EP0954368A1 - Method and installation for eliminating gaseous organic substances in the air - Google Patents
Method and installation for eliminating gaseous organic substances in the airInfo
- Publication number
- EP0954368A1 EP0954368A1 EP98946226A EP98946226A EP0954368A1 EP 0954368 A1 EP0954368 A1 EP 0954368A1 EP 98946226 A EP98946226 A EP 98946226A EP 98946226 A EP98946226 A EP 98946226A EP 0954368 A1 EP0954368 A1 EP 0954368A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adsorber
- adsorbent
- microwave
- air
- organic substances
- 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- Withdrawn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
- 239000000126 substance Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 24
- 238000009434 installation Methods 0.000 title abstract description 4
- 230000003197 catalytic effect Effects 0.000 claims abstract description 3
- 238000003795 desorption Methods 0.000 claims description 32
- 239000003463 adsorbent Substances 0.000 claims description 31
- 239000010457 zeolite Substances 0.000 claims description 27
- 229910021536 Zeolite Inorganic materials 0.000 claims description 18
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 18
- 239000003054 catalyst Substances 0.000 claims description 16
- 230000003647 oxidation Effects 0.000 claims description 14
- 238000007254 oxidation reaction Methods 0.000 claims description 14
- 230000002209 hydrophobic effect Effects 0.000 claims description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 7
- 238000011045 prefiltration Methods 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 claims description 4
- 238000011069 regeneration method Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 150000002894 organic compounds Chemical class 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 206010001497 Agitation Diseases 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004887 air purification Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- B01D53/02—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
- B01D53/06—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 with moving adsorbents, e.g. rotating beds
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3408—Regenerating or reactivating of aluminosilicate molecular sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
- B60H3/0608—Filter arrangements in the air stream
- B60H3/0633—Filter arrangements in the air stream with provisions for regenerating or cleaning the filter element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/90—Cleaning of purification apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/25—Coated, impregnated or composite adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40077—Direction of flow
- B01D2259/40081—Counter-current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/40094—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating by applying microwaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
- B01D2259/4575—Gas separation or purification devices adapted for specific applications for use in transportation means in aeroplanes or space ships
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
- B60H2003/0691—Adsorption filters, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
- B64D2013/0603—Environmental Control Systems
- B64D2013/0651—Environmental Control Systems comprising filters, e.g. dust filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
Definitions
- the invention relates to a method for removing gaseous organic substances from the air with an adsorbent in an adsorber, in which the adsorbent is regenerated by microwaves. It also relates to an installation for carrying out the method and the use of this installation.
- the desorption of regeneratively operated adsorption plants is usually carried out in the art with hot gas or steam vapor desorption. Since the energy input is coupled to the volume flow, it is only possible to concentrate the desorbate to a limited extent.
- the efficiency is particularly low for hot gas desorption, since the heat capacity of the air is low and the heat transfer between air and adsorbent is unfavorable. With decreasing pollutant concentration, the energy requirement per separated pollutant quantity increases. An energetically justifiable operation of such a system is therefore only possible to a limited extent.
- polar molecules especially water, absorb microwaves, it is known to water, but also others evaporate polar organic compounds, such as alcohols adsorbed on an adsorbent, with a microwave generator to regenerate the adsorbent.
- non-polar organic compounds cannot be removed in this way.
- the air also contains a number of non-polar or less polar organic pollutants, which are adsorbed by the adsorbent and must therefore be desorbed again during regeneration.
- nonpolar organic compounds in the air are alkanes or other aliphatic hydrocarbons and aromatic hydrocarbons, for example benzene.
- the object of the invention is to provide an effective, energetically favorable method for removing gaseous organic substances from the air.
- the adsorbed organic substances for the regeneration of the adsorbent are desorbed by irradiation with microwave energy.
- the energy input occurs either by direct excitation of the adsorbate (especially in the case of polar compounds such as water, ethanol or aldehydes) and / or by the adsorbent absorbing microwaves.
- the microwave-absorbing adsorbent itself is heated in the latter case, so that non-polar or slightly polar organic compounds are also evaporated, that is, desorbed.
- Zeolites in particular have proven to be suitable as adsorbents for air purification, namely hydrophobic zeolites, ie zeolites with a high silicon / aluminum molar ratio, while hydrophilic zeolites with a low silicon / aluminum molar ratio preferentially adsorb water and thus only a low adsorption capacity for the organic pollutants contained in the air, i.e. unsuitable for air purification.
- the microwave excitability of a zeolitic adsorbent is due to the ion conductivity of the exchangeable cations in zeolite.
- the ionic conductivity arises from the change of location of the relatively mobile cations in the zeolite lattice.
- the ion conductivity can be influenced, among other things, by the choice of the cations, the aluminum content of the lattice (module), the lattice type and the water content. Since the dipole character of the zeolite lattice also depends on the ionic conductivity. hangs, the microwave excitability of the zeolite can be specifically adjusted in this way.
- hydrophobic zeolites are suitable as adsorbents, but do not have sufficient microwave adsorption capacity. As has been shown, however, the microwave adsorption capacity of hydrophobic zeolites can be increased.
- the silicon / aluminum ratio of hydrophobic zeolites is to lower the silicon / aluminum ratio of hydrophobic zeolites.
- a commercially available hydrophobic zeolite has a silicon / aluminum ratio of approximately 100
- a commercially available hydrophilic zeolite has a silicon / aluminum ratio of approximately 1.
- the silicon / aluminum molar ratio of the zeolite should be at least 10, preferably at least 30 and less than 100, preferably at most 90, in order to obtain zeolites which on the one hand absorb microwaves and on the other hand are suitable as adsorbents.
- a commercially available hydrophilic zeolite can be treated with water vapor or a commercially available hydrophobic zeolite with silicon tetrachloride in order to remove the aluminum or replace it with silicon.
- the adsorbent loaded with the pollutants can, if it has sufficient microwave absorption capacity, be heated according to the invention directly by microwave excitation. It is but according to the invention it is also possible to use an adsorbent which itself does not have sufficient microwave absorption capacity, provided that there is a further solid in the adsorber, which in turn has a high microwave adsorption capacity and thus heats the adsorbent to a temperature which is sufficient to desorb the organic substances.
- the microwave absorbing solid can be, for example, a hydrophilic zeolite, activated carbon, a polymer or the like.
- the adsorbent can be mixed with the microwave absorbing solid.
- the adsorber can be filled with a mixture of a (microwave-insensitive) hydrophobic zeolite and a hydrophilic zeolite as a microwave-absorbing solid.
- the weight ratio of the hydrophilic to the hydrophobic zeolite in such a mixture is preferably 1:10 to 1:30.
- the water adsorbed from the ambient air can be excited very selectively by microwave energy.
- the water content of the loaded adsorbent can be adjusted by the mixing ratio of different zeolites (zeolite types, hydrophilic-hydrophobic). As a result, the energy input or the temperature level to be achieved can be set. Similar to hot water vapor desorption, the desorbed water displaces the non-polar substances, which cannot be directly excited by microwave energy, in the sense of displacement desorption.
- the energy is generated quickly and with the method according to the invention high efficiency for desorption. This enables fast and low-loss desorption.
- the frequency used for microwave desorption can be, for example, in the range from 100 MHz to 10 GHz; it is preferably 2.45 GHz.
- the desorption air in contrast to hot gas desorption, for example, is not a heat energy carrier. It can therefore be used in a relatively small amount. As a result, the desorbate is present in a high concentration and can therefore be favorably subjected to catalytic oxidation in terms of energy.
- the oxidation catalyst with which the adsorbed organic substances are oxidized can either be added directly to the adsorbent or the organic substances can be desorbed and oxidized in a catalyst separated from the adsorber.
- the organic substances are burned to carbon dioxide and water by the desorption air on the oxidation catalyst.
- the desorption air with the oxidized organic substances is therefore preferably returned to the adsorber in the circuit for desorption.
- the heat of combustion and the energy from convection from the adsorber into the desorption air is thus returned to desorption (heat recovery).
- the oxidation catalyst can be platinum or a platinum group metal, for example.
- the zeolite or the other adsorbent may contain platinum in the oxidation state 0 (metallic clusters). Platinum or the other oxidation catalyst also leads to a strong increase in the microwave absorption capacity of the adsorbent.
- the method according to the invention and the system according to the invention is intended in particular for cleaning the air in rooms used by people, in particular for cleaning air in the interior of motor vehicles, including airplanes, furthermore in buildings or shelters, and also for protecting contaminated outside air.
- a prefilter for particle separation is preferably used to pre-clean the air flow to be cleaned.
- the contamination of ventilation systems represents a not insignificant health risk.
- biological materials on the adsorbent reduce the adsorption performance.
- the microwave energy for irradiating the prefilter can originate from the microwave generator for irradiating the absorber, or a separate microwave generator can be used for irradiating the prefilter.
- the system then consists of an adsorber 1, a microwave unit 2 arranged on the adsorber 1 and a catalyst 3 arranged separately from the adsorber 1.
- the adsorber 1 is designed as a cylindrical body which has circular segment-shaped connections 5 and 8 or 6 and 7 on both sides.
- the adsorber 1 consists of sectors 9, which are separated from one another by radially extending partition walls 16.
- the adsorber 1 is rotatable about a cylinder axis 4 in the direction of the arrow 10. In this way, the sectors 9 are connected in succession to the connections 5 and 6 or 7 and 8.
- the opposing connections 5 and 6 serve for the passage of the air to be cleaned through the adsorber 1, that is for the entry of the air to be cleaned into or out of the adsorber 1, as shown by the arrows 20 and 21.
- the opposing connections 7 and 8 serve for the passage of the desorption air through the adsorber 1, that is to say for entry into and exit from the adsorber 1, as shown by the arrows 22 and 23.
- connections 5 to 8 and the adsorber 1 must be arranged rotatably relative to one another about the cylinder axis 4 The drawing shown, it is also possible to make the connections rotating and the adsorber 1 stationary.
- the catalyst 3 is connected via a line, which is illustrated by the arrow 23, to the outlet 8 for the desorption air.
- the organic substances oxidized to water and carbon dioxide in the catalyst 3 are fed back to the adsorber 1 with the desorption air with a blower 12 via the line 13.
- the desorption air circulated can be fed to the desorption air line represented by the arrow 22 or, as shown in the drawing, to a further segment-shaped connection 15 on the side of the adsorber 1, on which the connection 7 for the inflowing desorption air 22 is also arranged.
- the connection 15 is provided next to the connection 7, namely in the direction of rotation 10 of the adsorber 1 before the connection 7.
- the blower 12 can be omitted.
- the microwave unit 2 is designed to emit the microwave onto the sector 9 of the cylindrical adsorber 1, which connects the connections 7 and 8 for the passage of the desorption air.
- the microwave unit 2 can have an antenna 17 extending along the outside along the adsorber 1 with a reflector 16.
- the microwave generator 14 is arranged on the reflector 16.
- Another reflector 19 can be provided in the area of the axis of rotation 4 within the cylindrical adsorber 1. The volume portions of the oxidized desorbate discharged can be supplied to the cleaned air 21.
- the desorption air 22, 23 is guided in counterflow to the air 20, 21 to be cleaned.
- the microwave unit 2 can also be designed to be rotatable.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Biomedical Technology (AREA)
- Separation Of Gases By Adsorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19730292A DE19730292C1 (en) | 1997-07-15 | 1997-07-15 | Plant for the removal of gaseous organic substances from the air |
DE19730292 | 1997-07-15 | ||
PCT/DE1998/001920 WO1999003565A1 (en) | 1997-07-15 | 1998-07-09 | Method and installation for eliminating gaseous organic substances in the air |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0954368A1 true EP0954368A1 (en) | 1999-11-10 |
Family
ID=7835766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98946226A Withdrawn EP0954368A1 (en) | 1997-07-15 | 1998-07-09 | Method and installation for eliminating gaseous organic substances in the air |
Country Status (5)
Country | Link |
---|---|
US (1) | US6296823B1 (en) |
EP (1) | EP0954368A1 (en) |
JP (1) | JP2001500787A (en) |
DE (1) | DE19730292C1 (en) |
WO (1) | WO1999003565A1 (en) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
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US6296823B1 (en) | 2001-10-02 |
WO1999003565A1 (en) | 1999-01-28 |
JP2001500787A (en) | 2001-01-23 |
DE19730292C1 (en) | 1999-03-11 |
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