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Method for producing O18 water and deuterium deficient water

A technology of deuterium-depleted water and raw water, applied in chemical instruments and methods, water, heavy water, etc., can solve problems such as the inability to achieve deuterium content below 50 ppm, light components are not paid attention to, and achieve the effect of improving economic benefits

Active Publication Date: 2008-10-29
JIANGSU HUAYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] During the production process of oxygen 18 water, the enrichment of oxygen 18 water and deuterium at the bottom of the tower is mainly concentrated, but no attention has been paid to the light components at the tower head, so the deuterium content in the light component content is about 100ppm, which cannot reach the existing level. The requirement that the deuterium content in mainstream deuterium-depleted water products be less than 50ppm

Method used

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  • Method for producing O18 water and deuterium deficient water
  • Method for producing O18 water and deuterium deficient water
  • Method for producing O18 water and deuterium deficient water

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Effect test

Embodiment 1

[0035] The rectification tower is manufactured by Changshu Kehui Bioengineering Co., Ltd. The material used is a stainless steel tower body, and the filler is copper mesh with surface oxidation treatment, the same below. The feed rate is 120Kg / h, the deuterium concentration is 150ppm, and the oxygen 18 concentration is 0.198%. The head pressure of tower 1 is controlled to be 75mmHg, the bottom pressure of the tower is 230mmHg, the average temperature in the tower is 56°C, the liquid phase flow rate in the rectification section is 600Kg / h, and the gas phase flow rate in the rectification section is 719.994Kg / h. The liquid phase flow rate in the column of the stripping section is 720Kg / h, and the gas phase flow rate is 719.994Kg / h. The feeding position is the 9th plate (from top to bottom), and the pressure at the head of the second tower is 75mmHg, the bottom pressure is 230mmHg, the average temperature in the tower is 57°C, and the liquid phase flow rate in the stripping secti...

Embodiment 2

[0037] The feed rate is 30Kg / h, wherein the concentration of deuterium is 150ppm, and the concentration of oxygen 18 is 0.198%. The head pressure of tower 1 is controlled to be 75mmHg, the bottom pressure of the tower is 230mmHg, the average temperature in the tower is 56°C, the liquid phase flow rate in the rectification section is 690Kg / h, and the gas phase flow rate in the rectification section is 719.994Kg / h. The liquid phase flow rate in the column of the stripping section is 720Kg / h, and the gas phase flow rate is 719.994Kg / h. The feeding position is the 37th plate (from top to bottom), and the pressure at the head of the second column is controlled to be 75mmHg, the pressure at the bottom of the column is 230mmHg, the average temperature in the column is 57°C, and the liquid phase flow rate in the stripping section is 600Kg / h. The gas phase flow rate is 599.994Kg / h. Control the pressure at the head of the 3rd column to be 75mmHg, the pressure at the bottom of the colum...

Embodiment 3

[0039]The feed rate is 28.8Kg / h, the deuterium concentration is 150ppm, and the oxygen 18 concentration is 0.198%. The head pressure of tower 1 is controlled to be 75mmHg, the bottom pressure of the tower is 230mmHg, the average temperature in the tower is 56°C, the liquid phase flow rate in the rectification section is 691.2Kg / h, and the gas phase flow rate in the rectification section is 719.994Kg / h. The liquid phase flow rate in the column of the stripping section is 720Kg / h, and the gas phase flow rate is 719.994Kg / h. The feeding position is the 39th plate (from top to bottom), the pressure at the head of the second tower is 75mmHg, the bottom pressure is 230mmHg, the average temperature in the tower is 57°C, and the liquid flow rate in the stripping section is 600Kg / h. The gas phase flow rate is 599.994Kg / h. Control the pressure at the head of the 3rd column to be 75mmHg, the pressure at the bottom of the column to be 235mmHg, the average temperature in the column to be ...

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Abstract

The invention relates to a method for simultaneously producing oxygen 18 water and poor deuterium oxide, which adopts a cascade distillation tower with 3600 pieces of tower tray levels to distill natural water, wherein, raw water is fed in the 39th-80th tower tray level (being counted from top to bottom), the feed rate is 20-80kg / h, an operating parameter is seen in table 1, the poor deuterium oxide produced on the tower top has a deuterium content of no higher than 50ppm, and the oxygen 18 water produced at the tower bottom has a oxygen 18 content of no less than 97.36 percent. The method of the invention utilizes a device used for producing the oxygen 18, which not only produces the oxygen 18 water without reducing yield, but also simultaneously produces the poor deuterium oxide with a yield of 120kg / h, thus greatly improving economic benefits.

Description

technical field [0001] The present invention relates to the production method of oxygen 18 water and deuterium-depleted water. Background technique [0002] Oxygen-18 is a stable isotope of oxygen. Oxygen-18 is a basic material for tracing human physiological processes. It is mainly used in the study of drug metabolism, energy metabolism, and the synthesis of imaging agent precursors for PET (Positron Emission Tomography), etc. aspect. [0003] As we all know, water in nature is generally composed of 2 hydrogen atoms and 1 oxygen atom, but hydrogen atoms have 3 isotopes, hydrogen with atomic weights of 1, 2, and 3, heavy light (deuterium), super heavy hydrogen (tritium) . The content of deuterium in natural water is about 150ppm. Studies at home and abroad have shown that deuterium is harmful to the survival, development and reproduction of living organisms. Living organisms have no resistance to deuterium. Once it enters the living body, it is difficult to metabolize it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B5/00C01B5/02
Inventor 徐志红余兆钧
Owner JIANGSU HUAYI TECH
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