CA1295816C - Process, an apparatus and a chemical absorption filter for purifying inhaled air - Google Patents
Process, an apparatus and a chemical absorption filter for purifying inhaled airInfo
- Publication number
- CA1295816C CA1295816C CA000527008A CA527008A CA1295816C CA 1295816 C CA1295816 C CA 1295816C CA 000527008 A CA000527008 A CA 000527008A CA 527008 A CA527008 A CA 527008A CA 1295816 C CA1295816 C CA 1295816C
- Authority
- CA
- Canada
- Prior art keywords
- layer
- filter
- chemical absorption
- process according
- absorption filter
- 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 - Lifetime
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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/70—Organic halogen compounds
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
-
- 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
-
- 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
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention relates to a process, an apparatus, and a chemical absorption filter for purifying inhaled air, in particular, by the elimination of odours, smoke, dust, baccilli, viruses, germs, toxic substances, etc., in which the inhaled air that is to be purified is passed through a chemical absorption filter.
The present invention relates to a process, an apparatus, and a chemical absorption filter for purifying inhaled air, in particular, by the elimination of odours, smoke, dust, baccilli, viruses, germs, toxic substances, etc., in which the inhaled air that is to be purified is passed through a chemical absorption filter.
Description
~51~6 It is a known fact that bed-ridden patients generate a great deal of odour, which affects their environment. To some degree, ~ bacteria are also released with these odours. There have been h ~ many proposals made concerning the construction of equipment that :~ .
can~be installed directly beneath the bed covers in~order to eliminate these odours. In a number of cases, ultraviolet incandescent tubes have been used to eliminate these odours and !
at the same time to destroy bacteria, and in some instances, extremely~costly filter systems have been built.
: , :
n~order to achieve~ a-n~equally ef~fective sbso~rption of odours snd a~bacteria-reducing effect~by using the~most simple means, the present invention proposes that the filter packets are in the form of~;~a~lkaline masses~;such~as alkaline earth compounds,~and that~these alternate with filter packets that are formed as scidic mssses, and that these~packets also~contain metallic ::: ::
' ~ ..
: ' .
salts, preferably iron salts. It has been found that the alternating effect obtained by passing the air throu~h acidic and alkaline and then once agaln through acidic and alkaline masses or vice versa, brings about a very high level of odour elimination and at the same time, a reduction of bacteria that are of necessity drawn into the system with the air, e.~., in the case of a bed-ridden patlent. Odour absorbing and bactericidal filter masses are to be so grouped that they consist of an alternating arrangement of alkaline and acldic masses, or vice versa and, as a matter of principl0, a neutralizing mass of activated carbon with a dust filter is arranged in the final position.
It is preferred that, viewed in the direction of flow of the inhaled air which is to be purified, the chemical absorption filter incorporates the following layers:
A first layer of soda lime, followed by a second layer consisting of expanded material with a high level of capillarity, this materlal being lmpregnated with a mono- or poly-basis carboxylic acid; then a third~layer, also consisting of expanded material with a high level of capillarity, that is impregnated with alkaline iron-III-hydroxide solution (Fe(OH)3) and then, as a fourth layer, a layer of activated carbon.
, r~
This sequence of layers is arranged either on the suction or the pressure side of a fan, or else the fan can be arranged within this sequence of chemical absorption filters such that the first layers are on the suction side of the fan and the last layer is always an activated carbon layer.
It has been found that this is the most effective arrangement for eliminating fecal odours whilst at the same time destroying baccilli and/or germs, pollen, fungi and tobacco smoke, with the individual chemical absorption filter mas~es being separated from each other by filter fleece, with fleece filters being arranged on the suction and the outlet sides so as to define the filter masses relative to the inlet or pressure sides.
It is known that ceilings that keep the air free of germs can be installed, particularly in operating rooms, and the air circulation for the operating room takes place above these. When this is done, ultraviolet lights are frequently used to destroy germs in the air. The disadvantage of such a system lies in the fact that the ultraviolet light that destroys the germs simultaneously forms radical oxygen. This radical oxygen is extremely reactive and can generate undesirable and hazardous compounds, e.g., NO-2. ~
For thls reason, the present invention proposes chemical absorption fll~ters~for air purification sy~stems used for rooms .
',~-. , ::
. '; ' ' :~L2~ 6 that are used, for example, for sick beds and to use these chemical absorption filters to act against undesirable, chemically formed materials from these beds beneath the ceiling, in which connection, as has already been described, the filter masses consist of alkaline or earth alkaline compounds or as acidic masses or compounds of metallic salts, a number of these being combined, depending on the task to be performed and the intensity of the odour and bacteria, so as to be used as filter ceilings, with the last neutralizing mass through which the air Plows being a layer oP activated carbon.
It is known that baccilli, viruses, fungi and germs can be rendered harmless by ozonization and/or ionization. In addition, there is the fact that an additional agglomeration of aerosol particles and/or dust particles can be formed by ionization. The disadvantage of tùis combination technique lies in the fact~that traces of ozone that pass through the system can be harmful to both humans and animals and arrangement in small separator devices can be problematic.
:; ~ :
For thls reason, the present invention proposes that the inhaled air that is to~be pur1fied is passed through a sterilizing irradlatlon section before it reaches the chemical absorption filter.
:
: :
~-z~
The present invention also covers a chemical absorption filter to remove carcenogenic material such as dioxin, furan, formaldehydes, PAH's, benzpyrene and other toxic materials.
According to the present invention, it is proposed that perlite or other expanded materials be used as the filter masses, these being preferably impregnated with propylene glycol. It is further proposed that a further layer, which is preferably also made up of expanded mate~rial be used as preferably the last layer through which the air passes, and that this be moistened with a solutlon of medical soap, e.g., if carcenogenic substances and tobacco smoke are also present.
Embodiments of the invention are described in greater detail below on the basis of the drawlngs appended hereto. These drawings are as follows:
Fiyure 1: is a side view of a case-like purification apparatus;
Figure 2: shows a chemical absorption ceiling for a room; and Figure 3: is a cross section view of a further embodiment of a pure air apparatus.
/gu~e 1~, ~he appa~atus Is nu.bereu 1, the chemical ab~orpeion paok~ on~the suction slde lS~ number~ed 2; the fan is numbered 3, 4 indicates~the pressure side arrangement of a chemical absorption pack; S indicates the~outlet side~of the chemical absorption .
`. ~
`: `: : `
filter case; 6 indicates an air hose; and 7 indicates the position of the electronic monitoring and control system.
According to the present invention, in order to reduce noise, the fan 3 is arranged on the suction and/or pressure side between two chemical absorption packs 2, 4, so that these chemical absorption masses 2, 4 perform a dual function, namely the elimination of odour and/or bacteria and simultaneously, accoustic insulation on the suction and pressure sides.
The chemical absorption pack consists of several layers: a first layer of soda lime; this is followed by a second layer consisting of expanded material of high capillarity, and this layer is ; lmpregnated with a mono- or poly-basis carboxylic acid; a third layerr which also consists of expanded material of high capillarity, and impregnated with alkaline iron-III-hydroxide solution (Fe(OH)3) is followed by a fourth layer of activated charcoal~
In figure 2, 11 indicates a room; the upper ceiling is numbered 12;~13 indlcates~the sterilization lamps; and 14 indicates~the su~spended chemical absorption filter pack with a subsequent high performànce filter to remove suspended matter.
. ~ :
.
.
In the version that is shown in figure 3, 21 indicates the suction line in a pure air device; 22 is a coarse filter; and 23 indicates the ozonization section which preceeds a fan 24 in which connection, according to the present invention, this arrangement ahead of the fan 24 provides for intensive contact between the ozone and the fan 24; on the outlet side of the fan 24, within an area 25 through which the air flows, there is also an ionization section 26 after the ozonization section 23, so that within this area the baccilli, germs, Eungi, viruses and so forth that have previously been destroyed by the ozon:ization are agglomerated with the dust particles and in the agglomerated (enlarged) range of grain sizes, the number of particles are trapped in the following chemical absorption filter 27 with the greatest possible effect, in which connection, according to the present invention, the chemical absorption filter is not only designed so as to remove the sterile bacteria, fungi, viruses, and dust, but also fulfills a simultaneous safety function in ;
that it neutralizes any stray ozone.
Accordlng to .the present~invention; this has been achieved in that within the chemical absorption filter pack there are, ~amongst others, such known chemical absorption layers as ~; activ~ated carhon, soda~ me, iron~ :dnd/or iron~ salts and/or:morass ore respectively, preferably at a concentration of 80~ Fe(OH)3, these being in the form of a bul:k-bed system.
:: .
:
, ~9t5~1 6 Also, according to the present invention, the sequence of this chemical absorption filter technology is arranged as follows:
1. an alkaline chemical absorption layer 28, consisting of morass iron ore, pH value 11-12, perlite impregnated with sodium-potassium carbonate, pH value also 11-12, or soda lime, also with a pH value of 11-12;
can~be installed directly beneath the bed covers in~order to eliminate these odours. In a number of cases, ultraviolet incandescent tubes have been used to eliminate these odours and !
at the same time to destroy bacteria, and in some instances, extremely~costly filter systems have been built.
: , :
n~order to achieve~ a-n~equally ef~fective sbso~rption of odours snd a~bacteria-reducing effect~by using the~most simple means, the present invention proposes that the filter packets are in the form of~;~a~lkaline masses~;such~as alkaline earth compounds,~and that~these alternate with filter packets that are formed as scidic mssses, and that these~packets also~contain metallic ::: ::
' ~ ..
: ' .
salts, preferably iron salts. It has been found that the alternating effect obtained by passing the air throu~h acidic and alkaline and then once agaln through acidic and alkaline masses or vice versa, brings about a very high level of odour elimination and at the same time, a reduction of bacteria that are of necessity drawn into the system with the air, e.~., in the case of a bed-ridden patlent. Odour absorbing and bactericidal filter masses are to be so grouped that they consist of an alternating arrangement of alkaline and acldic masses, or vice versa and, as a matter of principl0, a neutralizing mass of activated carbon with a dust filter is arranged in the final position.
It is preferred that, viewed in the direction of flow of the inhaled air which is to be purified, the chemical absorption filter incorporates the following layers:
A first layer of soda lime, followed by a second layer consisting of expanded material with a high level of capillarity, this materlal being lmpregnated with a mono- or poly-basis carboxylic acid; then a third~layer, also consisting of expanded material with a high level of capillarity, that is impregnated with alkaline iron-III-hydroxide solution (Fe(OH)3) and then, as a fourth layer, a layer of activated carbon.
, r~
This sequence of layers is arranged either on the suction or the pressure side of a fan, or else the fan can be arranged within this sequence of chemical absorption filters such that the first layers are on the suction side of the fan and the last layer is always an activated carbon layer.
It has been found that this is the most effective arrangement for eliminating fecal odours whilst at the same time destroying baccilli and/or germs, pollen, fungi and tobacco smoke, with the individual chemical absorption filter mas~es being separated from each other by filter fleece, with fleece filters being arranged on the suction and the outlet sides so as to define the filter masses relative to the inlet or pressure sides.
It is known that ceilings that keep the air free of germs can be installed, particularly in operating rooms, and the air circulation for the operating room takes place above these. When this is done, ultraviolet lights are frequently used to destroy germs in the air. The disadvantage of such a system lies in the fact that the ultraviolet light that destroys the germs simultaneously forms radical oxygen. This radical oxygen is extremely reactive and can generate undesirable and hazardous compounds, e.g., NO-2. ~
For thls reason, the present invention proposes chemical absorption fll~ters~for air purification sy~stems used for rooms .
',~-. , ::
. '; ' ' :~L2~ 6 that are used, for example, for sick beds and to use these chemical absorption filters to act against undesirable, chemically formed materials from these beds beneath the ceiling, in which connection, as has already been described, the filter masses consist of alkaline or earth alkaline compounds or as acidic masses or compounds of metallic salts, a number of these being combined, depending on the task to be performed and the intensity of the odour and bacteria, so as to be used as filter ceilings, with the last neutralizing mass through which the air Plows being a layer oP activated carbon.
It is known that baccilli, viruses, fungi and germs can be rendered harmless by ozonization and/or ionization. In addition, there is the fact that an additional agglomeration of aerosol particles and/or dust particles can be formed by ionization. The disadvantage of tùis combination technique lies in the fact~that traces of ozone that pass through the system can be harmful to both humans and animals and arrangement in small separator devices can be problematic.
:; ~ :
For thls reason, the present invention proposes that the inhaled air that is to~be pur1fied is passed through a sterilizing irradlatlon section before it reaches the chemical absorption filter.
:
: :
~-z~
The present invention also covers a chemical absorption filter to remove carcenogenic material such as dioxin, furan, formaldehydes, PAH's, benzpyrene and other toxic materials.
According to the present invention, it is proposed that perlite or other expanded materials be used as the filter masses, these being preferably impregnated with propylene glycol. It is further proposed that a further layer, which is preferably also made up of expanded mate~rial be used as preferably the last layer through which the air passes, and that this be moistened with a solutlon of medical soap, e.g., if carcenogenic substances and tobacco smoke are also present.
Embodiments of the invention are described in greater detail below on the basis of the drawlngs appended hereto. These drawings are as follows:
Fiyure 1: is a side view of a case-like purification apparatus;
Figure 2: shows a chemical absorption ceiling for a room; and Figure 3: is a cross section view of a further embodiment of a pure air apparatus.
/gu~e 1~, ~he appa~atus Is nu.bereu 1, the chemical ab~orpeion paok~ on~the suction slde lS~ number~ed 2; the fan is numbered 3, 4 indicates~the pressure side arrangement of a chemical absorption pack; S indicates the~outlet side~of the chemical absorption .
`. ~
`: `: : `
filter case; 6 indicates an air hose; and 7 indicates the position of the electronic monitoring and control system.
According to the present invention, in order to reduce noise, the fan 3 is arranged on the suction and/or pressure side between two chemical absorption packs 2, 4, so that these chemical absorption masses 2, 4 perform a dual function, namely the elimination of odour and/or bacteria and simultaneously, accoustic insulation on the suction and pressure sides.
The chemical absorption pack consists of several layers: a first layer of soda lime; this is followed by a second layer consisting of expanded material of high capillarity, and this layer is ; lmpregnated with a mono- or poly-basis carboxylic acid; a third layerr which also consists of expanded material of high capillarity, and impregnated with alkaline iron-III-hydroxide solution (Fe(OH)3) is followed by a fourth layer of activated charcoal~
In figure 2, 11 indicates a room; the upper ceiling is numbered 12;~13 indlcates~the sterilization lamps; and 14 indicates~the su~spended chemical absorption filter pack with a subsequent high performànce filter to remove suspended matter.
. ~ :
.
.
In the version that is shown in figure 3, 21 indicates the suction line in a pure air device; 22 is a coarse filter; and 23 indicates the ozonization section which preceeds a fan 24 in which connection, according to the present invention, this arrangement ahead of the fan 24 provides for intensive contact between the ozone and the fan 24; on the outlet side of the fan 24, within an area 25 through which the air flows, there is also an ionization section 26 after the ozonization section 23, so that within this area the baccilli, germs, Eungi, viruses and so forth that have previously been destroyed by the ozon:ization are agglomerated with the dust particles and in the agglomerated (enlarged) range of grain sizes, the number of particles are trapped in the following chemical absorption filter 27 with the greatest possible effect, in which connection, according to the present invention, the chemical absorption filter is not only designed so as to remove the sterile bacteria, fungi, viruses, and dust, but also fulfills a simultaneous safety function in ;
that it neutralizes any stray ozone.
Accordlng to .the present~invention; this has been achieved in that within the chemical absorption filter pack there are, ~amongst others, such known chemical absorption layers as ~; activ~ated carhon, soda~ me, iron~ :dnd/or iron~ salts and/or:morass ore respectively, preferably at a concentration of 80~ Fe(OH)3, these being in the form of a bul:k-bed system.
:: .
:
, ~9t5~1 6 Also, according to the present invention, the sequence of this chemical absorption filter technology is arranged as follows:
1. an alkaline chemical absorption layer 28, consisting of morass iron ore, pH value 11-12, perlite impregnated with sodium-potassium carbonate, pH value also 11-12, or soda lime, also with a pH value of 11-12;
2. a subsequent layer 29, consisting of expanded bodies, preferably expanded calcium-aluminium silicate and/or perlite, impregnated with iron-III-/iron-II-salts; iron ammonium sulphate salts can also be used;
3. a subsequent layer 30, consisting of a neutralizing layer, ~ preferably activated chaFcoal.
: The layer 29 is in a pH value sequence of 1-2, and the layer 30 is present as a neutralizing.bulk-bed mass. The layer 30 is followed by a high performance fine dust filter layer 31.
:` : : ~ : : ~ :
: : ~
... . .
: The layer 29 is in a pH value sequence of 1-2, and the layer 30 is present as a neutralizing.bulk-bed mass. The layer 30 is followed by a high performance fine dust filter layer 31.
:` : : ~ : : ~ :
: : ~
... . .
Claims (13)
1. A process for purifying inhaled air, in particular by the elimination of odours, smoke, dust, baccilli, viruses, germs and toxic substances, and so forth, in which the inhaled air which is to be purified is passed through a chemical absorption filter, characterized in that the inhaled air that is to be purified passes through a plurality of layers of the chemical absorption filter in the direction of flow, these consisting alternately of alkaline and acidic masses, and then passes through a filter layer consisting of a neutralizing mass.
2. A process according to claim 1, characterized in that the first filter layer is alkaline.
3. A process according to claim 1, characterized in that activated charcoal is used as the neutralizing mass.
4. A process according to claim 1, characterized in that the composition and/or selection of the individual layers of the chemical absorption filter is effected depending on the component elements that are to be removed from the inhaled air.
5. A process according to claim 1, characterized in that prior to reaching the chemical absorption filter the inhaled air that is to be purified is passed through a sterilizing irradiation section.
6. An apparatus for carrying out the process according to any one of claims 1 to 5, characterized in that the chemical ab-sorption filter is combined with an aspirator fan so as to form a purification apparatus.
7. An apparatus for carrying out the process according to any one of claims 1 to 5, characterized in that the chemical ab-sorption filter is built up in layers as follows:
A soda lime layer; a subsequent layer consisting of granular bodies of high capillarity that are impregnated with a mono- and/or poly-basis carboxylic acid; a further layer, also consisting of expanded material of high capillarity, impregnated with alkaline iron-III-hydroxide solution (Fe(OH)3); an activated carbon layer, in which connection the individual layers are arranged so as to be separated from each other with dust filter fleece.
A soda lime layer; a subsequent layer consisting of granular bodies of high capillarity that are impregnated with a mono- and/or poly-basis carboxylic acid; a further layer, also consisting of expanded material of high capillarity, impregnated with alkaline iron-III-hydroxide solution (Fe(OH)3); an activated carbon layer, in which connection the individual layers are arranged so as to be separated from each other with dust filter fleece.
8. An apparatus for completing the process according to any one of claims 1 to 5, characterized in that the fan is so arranged between a suction and a pressure side filter pack arrangement that the suction and pressure side simultaneously act as suction side acoustic dampers and pressure side accoustic dampers in which connection the last chemical absorption filter layer on the outlet side is formed as an activated carbon layer that is defined by means of a fleece filter layer.
9. An apparatus for completing the process according to any one of claims 1 to 5, characterized in that the neutralizing layer of the chemical absorption filter is followed by a high perform-ance filter to remove suspended particles.
10. An apparatus for completing the process according to any one of claims 1 to 5, characterized in that the chemical absorp-tion filter is arranged in layers as follows:
An alkaline layer, preferably consisting of soda lime and/or expanded calcium-aluminum silicate or perlite or a similar porous bulk material with a high level of capillarity on its sur-face, impregnated with a sodium-calcium carbonate solution and/or morass iron ore (approximately 80% iron-III-hydroxide); these masses are in a pH value range of 11-12; a subsequent layer (29) also consisting of an expanded material having a highly capillary structure, impregnated with iron-III/iron-II-salts, in which con-nection iron ammonium sulphate (Mohr's salt) can be used; these masses are in the acidic range, preferably at a pH value of 1-2, and a neutralizing layer (30), preferably consisting of activated charcoal, that follows a fine dust layer (31).
An alkaline layer, preferably consisting of soda lime and/or expanded calcium-aluminum silicate or perlite or a similar porous bulk material with a high level of capillarity on its sur-face, impregnated with a sodium-calcium carbonate solution and/or morass iron ore (approximately 80% iron-III-hydroxide); these masses are in a pH value range of 11-12; a subsequent layer (29) also consisting of an expanded material having a highly capillary structure, impregnated with iron-III/iron-II-salts, in which con-nection iron ammonium sulphate (Mohr's salt) can be used; these masses are in the acidic range, preferably at a pH value of 1-2, and a neutralizing layer (30), preferably consisting of activated charcoal, that follows a fine dust layer (31).
11. An apparatus for completing the process according to any one of claims 1 to 5, characterized in that this is provided with a suction line followed by a coarse filter, after which there is an ozonization section with a fan, this arrangement opening out on the exit side of the fan into a chamber in which there is an ioni-zation section, this in turn opens into a multi-layer chemical absorption filter that is arranged as a bulk-bed, in which connec-tion the individual beds are formed by dust filtering layers, preferably separated and installed one above the other.
12. A chemical absorption filter for completing the process according to any one of claims 1 to 5, in particular for removing carcenogenic substances such as dioxin, purane, formaldehydes, PAH's, benzpyrene and further toxic substances, characterized in that an expanded material, preferably perlite, that has been wett-ed with propylene glycol, is used as the absorbing mass.
13. A chemical absorption filter according to claim 12, characterized in that a layer which is also of expanded material follows the propylene glycol, this layer being impregnated with a solution of medical soap.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3600462.6 | 1986-01-10 | ||
| DE19863600462 DE3600462A1 (en) | 1986-01-10 | 1986-01-10 | Chemisorption filter package for the elimination of fickle odours, odours in sick rooms and tobacco smoke |
| DE19863612932 DE3612932A1 (en) | 1986-04-17 | 1986-04-17 | Filter compositions for air purification apparatuses |
| DEP3612932.1 | 1986-04-17 | ||
| DE19863615051 DE3615051A1 (en) | 1986-05-03 | 1986-05-03 | Process for the manufacture of a bactericidal chemisorption ceiling preferably for health clinics, hospitals, old peoples' homes and similar places of residence |
| DEP3615051.7 | 1986-05-03 | ||
| DEP3620666.0 | 1986-06-20 | ||
| DE19863620666 DE3620666A1 (en) | 1986-06-20 | 1986-06-20 | Multiply active, bactericidal-fungicidal chemisorption filter with integrated ozonisation and ionisation |
| DE19863636451 DE3636451A1 (en) | 1986-08-21 | 1986-10-25 | Chemisorption filter for separating off carcinogenic substances such as dioxin, furan, formaldehydes, PAHs, benzopyrene and other toxic substances |
| DEP3636451.7 | 1986-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1295816C true CA1295816C (en) | 1992-02-18 |
Family
ID=27510943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000527008A Expired - Lifetime CA1295816C (en) | 1986-01-10 | 1987-01-09 | Process, an apparatus and a chemical absorption filter for purifying inhaled air |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0230875B1 (en) |
| JP (1) | JPH0795B2 (en) |
| AU (1) | AU590820B2 (en) |
| CA (1) | CA1295816C (en) |
| DE (1) | DE3768967D1 (en) |
| ES (1) | ES2022152B3 (en) |
| HU (1) | HU201138B (en) |
| PL (1) | PL151857B1 (en) |
| WO (1) | WO1987004233A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5352647A (en) * | 1990-05-02 | 1994-10-04 | Ftu Gmbh | Composition for separating out noxious substances from gases and exhaust gases |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2557674Y2 (en) * | 1988-12-29 | 1997-12-10 | 株式会社島津製作所 | Breathing gas supply system |
| DE4200398C2 (en) * | 1992-01-10 | 1994-09-22 | Hoelter Heinz | Process for the bactericidal and fungicidal design of ventilation ducts |
| DE4425658C1 (en) * | 1994-07-20 | 1995-10-26 | Karlsruhe Forschzent | Absorption of poly:halogenated cpds. from refuse incinerator flue gas |
| KR20060126458A (en) * | 2003-10-20 | 2006-12-07 | 스미노에오리모노가부시끼가이샤 | Deodorizing filter |
| CA2621180A1 (en) | 2005-09-01 | 2007-03-08 | Megair Ltd. | Method and apparatus for treating biologically contaminated air |
| CN101622034B (en) | 2007-03-09 | 2013-06-12 | 斯特拉塔产品全球有限责任公司 | Apparatus, system and method for cleaning air |
| AU2009219681A1 (en) | 2008-02-28 | 2009-09-03 | Megair Ltd. | Apparatus and method for air treatment and sanitization |
| JP2011021869A (en) * | 2009-07-18 | 2011-02-03 | Nisshin Denki:Kk | Ventilated cigarette smoke detoxification device |
| CN107899146A (en) * | 2017-11-15 | 2018-04-13 | 北京欧美中科学技术研究院 | A kind of flexible demifacet type chemical experiment gas mask |
| CN108295396A (en) * | 2018-01-26 | 2018-07-20 | 北京欧美中科学技术研究院 | A kind of novel filter poison box of chemical experiment breathing mask |
| WO2020132970A1 (en) * | 2018-12-26 | 2020-07-02 | 广州安捷生物安全科技股份有限公司 | Medical suspending apparatus and cantilever thereof, and purification apparatus |
| US11976847B2 (en) | 2022-03-22 | 2024-05-07 | Danvita Thermal LLC | Air purification system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE622105A (en) * | 1961-09-04 | |||
| US3502429A (en) * | 1965-04-02 | 1970-03-24 | Ionics | Regeneration of an enclosed atmosphere |
| FR2142664A1 (en) * | 1971-06-23 | 1973-02-02 | France Etat | Composite flexible sheet - for filtering contaminated air for liquids, aerosol particles or chemicals |
| DE3003413A1 (en) * | 1980-01-31 | 1981-08-06 | Ing.(grad.) Heinz 4390 Gladbeck Hölter | Air cleaning system for living room - sucks air through gel, chemisorption and carbon mon:oxide catalyst layers |
-
1987
- 1987-01-07 WO PCT/EP1987/000007 patent/WO1987004233A1/en unknown
- 1987-01-07 AU AU68905/87A patent/AU590820B2/en not_active Ceased
- 1987-01-07 ES ES87100106T patent/ES2022152B3/en not_active Expired - Lifetime
- 1987-01-07 EP EP87100106A patent/EP0230875B1/en not_active Expired - Lifetime
- 1987-01-07 JP JP62500926A patent/JPH0795B2/en not_active Expired - Lifetime
- 1987-01-07 DE DE8787100106T patent/DE3768967D1/en not_active Expired - Lifetime
- 1987-01-07 HU HU87887A patent/HU201138B/en unknown
- 1987-01-09 CA CA000527008A patent/CA1295816C/en not_active Expired - Lifetime
- 1987-01-09 PL PL1987263609A patent/PL151857B1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5352647A (en) * | 1990-05-02 | 1994-10-04 | Ftu Gmbh | Composition for separating out noxious substances from gases and exhaust gases |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0230875A1 (en) | 1987-08-05 |
| JPH0795B2 (en) | 1995-01-11 |
| AU590820B2 (en) | 1989-11-16 |
| WO1987004233A1 (en) | 1987-07-16 |
| HU201138B (en) | 1990-09-28 |
| ES2022152B3 (en) | 1991-12-01 |
| JPS63502400A (en) | 1988-09-14 |
| DE3768967D1 (en) | 1991-05-08 |
| PL151857B1 (en) | 1990-10-31 |
| HUT44096A (en) | 1988-01-28 |
| AU6890587A (en) | 1987-07-28 |
| PL263609A1 (en) | 1988-04-14 |
| EP0230875B1 (en) | 1991-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |