A method for preparing high-purity deuterium gas by heavy water electrolysis
A high-purity, deuterium technology, applied in electrolysis components, electrolysis processes, chemical instruments and methods, etc., can solve the problems of large waste of raw materials, high purification costs, and high HD content, and achieve reduced waste, high purity, and convenient expansion. Effect
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Embodiment 1
[0037] (1) choose D 2 Heavy water with an O (deuterium oxide) content of 99.8% is used as a raw material, and the heavy water is heated and degassed to reduce the dissolved N in the heavy water 2 , O 2 , CO 2 and other impurity gases to reduce the pressure of the purification process. When performing the heating and degassing operation, the heating temperature is 100° C., and the heating time is 5 minutes.
[0038] (2) The degassed heavy water is electrolyzed, and the electrolyte mass concentration added to the heavy water is 100g / L. The electrolyte is sodium carbonate that does not contain H element, and the purity is superior grade. To prevent the electrolyte from containing moisture, the electrolyte needs to be heated at 180°C for 3 hours to dry it before use.
[0039] After electrolysis of heavy water, deuterium gas and oxygen gas are obtained respectively, and the oxygen gas is evacuated at this time.
[0040] (3) The obtained deuterium gas is dried and dehydrated. ...
Embodiment 2
[0049] (1) choose D 2 Heavy water with an O (deuterium oxide) content of 99.9% is used as a raw material, and the heavy water is heated and degassed to reduce the dissolved N in the heavy water. 2 , O 2 , CO 2 and other impurity gases to reduce the pressure of the purification process. When performing the heating and degassing operation, the heating temperature is 60° C., and the heating time is 3 minutes.
[0050](2) The degassed heavy water is electrolyzed, and the electrolyte mass concentration added to the heavy water is 10g / L. Potassium carbonate without H element is selected as the electrolyte, and the purity is superior pure. To prevent the electrolyte from containing moisture, the electrolyte needs to be heated at 180°C for 4 hours to dry it before use.
[0051] After electrolysis of heavy water, deuterium gas and oxygen gas are obtained respectively, and the oxygen gas is evacuated at this time.
[0052] (3) The obtained deuterium gas is dried and dehydrated. T...
Embodiment 3
[0061] (1) choose D 2 Heavy water with an O (deuterium oxide) content of 99.9% is used as a raw material, and the heavy water is heated and degassed to reduce the dissolved N in the heavy water. 2 , O 2 , CO 2 and other impurity gases to reduce the pressure of the purification process. When performing the heating and degassing operation, the heating temperature is 80° C., and the heating time is 4 minutes.
[0062] (2) The degassed heavy water is electrolyzed, and the electrolyte mass concentration added to the heavy water is 80g / L. The electrolyte is sodium deuterium oxide that does not contain H elements, and the purity is superior. To prevent the electrolyte from containing moisture, the electrolyte needs to be heated at 180°C for 3 hours to dry it before use.
[0063] After electrolysis of heavy water, deuterium gas and oxygen gas are obtained respectively, and the oxygen gas is evacuated at this time.
[0064] (3) The obtained deuterium gas is dried and dehydrated. ...
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