Treatment method of sodium tetrachloroaluminate

A kind of technology of sodium tetrachloroaluminate and treatment method, applied in the field of sodium-salt battery

Inactive Publication Date: 2020-11-13
浙江安力能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the domestic sodium tetrachloroaluminate treatment only has the patent number CN201510697507.1, which treats sodium tetrachloroaluminate into

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0026] Harmless treatment of solid waste containing sodium tetrachloroaluminate produced in the production process of sodium tetrachloroaluminate:

[0027] The solid waste containing sodium tetrachloroaluminate generated during the production of sodium tetrachloroaluminate is crushed to increase the specific surface area, thereby increasing the speed of the harmless treatment of sodium tetrachloroaluminate;

[0028] Add a certain amount (water: sodium tetrachloroaluminate = 2.5:1 weight ratio) of hot water at 80°C for reaction;

[0029] After the reaction is over, add alkali metal hydroxide or sodium bicarbonate to neutralize, and adjust the pH to 8;

[0030] Finally, the treated material (what substance) is transferred to the wastewater sedimentation tank, and the flocculation characteristics of polyaluminum chloride are used to accelerate the sedimentation of other materials in the sedimentation tank.

Embodiment approach 2

[0032] Harmless treatment of solid waste containing sodium tetrachloroaluminate in sodium salt batteries:

[0033] Crush the solid waste containing sodium tetrachloroaluminate in the sodium salt battery to increase the specific surface area, thereby increasing the speed of the harmless treatment of sodium tetrachloroaluminate

[0034] Add a certain amount (water: sodium tetrachloroaluminate = 4:1 weight ratio) of hot water with a temperature of 100°C for reaction;

[0035] After the reaction, add alkali metal hydroxide or sodium bicarbonate to neutralize, and adjust the pH to 9;

[0036] Filter the processed materials and wash with water to separate nickel and other substances in the sodium salt battery;

[0037] Finally, the filtered materials and the washing residue are transferred to the wastewater sedimentation tank, and the flocculation characteristics of polyaluminum chloride are used to accelerate the sedimentation of other substances in the sedimentation tank.

Embodiment approach 3

[0039] Harmless treatment of sodium tetrachloroaluminate that has absorbed moisture and deteriorated or is contaminated

[0040] Sodium tetrachloroaluminate that has absorbed moisture and deteriorated or is contaminated is broken to increase the specific surface area, thereby increasing the speed of the harmless treatment of sodium tetrachloroaluminate

[0041] Add a certain amount (water: sodium tetrachloroaluminate = 5:1 weight ratio) of hot water with a temperature of 90°C for reaction;

[0042] After the reaction is over, add alkali metal hydroxide or sodium bicarbonate to neutralize, and adjust the pH to 8;

[0043] Finally, the filtered materials and the washing residue are transferred to the wastewater sedimentation tank, and the flocculation characteristics of polyaluminum chloride are used to accelerate the sedimentation of other substances in the sedimentation tank.

[0044] The sodium tetrachloroaluminate processed in the embodiment of the present invention are respectively s...

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Abstract

The invention relates to a treatment method of sodium tetrachloroaluminate. The treatment method is characterized by comprising the following steps: 1) crushing sodium tetrachloroaluminate blocky crystals; 2) adding a certain amount of hot water, and carrying out a reaction at a temperature of 50-100 DEG C, 3) after the reaction is finished, adding an alkali metal hydroxide or sodium bicarbonate to neutralize HCl, and 4) transferring the harmless substance obtained in the step 3) into a wastewater sedimentation tank. The product treated by the treatment method of sodium tetrachloroaluminate isharmless and environmentally friendly.

Description

Technical field [0001] The invention relates to the field of sodium salt batteries, in particular to a processing method of sodium tetrachloroaluminate electrolyte. Background technique [0002] Sodium tetrachloroaluminate can be used as a sodium salt battery electrolyte, and it can also be used as a catalyst in organic chemical industry. It is also a by-product of the pharmaceutical industry. Therefore, sodium tetrachloroaluminate has a wide range of uses. The production of sodium tetrachloroaluminate generally adopts two methods at present: (1) The aluminum is melted at high temperature, and then chlorine gas is introduced to generate aluminum trichloride vapor, and then the vapor is introduced into the sodium chloride container to let it After the contact reaction, after cooling the product, it is heated and melted again, and the excess sodium chloride (containing sodium tetrachloroaluminate harmful solid waste) is filtered out to obtain sodium tetrachloroaluminate; (2) The al...

Claims

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Application Information

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IPC IPC(8): A62D3/20C02F1/52A62D101/49
CPCA62D3/20A62D2101/49C02F1/5245
Inventor 李伟伟杨贞胜汪秀仁石再军张洪涛
Owner 浙江安力能源有限公司
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