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Method and distillation device for closed-type distillation of molten salt

A distillation device and closed technology, applied in boiler/distillate distillation and other directions, can solve the problems of easy pollution, high material loss, low recovery rate of molten salt, etc., to improve product recovery rate, avoid pollution and corrosion, overcome The effect of low recovery

Active Publication Date: 2019-04-19
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the traditional molten salt distillation method in the prior art in order to overcome the low recovery rate of molten salt, product dispersion, large material loss, easy pollution and corrosion vacuum system, etc. Defects, provide a method and distillation device for closed distillation of molten salt

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  • Method and distillation device for closed-type distillation of molten salt

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Embodiment Construction

[0052] A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.

[0053] In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

[0054] figure 1A distillation device is shown, and the distillation device includes a distillation pot 1 , and a closed cavity is form...

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Abstract

A sealed type molten salt distillation method and a distillation device are disclosed. The method is implemented through the distillation device. The distillation device includes a distillation kettle. A sealed cavity is formed in the distillation kettle. The left side end of the sealed cavity is an evaporation zone, and the top and bottom of the right side end of the sealed cavity are a condensing zone and a collecting zone respectively. The vapour pressure of molten salt increases along with the increase of temperature, a large vapour pressure gradient can be formed through heating and cooling different parts of the vacuum distillation kettle under a sealed condition so as to drive molten salt distillation. Disadvantages of the prior art that recovery rates are low and products are scattered are overcome. Pollution and corrosion of a vacuum system by the molten slat are effectively avoided. The product recovery rate is increased.

Description

technical field [0001] The invention relates to a method and a distillation device for closed distillation of molten salt. Background technique [0002] Molten salt is a molten body composed of metal cations and non-metal anions. Common are alkali metal or alkaline earth metal halides, silicates, carbonates, nitrates and phosphates. Molten salt has good high temperature stability, low vapor pressure, low viscosity, good electrical conductivity, and high heat capacity in a wide temperature range. It can be used as an electrolyte for electrowinning metals and as a molten salt reactor in the nuclear industry. fuel solvent and heat transfer medium, etc. [0003] The distillation of molten salt is to use the volatility difference between the carrier salt and fission products and corrosion products to realize the recovery of the carrier molten salt and the removal of impurities. Due to the high temperature required to evaporate the molten salt (generally 800°C to 1200°C), and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/02
Inventor 杨洋窦强付海英王子豪耿俊霞李晴暖
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI