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Deuterium preparation method

A gas phase and catalytic reactor technology, applied in the field of chemistry and chemical engineering, can solve the problems of high energy consumption and low deuterium purity, and achieve the effects of reducing energy consumption, simplifying the process flow, and high purity

Active Publication Date: 2019-06-25
陈逸翔 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods consume a lot of energy in the preparation process, and the purity of the deuterium produced is not high, and it needs to be separated and concentrated to obtain raw material grade deuterium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation method of deuterium, completes successively according to following steps:

[0019] (1) get the residual liquid 100Kg that the deuterium-containing heavy water concentration is 11% after electrolysis;

[0020] (2) Remove SO in the residual liquid with a permeable membrane method 4 2- , Fe 3+ 、Na + , Cl - and other impurities, detected by ICP, the impurity content is less than 10 -6 g / L;

[0021] (3) The water after the impurity removal is sent into a stainless steel kettle with a capacity of 2 tons, a pressure resistance of 4 atmospheres, and a high temperature resistance of 403K, and is heated to become a superheated steam with a pressure of 1.5 atmospheres and a temperature of 403.15K;

[0022] (4) 17.8Kg of superheated steam is introduced into a stainless steel batch reactor with a diameter of 200cm and a length of 800cm through a pressure control and flow control valve. The pressure resistance of the reactor is 3 atmospheres, and the react...

Embodiment 2

[0028] (1) get remaining deuterium-containing heavy water 100Kg after being distilled by tap water;

[0029] (2) Remove Mg in heavy water by osmotic membrane method 2+ , Ca 2+ 、Na + , Fe 3+ , SO 4 2- , Cl - and other impurities, detected by ICP, the impurity content in heavy water is less than 10 -6 g / L, the content of deuterium is 5%;

[0030] (3) The heavy water after the impurity removal is sent into a stainless steel kettle with a capacity of 2 tons, a pressure resistance of 4 atmospheres, and a high temperature resistance of 403K, and is heated to become a superheated steam with a pressure of 1.5 atmospheres and a temperature of 403.15K;

[0031] Subsequent steps are all the same as steps (4) to (8) described in Example 1, and the collected gas component hydrogen and liquid component deuterium are combined to obtain a content of 99.9% hydrogen 13.5Kg and a content of 85% deuterium 0.213Kg.

Embodiment 3

[0033] (1) Take 1000Kg of seawater;

[0034] (2) Remove Na in seawater by osmotic membrane method + , Mg 2+ , Ca 2+ 、K + , Fe 3+ 、Ni 2+ , Mn 2+ , Cl - 、Br - , I - , SO 4 2- and other impurities, detected by ICP, the impurity content in heavy water is less than 10 -6 g / L, the content of deuterium is 0.0148%;

[0035] (3) Send the seawater after removing impurities into a stainless steel kettle with a capacity of 2 tons, a pressure resistance of 4 atmospheres, and a high temperature resistance of 403K, and be heated to become a superheated steam with a pressure of 1.5 atmospheres and a temperature of 403.15K;

[0036] Subsequent steps are all the same as steps (4) to (8) described in Example 1, and the collected gas component hydrogen and liquid component deuterium are combined to obtain a total content of 99.99% hydrogen 138Kg and a content of 84% deuterium 0.0203 Kg.

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Abstract

The invention discloses a deuterium preparation method, which sequentially comprises the following steps that 1, heavy water is subjected to impurity removal until the impurity is smaller than 10<-6>g / L; 2, the heavy water is pressurized and heated in a pressure kettle to become superheated water vapor being 1.5 atmospheric pressures and 403.15K; 3, the superheated water vapor and high-purity methane are simultaneously conveyed into a catalytic reactor; the mol ratio of the superheated water vapor to the high-purity methane is 3:1; the temperature in the reactor is controlled to be 1145 to 1155K, and the pressure is controlled to be 1.8 to 2.2 atmospheric pressure; the state is maintained for 30 to 40 minutes; 4, mixed gas is guided into a container; the temperature is lowered to 375.15K,and the pressure is lowered to 1.2 atmospheric pressures; 5, purification is performed through a purification tower; 6, the mixed gas is cyclically compressed into mixed liquid with the temperature being 19.8K; 7, the mixed liquid is fractionated; the temperature in a fractionating tower is maintained to be 21.5K; a gas ingredient of hydrogen and a liquid ingredient of deuterium are collected. The deuterium preparation method has the advantages that the energy source consumption of deuterium preparation is greatly reduced; the purity of obtained deuterium is high.

Description

technical field [0001] The invention belongs to the technical field of chemistry and chemical engineering, and relates to a method for preparing deuterium. Background technique [0002] Deuterium is an important scientific research material and an important raw material for new energy nuclear fusion. It widely exists in natural water, but its content is very small. According to data, the content of deuterium in natural water is only 0.0125% to 0.0145%. Deuterium, therefore, is not easy to obtain in high concentrations. At present, there are two ways to produce deuterium, one is to enrich natural water, concentrate through distillation to obtain deuterium-containing heavy water, and then obtain deuterium by electrolysis of heavy water; the other is through the "water-hydrogen sulfide exchange method" , that is, the GS method enriches the deuterium-containing aqueous solution, and then obtains deuterium by electrolysis of the aqueous solution. These two methods consume a lot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B4/00C01B3/38C01B3/50B01D59/04
Inventor 陈逸翔陈丽华赵勇
Owner 陈逸翔
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