IL41810A - A gas filter for removing cadmium and cadmium compounds from gas,particularly intended for cigarettes,and a method for making such a filter - Google Patents
A gas filter for removing cadmium and cadmium compounds from gas,particularly intended for cigarettes,and a method for making such a filterInfo
- Publication number
- IL41810A IL41810A IL41810A IL4181073A IL41810A IL 41810 A IL41810 A IL 41810A IL 41810 A IL41810 A IL 41810A IL 4181073 A IL4181073 A IL 4181073A IL 41810 A IL41810 A IL 41810A
- Authority
- IL
- Israel
- Prior art keywords
- filter
- cadmium
- gas
- gas permeable
- permeable mass
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
-
- 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
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Gas Separation By Absorption (AREA)
- Filtering Materials (AREA)
Claims (5)
1. A method of manufacturing a filter for removing cadmium and cadmium compounds from gases, comprising the step of introducing a free powdery calcium salt substantially free from cadmium into a gas permeable mass, and forming the latter into a filter in a manner known per se.
2. , A method according to claim 1, wherein the gas permeable mass is cellulose or cellulose acetate.
3. 5. A method according to claim 1, wherein 1-75$» preferably 1-10%, calcium phosphate, calcium sulphate or calcium carbonate is introduced into the gas permeable mass.
4. A method according to claims 1-5» wherein the calcium salt is suspended in a volatile organic solvent, which suspension is introduced in the gas permeable mass and the solvent is allowed to evaporate.
5. A method according to claim 1-3» wherein the calcium salt is suspended in a stream of air which is allowed to penetrate the gas permeable mass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7203554A SE381820B (en) | 1972-03-20 | 1972-03-20 | PROCEDURE FOR MANUFACTURING A FILTER FOR REMOVING CADMIUM AND CADMIUM COMPOUNDS FROM GASES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL41810A0 IL41810A0 (en) | 1973-05-31 |
| IL41810A true IL41810A (en) | 1976-07-30 |
Family
ID=20262362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL41810A IL41810A (en) | 1972-03-20 | 1973-03-19 | A gas filter for removing cadmium and cadmium compounds from gas,particularly intended for cigarettes,and a method for making such a filter |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS496551A (en) |
| AR (1) | AR197493A1 (en) |
| AU (1) | AU5352373A (en) |
| BE (1) | BE797027A (en) |
| BR (1) | BR7301981D0 (en) |
| CH (1) | CH577799A5 (en) |
| DE (1) | DE2313468A1 (en) |
| DK (1) | DK141713B (en) |
| ES (1) | ES412805A1 (en) |
| FI (1) | FI54557C (en) |
| FR (1) | FR2177831B1 (en) |
| GB (1) | GB1424214A (en) |
| IL (1) | IL41810A (en) |
| IT (1) | IT981477B (en) |
| NL (1) | NL7303802A (en) |
| NO (1) | NO139628C (en) |
| SE (1) | SE381820B (en) |
| ZA (1) | ZA731813B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS513439A (en) * | 1974-06-28 | 1976-01-12 | Mitsubishi Electric Corp | KAKUGATAKANHIITOPAIPU |
| JPS5773004A (en) * | 1980-10-22 | 1982-05-07 | Sumitomo Chem Co Ltd | Preparation of saponified ethylene-vinyl acetate copolymer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2800908A (en) * | 1955-09-29 | 1957-07-30 | Blank Samuel | Treatment of tobacco smoke |
| US2940456A (en) * | 1956-02-08 | 1960-06-14 | Eastman Kodak Co | Fibrous tobacco smoke filter containing finely divided solids |
-
1972
- 1972-03-20 SE SE7203554A patent/SE381820B/en unknown
-
1973
- 1973-03-15 ZA ZA731813A patent/ZA731813B/en unknown
- 1973-03-16 IT IT7321802A patent/IT981477B/en active
- 1973-03-17 ES ES412805A patent/ES412805A1/en not_active Expired
- 1973-03-17 DE DE2313468A patent/DE2313468A1/en active Pending
- 1973-03-19 NL NL7303802A patent/NL7303802A/xx not_active Application Discontinuation
- 1973-03-19 GB GB1304673A patent/GB1424214A/en not_active Expired
- 1973-03-19 FI FI835/73A patent/FI54557C/en active
- 1973-03-19 NO NO1082/73A patent/NO139628C/en unknown
- 1973-03-19 IL IL41810A patent/IL41810A/en unknown
- 1973-03-20 BR BR731981A patent/BR7301981D0/en unknown
- 1973-03-20 CH CH406273A patent/CH577799A5/xx not_active IP Right Cessation
- 1973-03-20 DK DK151073AA patent/DK141713B/en unknown
- 1973-03-20 BE BE2052614A patent/BE797027A/en unknown
- 1973-03-20 JP JP48031520A patent/JPS496551A/ja active Pending
- 1973-03-20 AR AR247138A patent/AR197493A1/en active
- 1973-03-20 FR FR7309961A patent/FR2177831B1/fr not_active Expired
- 1973-03-20 AU AU53523/73A patent/AU5352373A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2313468A1 (en) | 1973-10-04 |
| FR2177831A1 (en) | 1973-11-09 |
| ES412805A1 (en) | 1976-06-01 |
| AU5352373A (en) | 1974-09-26 |
| GB1424214A (en) | 1976-02-11 |
| SE381820B (en) | 1975-12-22 |
| AR197493A1 (en) | 1974-04-15 |
| BE797027A (en) | 1973-07-16 |
| DK141713B (en) | 1980-06-02 |
| NL7303802A (en) | 1973-09-24 |
| FI54557C (en) | 1979-01-10 |
| ZA731813B (en) | 1973-12-19 |
| NO139628C (en) | 1979-04-18 |
| DK141713C (en) | 1980-10-27 |
| IL41810A0 (en) | 1973-05-31 |
| NO139628B (en) | 1979-01-08 |
| FR2177831B1 (en) | 1977-04-29 |
| JPS496551A (en) | 1974-01-21 |
| CH577799A5 (en) | 1976-07-30 |
| FI54557B (en) | 1978-09-29 |
| IT981477B (en) | 1974-10-10 |
| BR7301981D0 (en) | 1974-07-25 |
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