Title:
STABLE ISOTOPE ENRICHMENT DEVICE AND STABLE ISOTOPE ENRICHMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2022/138162
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a device and method that are for enrichment of stable isotopes, that enable reduction in the emission amount of toxic and flammable substances, or substances having an environmental impact in the atmosphere, and that enable reduction in the amount of materials used. The present invention provides a stable isotope enrichment device comprising: a distillation column group including a plurality of distillation columns connected in a cascade; a material feed line (30) that feeds materials to a first distillation column (1); a product extraction line (31) that extracts a product from another distillation column located on the secondary side of the first distillation column (1); an isotope-depleted fluid withdrawal line (32) through which an isotope-depleted gas or isotope-depleted liquid is withdrawn from the first distillation column (1) or another distillation column located on the primary side of the first distillation column (1); an isotope exchange reactor (22) that regenerates the isotope-depleted gas or isotope-depleted liquid to form an isotope-regenerated gas or isotope-regenerated liquid, by subjecting the isotope-depleted gas or isotope-depleted liquid to an isotope exchange reaction so as to cause the concentration of stable isotope molecules in the isotope-depleted gas or isotope-depleted liquid to approach the natural abundance ratio; and an isotope-regenerated fluid feedback line (33) that feeds the isotope-regenerated gas or isotope-regenerated liquid back to the first distillation column (1).
Inventors:
SAKURAI HAYATO (JP)
KAMBE TAKASHI (JP)
KAMBE TAKASHI (JP)
Application Number:
PCT/JP2021/045097
Publication Date:
June 30, 2022
Filing Date:
December 08, 2021
Export Citation:
Assignee:
TAIYO NIPPON SANSO CORP (JP)
International Classes:
B01D59/04; C01B21/24; C07C17/383; C07C19/08
Domestic Patent References:
| WO2000027509A1 | 2000-05-18 |
Foreign References:
| JP2019513556A | 2019-05-30 | |||
| JP2018164884A | 2018-10-25 | |||
| CN201493052U | 2010-06-02 | |||
| JP4327287B2 | 2009-09-09 | |||
| JP2018164884A | 2018-10-25 | |||
| JP4309162B2 | 2009-08-05 |
Other References:
SHOHEI ISOMURAYASUHIKO TONOOKAHAYATO KAETSU: "Separation of Nitrogen and Oxygen Isotopes by Nitric Oxide Low Temperature Distillation", JAPAN RADIOISOTOPE ASSOCIATION, vol. 36, no. 2, 15 February 1987 (1987-02-15), pages 57 - 63
"Gas Diorama 2020", 2020, GAS REVIEW CO., LTD, pages: 88
"Gas Diorama 2020", 2020, GAS REVIEW CO., LTD, pages: 88
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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