WO2014146211A2 - Amélioration de la transmittance de rayons ultraviolets dans des milieux gazeux - Google Patents
Amélioration de la transmittance de rayons ultraviolets dans des milieux gazeux Download PDFInfo
- Publication number
- WO2014146211A2 WO2014146211A2 PCT/CL2014/000009 CL2014000009W WO2014146211A2 WO 2014146211 A2 WO2014146211 A2 WO 2014146211A2 CL 2014000009 W CL2014000009 W CL 2014000009W WO 2014146211 A2 WO2014146211 A2 WO 2014146211A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lamp
- gas
- air
- light
- transmittance
- Prior art date
Links
- 238000002834 transmittance Methods 0.000 title description 23
- 239000010453 quartz Substances 0.000 claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 34
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
- 229910052734 helium Inorganic materials 0.000 claims description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 239000001307 helium Substances 0.000 claims description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 229910000497 Amalgam Inorganic materials 0.000 claims 1
- 229910018503 SF6 Inorganic materials 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000007664 blowing Methods 0.000 claims 1
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 229910052743 krypton Inorganic materials 0.000 claims 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052754 neon Inorganic materials 0.000 claims 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims 1
- 229910052756 noble gas Inorganic materials 0.000 claims 1
- 229920000515 polycarbonate Polymers 0.000 claims 1
- 239000004417 polycarbonate Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 229910052704 radon Inorganic materials 0.000 claims 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 claims 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims 1
- 229960000909 sulfur hexafluoride Drugs 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 239000012780 transparent material Substances 0.000 claims 1
- 229910052724 xenon Inorganic materials 0.000 claims 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims 1
- 230000006866 deterioration Effects 0.000 abstract description 3
- 230000000249 desinfective effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 15
- 230000005855 radiation Effects 0.000 description 15
- 238000012360 testing method Methods 0.000 description 11
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002070 germicidal effect Effects 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- DIALWIXNOYTADT-UHFFFAOYSA-N [He].[N].[Ar] Chemical compound [He].[N].[Ar] DIALWIXNOYTADT-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- -1 organic remains Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 230000037380 skin damage Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
-
- 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
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3223—Single elongated lamp located on the central axis of a turbular reactor
Definitions
- UV light is part of the light emitted by the sun, its wavelength is shorter than that of the visible spectrum and is between 100 and 400 nm.
- UV - A Ultraviolet light is classified, according to its wavelength, into UV - A, UV - B and UV - C.
- UV - A radiation has the longest wavelength, between 320 and 400 nm. It is the least harmful to living beings, however due to its high intensity and depending on the exposure time, it can cause skin damage. 99% of the ultraviolet rays that reach the Earth's surface from the sun are of the UV - A type.
- UV-B radiation has an average wavelength between 290 to 320 nm. It is partially removed by ozone, and because it is very energetic, it produces the most biological damage. On the other hand, it is very sensitive to changes in ozone concentration and weather conditions.
- UV - C radiation has the shortest wavelength, from 200 to 290 nm. It is completely blocked at about 35 km altitude by stratospheric ozone. It is the most harmful type of UV light, although it does not exist naturally. Artificially, it is produced by lamps inside which there are mercury particles. A voltaic arc travels through the inert gas vaporizing the mercury, emitting UV-C radiation. It is used both for the treatment of water and air, being that the UV radiation of 253.7 nm is the one with the highest germicidal capacity.
- UV light lamp acts as a source of emission on the surface or medium to be disinfected.
- UV radiation with germicidal properties with a wavelength of 254 nm acts on the DNA of microorganisms, modifying it and preventing them from reproducing.
- the efficiency of the disinfection process depends on the following factors: • Temperature: The germicidal UV-C light emission efficiency of the lamp increases with temperature, obtaining the best results at 40 ° C, as shown in Figure 1: Efficiency of UV light emission - Cen function of temperature
- Turbidity Some organic and inorganic substances such as sediments, dust, organic remains, tannins, chemicals such as iron (Fe), etc. decrease the transmittance of UV light in water. This forces the water to be filtered so that it is free of interference and in such a way to obtain UV light everywhere without interactions with these elements.
- Suspended solids Suspended particles create shadows that protect microorganisms, reducing disinfection efficiency.
- EP 0275122 describes a box, called a semiconductor, that allows the transmission of said rays to a card with electronic circuits - commonly called chip.
- the patents mentioned below use physical support to improve transmittance:
- EP 1353199 mentions the use of optical fiber to transmit the ultraviolet ray and thereby prevent its deterioration.
- WO 9807064 also mentions the use of optical fiber in which electrodes that produce UV radiation are inserted.
- WO 2004059694 mentions the use of a coaxial ray guide
- UV to optimize a water sterilization process.
- WO 2008060465 refers to a film to which a gel is added to improve the transmission of UV rays.
- WO 9836324 mentions the use of a silicone polymer membrane to improve the transmittance of UV rays.
- WO 2008062923 proposes to increase the installed power of UV generation to obtain better results. Scope
- the disinfection by means of ultraviolet rays is a process of physical disinfection where a UV light lamp acts as an emitting source on the surface or medium to be disinfected and the germicidal UV radiation (254 nm) coming from the lamp acts on the DNA of the microorganisms, modifying it and preventing them from reproducing.
- the objective of the method described in this Patent Application is to prevent the deterioration of ultraviolet rays when they pass through gaseous media, in particular the air. In this way it is possible to increase the efficiency of the equipment used for disinfection and reduce energy consumption.
- the method described in this Application has not been used so far. Unlike what is described in other patents, in this case the solution of the problem has focused on the characteristics of the medium that pass through the UV rays and its influence on the transmittance.
- the transmittance measuring equipment was filled with each of the gases indicated below.
- the surprising effect that was observed is that there are important variations according to the gaseous composition that is around the UV emitting lamp. This fact has not been taken into account until now in UV transmission processes.
- Transmittance tests were carried out with 4 helium, nitrogen, argon and carbon dioxide (He, N 2 , Ar, C0 2 ) gases in a Gas laboratory based on the hypothesis that ultraviolet light at 254nm is transmitted more efficiently in a pure gaseous medium. As a surprising result, it was obtained that, in pure gases, UV light is transmitted more efficiently than in air.
- Figure 1 shows: Efficiency of UV-C light emission as a function of temperature.
- Figure 2 shows: UV - C intensity versus distance to the lamp axis.
- Figure 3 shows a disinfection device
- Figure 4 shows a transmittance measuring device in perspective
- FIG. 5 details the operation of the measuring equipment
- Figure 6 shows the filling of the quartz tube tube
- Figure 7 shows the measurement of the intensity of UV light on the outer wall of the quartz tube.
- Figure 8 shows the graph of 15 Watts Lamp
- Figure 9 shows the graph Intensity of UV Light in different Gaseous media.
- Figure 10 shows the UV intensity graph on a quartz wall with different gases inside.
- Water disinfection equipment by means of UV rays consists of 4 components as shown in figure 3: the housing (1), the UV emitting lamp (2) surrounded by a quartz jacket (3) and a electrical board (4). Water circulates inside the shell around the quartz tube. The electrical board allows you to control the intensity of the lightning emission. To apply this technology in water disinfection, the UV generator lamp is protected from water with a quartz jacket to prevent electrical failures.
- UV light is not transmitted in an efficient way when the medium it passes through is air. This is the problem to solve, which all UV disinfection equipment has since the interior space of the quartz that protects the lamps is full of air, which causes it to lose intensity even before leaving the protective quartz tube.
- the UV radiation with a wavelength of 254 nm was measured in pure gaseous media: helium - nitrogen - argon and carbon dioxide (He, N 2 , Ar, C0 2 ) in a specifically designed equipment for this purpose.
- the equipment used for such tests is viewed in perspective in Figure 4 and its operation is expressed schematically in Figure 5.
- the UV light emitting lamp (11) is inside the quartz tube (10), connected to the dashboard electric (5).
- a gas can be blown through a hole that is in its lower part (8) and this can exit through another hole (9) located in the upper part.
- the UV rays emitted (12) by the lamp pass through the gaseous medium and its intensity is measured by a sensor (7) connected to a radiometer (6).
- the distance between the quartz and the sensor is 26.2 cm. The procedure used in these transmittance tests is described below:
- the same equipment was used but with a variant: the sensor (7) was placed directly on the quartz tube (11).
- Figure 6 shows the filling of the quartz tube (11) by inserting a hose (10) through which the gas is blown into the tube that displaces the air contained therein.
- the surprising effect is that the transmissibility of ultraviolet waves depends on the gas they pass through.
- the gases with which the best results were obtained were helium (He) and carbon dioxide (Q3 ⁇ 4) where there was an increase in transmittance of more than 30% in both cases.
- Radiometer measurements outside transmittance measuring equipment are displayed in Figure 9: Graph) Intensity of UV Light in different Gaseous media
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
L'invention concerne un procédé pour améliorer la transmission des rayons ultraviolets émis par une lampe insérée dans un tube de quartz, utilisée dans un équipement de désinfection d'eau au moyen de la lumière UV. Ce procédé a pour objet de prévenir la détérioration des rayons ultraviolets lorsqu'ils traversent un milieu gazeux, en particulier l'air. Il en résulte une plus grande efficacité de l'équipement utilisé pour désinfecter, outre une réduction de la consommation d'énergie. Le procédé consiste en premier à enlever l'air contenu dans l'espace du tube de quartz qui entoure la lampe émettrice de rayons ultraviolets, puis à introduire un autre gaz.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CL2013000743A CL2013000743A1 (es) | 2013-03-19 | 2013-03-19 | Metodo para mejorar la transmision en un 5% o mas, de rayos ultravioletas en torno a una lampara de desinfeccion de cuarzo, que comprende la utilizacion de cualquier gas, diferente al aire ambiente, en el espacio interior del cuarzo que cubre la lampara uv. |
| CL743-2013 | 2013-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2014146211A2 true WO2014146211A2 (fr) | 2014-09-25 |
| WO2014146211A3 WO2014146211A3 (fr) | 2014-12-31 |
Family
ID=50548990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CL2014/000009 WO2014146211A2 (fr) | 2013-03-19 | 2014-03-14 | Amélioration de la transmittance de rayons ultraviolets dans des milieux gazeux |
Country Status (2)
| Country | Link |
|---|---|
| CL (1) | CL2013000743A1 (fr) |
| WO (1) | WO2014146211A2 (fr) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0275122A2 (fr) | 1987-01-16 | 1988-07-20 | Sumitomo Electric Industries Limited | Boîtier transparent aux rayons ultraviolets pour des circuits intégrés à semi-conducteurs |
| WO1998007064A1 (fr) | 1996-08-12 | 1998-02-19 | Toyota Jidosha Kabushiki Kaisha | Element grille de diffraction, selection des longueurs d'ondes lumimeuses au moyen de cet element, et systeme de transmission de signaux optiques |
| WO1998036324A1 (fr) | 1997-02-13 | 1998-08-20 | Mitsui Chemicals, Inc. | Membrane pelliculaire pour rayons ultraviolets et pellicule |
| EP1353199A1 (fr) | 2001-01-16 | 2003-10-15 | Japan Science and Technology Corporation | Fibre optique destinee a la transmission de rayons ultraviolets, sonde a fibre optique et procede de fabrication de la fibre optique et de la sonde a fibre optique |
| WO2004059694A1 (fr) | 2002-12-25 | 2004-07-15 | Zakrytoe Akzionernoe Obschestvo Nauchno-Proisvodstvenny Tsentr 'soliton-Ntt' | Source de rayons ultraviolets a decharges gazeuses |
| WO2008060465A1 (fr) | 2006-11-10 | 2008-05-22 | Advanced Micro Devices, Inc. | Pellicule euv avec transmission de lumière dans l'ultraviolet extrême (euv) améliorée |
| WO2008062923A1 (fr) | 2006-11-24 | 2008-05-29 | Green Environmental Technology Co., Ltd. | Matériel de traitement de l'eau équipé d'une lampe aux ultraviolets pulsés |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999036932A1 (fr) * | 1997-12-29 | 1999-07-22 | Povl Kass | Lampe, tube de lampe et procede de reglage de la lampe |
| DE102005017505A1 (de) * | 2005-04-15 | 2006-10-19 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Reflektor-Hochdruckentladungslampe |
| WO2007067654A2 (fr) * | 2005-12-07 | 2007-06-14 | Lightstream Technologies | Procede et appareil permettant de refroidir des lampes flash haute puissance |
| CN102354653B (zh) * | 2011-07-11 | 2014-03-12 | 芦建锋 | 提高套管式紫外灯185nm紫外线透过率的方法 |
-
2013
- 2013-03-19 CL CL2013000743A patent/CL2013000743A1/es unknown
-
2014
- 2014-03-14 WO PCT/CL2014/000009 patent/WO2014146211A2/fr active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0275122A2 (fr) | 1987-01-16 | 1988-07-20 | Sumitomo Electric Industries Limited | Boîtier transparent aux rayons ultraviolets pour des circuits intégrés à semi-conducteurs |
| WO1998007064A1 (fr) | 1996-08-12 | 1998-02-19 | Toyota Jidosha Kabushiki Kaisha | Element grille de diffraction, selection des longueurs d'ondes lumimeuses au moyen de cet element, et systeme de transmission de signaux optiques |
| WO1998036324A1 (fr) | 1997-02-13 | 1998-08-20 | Mitsui Chemicals, Inc. | Membrane pelliculaire pour rayons ultraviolets et pellicule |
| EP1353199A1 (fr) | 2001-01-16 | 2003-10-15 | Japan Science and Technology Corporation | Fibre optique destinee a la transmission de rayons ultraviolets, sonde a fibre optique et procede de fabrication de la fibre optique et de la sonde a fibre optique |
| WO2004059694A1 (fr) | 2002-12-25 | 2004-07-15 | Zakrytoe Akzionernoe Obschestvo Nauchno-Proisvodstvenny Tsentr 'soliton-Ntt' | Source de rayons ultraviolets a decharges gazeuses |
| WO2008060465A1 (fr) | 2006-11-10 | 2008-05-22 | Advanced Micro Devices, Inc. | Pellicule euv avec transmission de lumière dans l'ultraviolet extrême (euv) améliorée |
| WO2008062923A1 (fr) | 2006-11-24 | 2008-05-29 | Green Environmental Technology Co., Ltd. | Matériel de traitement de l'eau équipé d'une lampe aux ultraviolets pulsés |
Also Published As
| Publication number | Publication date |
|---|---|
| CL2013000743A1 (es) | 2013-10-04 |
| WO2014146211A3 (fr) | 2014-12-31 |
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