Chemical drying water removal method

Abstract

The invention provides a chemical drying water removal method. The method comprises the steps of firstly, putting matter which is used as a drying agent and has a high reaction with water into a container containing a dried object, secondly, vacuumizing the container, or putting dry high-purity inert gas into the container, or vacuumizing the container, and then putting the drying gas into the container for blowing, and removing residual drying agents and by-reactant. According to the method, the drying effect on solid materials is greatly improved, the effect of better removing the water is obtained, drying can be more thoroughly carried out, the higher requirement of some industries for the drying effect can be met, and especially, the production bottleneck, generated by the quite high water requirement, of industries, like a lithium-ion electric industry, can be broken through.

Description

technical field [0001] The invention relates to the field of drying, in particular to a method for chemical drying and water removal of solid materials. Background technique [0002] At present, in the field of drying, the drying of solids is mostly carried out by heating, decompression and freezing. The more common methods are ovens, vacuum ovens, etc., among which vacuum ovens have better drying effects. The application process of the vacuum oven is to place the dry material in a closed drying room, and heat the material to be dried while vacuuming with a vacuum system, so that the moisture inside the material diffuses to the surface through the pressure difference or concentration difference, and the water molecules in the material The surface obtains sufficient kinetic energy, and after overcoming the mutual attraction between molecules, it escapes to the low-pressure space of the vacuum chamber, and is thus sucked away by the vacuum system. During the vacuum drying pro...

AI Technical Summary

Problems solved by technology

Therefore, if you do not enter the liquid injection workshop immediately, the water content will become higher due to the absorption of moisture in the air, which is far from the requirement that the water content of the lithium battery electrolyte is less than 30ppm, which will greatly affect the performance of the battery.