Title:
OXYGEN ISOTOPE CONCENTRATION METHOD AND OXYGEN ISOTOPE CONCENTRATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/021950
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an oxygen isotope concentration method and an oxygen isotope concentration apparatus, whereby it becomes possible to feed ozone safely and stably without the need to increase the size of an apparatus. Provided is an oxygen isotope concentration method comprising: a photoreaction step for irradiating a first mixed fluid (F1) prepared by mixing ozone with a diluent substance (DS) with a laser beam to selectively decompose ozone containing an oxygen isotope and thereby generate oxygen containing an oxygen isotope, thereby producing a second mixed fluid (F2) containing oxygen, ozone and the diluent substance (DS) in a mixed state; a liquid reservoir part introduction step for introducing the second mixed fluid (F2) to a liquid reservoir part (10) to liquefy the second mixed fluid (F2); and a separation step for introducing the liquefied second mixed fluid (F2) to a separation column (21) by the action of a liquid head pressure generated by liquefying the second mixed fluid (F2) and storing the liquefied second mixed fluid (F2) in the liquid reservoir part (10) to distill the liquefied second mixed fluid (F2), thereby separating the liquefied second mixed fluid (F2) into a third mixed fluid (F3) which contains ozone and the diluent substance (DS) in a mixed state and a product oxygen (PO) in which a heavy oxygen isotope component is concentrated. In the method, the liquid reservoir part (10) can store the liquefied second mixed fluid (F2) without being affected by heat input.
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Inventors:
IGARASHI TAKEHIRO (JP)
KIHARA HITOSHI (JP)
KAMBE TAKASHI (JP)
KIHARA HITOSHI (JP)
KAMBE TAKASHI (JP)
Application Number:
PCT/JP2022/028944
Publication Date:
February 23, 2023
Filing Date:
July 27, 2022
Export Citation:
Assignee:
TAIYO NIPPON SANSO CORP (JP)
International Classes:
B01D59/34; B01D59/04; C01B13/10
Foreign References:
| JP2010194495A | 2010-09-09 | |||
| JP2011224426A | 2011-11-10 | |||
| JP2020089865A | 2020-06-11 | |||
| JP2011161383A | 2011-08-25 | |||
| JP2010194496A | 2010-09-09 | |||
| JP2005040668A | 2005-02-17 | |||
| JP5620705B2 | 2014-11-05 | |||
| JP5620705B2 | 2014-11-05 |
Other References:
TAKAAKI MIZUTANI: "Minimum ignition energy of Ozone/Oxygen mixed gas", OCCUPATIONAL SAFETY AND HEALTH RESEARCH, vol. 2, no. 1, 2009, pages 45 - 48
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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