Method and equipment for preparing deuterium depleted water by light water

Abstract

The invention relates to a method and equipment for preparing deuterium depleted water by light water, the method is characterized in that light water is performed with deionization treatment, then light water and an electrolyte potassium hydroxide are mixed at low temperature with mixing proportion of 5-8%, after potassium hydroxide is fully dissolved, 5-8% of potassium hydroxide-containing light water (the electrolyte) is sent to a diaphragm-free capacity-reduction electrolytic tank, so that oxygen and protium are generated, and then deuterium depleted water is synthesized through catalysis. The catalyst used by the synthesis reaction is a palladium catalyst, the outlet pressure of a synthesis reactor is controlled at 0.01-0.02Mpa, the flow speed of gas mixture of oxygen and protium through a nozzle is 30-35 meters / second, the granularity of quartz sand is 0.8-1.6mm, and the thickness of a flame retardant layer of the synthesis reactor is 5-7 times than that of the inner diameter of the synthesis reactor. The equipment employed by water electrolysis is the box-type low temperature diaphragm-free capacity-reduction electrolytic tank, and employs a plurality of electrolytic pools. The method and equipment for preparing deuterium depleted water by light water have the beneficial effects that the method is safe and reliable, the technology is simple, the equipment cost is low, and the market prospect is good.

Description

technical field [0001] The invention relates to a method and equipment for preparing ultra-light water from light water, and belongs to the technical field of nuclear applications. Background technique [0002] As we all know, water in nature is generally composed of 2 hydrogen atoms and 1 oxygen atom (H 2 O), but the hydrogen atom has three isotopes with different masses, the mass of 1 is hydrogen (H): the mass of 2 is deuterium (D); the mass of 3 is super-heavy hydrogen (T). The water composed of hydrogen (H) with a mass number of 1 combined with oxygen is called light water, and the water with heavy hydrogen and super-heavy hydrogen with mass numbers of 2 and 3 combined with oxygen is called heavy water and super-heavy water, respectively. In natural water, the content of deuterium is about 150ppm. [0003] Domestic and foreign studies have shown that the presence of deuterium (heavy hydrogen) in water is harmful to the survival, development and reproduction of living o...

AI Technical Summary

Problems solved by technology

Since industrial hydrogen production is a diaphragm electrolyzer, the optimal separation coefficient of deuterium and protium in the electrolysis process is not considered, and the structure of the electrolyzer, electrodes and working conditions of the electrolyzer are not fully considered, which is not conducive to the separation of hydrogen isotopes. The separation coefficient of protium and deuterium in the electrolytic cell is small, so the content of deuterium in the synthesized ultra-light water can only be above 50PPm

The synthesis reactor uses a fuel cell. Although the technology is advanced, the equipment is complicated, the cost is high, and the investment is large. It is still difficult to industrialize

The use of solar desalination technology for electrolytic water is environmentally friendly but increases the difficulty of water treatment and requires a large investment in equipment

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