CN105188883A - Air purification device - Google Patents

Air purification device Download PDF

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Publication number
CN105188883A
CN105188883A CN201480026329.3A CN201480026329A CN105188883A CN 105188883 A CN105188883 A CN 105188883A CN 201480026329 A CN201480026329 A CN 201480026329A CN 105188883 A CN105188883 A CN 105188883A
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CN
China
Prior art keywords
cleaning unit
microwave
air
purifying part
air cleaning
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Granted
Application number
CN201480026329.3A
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Chinese (zh)
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CN105188883B (en
Inventor
李贤宰
李承吉
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ENBLON Co Ltd
Enbion Inc
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ENBLON Co Ltd
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    • 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
    • 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
    • B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
    • 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
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    • 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
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    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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  • Life Sciences & Earth Sciences (AREA)
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  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Catalysts (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

The present invention relates to an air purification device. The present invention comprises: a purifying member for adsorbing and purifying gaseous pollutants contained in the air introduced from the outside; and a desorption means for decomposing and desorbing the gaseous pollutants adsorbed on the purifying member, by microwave heating, wherein the purifying member comprises: an adsorbent for adsorbing the gaseous pollutants; a dielectric substance for absorbing the microwave; and an oxidation catalyst for oxidizing the adsorbed gaseous pollutants. According to the present invention, the gaseous pollutants contained in the polluted air introduced from the outside are continuously or intermittently adsorbed, desorbed and purified, and thus, the purifying member can be regenerated. Thus, the present invention has an effect of sustainedly maintaining adsorption efficiency of the purifying member and, at the same time, greatly improving the lifetime thereof.

Description

Air cleaning unit
Technical field
The present invention relates to a kind of air cleaning unit, more specifically, relate to a kind of air cleaning unit that greatly can improve purification efficiency to gas pollutant contained in the air entered from outside.
Background technology
In general, air cleaning unit is widely used as the means processing pollutant (such as bacterium, peculiar smell, VOC or harmful components etc.), for family, multipurpose facility or industrial site provide pleasant atmosphere.
The air cleaning unit with this characteristic primarily of multiple process particles such as dust or bacterium etc. filter and process the odor removal filter composition of gas pollutant of such as peculiar smell, VOC and harmful components etc.As the filter of process particle, main use utilize particle sieve effect filter and utilize the dielectric electrostatic filter of electrostatic.
In addition, as the odor removal filter of process gas pollutant, main use utilizes the Static Adsorption filter of active carbon and zeolite and uses the ozone oxidation filter etc. of ozone etc.
But when Static Adsorption filter, equilibrium adsorption ability can reduce along with the reduction of concentration.And, adsorbed by physical bond by the composition adsorbed, thus these compositions also can desorb again under the effect of external environment condition such as external temperature and concentration etc.In addition, Static Adsorption filter does not possess inner power of regeneration, so service life is also limited.
In addition, the ozone oxidation filter of ozone is used to be the system using ozone oxidation ability, so, although ozone oxidation filter can when without the need to changing filter Long-Time Service, but ozone is a kind of environmental contaminants, when unreacted ozone discharge is to time outside, ozone oxidation filter can cause the problem such as asthma, allergy.
Summary of the invention
The technical problem solved
There is provided the present invention in order to solve the problem.Target of the present invention is to provide a kind of air cleaning unit, even if after gas pollutant contained in the air introduced from outside carried out long-term purification, it still routinely can maintain purification efficiency.
In addition, target of the present invention be to provide a kind of can by the air cleaning unit for the flow needed for desorb adsorbate pollutant and minimum energy losses.
In addition, target of the present invention is to provide a kind of gas pollutant air cleaning unit of adsorbing and purifying that can be contained in inside is to the air introduced from outside, thus greatly reduces size and the manufacturing cost of air cleaning unit.
Technical scheme
In order to achieve the above object, the present invention includes: purifying part, for adsorbing gas pollutant contained in the air introduced from outside and purify; And desorb component, for being decomposed and desorb the gas pollutant be attracted in this purifying part by heating using microwave.Herein, this purifying part comprises: adsorbent, for adsorbed gas pollutant; Dielectric material, for absorbing microwave; And oxidation catalyst, for being oxidized by the gas pollutant adsorbed.
In the present invention, this purifying part can rotate off and on or continuously towards predetermined direction, and can be divided into: binding domain, for adsorbed gas pollutant; Desorbent zone, for by heating using microwave desorb by the gas pollutant adsorbed; And heat recovery region, for reclaiming the heat produced by heating using microwave.
This desorb component can comprise: microwave feeds component, for giving this desorbent zone supply microwave.
This air cleaning unit can comprise the desorption chamber for the air being introduced in heat recovery region being directed to desorbent zone in addition, and this desorption chamber can be arranged between this purifying part and this desorb component.
This desorption chamber can comprise in addition for preventing microwave feeds to the separator in heat recovery region.
This adsorbent can comprise at least one material being selected from the group that alumina (alumina), silica (silica), zeolite, alumina silicate (alumina-silica) and active carbon are formed.
This dielectric material can comprise and is selected from SiC, TiO that dielectric constant is at least 10 2, ZnO, CuO, NiO, V 2o 5, ferrite, graphite, ZnO 2and SiH 2at least one material of the group formed.
This oxidation catalyst can comprise at least one material being selected from the group that platinum, rhodium and palladium are formed, or is selected from least one material of the group that titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, silver, tungsten and gold are formed.
In order to promote the oxidation of adsorbed gas pollutant, this oxidation catalyst can comprise at least one material being selected from the group that active high platinum, rhodium and platinum are formed, or be selected from least one material of the group that III, IV, V, VI, VII, VIII, IX, X, XI and XII group 4 transition metal is formed, such as titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, silver, tungsten or gold.
This air cleaning unit can comprise the condenser for carrying out condensation to the air by desorbent zone in addition.
Technique effect
According to the present invention, gas pollutant contained in the contaminated air introduced from outside can by continuously or Adsorption and desorption and purification off and on, make this purifying part to regenerate.Therefore, the effect greatly extending its service life while that the present invention having the adsorption efficiency that can maintain purifying part constantly.
In addition, due to by the gas pollutant that adsorbs by heating using microwave desorb, so the present invention has the minimized effect of the flow needed for gas pollutant of desorb being adsorbed.
And absorption and the purification of gas pollutant contained in introduced air complete entirely in purifying part.Therefore, do not need extra purifier and the heater for maintaining this purifier temperature are installed.Therefore, the present invention has and greatly reduces the size of air cleaning unit and the effect of manufacturing cost thereof.
Accompanying drawing explanation
Fig. 1 is the block diagram of the formation schematically showing air cleaning unit described according to a first embodiment of the present invention;
Fig. 2 is the front view of purifying part shown in Fig. 1;
Fig. 3, Fig. 4 and Fig. 5 are the reference diagrams of the operation of the component of desorb shown in Fig. 1;
Fig. 6 is the plane of diagram desorption chamber;
Fig. 7 is the block diagram of the formation schematically showing air cleaning unit described according to a second embodiment of the present invention; And
Fig. 8 is the block diagram of the formation schematically showing air cleaning unit described according to a third embodiment of the present invention.
Detailed description of the invention
Hereinafter, the preferred embodiments of the present invention are described in detail with reference to accompanying drawing.The first, it will be noted that for identical composed component, even if they illustrate in various figures, but they need to have identical Reference numeral when adding Reference numeral to the composed component in every width figure.In addition, when explaining of the present invention, if it is determined that when may obscure purport of the present invention for the detailed description about knowing structure or function, this detailed description will be omitted.In addition, hereinafter, will the preferred embodiments of the present invention be explained, but technological thought of the present invention is not limited thereto, and all relevant technologies schemes that those skilled in the art can implement should be comprised.
Fig. 1 is the block diagram of the formation schematically showing air cleaning unit described according to a first embodiment of the present invention.
As shown in Figure 1, air cleaning unit 1 comprises purifying part 10 and desorb component 20.
Purifying part 10 is adsorbed gas pollutant contained in the air introduced from outside and purifies, and desorb component 20 provides energy to allow to make to be decomposed by the gas pollutant adsorbed in purifying part 10 and to adsorb by heating using microwave.Therefore, the harmless composition decomposited in gas pollutant and untreated composition are from purifying part 10 desorb.
Purifying part 10 of the present invention comprises: for the adsorbent of adsorbed gas pollutant; For absorbing the dielectric material of microwave; And the oxidation catalyst for being oxidized adsorbed gas pollutant.
In the present invention, this adsorbent comprises at least one material being selected from and having the group that the alumina of powerful absorption property, silica, zeolite, alumina-silica and active carbon are formed for gas pollutant, and this dielectric material comprises and is selected from carborundum (SiC), titanium oxide (TiO), zinc oxide (ZnO), cupric oxide (CuO), nickel oxide (NiO), the vanadic anhydride (V that dielectric constant is at least 10 2o 5), ferrite, graphite, zinc peroxide (ZnO 2) and SiH 2at least one material of the group formed.
In addition, in order to promote the oxidation of adsorbed gas pollutant, this oxidation catalyst can comprise at least one material being selected from the group that active high platinum, rhodium and platinum are formed, or be selected from least one material of the group that III, IV, V, VI, VII, VIII, IX, X, XI and XII group 4 transition metal is formed, such as titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, silver, tungsten or gold.
The gas pollutant that purifying part 10 is adsorbed is oxidized at low temperatures by this oxidation catalyst.Therefore, the gas pollutant adsorbed can be oxidized in the purifying part 10 being raised (such as, 50 DEG C to 300 DEG C) by microwave heating temperature.
In the present invention, purifying part 10 can have and is being coated at least one material in the above-mentioned oxidation catalyst on any molding, described any molding is included at least one material in above-mentioned adsorbent and at least one material in above-mentioned dielectric material, or at least one material in above-mentioned adsorbent, at least one material in above-mentioned dielectric material and at least one material in above-mentioned oxidation catalyst can be used to be molded.In this case, this purifying part 10 can be molded as any shape of similar foaming structure or honeycomb etc., to guarantee gas permeability.
In addition, purifying part 10 can have the adsorbent, dielectric material and the oxidation catalyst that are coated on and have on any support component of highly-breathable.In this case, this support component can be made up of metal foam or ceramic foam, or can be become with metal-molding system by the ceramic moulded bodies with honeycomb.And, can by metal or pottery being bent or extruding this support component molded.
The adsorbent, dielectric material and the oxidation catalyst that form purifying part 10 of the present invention can be provided by any method.Such as, adsorbent, dielectric material and oxidation catalyst can be mixed and be coated on this support component, or adsorbent and dielectric material can be mixed to prepare this support component and be coated with described oxidation catalyst on this support component.
Hereinafter with reference to Fig. 2, purifying part 10 is described.Hereinafter with reference to Fig. 3, Fig. 4 and Fig. 5, desorb component 20 is described.
In addition, although not shown, but air cleaning unit 1 of the present invention can comprise in addition: pretreatment filters, this pretreatment filters is for eliminating particulate pollutant contained in the air introduced from outside, and pretreatment filters described at least one is arranged in the front side of purifying part 10; And posttreatment filter, this posttreatment filter is for eliminating the remainder of particulate pollutant and the gas pollutant that may contain in the air by purifying part 10, and posttreatment filter described at least one is arranged in the rear side of purifying part 10.
In this case, this pretreatment filters can be air cleaner, medium filter (mediumfilter), HEPA filter or dielectric electrostatic filter, and this posttreatment filter can be active carbon filter and active carbon adheres to filter etc., or HEPA filter and dielectric filter.
Fig. 2 is the front view of the purifying part illustrated in Fig. 1, and Fig. 3, Fig. 4 and Fig. 5 are the reference diagrams of the operation that the component of desorb shown in Fig. 1 is shown, Fig. 6 is the plane of desorption chamber.
As shown in Figure 2, purifying part 10 rotates off and on or continuously towards predetermined direction.According to the rotation of purifying part 10, purifying part is divided into: binding domain d1, adsorbed gas pollutant in the plane in purifying part 10; Desorbent zone d2, for decomposing gas pollutant and desorb by heating using microwave; And heat recovery region d3, for reclaiming the heat that heating using microwave produces.
In the present invention, by heating using microwave, the temperature of desorbent zone d2 can operate to 50 DEG C to 300 DEG C, and the temperature of heat recovery region d3 can operate to 40 DEG C to 240 DEG C by heating using microwave.
When purifying part 10, gas pollutant is attracted on binding domain d1, and the gas pollutant then adsorbed in desorbent zone d2 is decomposed and desorb continuously or off and on by heating using microwave.Therefore, by adsorbed gas pollutant and make gas pollutant react and desorb realize repeatedly regenerate.
In addition, for purifying part 10, the heat produced in the d3 of heat recovery region by heating using microwave is recovered and cools.Therefore, the purification efficiency of purifying part 10 can obtain the maintenance that continues.
As shown in Figure 3 and Figure 4, the component 20 that dissociates can comprise microwave feeds component 21, for generation of microwave and by microwave feeds to binding domain d2.
Air cleaning unit 1 in the present invention can comprise in addition: desorption chamber 30, between purifying part 10 and microwave feeds component 21, for the air being introduced in heat recovery region d3 is directed to desorbent zone d2; And waveguide 40, between desorption chamber 30 and microwave feeds component 21, pass through for making the microwave being fed to desorbent zone d2 from microwave feeds component.
In this case, desorption chamber 30 can comprise separator 32 in addition, for preventing by the microwave feeds of waveguide 40 to heat recovery region d3.
Further, the operating process of desorb component 20 is explained in detail with reference to Fig. 3 and Fig. 4.
When the air a1 containing gas pollutant introduced from outside passes through the binding domain d1 of purifying part 10, gas pollutant is attracted on binding domain d1, is discharged to outside through the air a2 of purification.The gas pollutant that binding domain d1 adsorbs is rotated by the interval of purifying part 10 or continuous print and arrives on desorbent zone d2.
When microwave feeds component 21 is to desorbent zone d2 microwave radiation, microwave arrives desorbent zone d2 by waveguide 40 and desorption chamber 30.When the temperature of desorbent zone d2 is increased by microwave, the gas pollutant from desorbent zone d2 passes through desorption air a3 desorb.
In this case, contained in desorbent zone d2 oxidation catalyst accelerating oxidation reaction.Therefore, gas pollutant that desorbent zone adsorbs decomposes, and the gas pollutant of desorb Sum decomposition is discharged into outside becomes air a4 by desorbent zone d2.As mentioned above, oxidation catalyst of the present invention can promote the oxidation reaction of gas pollutant at low temperatures at such as 50 DEG C to 300 DEG C.
In addition, when passing through the heat recovery region d3 of purifying part 10 in the air a11 part contained in the air a1 of gas pollutant introduced from outside.Air a21 through reclaiming heat heating be directed into desorption chamber 30, and therefore, the air a21 through reclaiming heat heating to can be contained in desorption air a3 and to be supplied to desorbent zone d2.
As mentioned above, desorb component 20 by microwave heating the gas pollutant that adsorbs on the adsorbent forming purifying part 10 reacted and the reason of desorb as follows.
In the past, increase energy by temperature increase to gas pollutant reaction and the temperature such as 180 DEG C to 200 DEG C of desorb can be made by general heater such as heater or burner, process gas pollutant.In this method for purifying part indirect, the energy consumed in heater increases greatly.And, in order to flow to the energy of gas pollutant desorb, need a large amount of desorption air.
By contrast, in the method that applied microwave of the present invention heats, the surface of purifying part 10 is themselves directly heated.Therefore, do not need to consume too much energy, different from the conventional method by heating desorption air-lift unit purifying part temperature.In addition, in the past, need to supply enough desorption air flows to promote the temperature of purifying part.But in situation of the present invention, purifying part is themselves directly heated, therefore, the present invention can pass through the desorb that a small amount of flow (such as, relative to the flow in past 10% to 20%) has carried out gas pollutant.
In addition, contained in desorbent zone d2 oxidation catalyst accelerating oxidation reaction makes gas pollutant decompose.Therefore, different from conventional method, there is no need for carrying out pre-warmed additional catalyst purifier and air heating apparatus to catalytic conversion unit inside.Therefore, the size of air cleaning unit and manufacturing cost can reduce greatly.
In addition, as shown in Figure 5, air cleaning unit 1 of the present invention can comprise air heat part 50 in addition, air heat part 50 is for heating the air a21 containing the heat recovery region d3 by purifying part 10 in the air a11 part of gas pollutant introduced from outside, and air heat part 50 can be electric heater or burner.
In addition, as shown in Fig. 6 (a) He Fig. 6 (b), desorption chamber 30 can comprise separator 32 in addition, is fed to heat recovery region d3 for preventing the microwave being fed to desorbent zone d2 by waveguide 40.Preferably, the microwave feeds that separator 32 is made up of metal grill or metal stamping sheet to prevent from being fed to desorbent zone d2 to heat recovery region d3, and separator through heat recovery region d3 and desorption chamber 30 minimize when by be fed to desorbent zone d2 recovery heat heat air a21 by time air drag.Such as, preferably, for stopping that the pore size of each grid of the formation metal grill of microwave is 30mmx30mm or following.When metal grill, preferably, the diameter in the hole formed is 30mm or following.
Fig. 7 is the block diagram of the formation schematically showing air cleaning unit described according to a second embodiment of the present invention.
As shown in Figure 7, air cleaning unit 1a described according to a second embodiment of the present invention comprises: purifying part 10a, adsorbs gas pollutant contained in the air introduced from outside and purifies; And at least one desorb component 20a and 20b, the rear side of purifying part 10a is positioned at according to the dimension (dimension) of purifying part 10a.This desorb component microwave heats fixing purifying part off and on, is decomposed and the energy of desorb to provide the gas pollutant making to adsorb in purifying part.Therefore, the harmless components decomposited in gas pollutant and not processed composition can from purifying part desorbs.
Fig. 8 is the block diagram of the formation schematically showing air cleaning unit described according to a third embodiment of the present invention.
As shown in Figure 8, described according to a third embodiment of the present invention air cleaning unit 100 comprises purifying part 110, desorb component 120 and condenser 130.
In the case, with reference to above-mentioned Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, purifying part 110 and desorb component 120 are described.Therefore, will be omitted it describe in detail.
The air of condenser 130 to the desorbent zone d2 by purifying part 110 carries out condensation, and condenser 130 can be heat exchanger or cooler.
The operation of condenser 130 is described with reference to Fig. 8.
When the air a4 by desorbent zone d2 is incorporated into condenser 130 with heated condition, be recycled by condensation by the moisture in the air a4 of desorbent zone d2 with heated condition.And, be discharged to outside by the air a5 of condenser 130, or the air a6 part containing the untreated composition in gas pollutant is comprised in the air a1 introduced from outside, and is supplied to purifying part 10.
In this case, the reason comprising again condenser 130 except purifying part 110 and desorb component 120 is the heated air a4 being cooled through desorbent zone d2 in condenser 130, then the air a6 part in air is after the cooling period included in the air a1 introduced from outside, to supply air to purifying part 10.Therefore, because the air a11 part in the air a1 that introduces from outside is by heat recovery region d3, so the temperature of the heat recovery region d3 be heated by heating using microwave can effectively be reduced.
Although be disclose exemplary embodiment of the present invention for illustration purposes, those skilled in the art can understand various amendments under the prerequisite not departing from core feature of the present invention, interpolation and substitute and are fine.Therefore, should be understood that and provide above-described embodiment and appended diagram to be only used to illustrate, not represent and the technology of the present invention spirit is limited to above-described embodiment.In addition, scope of the present invention or spirit are not limited to above-described embodiment and appended diagram.Scope of the present invention is limited by claim, and all equivalents within the scope of claim technical spirit are all comprised in interest field of the present invention.

Claims (9)

1. an air cleaning unit, comprising:
Purifying part, for adsorbing gas pollutant contained in the air introduced from outside and purify; And
Desorb component, for being decomposed and desorb the described gas pollutant adsorbed in described purifying part by heating using microwave,
Wherein, described purifying part comprises:
Adsorbent, for adsorbing described gas pollutant;
Dielectric material, for absorbing microwave; And
Oxidation catalyst, for the described gas pollutant of oxidation-adsorption.
2. air cleaning unit according to claim 1, wherein, described purifying part rotates off and on or continuously towards predetermined direction, and described purifying part is divided into: binding domain, for adsorbing described gas pollutant; Desorbent zone, for carrying out desorb by the described gas pollutant of heating using microwave to absorption; And heat recovery region, for reclaiming the heat produced by heating using microwave.
3. air cleaning unit according to claim 2, wherein, described desorb component comprise for by described microwave feeds to the microwave feeds component of described desorbent zone.
4. air cleaning unit according to claim 2, comprise in addition: desorption chamber, described desorption chamber is used for the air being introduced in described heat recovery region to be directed to described desorbent zone, and described desorption chamber is arranged between described purifying part and described desorb component.
5. air cleaning unit according to claim 4, wherein, described desorption chamber comprises separator in addition, and described separator is used for preventing described microwave feeds to described heat recovery region.
6. air cleaning unit according to claim 1, wherein, described adsorbent comprises at least one material being selected from the group that alumina, silica, zeolite, alumina silicate and active carbon are formed.
7. air cleaning unit according to claim 1, wherein, described dielectric material comprises and is selected from SiC, TiO that dielectric constant is at least 10 2, ZnO, CuO, NiO, V 2o 5, ferrite, graphite, ZnO 2and SiH 2at least one material of the group formed.
8. air cleaning unit according to claim 1, wherein, described oxidation catalyst comprises at least one material being selected from the group that platinum, rhodium and palladium are formed, or be selected from least one material of the group that III, IV, V, VI, VII, VIII, IX, X, XI and XII group 4 transition metal is formed, such as titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, silver, tungsten or gold.
9. air cleaning unit according to claim 2, comprises: condenser in addition, for carrying out condensation to the air by described desorbent zone.
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