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Oxygen isotope enrichment method

A technology of oxygen isotope and concentration, applied in the separation of different isotopic elements, separation methods, chemical instruments and methods, etc., can solve the problems of complex nitric oxide processing and so on

Inactive Publication Date: 2016-09-07
NIPPON SANSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, there is a problem that the handling of nitric oxide as a raw material becomes complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0036] figure 1 It is a figure which schematically shows the schematic structure of the oxygen isotope enrichment apparatus used when carrying out the oxygen isotope enrichment method of 1st Embodiment of this invention.

[0037] First, refer to figure 1 , the oxygen isotope enrichment device 10 used when performing the oxygen isotope enrichment method of the first embodiment will be described.

[0038]The oxygen isotope enrichment device 10 of the first embodiment has a first distillation device 11, a second distillation device 12, a hydrogenation unit 14, a water splitting unit 15, a chemical exchange tower 16, a dehydration unit 17, an oxygen return path 18, and a water return path 19 and water supply path 20.

[0039] The first distillation unit 11 is the oxygen (O 2 ) is used as a device for distillation as a raw material, which has a first distillation column group 21, a first condenser 23, a first evaporator 24, a second condenser 26, a second evaporator 27, a third ...

no. 2 approach

[0114] figure 2 It is a figure which schematically shows the schematic structure of the oxygen isotope enrichment apparatus used when carrying out the oxygen isotope enrichment method of 2nd Embodiment of this invention. exist figure 2 in, right and figure 1 The same structural parts of the oxygen isotope enrichment apparatus 10 of the first embodiment shown are denoted by the same symbols.

[0115] First, refer to figure 2 , the oxygen isotope enrichment device 100 used when performing the oxygen isotope enrichment method of the second embodiment will be described.

[0116] Regarding the oxygen isotope enrichment apparatus 100 of the second embodiment, a first distillation apparatus 101 is provided instead of the first distillation apparatus 11 provided in the oxygen isotope enrichment apparatus 10 of the first embodiment, and constituent oxygen isotopes are removed from structural elements. The concentration device 10 is the same as the oxygen isotope enrichment devic...

Embodiment

[0152] (Example)

[0153] In the example, using figure 1 The oxygen isotope enrichment device 10 shown in the first embodiment concentrates the oxygen isotope ( 18 O and 17 O).

[0154] In the examples, nitric oxide (N 17 O) contained in 17 The O content is set to 10atom% or more, and the nitric oxide (N 18 O) contained in 18 The O content is set to 98 atom % or more.

[0155] In order to obtain nitric oxide (N 17 O), assuming that five tons of concentrated hydrogenated 17 O water, the process of constructing the enrichment method of oxygen isotopes.

[0156] Next, the method of enriching the oxygen isotope of the example will be described.

[0157] First, oxygen as a raw material is supplied to the first distillation column 21A (supply amount: 5500 Nm 3 / h), and use the first distillation column group 21 formed by connecting the first to third distillation columns 21A, 21B, and 21C in series to distill oxygen as a raw material to concentrate the oxygen isotope ( 1...

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Abstract

An object of the present invention is to provide a method for concentrating oxygen isotopes that is capable of using a small amount of liquid without regularly replenishing a large amount of nitric oxide as a raw material when distilling a large amount of nitric oxide as a raw material. NO tower storage capacity to concentrate oxygen isotopes without reducing the separation efficiency of oxygen isotopes. Oxygen isotopes are obtained by chemically exchanging water obtained by adding hydrogen to oxygen in which the oxygen isotopes generated by the first distillation unit (11) are roughly concentrated and nitric oxide discharged from the second distillation unit (12). Nitric oxide with increased concentration and water with decreased oxygen isotope concentration are supplied to the second distillation device (12) with increased oxygen isotope concentration of nitric oxide, and oxygen obtained by electrolyzing the water with decreased oxygen isotope concentration is refluxed into the first distillation unit (11).

Description

technical field [0001] The present invention relates to a method for concentrating oxygen isotopes capable of concentrating a large amount of specific oxygen isotopes by distilling nitric oxide in a small amount without periodically replenishing a large amount of nitric oxide as a raw material. The storage capacity of the liquid NO tower can be used to concentrate the oxygen isotope without reducing the separation efficiency of the oxygen isotope. [0002] this application claims priority based on Japanese Patent Application No. 2012-230766 for which it applied to Japan on October 18, 2012, and uses the content here. Background technique [0003] In the past, as the oxygen isotope ( 17 O or 18 (O) is concentrated using the distillation method using nitric oxide (NO) as a raw material (hereinafter referred to as "NO distillation method") described in Non-Patent Document 1, distilling water (H 2 O) Distillation method (hereinafter referred to as "water distillation method")...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D59/04B01D3/14C01B13/02H01M8/0662
CPCB01D3/143B01D59/04B01D59/32B01D59/50C01B5/00C01B21/24H01M8/0662Y02E60/50B01D3/14C01B5/02C01B13/02F25J3/02F25J3/08H01M8/04156Y02E60/32
Inventor 神边贵史林田茂五十岚健大
Owner NIPPON SANSO CORP
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