WO2006103870A1 - 酸素同位体の濃縮方法及び濃縮装置 - Google Patents
酸素同位体の濃縮方法及び濃縮装置 Download PDFInfo
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- WO2006103870A1 WO2006103870A1 PCT/JP2006/304125 JP2006304125W WO2006103870A1 WO 2006103870 A1 WO2006103870 A1 WO 2006103870A1 JP 2006304125 W JP2006304125 W JP 2006304125W WO 2006103870 A1 WO2006103870 A1 WO 2006103870A1
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- ozone
- oxygen
- photolysis
- mixed gas
- isotope enrichment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/02—Separation by phase transition
- B01D59/04—Separation by phase transition by distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/34—Separation by photochemical methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/50—Separation involving two or more processes covered by different groups selected from groups B01D59/02, B01D59/10, B01D59/20, B01D59/22, B01D59/28, B01D59/34, B01D59/36, B01D59/38, B01D59/44
Definitions
- the present invention relates to a method for concentrating 17 o or 18 o rarely present as an oxygen stable isotope using ozone photolysis.
- the present invention also relates to a method for purifying 16 o with high purity by removing 17 o and 18 o by the method.
- FIG. 170 or 180 There is a method of concentrating 170 or 180, which is an oxygen isotope, using a photochemical reaction.
- This method oxygen is generated ozone Ozonaiza as a raw material, distilling the ozone is separated by, by irradiating the semiconductor laser to the separated ozone gas, a particular ozone isotopomer containing oxygen stable isotope 17 o or 18 o selectively degrade, is 17 o to the formed acid Motochu, is a method of concentrating a 18 o (see Patent Document 1).
- Patent Document 1 JP 2004-261776 A
- Patent Document 2 Japanese Patent Laid-Open No. 2005-040668
- the invention disclosed in Japanese Patent Application Laid-Open No. 2005-040668 is characterized by mixing at least one kind of rare gas and ozone among krypton, xenon, and radon.
- xenon and radon may react with oxygen to produce unstable compounds by silent discharge with an ozonizer or ultraviolet irradiation.
- Xenon and krypton are also used when separating undecomposed ozone and oxygen. Depending on the temperature, it may solidify and increase the ozone concentration.
- the pressure is low, for example, 13 kPa. (lOOTorr) It is preferable to use the following pressure! /
- the treatment is performed under a low pressure, there is a problem that the gas throughput is reduced in the subsequent distillation operation.
- the present invention has been made to solve the above problems, after dilution of the ozone gas, kept small ozone concentration under conditions that rare gas become solidified, the oxygen stable isotope 1
- the present invention irradiates a mixed gas of CF and ozone with light.
- a collection step for collecting the mixed gas containing CF
- Oxygen in the collected gas mixture was separated from undecomposed ozone and CF and separated.
- An oxygen isotope enrichment method comprising: an oxygen isotope enrichment step of concentrating the oxygen isotope in oxygen.
- the oxygen isotope enrichment step includes the coexistence of CF.
- an ozone generation step for generating ozone from raw material oxygen, and a gas containing ozone generated in the ozone generation step.
- the CF-ozone mixed gas containing CF and ozone is added.
- an ozone separation step for separating from unreacted raw material oxygen, and the CF-ozone mixed gas separated in the ozone separation step is preferably supplied to the ozone photolysis step.
- the ozone generation step includes helium and neon.
- an ozone detoxification step of decomposing ozone in the mixed gas separated in the step into oxygen after the oxygen isotope enrichment step, an ozone detoxification step of decomposing ozone in the mixed gas separated in the step into oxygen, and the ozone detoxification step A CF separation step for separating CF from the produced oxygen, and the CF separation
- a mixture gas containing undecomposed ozone and CF separated in the oxygen isotope enrichment step is provided between the oxygen isotope enrichment step and the ozone detoxification step. Irradiate light with a wavelength different from the light irradiated in the ozone photolysis step.
- the second ozone photolysis step for selectively decomposing ozone isotopomers different from the ozone decomposed in this ozone photolysis step into oxygen, and the oxygen generated in the second ozone photolysis step, undecomposed
- a second collection step for collecting a mixed gas containing ozone and CF;
- Oxygen in the mixed gas collected is separated from undecomposed ozone and CF, and separated acid
- the light irradiated in the ozone photolysis step is
- the light is near-infrared light in the wavelength range of 700 to l, 000 nm or visible light in the wavelength range of 450 to 850 nm! /.
- the wavelength power of light irradiated in the ozone photolysis step is in the range of 991.768 to 992.684nm.
- the oxygen isotope enrichment method it is preferable to adjust the absorption wavelength of ozone by applying an electric field when irradiating light in the ozone photolysis step.
- the ozone photolysis step is performed at a low temperature and a low pressure.
- the temperature for collecting the mixed gas is set to 160K or less in the collecting step, and the CF-ozone mixed gas is continuously liquidized.
- oxygen isotope contained in the O zone down decomposed by the ozone photodissociation step it is preferably at least one of 17 o and 18 o.
- the present invention irradiates light to a mixed gas of CF and ozone.
- the ozone photolysis means for selectively decomposing ozone isotopomers containing specific oxygen isotopes contained in the ozone into oxygen, and the oxygen generated by the photolysis of ozone into undecomposed ozone and CF And concentrating the oxygen isotope in the separated oxygen
- the oxygen isotope concentrating device is provided.
- the ozone photolysis reaction is stably carried out while the ozone concentration is kept low even under the condition that the rare gas is solidified, and it is efficient and continuous. 17 o and 18 o can be concentrated.
- the ozone generation step is performed by adding one or more rare gases of helium, neon, and argon to the raw material oxygen, oxygen can be diluted with these rare gases.
- oxygen can be diluted with these rare gases.
- the ozone detoxification step for decomposing ozone in the mixed gas separated in the step into oxygen, and the oxygen force CF generated in the ozone detoxification step are separated.
- CF When mixed with the ozone generated in the process and recycled, CF can be separated from the mixed gas obtained in the oxygen isotope enrichment process, and this CF can be reused in the ozone generation process.
- the ozone photolysis solution is added to a mixed gas containing undecomposed ozone and CF separated in the oxygen isotope enrichment step.
- 2 Oxygen generated in ozone photolysis process, undecomposed ozone and CF
- Oxygen isotope enrichment step ozone isotopomers containing different types of oxygen isotopes can be continuously photodegraded, and oxygen isotopes can be continuously enriched. It can concentrate more efficiently.
- the light intensity s irradiated in the ozone photolysis step is near infrared light in the wavelength range of 700 to 1,000 nm, particularly in the range of 991. 768 to 992. 684 nm. Or any one of visible light in the wavelength range of 450 to 850 nm, or when adjusting the absorption wavelength of ozone by applying an electric field when irradiating light in the ozone photolysis step.
- the isotopomer of ozone containing the body can be decomposed more efficiently and selectively into oxygen, and the oxygen isotope can be more efficiently concentrated.
- the ozone photolysis step When the ozone photolysis step is performed at a low temperature and a low pressure, the ozone isotopomer containing an oxygen isotope efficiently absorbs light, so that selective photolysis is promoted. In addition, natural decomposition into oxygen is suppressed, and oxygen isotopes can be concentrated more efficiently.
- the temperature for collecting the mixed gas is set to 160K or less, and CF-ozone
- the mixed gas produced in the ozone photolysis process can be collected more efficiently, and oxygen isotopes can be concentrated more efficiently.
- FIG. 1 is a schematic diagram showing a first embodiment of the oxygen stable isotope enrichment method of the present invention.
- FIG. 2 is a schematic view showing a second embodiment of the oxygen stable isotope enrichment method of the present invention.
- FIG. 3 is a schematic view showing a third embodiment of the oxygen stable isotope enrichment method of the present invention.
- FIG. 4 is a graph showing an absorption spectrum of ozone.
- FIG. 1 is a schematic diagram showing a first embodiment of the oxygen stable isotope enrichment method of the present invention.
- a CF ozone mixed gas is obtained before the oxygen stable isotope enrichment apparatus.
- the present embodiment has the following configuration.
- the raw material oxygen GO is silently discharged or the raw material oxygen GO is irradiated with a mercury lamp, etc. to generate ozone, and the raw material oxygen containing ozone generated in the ozone generating step 11 is converted into ozone.
- Ozone separation process that separates into OZ and raw material RO RO, ozone separated in ozone separation process 12 OZ has a specific wavelength in the presence of CF
- the ozone photolysis process 13 which selectively decomposes ozone containing specific oxygen isotopes in the molecule into oxygen, oxygen OC generated in the ozone photolysis process 13, undecomposed ozone, And collection process 31 that cools and collects mixed gas containing CF and CF,
- An oxygen isotope enrichment step 14 is provided for separating the generated oxygen OC from undecomposed ozone OZ and concentrating the oxygen isotope in the oxygen.
- the first route 15 for introducing raw material oxygen into the ozone generation step 11 and the ozone-containing oxygen generated in the ozone generation step 11 are introduced into the ozone separation step 12.
- the third route 17 for introducing at least one rare gas KG of helium, neon and argon, the ozone separation step to concentrate ozone 4th path 18 and Z or 5th path 19 for introducing CF for ozone dilution (referred to as CF in Figure 1) at least at one of the 12 appropriate positions
- the power for introducing the rare gas KG from the third path 17 is introduced from the ozone separation step 12 together with the raw material oxygen RO after separating ozone. To be derived. Also, CF introduced from the 4th path 18 and Z or the 5th path 19
- ozone can be easily generated by silently discharging oxygen as a raw material with a general ozonizer or irradiating oxygen with mercury lamp power.
- the oxygen used as a raw material is V containing nitrogen and other impurities as much as possible, and high-purity U is desirable, but if these impurities can be separated when ozone and oxygen are separated, an industrial product with a purity of about 99.5% Oxygen for use can also be used as raw material oxygen.
- the ozone mixed with CF is manufactured with another device, and this CF-ozone mixture is produced.
- the ozone generation step 11 and the ozone separation step 12 may be omitted, and only the ozone photolysis step 13 and the oxygen isotope enrichment step 14 may be used. .
- oxygen concentrating the 17 o and 18 o obtained by the concentration method of the present invention or other oxygen and concentrating the 17 o and 18 o by concentration method as a raw material oxygen.
- Oxygen, ozone, and CF can be separated by low-temperature distillation or by using an adsorbent such as silica gel.
- oxygen and CF-age are obtained by low-temperature distillation using a distillation column.
- the gas mixture from 4zones.
- the CF-ozone-raw material oxygen mixed gas cooled to a predetermined temperature by a heat exchanger is used for low-temperature distillation separation.
- oxygen is concentrated at the top of the tower, and ozone OZ and CF are concentrated at the bottom of the tower.
- the operation conditions of the distillation column at this time are arbitrary, if oxygen is mixed in the ozone photolysis step 13, the concentration of oxygen containing a specific oxygen isotope is reduced. Prefers to be as oxygen-free as possible.
- nitrogen, argon, or oxygen at an appropriate temperature can be used as a cold source to be supplied to a condenser, which is an additional device necessary for operation of the distillation column, and a heating source to be supplied to a reboiler.
- the CF-ozone mixture gas is irradiated with light of a specific wavelength, allowing it to enter the molecule.
- the ozone gas containing these various isotopomers is irradiated with light having a specific wavelength, whereby the specific isotopomer of ozone is decomposed to generate oxygen containing an oxygen isotope.
- FIG. 4 shows light absorption in 16 O ( 16 0 16 0 16 0) and 18 0 ( 18 0 18 0 18 0).
- the maximum peak of 3 3 3 is around wave number 10, 081 cm _ 1 (wavelength 991.965 nm), and the maximum peak of 18 0
- the peak is around a wave number of 10, 076 cm _1 (wavelength 992. 457 nm).
- 3 3 is the wave number 10, 073. 7cm _1 (wavelength 992. 684nm).
- the wavelength at which ozone isotopomers containing 17 o and 18 o can be decomposed most efficiently is between 10, 073 cm- 1 to 10, 083 cm _1 . It can be seen that ozone can be decomposed more selectively.
- a light source for obtaining light of such a wavelength sunlight spectroscopy, InGaAsP semiconductor laser or light emitting diode, AlGalnP semiconductor laser or light emitting diode, Ga AsSb semiconductor laser or light emitting diode, CdZnTe semiconductor A laser or light emitting diode, a CdZnSe semiconductor laser or light emitting diode, or a dye laser that can be optically pumped with a mercury lamp, YAG laser, Ar ion laser, Kr ion laser, or the like can be used.
- the pressure when irradiating light to ozone, it is preferable to set the pressure under a low pressure, for example, 13 kPa (100 Torr) or less, in order to lengthen the mean free path of ozone molecules and suppress molecular collisions as much as possible. As a result, it is possible to avoid an increase in light absorption width due to molecular collision.
- a photoreaction cell equipped with a specific light source can be used for the ozone photolysis step 13, and the cooling source used for cooling the photoreaction cell can be nitrogen, argon at an appropriate temperature. Or oxygen can be used.
- the system containing the photoreaction cell can be depressurized by installing a vacuum pump in an appropriate path downstream from the photoreaction cell, or by depressurizing with liquid nitrogen.
- the pressure and temperature at this time are within the range where ozone and CF do not liquefy or solidify.
- the photolysis reaction of ozone is a bimolecular ozone. This is a reaction that generates three molecules of oxygen, which is an exothermic reaction. For this reason, decomposed oxygen molecules may have large kinetic energy. When the ozone concentration is high, such oxygen molecules may collide with the ozone molecules and decompose them into oxygen.
- the oxygen produced by the decomposition of ozone molecules may contain the desired oxygen isotope.
- the probability is very low. Therefore, when oxygen molecules collide with ozone molecules, oxygen containing a desired oxygen isotope obtained by decomposition by irradiation with light L is diluted.
- the ozone OZ obtained by separation in the ozone separation step 12 is in a state of being mixed with CF and diluted. Oxygen with large kinetic energy
- Molecules collide with CF and dissipate kinetic energy.
- the probability of decomposing zon molecules can be lowered. Thereby, generation of oxygen including a desired oxygen isotope can be suppressed.
- Spontaneous decomposition caused by contact with the metal surface can also be suppressed. These effects can increase the oxygen isotope enrichment rate.
- CF has almost no effect on the photochemical reaction of ozone in the ozone photolysis step 13.
- Nisotopomer can be selectively degraded.
- Mixing of ozone and CF can be performed at any position in each process, and CF4 is added to each process.
- An appropriate amount may be added and mixed.
- an appropriate amount of CF is added to the ozone liquid phase to increase the ozone.
- the concentration can be prevented.
- the oxygen isotope enrichment in the next oxygen isotope enrichment step 14 is efficiently performed. Can be done.
- the collection of the mixed gas is preferably performed at a temperature at which the C F ozone mixed gas can be handled as a liquid at 160 K or less, more preferably 90 to 160 K.
- the improvement of power this time CF separation to separate oxygen containing ozone photodissociation step 13 obtained in Omicron 17 and Omicron 1 8 from undecomposed ozone ⁇
- CF is in the ozone separation process 12.
- Oxygen containing can be efficiently obtained at a high concentration.
- FIG. 2 is a schematic diagram showing a second embodiment related to the oxygen stable isotope enrichment method of the present invention.
- the same components as those shown in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the present embodiment has the following configuration.
- the raw material oxygen GO power also generates ozone, and the ozone generation process 11
- the ozone-raw material oxygen mixed gas derived from the ozone generation process 11 and the CF (referred to as CF in the figure) introduced from the fifth path 19 are recycled raw material oxygen RO and CF-ozone mixed gas.
- Light L1 of a specific wavelength is applied to the CF-ozone mixed gas OF derived from the ozone separation process 12.
- An ozone photolysis process 13 that irradiates and decomposes specific ozone into oxygen
- Cooling and collecting the mixed gas derived from ozone photolysis process 13 mixed gas containing oxygen, undecomposed ozone, and CF containing specific isotopes generated by decomposition of ozone
- Collecting step 31 The above mixed gas collected in the collecting step 31 is separated into oxygen OC1 containing a specific oxygen isotope and undecomposed ozone and CF-ozone mixed gas OF 1 consisting of CF and a specific acid.
- the mixed gas derived from the second ozone photolysis step 21 oxygen containing specific isotopes generated by decomposition of ozone, undecomposed ozone, and CF-containing mixed gas
- a second oxygen isotope enrichment step 22 in which the specific oxygen isotope is separated into OF2, and the specific oxygen isotope is enriched in oxygen OC2 containing the specific oxygen isotope,
- CF—ozone mixed gas OF2 contains ozone decomposed into oxygen and CF—oxygen mixed gas
- the raw material oxygen GO supplied from the first path 15 is used in the ozone generation step 11, for example,
- a part of the ozone is converted to ozone by silent discharge in the ozonizer to become ozone-raw material oxygen mixed gas, which is introduced into the ozone separation step 12.
- ozone separation step 12 it is preferable to separate oxygen and CF ozone mixed gas by low-temperature distillation using a distillation column.
- the oxygen separated in the upper part of the tower becomes the circulating raw material oxygen RO, which
- CF is concentrated on the ozone OZ side in the ozone separation process 12. . For this reason, CF does not enter the circulating raw material oxygen RO side.
- the isotopomer of specific ozone in the ozone is selectively decomposed by the light L1, and oxygen is generated as shown in the reaction formulas (1) and (2).
- the photoreaction cell equipped with a specific light source is cooled, and the temperature in the system including the photoreaction cell is set to 100. It is preferable to set the pressure to ⁇ 250K and the pressure to 13 kPa or less. The pressure and temperature at this time are within the range where ozone and CF are not liquid or solidified.
- the mixed gas produced in the ozone photolysis step 13 is continuously captured at a temperature of 160 K or less, more preferably 90 to 160 K in the subsequent collection step 31. Can be collected.
- Ozone photolysis step 13 contains oxygen decomposed from ozone, CF, and undecomposed ozone
- the mixed gas is separated into oxygen OC1 and CF-ozone mixed gas OF 1 containing undecomposed ozone and CF by separation operation in oxygen isotope enrichment step 14, for example, low-temperature distillation.
- oxygen containing a desired oxygen isotope is concentrated as oxygen OC1.
- oxygen isotope enrichment step 14 a method similar to the method in the ozone separation step 12 can be applied.
- the second ozone light component is added to the CF-ozone mixed gas OF 1 separated in the oxygen isotope enrichment step 14.
- an isotopomer different from the ozone isotopomer decomposed in the ozone photolysis step 13 can be selectively decomposed into oxygen.
- the CF-ozone-oxygen mixed gas obtained in the second ozone photolysis step 21 is the same as that of the second oxygen.
- the desired oxygen isotope is contained by the separation operation in the ligand concentration step 22, for example, by low-temperature distillation.
- CF ozone mixture of oxygen-enriched oxygen OC2 and undecomposed ozone and CF
- the separation conditions in the second oxygen isotope enrichment step 22 the same conditions as those in the ozone separation step 12 and the oxygen isotope enrichment step 14 can be applied, and details thereof are omitted. However, since it is not necessary to strictly control the mixing of oxygen in the ozone detoxification step 23 in the next step, when applying low-temperature distillation using a distillation column, the operating conditions of the distillation column can be increased. good.
- the CF-ozone mixed gas OF2 obtained in the second oxygen isotope enrichment step 22 is harmless to ozone.
- the CF-oxygen mixed gas OF3 obtained in the ozone detoxification step 23 is used for
- CF recovery process 24 low-temperature distillation or adsorption separation using a distillation tower is applied.
- glass fluorine resin (polytetrafluoroethylene), etc., for which it is preferable to select materials that are not reactive or catalytic to ozone.
- the CF is introduced into the fifth path 19 and circulated into the ozone separation process 12.
- the second path 16 through which the CF-ozone-source oxygen mixed gas derived from the ozone generation step 11 passes is connected to the second path 16.
- CF supplied to the ozone photolysis step 13 is added from the fourth path 18 together with the ozone separated in the ozone separation step 12, or ozone separation is performed.
- step 12 At least one of helium, neon, and argon is used.
- the ability to add seed rare gases This fourth path 18 can be omitted.
- helium, neon, and / or argon introduced from the fourth path 18 is derived from the ozone separation step 12 together with the circulating raw material oxygen RO, and circulates in the seventh path 26.
- the amount of these rare gases introduced from the fourth path 18 should be enough to make up for the shortage.
- FIG. 3 is a schematic view showing a third embodiment related to the oxygen isotope enrichment method of the present invention.
- a rare gas KG which is at least one of sulfur, neon, and argon, is introduced from the eighth path 35. Also, from the fifth path 19, CF is circulated as in the second embodiment.
- the oxygen isotope enrichment step 14 includes at least oxygen generated by decomposing ozone, undecomposed ozone, CF circulating in the system, helium, neon, and argon.
- This rare gas KG is separated from high-boiling ozone and CF by the separation operation in the oxygen isotope enrichment step 14, for example, low-temperature distillation.
- oxygen OC1 containing a specific oxygen isotope is obtained in a state diluted with a rare gas KG that is at least one of helium, neon, and argon.
- Oxygen OC1, diluted with the rare gas KG in this way is easier to adjust the flow rate than a small amount of high-purity oxygen, and handling is improved.
- the second oxygen isotope enrichment step 2 is the same as the oxygen isotope enrichment step 14 described above.
- a path may be provided in front of 2, and a rare gas that is at least one of helium, neon, and argon may be introduced.
- CF is used as a gas for diluting ozone.
- 1 and 180 can be separated and concentrated efficiently and continuously from the mixed gas obtained in ( 1 ). Further, according to the present invention, 16 o can be purified with high purity by separating and concentrating these isotopes.
- Oxygen isotopes 170 and 180 are widely used as tracers in the fields of chemistry and medicine. However, while there is a great demand in these industries, it is necessary to separate and concentrate these isotopes with a very small abundance ratio in the natural world.
- the present invention provides a method and apparatus for separating and concentrating these rare oxygen isotopes 17 o and 18 o efficiently and with high purity, and is excellent in terms of cost.
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CN2006800099190A CN101151088B (zh) | 2005-03-28 | 2006-03-03 | 氧同位素的浓缩方法及浓缩装置 |
EP06715208.2A EP1867383B1 (en) | 2005-03-28 | 2006-03-03 | Method of concentrating oxygen isotope and concentration apparatus |
US11/887,096 US20090045043A1 (en) | 2005-03-28 | 2006-03-03 | Method and apparatus for concentrating oxygen isotopes |
IL186296A IL186296A0 (en) | 2005-03-28 | 2007-09-25 | Method of concentrating oxygen isotope and concentration apparatus |
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JP2005093067A JP4699784B2 (ja) | 2005-03-28 | 2005-03-28 | 酸素同位体の濃縮方法及び濃縮装置 |
JP2005-093067 | 2005-03-28 |
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EP (1) | EP1867383B1 (ja) |
JP (1) | JP4699784B2 (ja) |
CN (1) | CN101151088B (ja) |
IL (1) | IL186296A0 (ja) |
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JP4771992B2 (ja) * | 2007-05-31 | 2011-09-14 | 大陽日酸株式会社 | 酸素同位体の濃縮装置および濃縮方法 |
JP5425483B2 (ja) * | 2008-01-31 | 2014-02-26 | 大陽日酸株式会社 | オゾンを安全に取扱うためのプロセス制御方法 |
JP5436790B2 (ja) * | 2008-03-26 | 2014-03-05 | 大陽日酸株式会社 | 酸素同位体の濃縮方法 |
JP5415105B2 (ja) * | 2009-02-26 | 2014-02-12 | 大陽日酸株式会社 | 酸素同位体の濃縮装置および濃縮方法 |
JP5254078B2 (ja) * | 2009-02-26 | 2013-08-07 | 大陽日酸株式会社 | オゾン混合物の分解排出方法および分解排出装置 |
JP5632770B2 (ja) | 2011-02-23 | 2014-11-26 | 大陽日酸株式会社 | 光化学反応装置、及び光化学反応装置を用いた同位体濃縮方法 |
RU2486948C1 (ru) * | 2012-02-16 | 2013-07-10 | Виталий Леонидович Бондаренко | Установка для концентрирования неоногелиевой смеси |
JP6172684B2 (ja) * | 2015-01-20 | 2017-08-02 | 大陽日酸株式会社 | 酸素同位体濃縮方法 |
JP7161391B2 (ja) * | 2018-12-07 | 2022-10-26 | 大陽日酸株式会社 | 酸素含有化合物の製造方法、及びその製造装置 |
CN110420567B (zh) * | 2019-07-12 | 2022-04-22 | 中国工程物理研究院材料研究所 | 一种石墨烯疏水膜的制备方法及膜蒸馏的应用方法 |
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US3400024A (en) * | 1955-09-15 | 1968-09-03 | Air Reduction | Inhibiting ozone decomposition with sf6, ccl2f2 or cf4 |
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US4029558A (en) * | 1976-10-22 | 1977-06-14 | The United States Of America As Represented By The United States Energy Research And Development Administration | Isotope enrichment by frequency-tripled temperature tuned neodymium laser photolysis of formaldehyde |
US4437958A (en) * | 1978-01-11 | 1984-03-20 | The United States Of America As Represented By The United States Department Of Energy | Device and method for separating oxygen isotopes |
WO2000027509A1 (fr) * | 1998-11-09 | 2000-05-18 | Nippon Sanso Corporation | Procede et dispositif d'enrichissement en composant lourd d'isotopes d'oxygene |
JP4327287B2 (ja) * | 1999-01-29 | 2009-09-09 | 大陽日酸株式会社 | 重酸素水の製造方法および装置 |
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2006
- 2006-03-03 WO PCT/JP2006/304125 patent/WO2006103870A1/ja active Application Filing
- 2006-03-03 CN CN2006800099190A patent/CN101151088B/zh not_active Expired - Fee Related
- 2006-03-03 RU RU2007135880/12A patent/RU2388525C2/ru active
- 2006-03-03 US US11/887,096 patent/US20090045043A1/en not_active Abandoned
- 2006-03-03 EP EP06715208.2A patent/EP1867383B1/en not_active Not-in-force
-
2007
- 2007-09-25 IL IL186296A patent/IL186296A0/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04300633A (ja) * | 1991-03-28 | 1992-10-23 | Nisshinbo Ind Inc | 炭素13のレーザー濃縮法 |
JP2005040668A (ja) * | 2003-07-24 | 2005-02-17 | Taiyo Nippon Sanso Corp | 酸素同位体の濃縮方法及び装置 |
Non-Patent Citations (1)
Title |
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See also references of EP1867383A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN101151088B (zh) | 2011-03-30 |
EP1867383B1 (en) | 2020-01-15 |
CN101151088A (zh) | 2008-03-26 |
RU2388525C2 (ru) | 2010-05-10 |
JP4699784B2 (ja) | 2011-06-15 |
EP1867383A4 (en) | 2008-09-03 |
EP1867383A1 (en) | 2007-12-19 |
JP2006272090A (ja) | 2006-10-12 |
US20090045043A1 (en) | 2009-02-19 |
RU2007135880A (ru) | 2009-04-10 |
IL186296A0 (en) | 2008-01-20 |
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