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Method for producing deuterium-depleted water, method for separating heavy water and light water, and method for producing deuterium-enriched water

A technology of manufacturing method and separation method, applied in the field of deuterium-depleted water, can solve the problems of high manufacturing cost and large economic burden

Inactive Publication Date: 2017-08-18
SHINSHU UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the conventional method of producing deuterium-depleted water, large-scale equipment and repetition of complicated operations were required, and the production cost was high.
Therefore, it becomes a big financial burden for cancer patients and those who wish to drink in anticipation of various effects

Method used

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  • Method for producing deuterium-depleted water, method for separating heavy water and light water, and method for producing deuterium-enriched water
  • Method for producing deuterium-depleted water, method for separating heavy water and light water, and method for producing deuterium-enriched water
  • Method for producing deuterium-depleted water, method for separating heavy water and light water, and method for producing deuterium-enriched water

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Experimental program
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Effect test

no. 1 approach

[0061] The first embodiment is characterized in that activated carbon is prepared, and water vapor is supplied under a pressure at which heavy water and semi-heavy water are adsorbed but light water is hardly adsorbed.

[0062] The separation device used in the first embodiment includes a gasification device 1 for supplying water as water vapor.

[0063] A pipe extending from the vaporizer 1 is connected to the adsorption tank 2 .

[0064] An adsorbent made of activated carbon is disposed inside the adsorption tank 2 .

[0065] On the downstream side of the adsorption tank 2, a liquefaction device 3 for converting water vapor into water is provided.

[0066] A stop valve 4 is installed in the middle of the piping connecting the adsorption tank 2 and the liquefaction device 3 .

[0067] The piping connecting the adsorption tank 2 and the liquefaction device 3 is branched in the middle, and water vapor can be discharged through the stop valve 5 .

[0068] exist figure 2 In ...

no. 2 approach

[0081] The second embodiment is characterized in that activated carbon having sufficiently adsorbed water vapor is prepared, and the ambient air pressure is maintained at a pressure at which light water desorbs and heavy water and semi-heavy water hardly desorb.

[0082] In the second embodiment, in the same manner as in the first embodiment, the figure 2 separation device.

[0083] In the second embodiment, first, water is vaporized in the gasification device 1, and supplied to the adsorption tank 2, for example, at 25° C. at a pressure of 20 Torr or more, so that the water vapor is sufficiently adsorbed on the adsorbent, and then, when When lowering to 13 Torr, a large amount of light water is released. Then, the shut-off valve 4 is opened, and the water vapor detached by the liquefaction device 3 is recovered into water for recovery, so that deuterium-depleted water with reduced deuterium concentration can be obtained.

[0084] figure 1 The inclination of the adsorption...

no. 3 approach

[0087] The third embodiment is characterized in that the detachment process of the second embodiment is repeated.

[0088] The separation device of the third embodiment has a gasification device 14 for supplying water as water vapor.

[0089] A pipe extending from the vaporizer 14 is connected to the adsorption tank 15 .

[0090] A stop valve 22 is provided in the middle of this piping.

[0091] An adsorbent made of activated carbon is arranged inside the adsorption tank 15 .

[0092] The adsorption tank 15 is connected to the first gas tank 16 by a predetermined pipe, and a pump 17 is disposed in the pipe. Water vapor can be reciprocated between the adsorption tank 15 and the first gas tank 16 by the pump 17 .

[0093] In addition, shutoff valves 23 and 24 are respectively provided on the pipes extending downstream from the adsorption tank 15 and the first gas tank 16 , and are merged into one downstream of the pipes to be connected to the second gas tank 18 .

[0094] In...

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Abstract

Through the present invention, deuterium-depleted water is produced easily and inexpensively. A method for removing heavy water and semi-heavy water from water and producing deuterium-depleted water, wherein the method has an adsorption step for supplying water vapor to a predetermined adsorbent at a pressure at which the heavy water and semi-heavy water are adsorbed on the adsorbent and light water is not readily adsorbed, causing the heavy water and semi-heavy water to be adsorbed, and recovering the water vapor not adsorbed on the adsorbent. The method also has a desorption step for maintaining the vapor pressure of the periphery of the predetermined adsorbent on which the water vapor is adsorbed in a range in which heavy water and semi-heavy water are not readily desorbed, and recovering the water vapor desorbed from the adsorbent.

Description

technical field [0001] The present invention relates to a method for producing deuterium-depleted water in which the amount of heavy water or semi-heavy water is reduced from general water. [0002] In addition, the present invention relates to a method for separating heavy water and semi-heavy water from light water and a method for producing deuterium-enriched water containing a lot of heavy water and semi-heavy water. Background technique [0003] H is mixed with ordinary water 2 O (light water) and D 2 O (heavy water), DHO (semi-heavy water), D 2 O (heavy water), DHO (semi-heavy water) are water molecules containing deuterium atoms which are isotopes of hydrogen atoms. The concentration of heavy water and semi-heavy water contained in water existing in nature varies depending on the place where it is collected, but it is about 150 ppm in flat land, and most of it is semi-heavy water. [0004] The amount of heavy water and semi-heavy water contained in the human body ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B5/02B01D53/047B01D59/26
CPCB01D53/047B01D59/26C01B5/02B01D53/0476B01D2253/102B01D2253/108B01D2257/80B01J20/20C01B5/00
Inventor 金子克美高城寿雄村田克之
Owner SHINSHU UNIVERSITY
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