WO2019131124A1 - 気体処理装置 - Google Patents
気体処理装置 Download PDFInfo
- Publication number
- WO2019131124A1 WO2019131124A1 PCT/JP2018/045647 JP2018045647W WO2019131124A1 WO 2019131124 A1 WO2019131124 A1 WO 2019131124A1 JP 2018045647 W JP2018045647 W JP 2018045647W WO 2019131124 A1 WO2019131124 A1 WO 2019131124A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- opening
- gas
- wind
- shielding member
- excimer lamp
- Prior art date
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- 238000012545 processing Methods 0.000 title claims abstract description 142
- 239000007789 gas Substances 0.000 claims abstract description 322
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 26
- 239000001301 oxygen Substances 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 28
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical group O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 32
- 239000000126 substance Substances 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 15
- 238000000354 decomposition reaction Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 10
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 230000009257 reactivity Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 7
- 229910052753 mercury Inorganic materials 0.000 description 7
- 125000004430 oxygen atom Chemical group O* 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 231100000167 toxic agent Toxicity 0.000 description 5
- 239000003440 toxic substance Substances 0.000 description 5
- 238000000862 absorption spectrum Methods 0.000 description 4
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- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910052724 xenon Inorganic materials 0.000 description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 4
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 3
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000005281 excited state Effects 0.000 description 3
- 230000009969 flowable effect Effects 0.000 description 3
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- 241000282376 Panthera tigris Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
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- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- -1 steatite Inorganic materials 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Images
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
- B01D53/007—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 irradiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/12—Lighting means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/16—Connections to a HVAC unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
Definitions
- the present invention relates to a gas processing apparatus, and more particularly to an apparatus for processing a gas to be treated using an excimer lamp.
- Patent Document 1 discloses the configuration of an excimer lamp.
- This excimer lamp includes a tube (discharge vessel) made of silica glass that transmits ultraviolet light, and an electrode provided on the outer wall of the tube.
- xenon (Xe) gas as a discharge gas is enclosed.
- vacuum ultraviolet light of a wavelength of 200 nm or less, more specifically, a wavelength of 172 nm is irradiated.
- the vacuum ultraviolet light is irradiated to the air, to produce a gas containing ozone (O 3), has the advantages of deodorization and sterilization using a gas containing ozone (O 3) it can.
- the air may contain an offensive odor component that is difficult to be decomposed by ozone (O 3 ).
- One such malodorous component is formaldehyde.
- An object of the present invention is to provide a gas processing apparatus capable of efficiently decomposing the above-mentioned components which are hard to be decomposed by ozone (O 3 ).
- the gas processing apparatus is With a cylindrical case, An intake port for introducing a gas to be treated containing oxygen and moisture into the inside of the housing; An excimer lamp including a tube which is accommodated inside the housing, is filled with a discharge gas, and extends in a first direction; An exhaust port for discharging the gas to be processed, to which the ultraviolet light emitted from the excimer lamp is irradiated, to the outside of the housing; And a wind shield member arranged to surround the tube or sandwich the tube when viewed from the first direction, The air shielding member is at least a position between an end of the end in the first direction of the pipe close to the air inlet and a central portion in the first direction of the pipe. It is characterized in that it is arranged in
- the wind shield member is disposed to surround or sandwich the tube of the excimer lamp. That is, a separation area is formed between the tube of the excimer lamp and the wind shield member. For this reason, to-be-processed gas flows in towards the separation area
- the gas to be treated is assumed to be a gas to be deodorized and disinfected, and as a more detailed example, it is possible to use exhaust gases in automobiles and factories etc, and specific medicines such as experimental equipment and medical sites The atmosphere in the space with sex is mentioned. These gases contain oxygen and moisture.
- the ultraviolet light emitted from the excimer lamp has a higher energy as the wavelength is shorter, the short wavelength component is absorbed by oxygen. It is known that light with a wavelength of about 120 nm to 250 nm is absorbed by oxygen, and in particular, for light with a wavelength of 150 nm to 180 nm, as described later with reference to FIG. 5 or FIG. Absorption coefficient is high. For this reason, even if light of such a wavelength band is emitted from an excimer lamp to deodorize and sterilize the gas to be treated, it is absorbed by oxygen contained in the gas to be treated, so that the gas to be treated is sufficient. Can not reach the light.
- the wind shielding member by providing the wind shielding member, it is possible to intentionally cause the gas to be treated taken in from the air inlet to flow in the vicinity of the tube of the excimer lamp. Therefore, even when ultraviolet light in a short wavelength band is emitted from the excimer lamp as described above, it is possible to irradiate ultraviolet light to most of the gas to be treated taken in from the air inlet. Thereby, the decomposition performance of the offensive odor and harmful substance contained in the gas to be treated can be enhanced.
- the to-be-processed gas flows through the position between a wind-shield member and a pipe body, since a flowable area
- the ultraviolet light emitted from the excimer lamp preferably includes light in a wavelength band (hereinafter referred to as “first wavelength band ⁇ 1 ”) included in the range of 160 nm or more and less than 180 nm.
- Excitation light of the first wavelength band ⁇ 1 from the excimer lamp is irradiated to the gas to be treated which flows in the vicinity of the excimer lamp, and oxygen atom O ( 1 D) in an excited state showing high reactivity And hydroxy radicals (.OH) are generated.
- oxygen atom O 1 D
- ozone O 3
- the shape of the case is arbitrary as long as it has a hollow cylindrical shape.
- various shapes such as a cylindrical tube shape and a square tube shape can be adopted.
- the wind shield member is It has a first opening that is opened to cover the tube when viewed from the first direction, and a shield that is an area outside the first opening and that is not provided with an opening.
- the distance between the tube located inside the first opening and the inner edge of the shield on the first opening may be 1 mm or more and 10 mm or less.
- the wind shielding member has a shape in which an opening (first opening) is provided at the center of the shielding portion, and the tube body of the excimer lamp is disposed so as to penetrate the first opening.
- the to-be-treated gas that has collided with the shield flows along the first direction in the vicinity of the pipe through the first opening.
- the separation distance between the tube located inside the first opening and the inner edge on the first opening side of the shielding part is an extremely narrow distance of 1 mm or more and 10 mm or less. UV emitted from an excimer lamp, even when including the first wavelength band lambda 1 light can be sufficiently irradiated with such light to the gas to be treated.
- Two or more of the wind shielding members are disposed apart from each other in the first direction, At least a portion of the first opening of the first wind shielding member positioned closer to the air inlet of the two wind shielding members adjacent to the first direction, and the two wind shielding members Among the above, the shielding portion provided in the second air shielding member positioned closer to the exhaust port may overlap with each other when viewed from the first direction.
- the gas to be treated flows through the first opening. Since the gas to be treated flows in the vicinity of the tube of the excimer lamp, the gas to be treated is irradiated with ultraviolet light of a short wavelength (for example, the first wavelength band ⁇ 1 ) from the excimer lamp. Can be sufficiently irradiated. However, the length through which the gas to be treated flows in the first opening along the first direction depends on the length (hereinafter referred to as "thickness") in the first direction of the wind shield member.
- the time for which the gas to be treated is irradiated with the ultraviolet light having a short wavelength becomes short, so depending on the flow rate of the gas to be treated introduced into the housing It is also assumed that the offensive odor / hazardous substance will remain without decomposition.
- the tube of the excimer lamp is passed through the first opening of the second wind shield member Because it flows near the body, the decomposition performance of odor and harmful substances is further improved.
- the first opening has a rotationally asymmetric shape
- the inner edge of the shielding portion of the first air shielding member on the first opening side and the second edge of the shielding portion of the second air shielding member may overlap when viewed from the first direction.
- the first opening may have an oval shape, an oval shape, a rectangular shape, or the like.
- the major axis direction of the first air shielding member and the minor axis direction of the second air shielding member may be arranged in parallel.
- the wind shield member is A shielding portion not provided with an opening, which is disposed at two or more positions separated by sandwiching the tube body when viewed from the first direction; And a first opening which is a space area sandwiched by two or more of the shielding parts,
- the separation distance between the tube located in the first opening and the outer edge of the shield on the first opening may be 1 mm or more and 10 mm or less.
- the wind shielding member has shielding portions arranged at two or more positions, and the tube body of the excimer lamp is arranged in the space area (first opening portion) sandwiched by the shielding portions. ing. Also in such a configuration, the gas to be treated that has collided with the shield flows along the first direction in the vicinity of the pipe through the first opening.
- the ultraviolet light emitted from the excimer lamp is set by setting the separation distance between the tube located in the first opening and the outer edge of the shielding part on the first opening side to an extremely narrow distance of 1 mm or more and 10 mm or less. , even when including the first wavelength band lambda 1 light can be sufficiently irradiated with such light to the gas to be treated.
- the wind shielding member is disposed at two or more positions separated in the first direction, At least a portion of the first opening of the first wind shielding member positioned closer to the air inlet of the two wind shielding members adjacent to the first direction, and the two wind shielding members Among the above, the shielding portion provided in the second air shielding member positioned closer to the exhaust port may overlap with each other when viewed from the first direction.
- the treated gas flows temporarily in the first opening of the wind shielding member in the previous stage, and then the odor is temporarily reduced. Even if the harmful substance remains, the gas to be treated can flow again in the vicinity of the tube of the excimer lamp by flowing in the first opening of the wind shield member in the subsequent stage. This improves the decomposing ability of the offensive odor and harmful substances.
- the shielding portion provided in the wind shielding member may have a semicircular shape or a rectangular shape.
- the wind shield member is Two or more are disposed apart from each other in the first direction, A first opening opened to cover the tube when viewed from the first direction; A shield part which is an area outside the first opening and in which no opening is provided; And a second opening in which a plurality of openings are provided in a dispersed manner in a region of the shielding portion,
- the second opening provided in the air shielding member disposed at a position closest to the air inlet is the shielding member provided in at least one of the air shielding members in the first direction; It does not matter as what is arrange
- the gas to be treated can be temporarily retained temporarily at a position away from the excimer lamp.
- the wavelength of the ultraviolet light emitted from the excimer lamp depends on the type of discharge gas filled in the tube.
- the ultraviolet light emitted from the excimer lamp has a component in the range of 160 nm to less than 180 nm (first wavelength band ⁇ 1 ) and a range of 180 nm to less than 200 nm And the components of the “second wavelength band ⁇ 2 ”).
- a half or more of the second openings are at least one of the first directions. It is preferable that at least a portion of the shielding portion provided on the shielding member is disposed so as to at least partially overlap, and all the second openings are at least one of the shielding members in the first direction. More preferably, at least a portion of the shielding portion provided on the member is disposed so as to overlap.
- the second opening portion provided in the wind shielding member disposed at a position closest to the air intake port is the shielding portion provided in at least one of the wind shielding members in the first direction.
- 50% or more of the areas are arranged so as to overlap, more preferably 90% or more of the areas are arranged so as to overlap, and even more preferably 100% of the areas are arranged so as to overlap preferable.
- Each of the second openings provided in all the wind shielding members is at least partially overlapped with the shielding portion provided in at least one of the wind shielding members in the first direction. It does not matter if it is disposed. Also in this case, in the first direction, each of the second openings and the shielding portion provided in at least one of the wind shielding members are arranged such that the area of 50% or more overlaps with each other. It is more preferable that 90% or more of the areas be arranged so as to overlap, and even more preferably 100% of the areas be arranged so as to overlap.
- the effect of reducing the velocity of the processing gas flowing from the intake port to the exhaust port is enhanced at a position away from the excimer lamp, so that more O ( 1 D) and. It is possible to generate
- the excimer lamp may have an elongated shape whose longitudinal direction is the first direction, and may be disposed so as to penetrate the first openings provided in a plurality of the wind shielding members.
- a plurality of excimer lamps, which have an elongated shape whose longitudinal direction is the first direction, are arranged substantially in parallel, spaced apart in a direction different from the first direction. It does not matter if it is done.
- the wind shielding member has a surface intersecting the first direction,
- the plurality of second openings may be arranged concentrically on the surface of the wind shield member. In this case, the relative positional relationship between the second openings provided in the plurality of wind shielding members can be adjusted by simply rotating the wind shielding member.
- the excimer lamp may be disposed in a mode in which the longitudinal direction intersects the first direction (the direction parallel to the flow direction of the gas to be treated). That is, the gas processing apparatus An elongated shape in which a direction intersecting with the first direction is a longitudinal direction is illustrated, and the excimer lamp includes a plurality of the excimer lamps disposed apart from each other in the first direction, Among the plurality of excimer lamps, at least two of the excimer lamps have a shape in which portions in the longitudinal direction extend in a direction parallel to the longitudinal direction provided on different wind shielding members. It can be arranged to be located in the opening.
- the formation position of the first opening may be shifted with respect to the direction parallel to the longitudinal direction of at least two of the wind shielding members. Also with this configuration, it is possible to enhance the function of temporarily retaining the gas to be treated at a position away from the excimer lamp.
- the excimer lamp may be disposed so that a part thereof protrudes from the wind shielding member in the first direction.
- a gap of 1 mm or more and 10 mm or less may be provided between the excimer lamp located in the first opening and the shielding portion located outside the first opening. According to this configuration, of the light emitted from the excimer lamp, the light representing the component of the first wavelength band ⁇ 1 is irradiated to the processing gas flowing at a sufficient flow rate, and O ( 1 D) and Can generate OH.
- the gas processing apparatus comprises a plurality of the excimer lamps,
- the air shielding member may be disposed so as to surround the pipe provided in each of the plurality of excimer lamps or to sandwich the pipe.
- the contact probability between a substance having high reactivity (for example, O ( 1 D) or .OH) and the offensive odor or harmful substance contained in the gas to be treated as compared with the conventional apparatus Therefore, the decomposition performance can be improved even for an odor component that is difficult to be decomposed only by ozone (O 3 ).
- a substance having high reactivity for example, O ( 1 D) or .OH
- FIG. 1 It is a typical sectional view when the gas processing device of a first embodiment is cut by XY plane. It is the typical perspective view to which area
- region A2 part of FIG. 8 It is the typical perspective view to which area
- FIG. 1 It is a schematic plan view when one wind shielding member with which the gas processing apparatus of 3rd embodiment is provided is seen from a X direction. It is a schematic plan view when another one wind shield member with which the gas processing apparatus of 3rd embodiment is provided is seen from a X direction. It is a schematic diagram for demonstrating the position of the 2nd opening part provided in the wind shielding member with which the gas processing apparatus of 3rd embodiment is provided. And the emission spectrum of the excimer lamp the discharge gas containing Xe is filled, a graph displayed overlapping the absorption spectrum of the oxygen (O 2) and ozone (O 3). It is sectional drawing which shows typically another structure of the gas processing apparatus of 3rd embodiment.
- FIG. 15 It is sectional drawing which shows typically another structure of the gas processing apparatus of 3rd embodiment. It is a schematic plan view when the one wind shielding member with which the gas processing apparatus shown in FIG. 15 is equipped is seen from a X direction. It is a schematic plan view when another one wind shield member with which the gas processing apparatus shown in FIG. 15 is equipped is seen from a X direction. It is a schematic plan view when one wind shielding member with which the gas processing apparatus of 3rd embodiment is provided is seen from a X direction. It is a schematic plan view when another one wind shield member with which the gas processing apparatus of 3rd embodiment is provided is seen from a X direction.
- FIG. 7 is a graph comparing the decomposition modes of formaldehyde (HCHO) in Examples 2-1 to 2-2, Comparative Examples 2-1 to 2-3, and Reference Example.
- FIG. 1 is a cross-sectional view schematically showing the structure of the gas processing apparatus of the present embodiment.
- FIG. 2 is a schematic perspective view enlarging a portion A1 in FIG.
- the gas processing apparatus 1 of the present embodiment includes a housing 3, an intake port 5, an exhaust port 7, an excimer lamp 10, and a wind shield member 20.
- the direction from the intake port 5 toward the exhaust port 7 is taken as the X direction, and a plane orthogonal to the X direction is defined as the YZ plane.
- Three directions of X, Y and Z are shown in FIG.
- three directions of X, Y, and Z are shown as being a right-handed coordinate system.
- FIG. 1 respond
- the flow of gas is schematically shown by a dashed double-dotted line with an arrow
- the flow of light is schematically shown by a dashed line with an arrow.
- the flow channel direction corresponds to the + X direction.
- the “first direction” corresponds to the + X direction and the ⁇ X direction. In the following, when it is not necessary to distinguish between positive and negative directions, positive and negative notation is not performed.
- the housing 3 has a hollow cylindrical shape, and the excimer lamp 10 is accommodated inside thereof.
- the intake port 5 is an opening for introducing the gas to be processed G ⁇ b> 1 from the outside of the gas processing apparatus 1 to the inside (inside) of the hollow casing 3.
- the to-be-treated gas G1 is a gas containing oxygen and moisture, and is, for example, air or an exhaust gas.
- the size of the opening in the area where the excimer lamp 10 is accommodated is smaller than the size of the opening in the area where the intake port 5 and the exhaust port 7 are located.
- this shape is merely an example. That is, regarding the shape of the housing 3 provided in the gas processing apparatus 1 of the present invention, the size of the opening in the area where the intake port 5 is located, the size of the opening in the area where the excimer lamp 10 is accommodated, and the exhaust port
- the magnitude relation between the sizes of the openings in the region where 7 is located is arbitrary.
- the sizes of these three openings may be substantially the same.
- the housing 3 can adopt various shapes such as a cylindrical tube shape and a square tube shape. The same applies to the second and subsequent embodiments.
- the gas processing apparatus 1 of this embodiment is provided with two sheets of wind shielding members 20 (20a, 20b) spaced apart and arranged in the X direction.
- the wind shielding members (20a, 20b) are collectively referred to as “wind shielding member 20”.
- the wind shield member 20 a corresponds to the “first wind shield member”
- the wind shield member 20 b corresponds to the “second wind shield member”.
- the wind shield member 20 is fixed to the housing 3 by a method such as screwing, for example.
- the wind shield member 20 is fixed so as not to form a gap substantially between itself and the housing 3.
- the wind shielding member 20 is disposed so as to surround the excimer lamp 10 when viewed from the X direction. More specifically, the wind shield member 20 is disposed so as to surround the tube 14 (the light emitting tube 13) (see FIG. 3) of the excimer lamp 10. The positional relationship between the wind shield member 20 and the excimer lamp 10 will be further described later with reference to FIGS. 4A to 4C.
- FIG. 3 is a cross-sectional view schematically showing an example of the structure of the excimer lamp 10.
- the excimer lamp 10 includes a power supply (not shown) for applying a voltage (for example, high voltage of alternating current) between the first electrode (external electrode) 11 and the second electrode (internal electrode) 12.
- a voltage for example, high voltage of alternating current
- the light emitting tube 13 is provided at both ends with a first sealing portion 15 and a second sealing portion 16 which make the inside of the tubular body 14 airtight.
- the tube body 14 is made of a dielectric such as synthetic quartz glass, and a discharge gas for forming excimer molecules by a discharge is sealed inside.
- the discharge gas contains xenon (Xe).
- Xe xenon
- the discharge gas it is composed of a gas in which xenon (Xe) and neon (Ne) are mixed at a predetermined ratio (for example, 3: 7).
- the discharge gas contained in the tubular body 14 may contain a small amount of oxygen or hydrogen.
- the first sealing portion 15 and the second sealing portion 16 are respectively fixed by the base portions 35 (35a, 35b) (see FIG. 1).
- the base portion 35 is made of a ceramic material (inorganic material) such as steatite, forsterite, sialon, or alumina, and has a function of fixing the end of the tubular body 14.
- the light emitting tube 13 includes a metal foil 17 embedded in the first sealing portion 15 and an external lead 18 partially embedded in the first sealing portion 15.
- the metal foil 17 is connected to the internal electrode 12 and the external lead 18. Thereby, the internal electrode 12, the metal foil 17 and the external lead 18 are electrically connected to each other.
- the external electrode 11 is formed in a tubular shape, and the tubular body 14 is inserted into the external electrode 11.
- the external electrode 11 includes an optical path portion 19 which transmits or transmits light (ultraviolet light) L1 emitted from the inside of the tubular body 14.
- the optical path part 19 is comprised by the through-hole.
- the external electrode 11 may be formed to have a plurality of through holes in a plate-like member, or may be formed by arranging a plurality of rod-like members in a lattice shape or a mesh shape, and a rod-like member May be arranged in a spiral.
- the optical path part 19 may be comprised by the member which has translucency.
- the internal electrode 12 is formed in a rod shape, and is disposed inside the tubular body 14. Since the end portions of the internal electrode 12 are embedded in the sealing portions (15, 16) of the light emitting tube 13 respectively, the internal electrode 12 is fixed to the light emitting tube 13.
- the emitted gas (ultraviolet light) L1 from the excimer lamp 10 is irradiated to the process gas G1 flowing through the outside of the excimer lamp 10 in the housing 3, so that the process gas G1 is decomposed and the gas after the process is processed.
- G2 is discharged from the exhaust port 7.
- FIGS. 4A and 4B are diagrams for explaining the shape of the wind shield member 20.
- FIG. 4A is a schematic plan view of the air shielding member 20a positioned on the side closer to the air intake port 5 as viewed from the X direction.
- FIG. 4B is a schematic plan view of the wind shield member 20b located on the rear side (the exhaust port 7 side) of the wind shield member 20a as viewed from the X direction.
- the excimer lamp 10 is also shown in figure by FIG. 4A and 4B on account of description.
- the wind shield member 20 is viewed from the X direction, from the first opening 21 opened to cover the excimer lamp 10 (tube 14) and the first opening 21. Also in the outer area, there is a shielding part 23 provided with no opening.
- the inner diameter of the first opening 21 is larger than the outer diameter of the excimer lamp 10. That is, an opening area (first opening 21) is still formed between the excimer lamp 10 and the shielding part 23.
- the shielding part 23 is made of, for example, stainless steel or titanium which is not easily deteriorated by ozone (O 3 ) or ultraviolet light. That is, the wind shielding member 20 is configured to include the shielding portion 23 in which the first opening 21 is opened in the vicinity of the center.
- FIG. 4C is a drawing for explaining the positional relationship between the wind shielding member 20a and the wind shielding member 20b included in the gas processing apparatus 1 of the present embodiment. More specifically, FIG. 4C is a drawing in which the wind shielding member 20b is superimposed on the drawing when the wind shielding member 20a is viewed from the intake port 5 side.
- a part of the to-be-treated gas G1 that has passed through the first opening 21 of the wind shielding member 20a and traveled in the X direction as it is is the shielding portion of the wind shielding member 20b disposed downstream of the wind shielding member 20a. It collides with 23. Then, the gas G1 to be treated changes the direction of the air flow in the direction of the first opening 21 of the wind shield member 20b, and then flows through the inside of the first opening 21 toward the exhaust port 7 side.
- the distance between the outer edge of the first opening 21 of the wind shield member 20 (that is, the inner edge of the shielding portion 23 on the first opening 21 side) and the tube 14 of the excimer lamp 10 disposed inside thereof is preferably Is 1 mm or more and 10 mm or less.
- the separation distance changes according to the place.
- the maximum value of the separation distance is 5 mm
- the minimum value of the separation distance is 3 mm.
- the wind shield member 20 when the shape of the first opening 21 of the wind shield member 20 is an elliptical shape, the wind shield member 20 has a rotationally asymmetric shape.
- the wind shielding member 20b may be disposed in a state of being rotated by a predetermined angle (for example, 90 °) with the X direction as an axis with respect to the wind shielding member 20a.
- the shape of the wind shield member 20b shown in FIG. 4B corresponds to the shape obtained by rotating the wind shield member 20a shown in FIG. 4A by 90 °.
- the thickness of the wind shield member 20, that is, the length in the X direction, is arbitrary, and is, for example, 2 mm. Further, the shape of the housing 3 is also arbitrary. As an example, the cross section in the XY direction can be made rectangular, and the cross section in the YZ direction can be made rectangular or circular. An example of the length of the housing 3 in the X direction is 150 mm, and an example of the cross-sectional area in the YZ direction is 3600 mm 2 .
- FIG. 5 is a graph showing the emission spectrum of an excimer lamp filled with a discharge gas containing Xe and the absorption spectra of oxygen (O 2 ) and ozone (O 3 ) in an overlapping manner.
- the horizontal axis indicates the wavelength
- the left vertical axis indicates the relative light intensity of the excimer lamp
- the right vertical axis indicates the absorption coefficients of oxygen (O 2 ) and ozone (O 3 ).
- the emitted light L1 of the excimer lamp 10 is in a range of 160 nm to less than 180 nm (hereinafter referred to as “first wavelength band ⁇ 1 ) component).
- first wavelength band ⁇ 1 the light of the first wavelength band lambda 1
- the absorption amount of oxygen (O 2) is large.
- the emitted light L1 may be suitably described with "the ultraviolet-ray L1.”
- UV L1 from an excimer lamp 10 is illuminated, when absorbed into oxygen (O 2), the following (1 ) The reaction of the formula proceeds.
- O ( 1 D) is an excited O atom and exhibits high reactivity.
- O ( 3 P) is a ground state O atom.
- h ⁇ ( ⁇ 1 ) indicates that light in the first wavelength band ⁇ 1 is absorbed.
- the O ( 3 P) generated by the equation (1) reacts with oxygen (O 2 ) contained in the gas to be treated G 1 to generate ozone (O 3 ) according to the equation (2).
- O ( 1 D) a part of O ( 1 D) exhibiting high reactivity reacts with water (H 2 O) contained in the gas to be treated G 1 to generate a hydroxy radical ( ⁇ OH) according to the equation (3).
- H 2 O water
- ⁇ OH hydroxy radical
- the light of the first wavelength band lambda 1 the absorption amount of oxygen (O 2) is large. Therefore, temporarily, even if the gas to be treated G1 is introduced from the inlet 5, if the air shielding member 20 is not provided inside the housing 3, the gas to be treated G1 flowing in the vicinity of the excimer lamp 10 is The ultraviolet light L1 is absorbed by the oxygen contained. As a result, the ultraviolet light L1 can not be irradiated to the processing gas G1 flowing through the position away from the excimer lamp 10 while maintaining a high light quantity.
- the excimer lamp 10 is disposed in the housing 3 in which the wind shield member 20 is not provided, and the gas to be treated G1 flows while the excimer lamp 10 emits light.
- the relationship between the distance and the relative illuminance of the ultraviolet light L1 emitted from the excimer lamp 10 is graphed. More specifically, FIG. 6 shows the spectrum data of the excimer lamp 10 shown in FIG. 5 and the absorption coefficient of oxygen (O2) shown in FIG. Correspond to the result calculated by simulation based on the distance
- the relative illuminance at each position is graphed, where the transmitting distance is 0, that is, the illuminance of the ultraviolet light L1 on the surface of the excimer lamp 10 is 100%.
- the amount of hydroxyl radicals ( ⁇ OH) is proportional to the amount of O (1 D), and the amount of O (1 D), the amount of light irradiated It is understood that it is proportional to. That is, FIG. 6 shows the relationship between the distance from the surface of the excimer lamp 10 and the generation amount of the hydroxy radical (.OH). That is, according to FIG. 6, it is confirmed that the concentration of the hydroxy radical (.OH) decreases as the distance from the surface of the excimer lamp 10 increases. And when it leaves
- the wind shielding member 20 since the wind shielding member 20 is provided inside the housing 3, the flow shielding region of the process gas G1 is limited by the wind shielding member 20. Ru. More specifically, as shown in FIGS. 4A and 4B, the wind shield member 20 has a first opening 21 provided so as to surround the periphery of the excimer lamp 10, and a shield 23 provided outside the first opening 21. And. That is, when the processing gas G1 flowing in the X direction collides with the shielding portion 23, the flowing direction is changed to the side of the first opening 21 provided in the vicinity of the excimer lamp 10. Thereby, the to-be-processed gas G1 introduce
- the distance between the outer edge of the first opening 21 of the wind shield member 20 (that is, the inner edge of the shielding portion 23 on the first opening 21 side) and the tube 14 of the excimer lamp 10 disposed therein is By setting the diameter to 10 mm or less, the gas to be treated G1 is positioned in the vicinity of the excimer lamp 10 before and after flowing in the first opening 21. As a result, the ultraviolet light L1 of the excimer lamp 10 is irradiated at a high rate with respect to the gas to be processed G1 located in such a region, so that the generation probability of O ( 1 D) or .OH showing high reactivity is enhanced.
- the separation distance between the inner edge of the shielding part 23 on the first opening 21 side and the tube body 14 of the excimer lamp 10 disposed on the inner side is too small, the processed part flows through the separation part The flow velocity of the gas G1 becomes extremely fast. As a result, the offensive odor / toxic substance contained in the gas to be treated G1 may be exhausted from the exhaust port 7 before being decomposed by O ( 1 D) or ⁇ OH. From this point of view, the separation distance is preferably 1 mm or more.
- the separation distance is 1 mm or more and 10 mm or less
- the time before and after flowing through the inside of the first opening 21 of the wind shielding member 20 depending on the thickness (length in the X direction) of the wind shielding member 20 It is assumed that the odor and harmful substances contained in the gas to be treated G1 remain without being decomposed by O ( 1 D) or. That is, in the air flow generated by the to-be-treated gas G1, it is assumed that a region where the offensive odor / toxic substance is decomposed and a region where they remain without being decomposed are mixed.
- the flowable region of the to-be-treated gas G1 is expanded.
- the gas to be treated G1 is likely to generate turbulent flow due to the pressure difference. Due to this turbulent flow, the air flow in which the offensive odor or harmful substance contained in the gas to be treated G1 is completely decomposed, and the air flow in which part of the offensive odor or harmful substance remained without being decomposed is mixed. After being generated, it flows toward the exhaust port 7 side.
- the gas to be treated G1 containing an offensive odor and harmful substance can easily flow in the vicinity of the excimer lamp 10. Therefore, the ultraviolet light L1 emitted from the excimer lamp 10 is applied to the gas to be treated G1 also at a position after the wind shield member 20 (20a) to further decompose the offensive odor and harmful substance. be able to.
- the gas to be treated G 1 can be introduced in the vicinity of the excimer lamp 10.
- the ultraviolet light L1 emitted from the excimer lamp 10 is irradiated to the to-be-treated gas G1 to generate O ( 1 D) and .OH, and the odorous and harmful substances contained in the to-be-treated gas G1 are further decomposed. can do.
- the number of the wind shielding members 20 is not limited to two, and may be one or three or more.
- the number of the wind shielding members 20 can be appropriately adjusted in accordance with the length of the excimer lamp 10 in the X direction.
- the air shielding member 20 (here, the air shielding member 20a) disposed at a position closest to the air inlet 5 is an end (base 35a) on the air inlet 5 side of the excimer lamp 10 (tube body 14); It is preferable to arrange
- the ultraviolet ray L1 emitted from the excimer lamp 10 can be irradiated. The same applies to the second and subsequent embodiments.
- the gas processing apparatus 1 may include a plurality of excimer lamps 10 (see FIGS. 7A and 7B).
- FIG. 7A is a perspective view schematically showing only the vicinity of the wind shield member 20a when the gas processing apparatus 1 includes the two excimer lamps 10.
- FIG. 7B is a perspective view schematically showing only the vicinity of the wind shield member 20a when the gas processing apparatus 1 includes four excimer lamps 10.
- the wind shielding member 20a has the first openings 21 in the number corresponding to the number of the excimer lamps 10, and the excimer lamps 10 are disposed so as to penetrate the first openings 21. I do not mind.
- the flow rate of the processing gas G1 flowing in the vicinity of the excimer lamps 10 can be increased. it can. Thereby, the processing ability of the offensive odor and harmful substances contained in the gas to be treated G1 can be further enhanced.
- each of the wind shielding members 20 may be provided with the first opening 21 corresponding to the number of the excimer lamps 10.
- Second Embodiment A second embodiment of the gas treatment apparatus of the present invention will be described focusing on differences from the first embodiment.
- FIG. 8 is a cross-sectional view schematically showing the structure of the gas processing apparatus of the present embodiment.
- FIG. 9 is a schematic perspective view enlarging a portion A2 in FIG.
- the direction from the intake port 5 toward the exhaust port 7 is the X direction
- the plane orthogonal to the X direction is the YZ plane.
- the gas processing apparatus 1 includes the housing 3, the intake port 5, the exhaust port 7, the excimer lamp 10, and the wind shielding member 20 as in the gas processing apparatus 1 according to the first embodiment. .
- the structure of the wind shield member 20 is different from that of the first embodiment.
- the gas processing apparatus 1 of this embodiment is provided with the wind shielding member 20 (20a, 20b, 20c, 20d) arrange
- the wind shielding members (20a, 20b, 20c, 20d) are collectively referred to as “wind shielding member 20”.
- FIG. 10A and 10B are drawings for explaining the shape of the wind shield member 20.
- FIG. 10A is a schematic plan view of the air shielding member 20a positioned on the side close to the air intake port 5 as viewed from the X direction.
- FIG. 10B is a schematic plan view of the wind shielding member 20b located on the rear side (the exhaust port 7 side) of the wind shielding member 20a when viewed from the X direction.
- the excimer lamp 10 is also shown in figure by FIG. 10A and 10B on account of description.
- the wind shielding member 20c shows the same shape as FIG. 10A
- the wind shielding member 20d shows the same shape as FIG. 10B.
- the shielding member 20 is a shielding part disposed at two positions separated by the excimer lamp 10 (tube body 14) when viewed from the X direction. And a first opening 21 which is a space area sandwiched between the two shielding portions 23.
- the two shielding portions 23 are disposed substantially separately in the Y direction, and the first opening 21 is formed therebetween.
- the two shielding portions 23 are disposed substantially separately in the Z direction, and the first opening 21 is formed between them. .
- the shielding part 23 is exhibiting semicircle shape.
- the shape of the shielding part 23 is arbitrary, and various shapes, such as a crescent shape, a rectangular shape, and a triangle shape, may be employ
- FIG. 10C is a drawing for explaining the positional relationship between the wind shielding member 20a and the wind shielding member 20b included in the gas processing apparatus 1 of the present embodiment. More specifically, FIG. 10C is a drawing in which the wind shielding member 20b is superimposed on the drawing when the wind shielding member 20a is viewed from the intake port 5 side.
- a partial area 21a of the first opening 21 of the wind shielding member 20a which is indicated by hatching rising to the right, overlaps the shielding portion 23 of the wind shielding member 20b in the X direction.
- a part of the to-be-treated gas G1 that has passed through the first opening 21 of the wind shielding member 20a and traveled in the X direction as it is is the shielding portion of the wind shielding member 20b disposed in the rear stage of It collides with 23. Then, the gas G1 to be treated changes the direction of the air flow in the direction of the first opening 21 of the wind shield member 20b, and then flows through the inside of the first opening 21 toward the exhaust port 7 side.
- the to-be-treated gas G1 is positioned in the vicinity of the excimer lamp 10 before and after flowing through the inside of the first opening 21, the ultraviolet light L1 of the excimer lamp 10 is irradiated at a high ratio.
- the generation probability of reactive O ( 1 D) or .OH can be increased.
- the to-be-processed gas G1 passes through the inside of the first opening 21 of the wind shield member 20 (20a), the flowable region of the to-be-treated gas G1 spreads.
- the to-be-treated gas G1 is likely to generate turbulent flow due to the pressure difference.
- the air flow in which the offensive odor / toxic substance contained in the gas to be treated G1 is completely decomposed, and the air flow in which part of the offensive odor / toxic substance remained without being decomposed are mixed. It flows toward the mouth 7 side.
- the treated gas G1 containing an offensive odor / hazardous substance can easily flow in the vicinity of the excimer lamp 10 even at a position after the wind shield member 20 (20a). By being irradiated with the ultraviolet light L1 emitted from the excimer lamp 10, the offensive odor and harmful substance can be further decomposed.
- the gas processing apparatus 1 was demonstrated as what is provided with the wind shielding member 20 arrange
- the number of positions (X coordinates) in the X direction where the wind shield members 20 are arranged is not limited to four.
- the wind shielding member 20 may be disposed at one specific point of the X coordinate, or the wind shielding member 20 may be disposed at two or more places separated from each other.
- FIG. 10A and FIG. 10B when viewed from the X direction, the respective wind shielding members 20 are disposed at two positions separated by the excimer lamp 10 (tube 14). It has been described that the shield 23 is provided. However, the number of shielding portions 23 included in each of the wind shielding members 20 is not limited to two, and may be three or more. Further, the direction in which the shielding portions 23 are separated is not limited to the Y direction or the Z direction, and is arbitrary as long as the shielding portions 23 are disposed with the excimer lamp 10 interposed therebetween.
- FIG. 11 is a cross-sectional view schematically showing the structure of the gas processing apparatus of the present embodiment.
- the gas processing apparatus 1 includes a housing 3, an intake port 5, an excimer lamp 10, an exhaust port 7, and a plurality of wind shielding members 20 (20a, 20b, 20c, 20d, 20e).
- the direction from the intake port 5 toward the exhaust port 7 is taken as the X direction, and a plane orthogonal to the X direction is defined as the YZ plane.
- three directions of X, Y and Z are illustrated together with the gas processing apparatus 1.
- three directions of X, Y and Z are shown as being a right-handed coordinate system.
- FIG. 11 respond
- the flow of gas is schematically shown by a two-dot chain line, and the flow of light is schematically shown by a broken line.
- the flow channel direction corresponds to the + X direction.
- the “first direction” corresponds to the + X direction and the ⁇ X direction. In the following, when it is not necessary to distinguish between positive and negative directions, positive and negative notation is not performed.
- the shape of the housing 3 is illustrated in FIG. 11 so as to be different from the shape of the housing 3 illustrated in FIGS. 1 and 8. However, also in the present embodiment, the housing 3 having the shape illustrated in FIGS. 1 and 8 may be employed. Conversely, in the first embodiment and the second embodiment, the casing 3 having the shape illustrated in FIG. 11 may be adopted.
- the intake port 5 is an opening for introducing the gas to be processed G ⁇ b> 1 into the inside of the housing 3 from the outside of the gas processing apparatus 1.
- the to-be-treated gas G1 is a gas containing oxygen and moisture, and is, for example, air or an exhaust gas.
- the air intake port 5 is provided with a fan 6 as a blowing mechanism.
- the blower mechanism may be configured by an apparatus different from the fan 6 or may be disposed on the exhaust port 7 side, and is disposed on a flow path between the intake port 5 and the exhaust port 7. I don't care.
- the air blowing mechanism (fan 6) is not provided in an environment where a sufficient flow rate of the processing gas G1 can be introduced toward the inside of the housing 3 from the outside of the gas processing apparatus 1 through the intake port 5, the air blowing mechanism (fan 6) is not provided. It does not matter.
- a blower mechanism (fan 6) may be provided on the intake port 5 side or the exhaust port 7 side.
- the gas processing apparatus 1 includes a plurality of wind shielding members 20 which are disposed apart from each other in the X direction.
- the gas processing apparatus 1 is provided with five sheets of wind shield members (20a, 20b, 20c, 20d, 20e).
- the wind shielding members (20a, 20b, 20c, 20d, 20e) are generically referred to as "wind shielding member 20".
- FIG. 12A and 12B are schematic plan views when the wind shield member 20 is viewed from the X direction.
- FIG. 12A corresponds to a schematic plan view of the wind shield members (20a, 20c, 20e)
- FIG. 12B corresponds to a schematic plan view of the wind shield members (20b, 20d).
- 12A and 12B also show a part of the housing 3.
- the wind shield member 20 includes a first opening 21, a second opening 22, and a shield 23.
- the shielding part 23 is made of, for example, stainless steel or titanium which is not easily deteriorated by ozone (O 3 ) or ultraviolet light. That is, the wind shielding member 20 is configured to include the shielding portion 23 in which the first opening 21 is opened in the vicinity of the center.
- a plurality of second openings 22 are dispersedly provided on the shielding portion 23 at positions outside the first openings 21.
- the second openings 22 are concentrically dispersed at equal intervals.
- the first opening 21 and the second opening 22 are opened so as to penetrate the wind shielding member 20 in the depth direction of the wind shielding member 20 (the X direction in FIGS. 12A and 12B).
- the wind shield member 20 is fixed to the housing 3 by a method such as screwing, for example.
- the wind shield member 20 is fixed so as not to form a gap substantially between itself and the housing 3.
- the excimer lamp 10 has an elongated shape whose longitudinal direction is the X direction.
- the excimer lamp 10 is disposed to penetrate the first opening 21 in the X direction.
- the excimer lamp 10 is disposed so as to penetrate the first openings 21 of the plurality of wind shielding members 20 disposed apart in the X direction.
- the inner diameter of the first opening 21 is larger than the outer diameter of the excimer lamp 10. That is, an opening area (first opening 21) is still formed between the excimer lamp 10 and the shielding part 23.
- the formation position of is different.
- the surface of the wind shield member 20 here refers to a YZ plane, as shown to FIG. 12A and 12B.
- the second opening 22 provided in the wind shielding member (20a, 20c, 20e) is provided in the wind shielding member (20b, 20d) It is disposed at a position closer to the excimer lamp 10 than the second opening 22. That is, the separation distance d1 between the second opening 22 provided in the wind shielding member (20a, 20c, 20e) and the first opening 21 is the second distance provided in the wind shielding member (20b, 20d) The separation distance d2 between the opening 22 and the first opening 21 is shorter.
- each of the first openings 21 provided in the plurality of wind shielding members 20 overlaps, while the second opening provided in the plurality of wind shielding members 20
- the part 22 is formed in the position which the one part shifted.
- the second opening 22 provided in the wind shielding member 20a disposed at the position closest to the air inlet 5 is a shielding part provided in the adjacent wind shielding member 20b in the X direction. It overlaps with 23.
- the second opening 22 provided in the wind shielding member 20 b overlaps the shielding portion 23 provided in the adjacent wind shielding member 20 c in the X direction.
- FIG. 12C is a schematic view for explaining the position of the second opening 22 provided in each air shielding member 20.
- the second opening 22 disposed at a position (distance d1) close to the first opening 21 is provided in the wind shielding member (20a, 20c, 20e), and from the first opening 21
- positioned in the distant position (distance d2) is provided in a wind shielding member (20b, 20d).
- the to-be-processed gas G1 introduce
- FIG. When the to-be-treated gas G1 reaches the position of the wind shield member 20a disposed at the position closest to the intake port 5, the treated gas G1 collides with the shielding portion 23 via the first opening 21 and the second opening 22. Flow in the direction of the exhaust port 7.
- each of the first openings 21 provided in the plurality of wind shielding members 20 overlaps in the X direction. For this reason, the gas to be treated G1 that has passed through the wind shielding member 20a through the first opening 21 travels in the vicinity of the excimer lamp 10 along the X direction, which is the longitudinal direction of the 20b, 20c, 20d, 20e) are led to the exhaust port 7 through the first opening 21.
- the to-be-processed gas G1 which passes the wind shielding member 20a through the 2nd opening part 22, and advances to a X direction collides with the shielding part 23 of the adjacent wind shielding member 20b.
- Most of the to-be-processed gas G1 which collided with the shielding part 23 of the wind shielding member 20b is changed into the side in which the 2nd opening part 22 of the wind shielding member 20b is formed.
- the advancing direction is changed into the 2nd opening part 22 side in part.
- the gas to be treated G1 temporarily stays in the region sandwiched between the wind shielding member 20a and the wind shielding member 20b.
- the length (emission length) according to the X direction (longitudinal direction) of the excimer lamp 10 is 80 mm, and the length (diameter) according to the outer diameter on the YZ plane is 16 mm.
- the distance between the outer edge portion of the excimer lamp 10 and the wind shielding member 20 is preferably 1 mm or more and 20 mm or less, more preferably 1 mm or more and 15 mm or less, and still more preferably 1 mm or more and 10 mm or less .
- the area of one of the second openings 22 provided in the wind shield member 20 is preferably 3 mm 2 or more, and more preferably 13 mm 2 or more. If the area of one of the second openings 22 is too small, it will be difficult for the gas (G1, G2) to flow sufficiently.
- the relationship between the cross-sectional area (S1) of the distance between the outer edge of the excimer lamp 10 and the wind shield member 20 and the total area ( ⁇ S2) of the second opening preferably satisfies S12S2, and S1 ⁇ 2 ⁇ ⁇ S2 It is more preferable that Further, the thickness of the wind shield member 20, that is, the length in the X direction is arbitrary, and is, for example, 2 mm.
- the shape of the housing 3 is arbitrary.
- the cross section in the XY direction can be made rectangular, and the cross section in the YZ direction can be made rectangular or circular.
- An example of the length of the housing 3 in the X direction is 150 mm, and an example of the cross-sectional area in the YZ direction is 3600 mm 2 .
- FIG. 13 is a graph showing the emission spectrum of an excimer lamp filled with a discharge gas containing Xe and the absorption spectra of oxygen (O 2 ) and ozone (O 3 ) in an overlapping manner.
- the horizontal axis indicates the wavelength
- the left vertical axis indicates the relative light intensity of the excimer lamp
- the right vertical axis indicates the absorption coefficients of oxygen (O 2 ) and ozone (O 3 ).
- the emitted light of the excimer lamp 10 includes a component in a range of 160 nm or more and less than 180 nm (hereinafter, referred to as “first wavelength band ⁇ 1 ”).
- first wavelength band ⁇ 1 the light of the first wavelength band lambda 1, the absorption amount of oxygen (O 2) is large. Therefore, most of the first wavelength band lambda 1 of the light is absorbed by the gas to be treated G1 flowing through the vicinity of the excimer lamp 10 through the first opening 21.
- highly reactive O ( 1 D) and hydroxy radical ( ⁇ OH) are generated by the equations (1) to (3) described above in the first embodiment. I will post it again just in case.
- the emitted light of the excimer lamp 10 is not only a component of the first wavelength band ⁇ 1 but also within a range of 180 nm to less than 200 nm (hereinafter referred to as “second wavelength band ⁇ 2 ” Also includes the components of The second wavelength band lambda 2 of light, although than the first wavelength band lambda 1 of the light intensity decreases, with respect to the intensity (peak value) corresponding to the main peak wavelength of 5% to 50% of the intensity There is a wavelength range that indicates When converted by the integral intensity, light of the second wavelength band lambda 2, to the first wavelength band lambda 1 light, and has a strength of at least 10% to 30%.
- Light of a second wavelength band lambda 2 is different from the first wavelength band lambda 1 light, oxygen (O 2) significantly lower uptake by (right vertical axis in FIG. 13 is denoted by a logarithmic scale.) . That is, at least a portion of the second wavelength band lambda 2 of the light emitted from the excimer lamp 10 is transmitted through the gas to be treated G1 flowing through the inside of the first opening 21, the spaced-apart regions from an excimer lamp 10 Progress against.
- the plurality of wind shielding members 20 are provided separately in the X direction, and the second wind shielding member 20 provided in the adjacent wind shielding members 20 Because the arrangement position of the opening 22 on the YZ plane is shifted, the to-be-treated gas G1 temporarily stagnates in the region sandwiched between the adjacent wind shielding members 20.
- the stagnant gas to be treated G1 contains gas in which the reactions shown in the above equations (1) to (3) have been executed, and therefore ozone (O 3 ) is included.
- O 3 h ⁇ ( ⁇ 2 ) ⁇ O 2 + O ( 1 D) .... (4)
- O ( 1 D) having high reactivity is generated in the vicinity of the excimer lamp 10 according to the above equation (1), and also at a position away from the excimer lamp 10 Highly reactive O ( 1 D) is produced according to the above equation (4). And these O ( 1 D) forms highly reactive hydroxy radical ( ⁇ OH) according to the equation (3). That is, according to the gas processing apparatus 1 of the present embodiment, O ( 1 D) and .OH having higher reactivity than the ozone (O 3 ) can be effectively generated from the gas to be treated G1. Thereby, even if the gas to be treated G1 contains a substance that is difficult to be decomposed by ozone (for example, formaldehyde etc.), it can be efficiently decomposed by O ( 1 D) and .OH. Become.
- ozone for example, formaldehyde etc.
- the O ( 3 P) reacts with oxygen (O 2 ) contained in the gas to be treated G 1 to generate ozone (O 3 ) according to the above-mentioned equation (2).
- a conventional gas processing apparatus using a low pressure mercury lamp causes the reactions of the above equations (5) and (2) to generate ozone (O 3 ), and this ozone (O 3 ) produces gas G 1 to be treated It is intended to decompose the offensive odor component contained. For this reason, the gas to be treated G1 is converted to a gas containing ozone (O 3 ) through the reactions of the equations (5) and (2), and is then led to the exhaust port. Thus, O (1 D) the reaction does not occur sufficiently in the expression (6) for generating. As a result, compared to the gas processing apparatus 1 of the present embodiment, the generation rates of highly reactive O ( 1 D) and .OH decrease.
- the gas processing apparatus 1 may be configured to include a plurality of excimer lamps 10 separated in the X direction between the intake port 5 and the exhaust port 7.
- the gas processing apparatus 1 may be configured to include a plurality of excimer lamps 10 separated between the intake port 5 and the exhaust port 7 in the direction crossing the X direction.
- the schematic plan view of the wind shielding member 20 with which the gas processing apparatus 1 of this structure is equipped is shown to FIG. 16A and 16B similarly to FIG. 12A and 12B.
- the gas processing apparatus 1 is provided with three long excimer lamps 10.
- Each of the excimer lamps 10 is disposed so as to penetrate the inside of the first opening 21 provided in each of the wind shield members 20. That is, each first air shielding member 20 is provided with three first openings 21.
- the second opening 22 provided in the wind shielding member (20a, 20c, 20e) is a second opening provided in the wind shielding member (20b, 20d) It is disposed at a position closer to the excimer lamp 10 than 22.
- the second opening 22 provided in the wind shielding member (20a, 20c, 20e) and the second opening provided in the wind shielding member (20b, 20d) 22 is the same as the separation distance from the excimer lamp 10, but the coordinates on the YZ plane at the position where the second opening 22 is formed are different.
- the wind shielding member 20 is configured in a circular shape and the respective second openings 22 are arranged concentrically and dispersed at equal intervals, the wind shielding shown in FIG. 17A.
- the wind shield members (20b, 20d) shown in FIG. 17B are formed.
- FIG. 17C is a schematic drawing for explaining the position of the second opening 22 provided in the wind shield member 20 shown in FIGS. 17A and 17B.
- the second opening 22 provided in the wind shielding member (20a, 20c, 20e) and the second opening 22 provided in the wind shielding member (20b, 20d) are both from the excimer lamp 10 Although the separation distance is common, it is shown that the formation position on the wind shield member 20 is different.
- the second opening 22 provided in the wind shielding member (20a, 20c, 20e) and the second opening 22 provided in the wind shielding member (20b, 20d) may partially overlap in the X direction.
- the treated gas G1 flows at a relatively high flow velocity along the X direction with respect to the overlapping portion, but flows in via the second opening 22 of the immediately preceding wind shield member 20.
- a part of the gas to be treated G1 collides with the shielding portion 23 of the adjacent wind shielding member 20. For this reason, the function to make the to-be-processed gas G1 stay in the area
- region where 2nd opening part 22 comrades of adjacent wind shielding members 20 overlap as seen from a X direction is less than 50% of the area of 2nd opening part 22.
- the position of the second opening 22 provided in the wind shielding member (20a, 20c, 20e) and the second position provided in the wind shielding member (20b, 20d) Even when the positions of the openings 22 are made different, the formation positions of the second openings 22 provided in these wind shielding members 20 may partially overlap in the X direction.
- the plurality of second openings 22 may be disposed in a distributed manner on the surface of the wind shield member 20, and may not necessarily be disposed concentrically. Further, the respective second openings 22 may not necessarily have the same shape or size on the same wind shielding member 20 or between the plurality of wind shielding members 20.
- FIG. 19A is a cross-sectional view schematically showing the structure of the gas processing apparatus 1 of the present embodiment, which is illustrated in accordance with FIG. That is, FIG. 19A corresponds to a cross-sectional view of the gas processing apparatus 1 of the present embodiment taken along the XY plane.
- FIG. 19B schematically shows a cross-sectional view of a part of the gas processing apparatus 1 shown in FIG. 19A cut in a direction (XZ plane) different from FIG. 19A.
- the gas processing apparatus 1 differs from the third embodiment in the orientation of the excimer lamp 10 in the longitudinal direction.
- the gas processing apparatus 1 includes a plurality of excimer lamps 10 whose longitudinal direction is the Z direction, and the excimer lamps 10 are spaced apart in the X direction.
- the gas processing apparatus 1 includes a plurality of wind shielding members 20 which are spaced apart in the X direction.
- the gas processing apparatus 1 is provided with five sheets of wind shielding members (20a, 20b, 20c, 20d, 20e).
- FIG. 20A and FIG. 20B are schematic plan views when the wind shield member 20 is viewed from the X direction, and are illustrated along with FIG. 12A and FIG. 12B.
- FIG. 20A corresponds to a schematic plan view of the wind shield members (20a, 20c, 20e)
- FIG. 20B corresponds to a schematic plan view of the wind shield members (20b, 20d).
- the air shielding member 20 includes a shielding portion 23 having the first opening 21 opened in the vicinity of the center, as in the configuration of the third embodiment.
- a plurality of second openings 22 are dispersedly provided at a position outside the first opening 21.
- the wind shielding member 20 has a rectangular flat surface in the direction parallel to the YZ plane.
- the excimer lamp 10 is disposed so as to penetrate the first opening 21 as viewed from the X direction (that is, the non-longitudinal direction of the excimer lamp 10) (FIG. 19B, FIG. 20A, FIG. 20B). reference).
- the first opening 21 is formed to cover the excimer lamp 10 on the YZ plane. That is, on the YZ plane, the opening region (first opening 21) is still formed between the excimer lamp 10 and the shielding portion 23.
- the formation location of the 2nd opening 22 differs between a wind shielding member (20a, 20c, 20e) and a wind shielding member (20b, 20d). That is, in the example shown in FIGS. 20A and 20B, the second opening 22 provided in the wind shielding member (20a, 20c, 20e) is a second opening provided in the wind shielding member (20b, 20d). It is disposed at a position closer to the excimer lamp 10 than the opening 22.
- the first openings 21 provided in the plurality of wind shielding members 20 overlap with each other, while the second openings provided in the plurality of wind shielding members 20
- the reference numeral 22 is formed at a position where a part thereof is shifted.
- the gas G1 to be treated can be temporarily retained in the region sandwiched between the adjacent wind shielding members 20, so O ( 1 D with high reactivity And OH can be effectively generated.
- the longitudinal direction of the excimer lamp 10 is a direction intersecting the flow direction of the gas to be treated G1.
- the excimer lamp 10 needs to be disposed. Under such circumstances, in the example shown in FIGS. 19A and 19B, the excimer lamp 10 is disposed at a position where the wind shield member 20 is not disposed in the X direction.
- the length of the portion where the excimer lamp 10 protrudes from the wind shielding member 20 can be sufficiently secured in the X direction, for example, at the position where the wind shielding member 20 is disposed Only the excimer lamp 10 may be disposed.
- the arrangement positions of the plurality of excimer lamps 10 in the Z direction may be made different.
- the position in the Z direction of the first opening 21 provided in the wind shield member 20 is also made different depending on the position of the excimer lamp 10.
- FIG. 22A is a schematic plan view when the wind shield member 20a is viewed from the X direction
- FIG. 22B is a schematic plan view when the wind shield member 20b is similarly viewed from the X direction.
- the arrangement positions of the plurality of excimer lamps 10 in the Y direction may be made different.
- the position related to the Y direction of the first opening 21 provided in the wind shielding member 20 is also made different according to the position of the excimer lamp 10.
- the longitudinal direction of the excimer lamp 10 is the Z direction, it is not limited to the Z direction, but is a direction intersecting the direction (X direction) in which the gas to be treated G1 flows. I don't care.
- Example 10 The gas processing apparatus 1 according to the present invention will be described with reference to an example in that the processing capacity is improved compared to the conventional configuration.
- the dimensions of the casing 3 and the excimer lamp 10 were the same in the gas processing devices of Example 1-1, Example 1-2, Example 1-3, and Comparative Example 1-1.
- the detailed conditions are as follows.
- the conditions of the wind shielding member 20 with which the gas processing apparatus 1 of each Example is equipped are as follows.
- Example 1-1 The number of the wind shielding members 20 which are disposed apart in the X direction: 2 sheets (20a, 20b) ⁇ Dimension on the YZ plane of the wind shield member 20: Circular shape with a radius of 48 mm ⁇ Length (thickness) according to the X direction of the wind shield member 20: 2 mm The distance between the shielding part 23 of the wind shield member 20 and the excimer lamp 10: maximum value 5 mm, minimum value 3 mm In the X direction, the distance between the end of the excimer lamp 10 on the intake port 5 side and the air shielding member 20a on the intake port 5 side is 50 mm.
- the separation distance between the air shielding member 20a on the air inlet 5 side and the air shielding member 20b on the air outlet 7 side 145 mm
- the distance between the air shielding member 20b on the exhaust port 7 side and the end of the excimer lamp 10 on the exhaust port 7 side is 100 mm.
- wind shielding member 20a and the wind shielding member 20b were arrange
- Example 1-2 The number of the wind shielding members 20 arranged to be separated in the X direction: 4 (20a, 20b, 20c, 20d) -The number of shielding parts 23 which each wind shielding member 20 has: Two-The dimension on YZ plane of the wind shielding member 20: When it combines with the shielding part 23 and the 1st opening part 21, it is circular shape with a radius of 80 mm (refer FIG. ) ⁇ Length (thickness) according to X direction of shielding part 23: 2 mm -A separation distance between the shielding portions 23 of the respective wind shielding members 20 (see FIG.
- the separation distance between the wind shielding member 20b and the wind shielding member 20c 34 mm -The distance between the wind shielding member 20c and the wind shielding member 20d in the X direction: 34 mm
- the distance between the air shielding member 20 d on the exhaust port 7 side and the end of the excimer lamp 10 on the exhaust port 7 side is 100 mm.
- the wind shielding member 20 a and the wind shielding member 20 b are arranged to have the same shape as the other when the one is rotated by 90 ° on the YZ plane.
- the wind shielding member 20 c and the wind shielding member 20 d are arranged to have the same shape as the other when the one is rotated by 90 ° on the YZ plane.
- the wind shielding member 20a and the wind shielding member 20c, and the wind shielding member 20b and the wind shielding member 20d have the same shape when viewed from the X direction.
- Example 1-3 The number of the wind shielding members 20 which are disposed apart in the X direction: three sheets (20a, 20b, 20c) ⁇ Dimensions of the wind shield member 20 on the YZ plane: a circular shape with a radius of 70 mm (see FIG.
- the wind shielding member 20a and the wind shielding member 20b are arranged so as to have the same shape as the other when rotated by 30 ° on the YZ plane.
- the wind shielding member 20 b and the wind shielding member 20 c are arranged so as to have the same shape as the other when the one is rotated by 30 ° on the YZ plane.
- Example 1-1 has the highest processing capacity as compared to Examples 1-2 and 1-3. This is presumed to be due to the fact that the structure of the first embodiment is most likely to cause turbulent flow of the gas to be treated G1 as compared with the structures of the second and third embodiments. As described above in the section of the first embodiment, as a result of the occurrence of a large amount of turbulent flow at the downstream position of the wind shield member 20, the malodor / toxic substance (here, HCHO) contained in the gas to be treated G1 is completely decomposed The mixed air flow is mixed with the air flow that has remained without decomposition of part of the offensive odor and harmful substance.
- HCHO malodor / toxic substance
- the treated gas G1 containing an offensive odor or harmful substance can easily flow in the vicinity of the excimer lamp 10 even at a position after the wind shield member 20, so that the ultraviolet light L1 emitted from the excimer lamp 10 is irradiated. It is inferred that the decomposition ability (treatment ability) of the offensive odor and harmful substance is further improved.
- Step S1 An experimental unit # 1 simulating the gas processing apparatus 1, VOC monitor (trade name "Tiger”, trade name “Tiger”, 11) was placed in a 110-liter laboratory vessel having a hole of ⁇ 10. A 7 eV lamp type) and a fan for stirring were installed. It arrange
- the gas processing apparatus 1 of 3rd embodiment was used for experimental unit # 1.
- Step S2 100 microliter of formaldehyde solution (Wako Pure Chemical Industries, Ltd., product code 064-00406, special grade reagent) dropped in a ⁇ 30 glass petri dish is placed in the experimental container, and the fan for stirring is added. Turned. At this time, the hole of ⁇ 10 opened in the experimental container was closed with an aluminum tape.
- formaldehyde solution (Wako Pure Chemical Industries, Ltd., product code 064-00406, special grade reagent) dropped in a ⁇ 30 glass petri dish is placed in the experimental container, and the fan for stirring is added. Turned. At this time, the hole of ⁇ 10 opened in the experimental container was closed with an aluminum tape.
- Step S3 When the VOC monitor became about 4 ppm, the stirring fan was stopped and the petri dish was taken out from the experimental container.
- Step S4 Close the experimental container, start the stirring fan, remove the aluminum tape covering the hole of ⁇ 10, and dilute the gas in the experimental container with air outside the experimental container until it reaches 3 ppm. did.
- Step S5 The hole was closed with an aluminum tape, the stirring fan was stopped, and the experimental unit was started.
- Step S6 The start time of the experimental unit was set to 0 seconds, and the indicated value of the VOC monitor was recorded every 30 seconds.
- Example 2-2 Comparative Examples 2-1 to 2-3
- the above steps S1 to S6 were performed in the same manner as in Example 1 with the experimental unit # 1 replaced with the experimental units # 2 to # 5, and the indicated values of the VOC monitor were recorded.
- Each of the wind shielding members provided in each unit of Example 2-2, Comparative Example 2-2, and Comparative Example 2-3 has the second opening 22 as in Example 2-1.
- a wind shield 20 (see FIG. 12A) was used.
- FIG. 23 is a graph showing the comparison result of the indicator values recorded by the above method.
- the horizontal axis indicates the operation time
- the vertical axis indicates the indicated value of the VOC monitor. According to FIG. 23, it can be seen that in all of Examples 2-1 to 2-2 and Comparative examples 2-1 to 2-3, the decomposition rate of HCHO is faster than that in the reference example, and the decomposition effect is obtained.
- Example 2-2 and Comparative Example 2-1 are compared, it can be seen that Example 2-2 in which the wind shield member 20 is provided can realize high resolving performance of HCHO. Furthermore, when Example 2-2 and Example 2-1 are compared, it can be seen that the degradation performance of HCHO is dramatically improved in Example 2-1 over Example 2-2.
- the light emitting tube 13 has been described as having a so-called “single tube structure” tube body 14.
- the second electrode (internal electrode) 12 is disposed inside the tubular body 14 and is filled with a discharge gas 10G (for example, Xe).
- the first electrode (external electrode) 11 is disposed on the wall surface of the second embodiment.
- the internal electrode 12 has a shape (cylindrical shape) extending along the X direction, and the external electrode 11 emits the ultraviolet light L1 generated in the tube 14 to the outside of the tube 14 It has a mesh shape (mesh shape) or a linear shape so as not to interfere with things.
- the excimer lamp 10 included in the gas processing apparatus 1 according to the present invention is not limited to the case of including the above-described single-tube structure tube 14, and may be a so-called “double tube structure” or “flat tube structure” tube 14. It does not matter as what is provided.
- FIG. 25 is a drawing schematically illustrating the structure of an excimer lamp 10 having a so-called “double tube structure”, following FIG.
- the excimer lamp 10 shown in FIG. 25 has two tubes 14 (14a, 14b). It has a cylindrical outer tube 14a and a cylindrical tube 14b coaxial with the tube 14a inside the tube 14a and having a smaller inside diameter than the tube 14a.
- the tubular body 14a and the tubular body 14b are sealed at the end portion in the X direction (not shown), and an annular light emitting space is formed between them, and the discharge gas 10G is contained in the space. Be filled.
- the second electrode (internal electrode) 12 is disposed on the inner wall surface of the inner tube 14 b
- the first electrode (external electrode) 11 is disposed on the outer wall surface of the outer tube 14 a.
- the inner electrode 12 has a film shape
- the outer electrode 11 has a mesh shape (mesh shape) or a wire shape so as not to prevent the ultraviolet light L1 generated in the tube 14 from being emitted to the outside of the tube 14 Take on.
- FIG. 26 is a drawing schematically illustrating the structure of the excimer lamp 10 having a so-called “flat tube structure” in line with FIG.
- the excimer lamp 10 shown in FIG. 26 has a tube 14 that has a rectangular shape when viewed from the X direction.
- the excimer lamp 10 includes a first electrode 11 disposed on the outer surface of the tube 14 and a second electrode 12 disposed on the outer surface of the tube 14 and facing the first electrode 11.
- the first electrode 11 and the second electrode 12 both have a mesh shape (network shape) or a linear shape so as not to prevent the ultraviolet rays L1 generated in the tube 14 from being emitted to the outside of the tube 14 ing.
- FIG. 24 and 25 show the case where the shape of the cross section in the YZ plane of the excimer lamp 10 is circular, and FIG. 26 shows the case where the shape of the cross section is rectangular.
- the shape of the cross section in the YZ plane of the excimer lamp 10 is not limited to a circle or a rectangle, and various shapes may be employed.
- the intake port 5 and the exhaust port 7 may be spaced apart in the X direction, and can be provided at any position within this limitation.
- the wind shield member 20 is described as having a plane parallel to a plane (YZ plane) orthogonal to the flow path direction (X direction).
- the wind shield member 20 may be disposed so as to have a plane parallel to at least a plane intersecting the X direction.
- the number of excimer lamps 10 provided in the gas processing apparatus 1 and the number of the wind shields 20 are not limited to the numbers described in the above-described embodiment.
- the positions of the second openings 22 may be shifted at least on a certain pair of adjacent wind shielding members 20 on the YZ plane. That is, the second opening 22 provided in the air shielding member 20a disposed at the position closest to the air inlet 5 is a shielding part 23 provided in at least one of the air shielding members 20 in the X direction; It may be disposed at a position where at least one part overlaps.
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Abstract
Description
筒状の筐体と、
酸素及び水分を含む被処理気体を前記筐体の内側に導入する吸気口と、
前記筐体の内側に収容され、放電用ガスが充填されてなり、第一方向に延伸する管体を含むエキシマランプと、
前記エキシマランプから出射された紫外線が照射された前記被処理気体を、前記筐体の外側に導出する排気口と、
前記第一方向から見たときに、前記管体を取り囲むように、又は前記管体を挟み込むように配置された遮風部材とを備え、
前記遮風部材は、少なくとも、前記管体の前記第一方向に係る端部のうちの前記吸気口に近い側の端部と、前記管体の前記第一方向の中央部との間の位置に配置されていることを特徴とする。
前記第一方向から見て前記管体を覆うように開口された第一開口部と、前記第一開口部よりも外側の領域であって、開口が設けられていない遮蔽部とを有し、
前記第一開口部の内側に位置する前記管体と、前記遮蔽部の前記第一開口部側の内縁との離間距離が1mm以上10mm以下であるものとしても構わない。
前記遮風部材は、前記第一方向に離間して2つ以上が配置され、
前記第一方向に隣接する2つの前記遮風部材のうちの前記吸気口に近い側に位置する第一遮風部材が備える前記第一開口部の少なくとも一部と、前記2つの前記遮風部材のうちの前記排気口に近い側に位置する第二遮風部材が備える前記遮蔽部とが、前記第一方向から見たときに、互いに重なり合うものとしても構わない。
前記第一開口部は、回転非対称な形状を有し、
前記第一遮風部材を所定の角度だけ回転すると、前記第一遮風部材が備える前記遮蔽部の前記第一開口部側の内縁と、前記第二遮風部材が備える前記遮蔽部の前記第一開口部側の内縁とが、前記第一方向から見たときに重なり合うものとしても構わない。
前記第一方向から見たときに、前記管体を挟んで離間した2箇所以上の位置に配置された、開口が設けられていない遮蔽部と、
2箇所以上の前記遮蔽部に挟まれた空間領域である第一開口部とを有してなり、
前記第一開口部内に位置する前記管体と、前記遮蔽部の前記第一開口部側の外縁との離間距離が1mm以上10mm以下であるものとしても構わない。
前記第一方向に隣接する2つの前記遮風部材のうちの前記吸気口に近い側に位置する第一遮風部材が備える前記第一開口部の少なくとも一部と、前記2つの前記遮風部材のうちの前記排気口に近い側に位置する第二遮風部材が備える前記遮蔽部とが、前記第一方向から見たときに、互いに重なり合うものとしても構わない。
前記第一方向に離間して2つ以上が配置されており、
前記第一方向から見て前記管体を覆うように開口された第一開口部と、
前記第一開口部よりも外側の領域であって、開口が設けられていない遮蔽部と、
前記遮蔽部の領域内において、部分的に複数の開口が分散して設けられた第二開口部とを備え、
前記吸気口に最も近い位置に配置された前記遮風部材に設けられた前記第二開口部は、前記第一方向に関して、少なくともいずれか一つの前記遮風部材に設けられた前記遮蔽部と、少なくとも一部分が重なり合う位置に配置されているものとしても構わない。
複数の前記第二開口部は、前記遮風部材の前記面上において同心円状に配置されているものとしても構わない。この場合、遮風部材を単に回転させることで、複数の遮風部材に設けられた第二開口部同士の相対的な位置関係を調整することができる。
すなわち、前記気体処理装置は、
前記第一方向と交差する方向を長手方向とする長尺形状を示し、前記第一方向に離間して配置された複数の前記エキシマランプを備え、
複数の前記エキシマランプのうち、少なくとも2本の前記エキシマランプは、前記長手方向に係る部分が、異なる前記遮風部材に設けられた前記長手方向に平行な方向に延伸する形状を示す前記第一開口部内に位置するように配置されることができる。
前記遮風部材が、複数の前記エキシマランプのそれぞれが備える前記管体を取り囲むように、又は前記管体を挟み込むように配置されているものとしても構わない。
本発明の気体処理装置の第一実施形態について、説明する。
図1は、本実施形態の気体処理装置の構造を模式的に示す断面図である。図2は、図1内の領域A1部分を拡大した模式的な斜視図である。
本実施形態の気体処理装置1によれば、従来の装置と比べて悪臭成分の分解性能が向上する点につき、以下において説明する。
O2 + hν(λ1) → O(1D) + O(3P) ‥‥(1)
O(3P) + O2 → O3 ‥‥(2)
O(1D) + H2O → ・OH + ・OH ‥‥(3)
気体処理装置1は、複数本のエキシマランプ10を備えていても構わない(図7A、図7B参照)。図7Aは、気体処理装置1が、2本のエキシマランプ10を備える場合において、遮風部材20aの近傍のみを抽出して模式的に図示した斜視図である。また、図7Bは、気体処理装置1が、4本のエキシマランプ10を備える場合において、遮風部材20aの近傍のみを抽出して模式的に図示した斜視図である。いずれの場合においても、遮風部材20aは、エキシマランプ10の本数に応じた数の第一開口部21を備え、各エキシマランプ10が各第一開口部21を貫通するように配置されるものとして構わない。
本発明の気体処理装置の第二実施形態について、第一実施形態と異なる箇所を中心に説明する。
本実施形態の気体処理装置1の変形例について説明する。
本発明の気体処理装置の第三実施形態について、説明する。
図11は、本実施形態の気体処理装置の構造を模式的に示す断面図である。気体処理装置1は、筐体3と、吸気口5と、エキシマランプ10と、排気口7と、複数枚の遮風部材20(20a,20b,20c,20d,20e)とを備える。なお、以下では、吸気口5から排気口7に向かう方向をX方向とし、このX方向に直交する平面をYZ平面として規定する。図11には、X、Y、及びZの3方向が、気体処理装置1と共に図示されている。ここでは、X、Y、及びZの3方向が、右手系の座標系であるとして示されている。
本実施形態の気体処理装置1によれば、従来の装置と比べて悪臭成分の分解性能が向上する点につき、以下において説明する。
O2 + hν(λ1) → O(1D) + O(3P) ‥‥(1)
O(3P) + O2 → O3 ‥‥(2)
O(1D) + H2O → ・OH + ・OH ‥‥(3)
O3 + hν(λ2) → O2 + O(1D) ‥‥(4)
O2 + hν (185nm) → O(3P) + O(3P) ‥‥(5)
O3 + hν (254nm) → O2 + O(1D)・・・(6)
本実施形態の気体処理装置1の変形例について、図面を参照して説明する。なお、各変形例同士を組み合わせることで気体処理装置1を実現することも可能である。
本発明の気体処理装置の第四実施形態について、上記各実施形態と異なる箇所のみを説明する。
本実施形態の気体処理装置1の変形例について、図面を参照して説明する。なお、各変形例同士を組み合わせることで気体処理装置1を実現することも可能である。
本発明に係る気体処理装置1によれば、従来構成よりも処理能力が向上する点につき、実施例を参照して説明する。
第一実施形態の気体処理装置1(実施例1-1)、第二実施形態の気体処理装置1(実施例1-2)、第三実施形態の気体処理装置1(実施例1-3)、及び、気体処理装置1から遮風部材20を取り外した装置(比較例1-1)による、処理対象物質の分解能力をシミュレーションによって評価した。
・筐体3の吸気口5側のYZ平面の断面積:7854mm2
・筐体3の排気口7側のYZ平面の断面積:7854mm2
・筐体3のX方向に係る長さ:485mm
・エキシマランプ10のX方向に係る長さ:185mm(ベース部35を含む)、115mm(ベース部35を除く管体14)
・エキシマランプ10のYZ平面上の外径に係る長さ(直径):16mm
・エキシマランプ10の吸気口5側の端部と、筐体3の吸気口5との離間距離:500mm
・エキシマランプ10の排気口7側の端部と、筐体3の排気口7との離間距離:500mm
・エキシマランプ10の管体14内に充填された放電用ガス:Xe
・X方向に離間して配置される遮風部材20の枚数:2枚(20a,20b)
・遮風部材20のYZ平面上の寸法:半径48mmの円形状
・遮風部材20のX方向に係る長さ(厚み):2mm
・遮風部材20の遮蔽部23とエキシマランプ10との離間距離:最大値5mm、最小値3mm
・X方向に関して、エキシマランプ10の吸気口5側の端部と、吸気口5側の遮風部材20aとの離間距離:50mm
・X方向に関して、吸気口5側の遮風部材20aと排気口7側の遮風部材20bとの離間距離:145mm
・X方向に関して、排気口7側の遮風部材20bと、エキシマランプ10の排気口7側の端部との離間距離:100mm
・X方向に離間して配置される遮風部材20の枚数:4枚(20a,20b,20c,20d)
・各遮風部材20が有する遮蔽部23の数:2枚
・遮風部材20のYZ平面上の寸法:遮蔽部23と第一開口部21と合わせると、半径80mmの円形状(図10A参照)
・遮蔽部23のX方向に係る長さ(厚み):2mm
・各遮風部材20が有する遮蔽部23同士の離間距離(図10A参照):26mm
・各遮風部材20が有する遮蔽部23とエキシマランプ10との離間距離:5mm
・X方向に関して、エキシマランプ10の吸気口5側の端部と、吸気口5側の遮風部材20aとの離間距離:100mm
・X方向に関して、遮風部材20aと遮風部材20bとの離間距離:34mm
・X方向に関して、遮風部材20bと遮風部材20cとの離間距離:34mm
・X方向に関して、遮風部材20cと遮風部材20dとの離間距離:34mm
・X方向に関して、排気口7側の遮風部材20dと、エキシマランプ10の排気口7側の端部との離間距離:100mm
・X方向に離間して配置される遮風部材20の枚数:3枚(20a,20b,20c)
・遮風部材20のYZ平面上の寸法:半径70mmの円形状(図12A参照)
・遮風部材20のX方向に係る長さ(厚み):2mm
・遮風部材20の遮蔽部23とエキシマランプ10との離間距離:10mm
・遮風部材20が有する第二開口部22:面積50mm2で放射状に6箇所形成
・X方向に関して、エキシマランプ10の吸気口5側の端部と、吸気口5側の遮風部材20aとの離間距離:100mm
・X方向に関して、吸気口5側の遮風部材20aと排気口7側の遮風部材20bとの離間距離:35mm
・X方向に関して、遮風部材20bと遮風部材20cとの離間距離:35mm
・X方向に関して、排気口7側の遮風部材20cと、エキシマランプ10の排気口7側の端部との離間距離:150mm
遮風部材20を備えない点を除けば、各実施例1-1~1-3の気体処理装置1と共通の条件とした。
実施例1-1~1-3、及び比較例1-1の各気体処理装置に対し、エキシマランプ10を同一の照度で点灯しながら、1ppmのHCHOを含む被処理気体G1を100LPM(L/分)の流量で吸気口5から筐体3内に導入した。そして、排気口7側から取り出された処理済の気体G2に含まれるHCHOの濃度を評価した。評価結果を下記表1に示す。
下記の実験ユニットを用いて、実際に実験を行った。実験ユニットは、以下の表2の通りである。
《ステップS1》φ10の穴が開いた、容積110リットルの実験用容器に、気体処理装置1を模擬した実験ユニット#1、VOCモニタ(理研計器(株)製、商品名「Tiger」、11.7eVランプタイプ)、及び撹拌用のファンを設置した。実験ユニット#1の排気口7から排気される気体がVOCモニタによって検出できるように配置した。なお、実験ユニット#1は、第三実施形態の気体処理装置1が用いられた。
実験ユニット#1を実験ユニット#2~#5に代えて、実施例1と同様に、上記各ステップS1~S6を実行し、VOCモニタの指示値を記録した。なお、実施例2-2、比較例2-2、及び比較例2-3の各ユニットが備える遮風部材としては、いずれも、実施例2-1と同様に、第二開口部22を有する遮風部材20(図12A参照)が用いられた。
実験ユニットを実験用容器に入れないこと以外は、実施例1と同様にして、VOCモニタの指示値を記録した。ホルムアルデヒド(以下、「HCHO」と記載)が時間の経過と共に自然的に分解するため、この分解速度を検出することで比較基準を設定する意図で、この参考例に係るデータが取得されている。
図23は、上記の方法で記録された指示値の比較結果を示すグラフである。図23において、横軸は運転時間を示し、縦軸はVOCモニタの指示値を示す。図23によれば、実施例2-1~2-2、比較例2-1~2-3共に、参考例と比べるとHCHOの分解速度が速く、分解効果を有していることが分かる。
以下、別実施形態につき説明する。
3 : 筐体
5 : 吸気口
6 : ファン
7 : 排気口
10 : エキシマランプ
10G : 放電用ガス
11 : 外部電極(第一電極)
12 : 内部電極(第二電極)
13 : 発光管
14 : 管体
14a,14b : 管体
15 : 第一封止部
16 : 第二封止部
17 : 金属箔
18 : 外部リード
19 : 光路部
20 : 遮風部材
20a,20b,20c,20d,20e : 遮風部材
21 : 第一開口部
22 : 第二開口部
23 : 遮蔽部
35(35a,35b) : ベース部
G1 : 被処理気体
G2 : 処理後の気体
L1 : エキシマランプからの出射光(紫外線)
Claims (18)
- 筒状の筐体と、
酸素及び水分を含む被処理気体を前記筐体の内側に導入する吸気口と、
前記筐体の内側に収容され、放電用ガスが充填されてなり、第一方向に延伸する管体を含むエキシマランプと、
前記エキシマランプから出射された紫外線が照射された前記被処理気体を、前記筐体の外側に導出する排気口と、
前記第一方向から見たときに、前記管体を取り囲むように、又は前記管体を挟み込むように配置された遮風部材とを備え、
前記遮風部材は、少なくとも、前記管体の前記第一方向に係る端部のうちの前記吸気口に近い側の端部と、前記管体の前記第一方向の中央部との間の位置に配置されていることを特徴とする、気体処理装置。 - 前記遮風部材は、
前記第一方向から見て前記管体を覆うように開口された第一開口部と、前記第一開口部よりも外側の領域であって、開口が設けられていない遮蔽部とを有し、
前記第一開口部の内側に位置する前記管体と、前記遮蔽部の前記第一開口部側の内縁との離間距離が1mm以上10mm以下であることを特徴とする、請求項1に記載の気体処理装置。 - 前記遮風部材は、前記第一方向に離間して2つ以上が配置され、
前記第一方向に隣接する2つの前記遮風部材のうちの前記吸気口に近い側に位置する第一遮風部材が備える前記第一開口部の少なくとも一部と、前記2つの前記遮風部材のうちの前記排気口に近い側に位置する第二遮風部材が備える前記遮蔽部とが、前記第一方向から見たときに、互いに重なり合うことを特徴とする、請求項2に記載の気体処理装置。 - 前記第一開口部は、回転非対称な形状を有し、
前記第一遮風部材を所定の角度だけ回転すると、前記第一遮風部材が備える前記遮蔽部の前記第一開口部側の内縁と、前記第二遮風部材が備える前記遮蔽部の前記第一開口部側の内縁とが、前記第一方向から見たときに重なり合うことを特徴とする、請求項3に記載の気体処理装置。 - 前記第一開口部は、楕円形状又は長方形状であることを特徴とする、請求項4に記載の気体処理装置。
- 前記遮風部材は、
前記第一方向から見たときに、前記管体を挟んで離間した2箇所以上の位置に配置された、開口が設けられていない遮蔽部と、
2箇所以上の前記遮蔽部に挟まれた空間領域である第一開口部とを有してなり、
前記第一開口部内に位置する前記管体と、前記遮蔽部の前記第一開口部側の外縁との離間距離が1mm以上10mm以下であることを特徴とする、請求項1に記載の気体処理装置。 - 前記遮風部材は、前記第一方向に離間した2箇所以上の位置に配置され、
前記第一方向に隣接する2つの前記遮風部材のうちの前記吸気口に近い側に位置する第一遮風部材が備える前記第一開口部の少なくとも一部と、前記2つの前記遮風部材のうちの前記排気口に近い側に位置する第二遮風部材が備える前記遮蔽部とが、前記第一方向から見たときに、互いに重なり合うことを特徴とする、請求項6に記載の気体処理装置。 - 前記遮風部材が備える前記遮蔽部は、半円形状又は長方形形状であることを特徴とする、請求項7に記載の気体処理装置。
- 前記遮風部材は、
前記第一方向に離間して2つ以上が配置されており、
前記第一方向から見て前記管体を覆うように開口された第一開口部と、
前記第一開口部よりも外側の領域であって、開口が設けられていない遮蔽部と、
前記遮蔽部の領域内において、部分的に複数の開口が分散して設けられた第二開口部とを備え、
前記吸気口に最も近い位置に配置された前記遮風部材に設けられた前記第二開口部は、前記第一方向に関して、少なくともいずれか一つの前記遮風部材に設けられた前記遮蔽部と、少なくとも一部分が重なり合う位置に配置されていることを特徴とする、請求項1に記載の気体処理装置。 - 全ての前記遮風部材に設けられた前記第二開口部のそれぞれは、前記第一方向に関して、少なくともいずれか一つの前記遮風部材に設けられた前記遮蔽部と、少なくとも一部が重なり合う位置に配置されていることを特徴とする、請求項9に記載の気体処理装置。
- 前記エキシマランプは、
前記第一方向を長手方向とする長尺形状を示し、
複数の前記遮風部材に設けられた前記第一開口部を貫通するように配置されていることを特徴とする、請求項9又は10に記載の気体処理装置。 - 前記遮風部材は、前記第一方向に交差する面を有し、
複数の前記第二開口部は、前記遮風部材の前記面上において同心円状に配置されていることを特徴とする、請求項11に記載の気体処理装置。 - 前記第一方向と交差する方向を長手方向とする長尺形状を示し、前記第一方向に離間して配置された複数の前記エキシマランプを備え、
複数の前記エキシマランプのうち、少なくとも2本の前記エキシマランプは、前記長手方向に係る部分が、異なる前記遮風部材に設けられた前記長手方向に平行な方向に延伸する形状を示す前記第一開口部内に位置するように配置されていることを特徴とする、請求項9又は10に記載の気体処理装置。 - 少なくとも2枚の前記遮風部材は、前記長手方向に平行な方向に関して、前記第一開口部の形成位置がずれていることを特徴とする、請求項13に記載の気体処理装置。
- 前記エキシマランプは、前記第一方向に関して、前記遮風部材から一部分が突出して配置されていることを特徴とする、請求項13又は14に記載の気体処理装置。
- 前記第一開口部内に位置する前記エキシマランプと、前記第一開口部の外側に位置する前記遮蔽部との間に、1mm以上10mm以下の間隙が設けられていることを特徴とする、請求項11~15のいずれか1項に記載の気体処理装置。
- 前記放電用ガスは、Xeを含み、
前記エキシマランプから出射される前記紫外線は、160nm以上180nm未満の範囲内に含まれる第一波長帯の成分と、180nm以上200nm未満の範囲内に含まれる第二波長帯の成分とを含むことを特徴とする、請求項1~16のいずれか1項に記載の気体処理装置。 - 複数の前記エキシマランプを備え、
前記遮風部材が、複数の前記エキシマランプのそれぞれが備える前記管体を取り囲むように、又は前記管体を挟み込むように配置されていることを特徴とする、請求項1~17のいずれか1項に記載の気体処理装置。
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Also Published As
Publication number | Publication date |
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CN111372616B (zh) | 2022-04-01 |
KR102432205B1 (ko) | 2022-08-12 |
CN114225618A (zh) | 2022-03-25 |
KR20200085823A (ko) | 2020-07-15 |
JP7232428B2 (ja) | 2023-03-03 |
JP2022002749A (ja) | 2022-01-11 |
JP6996572B2 (ja) | 2022-02-04 |
JPWO2019131124A1 (ja) | 2020-10-22 |
CN111372616A (zh) | 2020-07-03 |
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