Chemical drying water removal method

A drying and chemical technology, applied in the direction of drying solid materials, drying solid materials without heating, drying, etc., can solve problems such as battery performance impact and hazards, achieve breakthroughs in production bottlenecks, remove moisture, and improve drying effects

Active Publication Date: 2014-06-04
VIGOR GAS PURIFICATION TECHNOLOGIES (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1, Take the battery core drying application in the lithium battery industry as an example

[0020] In the container with the battery cells, pass in the trimethylindium at least one equivalent of the total water content of all the battery cells through the accurate sampling system. The trimethylindium volatilizes and quickly contacts the surface and gaps of the dried battery cells. Water molecules react. The reaction principle is that trimethyl indium reacts with water to generate methane gas, indium oxide or indium hydroxide and transition products.

[0021] Pass the desiccant trimethyl indium and let it stand for a period of time until the trimethyl indium reacts with the water in the battery cell to be dried completely.

[0022] Then vacuum for 10 minutes or purge with dry high-purity inert gas to remove excess substances and by-products.

[0023] According to the Karl Fischer Coulometer test, the moisture content of the battery core dried by this method is basically ...

Example Embodiment

[0024] Example 2, Take the drying application of transformer insulation fiber in the electrical industry as an example

[0025] In the container with the battery core, pass in the trimethylaluminum equivalent of at least 1 times the total water content of all the insulating fibers through the precise sampling system. The trimethylaluminum volatilizes and quickly interacts with the surface and the gap of the dried insulating fiber. Water molecules react. The reaction principle is that trimethyl aluminum reacts with water to generate methane gas, aluminum oxide or aluminum hydroxide and transition products.

[0026] After passing in the desiccant trimethylaluminum, let it stand for a period of time until the trimethylaluminum reacts completely with the water of the dried insulating fiber. Then vacuum for more than 20 minutes, or purge with dry high-purity inert gas to remove excess materials and by-products.

[0027] Tested by Karl Fischer Coulometer, the moisture content of the insul...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): F26B5/16F26B5/04
Inventor 张德龙
Owner VIGOR GAS PURIFICATION TECHNOLOGIES (SUZHOU) CO LTD
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