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A sealed type molten salt distillation method and a distillation device

A distillation device, a closed technology, applied in the direction of boiler/distillate distillation, etc., 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: 2017-05-10
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A sealed type molten salt distillation method and a distillation device

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Embodiment Construction

[0052] A preferred embodiment is given below to illustrate the present invention more clearly and completely in conjunction with the accompanying drawings.

[0053] In the description of the present invention, it should 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 device or The element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0054] figure 1 A distillation apparatus is shown. The distillation apparatus includes a still 1 in which a closed cavity is formed. The left end of the closed cav...

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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 closed method for distilling molten salt and a distillation device. Background technique [0002] Molten salt is a melt composed of metal cations and non-metal anions. Common ones 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 electrolytic extraction of metals and as a molten salt reactor in the nuclear industry. Fuel solvents and heat transfer media. [0003] The distillation of molten salt uses the difference in volatility between carrier salt and fission products and corrosion products to realize the recovery of carrier molten salt and the removal of impurities. Because the temperature required to evaporate molten salt is very high (generally 800°C to 1200°C), and the vapor pres...

Claims

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Application Information

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Patent Type & Authority Applications(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
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