FR2225194A1 - Filter element for gas partic. as cigarette filter tip - uses contraction of gas passage to form condensate for absorption - Google Patents
Filter element for gas partic. as cigarette filter tip - uses contraction of gas passage to form condensate for absorptionInfo
- Publication number
- FR2225194A1 FR2225194A1 FR7313138A FR7313138A FR2225194A1 FR 2225194 A1 FR2225194 A1 FR 2225194A1 FR 7313138 A FR7313138 A FR 7313138A FR 7313138 A FR7313138 A FR 7313138A FR 2225194 A1 FR2225194 A1 FR 2225194A1
- Authority
- FR
- France
- Prior art keywords
- gas
- filter
- section
- tip
- cross
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/045—Tobacco smoke filters characterised by their shape or structure with smoke acceleration means, e.g. impact-filters
-
- 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
- B01D53/002—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 condensation
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)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
Tubular filter element for gases in which the gas inlet leads to a cross-section where the area available for passage of gass is suddenly reduced very considerably compared with the cross-section being presented in the form of very small holes (e. g. 4) through which gas is compressed as filaments from which droplets of condensate separate on the outlet side of the holes to be trapped in the retention zone of an absorbent pad of spongy material just downstream of the reduced cross-section. The filter is used for filtering condensable pollutants from fumes and gases, particularly as a filter-tip element for cigars, cigarettes, pipes and cigarette-holders to filter out noxious substances from burning tobacco. The element, or tip, is very cheaply made but highly efficient.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7313138A FR2225194A1 (en) | 1973-04-11 | 1973-04-11 | Filter element for gas partic. as cigarette filter tip - uses contraction of gas passage to form condensate for absorption |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7313138A FR2225194A1 (en) | 1973-04-11 | 1973-04-11 | Filter element for gas partic. as cigarette filter tip - uses contraction of gas passage to form condensate for absorption |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2225194A1 true FR2225194A1 (en) | 1974-11-08 |
Family
ID=9117801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7313138A Withdrawn FR2225194A1 (en) | 1973-04-11 | 1973-04-11 | Filter element for gas partic. as cigarette filter tip - uses contraction of gas passage to form condensate for absorption |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2225194A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112295377A (en) * | 2020-12-23 | 2021-02-02 | 国网河南省电力公司桐柏县供电公司 | Power equipment condensation dehydrating unit |
-
1973
- 1973-04-11 FR FR7313138A patent/FR2225194A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112295377A (en) * | 2020-12-23 | 2021-02-02 | 国网河南省电力公司桐柏县供电公司 | Power equipment condensation dehydrating unit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |