Environment-friendly device for preparing heavy water and overweight water mixed liquid by evaporating light water and structure thereof

Abstract

Heavy water is an important basis for nuclear power industry, medical treatment and the like, but an existing heavy water extraction technology consumes much energy, is extremely high in cost and is very complex; overweight water generated by nuclear power stations is increased gradually, particularly nuclear wastewater generated by the first nuclear power station of the Fukushima island in Japan contains a large amount of radioactive substances such as tritium, strontium 90, cobalt 16, iodine 129, carbon 14 and technetium 99, the treatment cost is high, Japan government decides that the nuclear wastewater is discharged into the Pacific Ocean in two years on April 13, 2021, and the ecological environment of the Pacific Ocean and the ecological environment of the whole ocean are seriously influenced. The invention provides an environment-friendly device for preparing heavy water and overweight water mixed liquid by evaporating light water and a structure of the environment-friendly device, water 5 wets a water guide strip 3 and an evaporation layer 1 through gravity flow and capillarity, absorbs external heat and evaporates on the surface of the evaporation layer 1, the difference that the light water is easier to evaporate in specific gravity and overweight water, the saturated vapor pressure is small is utilized, light water in the discharged water 5 is evaporated, a heavy water and overweight water mixed solution with a certain concentration is extracted, and meanwhile the surrounding environment and objects are cooled.

Description

technical field [0001] The invention relates to the technical field of producing heavy water, in particular to the technical field of producing heavy water and super heavy water by evaporating light water. Background technique [0002] The existing technology of producing heavy water and super-heavy water by evaporating light water uses the boiling point of light water (molecular formula H2O, molecular weight 18.0153) is 100 ℃, heavy water (molecular formula D2O, molecular weight 20.0275) boiling point is 101.42 ℃, tritium water in super-heavy water under one atmospheric pressure (Molecular formula T2O) The boiling point is a small difference of 104°C. Distilling natural water, 99.73% of light water in natural water is evaporated by controlling the evaporation temperature, and the raffinate contains more heavy water, super heavy water, and semi-heavy water (molecular formula HDO), heavy oxygen water, oxygen-18 water, extremely heavy water, etc. and other substances (hereinaf...

AI Technical Summary

Problems solved by technology

[0003] 1. It requires a lot of energy consumption, high production costs and increased carbon emissions;

[0004] 2. In the process of heating, evaporating and vaporizing, a large amount of heat generated is transferred to the external environment, aggravating global warming;

[0005] 3. The equipment requires high precision, the process is very complicated, and the control is difficult

[0006] In today's energy shortage in the world, heavy water is an important foundation for the nuclear power industry and medical treatment. However, the extraction of heavy water consumes a lot of energy, the cost is extremely high, and the technology is very complicated, which seriously restricts the development of the nuclear power industry and certain medical technologies. At the same time, nuclear power plants The production of superheavy water (especially superheavy water containing radioactive element tritium) is increasing, seriously affecting the ecological environment of the earth, and there is an urgent need for low-cost superheavy water separation technology

In particular, the nuclear wastewater of the Fukushima Daiichi Nuclear Power Plant in Japan not only contains tritium, but also a large amount of radioactive substances such as strontium 90, cobalt 16, iodine 129, carbon 14, technetium 99, etc. The half-life of these elements is very long, and it is easier to It is absorbed by marine organisms and seabed mud, so it is more likely to be enriched in fish and other bodies, and enter human food; but due to the high cost of processing, the Japanese government decided to discharge it two years later on April 13, 2021 The Pacific Ocean will seriously affect the ecological environment of the Pacific Ocean and the entire ocean

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