Alkali metal impurity pretreatment device

Abstract

The invention provides a pre-treatment device for alkali metal impurities, which includes: a distillation unit, used to distill the alkali metal containing impurities, so as to separate the impurities therein; an operation box, used to accommodate the distillation unit, and is the distillation unit A suitable operating environment is provided; a cooling unit is used to provide a cold source for the distillation unit, so that the alkali metal is changed from a gaseous state to a liquid or a solid state; desired atmosphere. The invention provides a heat source for the evaporation of alkali metals through a distillation unit, a cold source for the condensation of gaseous alkali metals through a cooling unit, and a safe and reliable external environment for the entire distillation process and subsequent treatment process of alkali metals through an operation box, greatly reducing The risk of contamination during the alkali metal distillation process is reduced, and the accuracy of impurity analysis is improved.

Description

technical field [0001] The invention relates to a device for separating alkali metal substrates during the analysis of alkali metal impurities, and more particularly, to a pretreatment device before the analysis of alkali metal impurities. Background technique [0002] As important chemical raw materials, alkali metals such as sodium, potassium, lithium, and sodium-potassium alloys are widely used in metallurgy, pharmaceuticals, plastics, petrochemicals, and nuclear industries. These materials are widely used as coolants for fast neutron reactors because of their high heat transfer coefficient, high boiling point, and low neutron absorption cross section. The presence of impurities in the above-mentioned alkali metals and alloys will affect their performance, especially the presence of impurities such as oxygen, carbon, and calcium in the alkali metals or alloys will affect the heat transfer performance of the material, and it will also affect the use of the above materials....

AI Technical Summary

Problems solved by technology

However, this method is cumbersome to operate, and there are potential safety hazards, especially when distilling radioactive alkali metals, radioactive waste liquid will be produced, and it is difficult to distill alkali metals (such as sodium potassium alloys) that are liquid at room temperature

In addition, the distillation operation is carried out in the air, which has great safety hazards and pollution risks

Images