CS186274B2/en unknown
- 1974-09-13 NO NO743297A patent/NO142859C/en unknown
- 1974-09-13 SE SE7411594A patent/SE408408B/en not_active IP Right Cessation
- 1974-09-13 RO RO79986A patent/RO72798B1/en unknown
-
1981
- 1981-06-12 JP JP56090708A patent/JPS6033526B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001631A1 (en) * | 1981-11-04 | 1983-05-11 | Frilund, Eyvind | Heat recovery in aluminium-melting works |
| GB2286542A (en) * | 1994-02-02 | 1995-08-23 | Boc Group Plc | Treating waste gas |
| CN115990439A (en) * | 2022-11-28 | 2023-04-21 | 兰州理工大学 | Anhydrous hydrogen fluoride production equipment and process based on expanded fluidized bed |
Also Published As
| Publication number | Publication date |
|---|---|
| AT353241B (en) | 1979-11-12 |
| FR2243724B2 (en) | 1980-08-14 |
| SE7411594L (en) | 1975-03-17 |
| IT1048197B (en) | 1980-11-20 |
| BE819763R (en) | 1975-03-10 |
| RO72798A7 (en) | 1984-03-15 |
| NL7408670A (en) | 1975-03-18 |
| NO743297L (en) | 1975-04-14 |
| NO142859C (en) | 1980-11-05 |
| CA1030728A (en) | 1978-05-09 |
| FR2243724A2 (en) | 1975-04-11 |
| ATA499774A (en) | 1979-04-15 |
| RO72798B1 (en) | 1984-03-31 |
| JPS5794320A (en) | 1982-06-11 |
| NO142859B (en) | 1980-07-28 |
| JPS6033526B2 (en) | 1985-08-03 |
| JPS5056396A (en) | 1975-05-17 |
| CS186274B2 (en) | 1978-11-30 |
| DE2346580A1 (en) | 1975-04-24 |
| SE408408B (en) | 1979-06-11 |
| BR7406541D0 (en) | 1975-07-29 |
| AU6877374A (en) | 1975-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1486871A (en) | Process for removing hydrogen fluoride from gases containing it | |
| US3907971A (en) | Method of removing HF from gases | |
| US4065271A (en) | Process of separating hydrogen fluoride from gases | |
| US3780497A (en) | Adsorption of fluorine and fluorine compounds on alumina | |
| GB1455384A (en) | Dust filter | |
| ES8405637A1 (en) | Process for separating noxious material from off-gases. | |
| US2421212A (en) | Operation of fluidized systems | |
| US2430015A (en) | Utilization of powdered catalysts | |
| GB875794A (en) | Improvements relating to furnace charging and fluorine recovery in the production ofaluminium by melt-electrolysis | |
| US2771158A (en) | Recovery of pigments from aerosols | |
| US2651600A (en) | Method of reducing contaminants on finely divided catalyst | |
| GB1474215A (en) | Process for removing hydrogen fluoride from gases containing it | |
| GB989704A (en) | Process for the production of zinc calcine | |
| CA1185072A (en) | Process for the removal of impurities in reacted alumina | |
| US4960445A (en) | Process for removing SO2 and fly ash from flue gas | |
| GB8826404D0 (en) | Method & apparatus for separating & recovering particulate material | |
| US3264800A (en) | Process of discharging pulverulent materials, especially very fine dust, from cyclones | |
| Lamb et al. | Dry Scrubbing of Aluminum Cell Gases: Design and Operating Characteristics of a Novel Gas/Solids Reactor | |
| GB1252228A (en) | ||
| GB669906A (en) | Process and apparatus for carrying out reactions of gases with fine grained substances | |
| GB1114402A (en) | Recovery of fluorine values from the waste gases of aluminium reduction cells | |
| GB752803A (en) | Method for the removal of fluorine from industrial gases | |
| PL352496A1 (en) | Separator of particulate matter | |
| Hinds | Beneficiation of bauxite tailings | |
| GB1479924A (en) | Process for treating solid adsorbents used to remove fluorine compounds from exhaust gases |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] |