GB752803A - Method for the removal of fluorine from industrial gases - Google Patents
Method for the removal of fluorine from industrial gasesInfo
- Publication number
- GB752803A GB752803A GB3604/54A GB360454A GB752803A GB 752803 A GB752803 A GB 752803A GB 3604/54 A GB3604/54 A GB 3604/54A GB 360454 A GB360454 A GB 360454A GB 752803 A GB752803 A GB 752803A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gases
- lime
- stream
- fluorine
- recirculated
- 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
- 239000007789 gas Substances 0.000 title abstract 10
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052731 fluorine Inorganic materials 0.000 title abstract 2
- 239000011737 fluorine Substances 0.000 title abstract 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 4
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 4
- 239000004571 lime Substances 0.000 abstract 4
- 238000005245 sintering Methods 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 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
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 1
- 239000000571 coke Substances 0.000 abstract 1
- 238000005367 electrostatic precipitation Methods 0.000 abstract 1
- 239000003500 flue dust Substances 0.000 abstract 1
- 150000002222 fluorine compounds Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000013618 particulate matter Substances 0.000 abstract 1
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
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/22—Fluorides
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
- B04C3/04—Multiple arrangement thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
Calcium fluoride and silicofluoride are formed in the removal of fluorine and gaseous or solid fluorine compounds from industrial gases by adding calcium oxide, hydroxide or carbonate (collectively referred to as "lime") to a stream of the gases, subjecting the lime-containing stream of gases to vortical action, skimming off a portion of the gases containing a higher concentration of particulate matter, returning said portion to the limecontaining stream of gases, and separating solid matter from the remaining portion of the gases subjected to vortical action, e.g. by electrostatic precipitation. Particularly when the gases arise from a sintering machine (e.g. of the pallet type used for sintering ferrous ores in admixture with coke, flue dust and limestone) and a portion e.g. 40 per cent of the gases is recirculated through said machine, coarser suspended particles may be separated from the lime-containing stream of gases, and recirculated with, if desired, additional lime. Suitable apparatus for producing vortical action is described and claimed in Specification 727,704 [Group II] to which the present Specification bears reference.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752803XA | 1953-03-19 | 1953-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB752803A true GB752803A (en) | 1956-07-18 |
Family
ID=22124673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3604/54A Expired GB752803A (en) | 1953-03-19 | 1954-02-08 | Method for the removal of fluorine from industrial gases |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB752803A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2919174A (en) * | 1956-09-12 | 1959-12-29 | Wheelabrator Corp | Method for removal of halides from gases |
| EP3246289A1 (en) * | 2016-05-19 | 2017-11-22 | 3M Innovative Properties Company | Generation of calcium fluoride from hf gas streams |
-
1954
- 1954-02-08 GB GB3604/54A patent/GB752803A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2919174A (en) * | 1956-09-12 | 1959-12-29 | Wheelabrator Corp | Method for removal of halides from gases |
| EP3246289A1 (en) * | 2016-05-19 | 2017-11-22 | 3M Innovative Properties Company | Generation of calcium fluoride from hf gas streams |
| WO2017201365A1 (en) * | 2016-05-19 | 2017-11-23 | 3M Innovative Properties Company | Generation of calcium fluoride from hf gas streams |
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