GB1375623A - - Google Patents
Info
- Publication number
- GB1375623A GB1375623A GB2595772A GB2595772A GB1375623A GB 1375623 A GB1375623 A GB 1375623A GB 2595772 A GB2595772 A GB 2595772A GB 2595772 A GB2595772 A GB 2595772A GB 1375623 A GB1375623 A GB 1375623A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- hydrogen fluoride
- adsorbed
- heating
- june
- 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
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
- C01F7/54—Double compounds containing both aluminium and alkali metals or alkaline-earth metals
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/146—Perfluorocarbons [PFC]; Hydrofluorocarbons [HFC]; Sulfur hexafluoride [SF6]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Electrolytic Production Of Metals (AREA)
- Hinges (AREA)
Abstract
1375623 HF removal; aluminium fluoride VEREINIGTE ALUMINIUM-WERKE AG 2 June 1972 [4 June 1971] 25957/72 Heading C1A [Also in Division C7] Exhaust gases comprising hydrogen fluoride and carbon dust produced by electrolysis of a melt comprising Al 2 O 3 , AlF 3 , CaF 2 and NaF are dry cleaned by contact with a solid material which binds the hydrogen fluoride by adsorption and/or chemical reaction and on which carbon dust is adsorbed wherein the solid material-is subjected to a thermal treatment (e.g. heating to 500-1000‹ C. in the presence of air or oxygen) to remove adsorbed carbon by combustion and to convert the adsorbed hydrogen fluoride to a stable fluid and is then charged to the electrolysis step. The thermal treatment may be carried out using a fluidized solids chamber or rotary furnace employing indirect or direct heating (e.g. electrical heating) and may be carried out either within the gas cleaning plant or in plant separate therefrom. The solids material used in the gas cleaning may be aluminium oxide which may be present in an amount of 9% of the total quantity of oxide required in the electrolytic production of aluminium.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2127910A DE2127910C3 (en) | 1971-06-04 | 1971-06-04 | Process for the thermal remuneration of solids that are discharged from systems for the dry cleaning of exhaust gases from aluminum electrolysis furnaces and used as an insert for aluminum electrolysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1375623A true GB1375623A (en) | 1974-11-27 |
Family
ID=5809898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2595772A Expired GB1375623A (en) | 1971-06-04 | 1972-06-02 |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT322224B (en) |
| BE (1) | BE784298A (en) |
| CH (1) | CH565865A5 (en) |
| DE (1) | DE2127910C3 (en) |
| FR (1) | FR2140230B1 (en) |
| GB (1) | GB1375623A (en) |
| HU (1) | HU170932B (en) |
| IT (1) | IT959048B (en) |
| LU (1) | LU65456A1 (en) |
| NL (1) | NL7207549A (en) |
| NO (1) | NO131897B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2440222A1 (en) * | 1978-10-31 | 1980-05-30 | Air Ind | Regenerating particulate adsorbent material - charged with volatile cpds. of different thermal stabilities, partic. particles of alumina which have adsorbed tars and fluorinated cpds. |
| EP0011027B1 (en) * | 1978-10-31 | 1984-02-15 | Air Industrie | Process for treating an adsorbent material in the form of particles loaded with at least two volatile compounds of differing thermal stability |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH203741A (en) * | 1938-01-28 | 1939-03-31 | Aluminium Ind Ag | Process for processing the mass obtained from the exhaust gases of aluminum furnaces. |
| GB836282A (en) * | 1957-03-21 | 1960-06-01 | Wheelabrator Corp | Method and apparatus for the removal or recovery of vapours from air or other gases |
| AT290463B (en) * | 1968-02-01 | 1971-06-11 | Elektrokemisk As | Process for the recovery of fluorine from carbonaceous waste |
-
1971
- 1971-06-04 DE DE2127910A patent/DE2127910C3/en not_active Expired
-
1972
- 1972-05-31 AT AT468572A patent/AT322224B/en not_active IP Right Cessation
- 1972-06-02 NL NL7207549A patent/NL7207549A/xx not_active Application Discontinuation
- 1972-06-02 CH CH820472A patent/CH565865A5/xx not_active IP Right Cessation
- 1972-06-02 GB GB2595772A patent/GB1375623A/en not_active Expired
- 1972-06-02 HU HUAU000277 patent/HU170932B/en unknown
- 1972-06-02 FR FR7220023A patent/FR2140230B1/fr not_active Expired
- 1972-06-02 NO NO1974/72A patent/NO131897B/no unknown
- 1972-06-02 LU LU65456D patent/LU65456A1/xx unknown
- 1972-06-02 BE BE784298A patent/BE784298A/en not_active IP Right Cessation
- 1972-06-03 IT IT68761/72A patent/IT959048B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| HU170932B (en) | 1977-10-28 |
| NO131897B (en) | 1975-05-12 |
| FR2140230A1 (en) | 1973-01-12 |
| DE2127910C3 (en) | 1984-08-02 |
| DE2127910B2 (en) | 1979-01-11 |
| AT322224B (en) | 1975-05-12 |
| CH565865A5 (en) | 1975-08-29 |
| DE2127910A1 (en) | 1972-12-28 |
| FR2140230B1 (en) | 1978-03-31 |
| LU65456A1 (en) | 1972-10-05 |
| IT959048B (en) | 1973-11-10 |
| BE784298A (en) | 1972-10-02 |
| NL7207549A (en) | 1972-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed |