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Method for preparing vanadium battery electrolyte by using waste vanadium catalyst

A technology for electrolyte and vanadium battery, which is applied in the field of using waste vanadium catalyst to prepare vanadium battery electrolyte, which can solve the problems of vanadium battery electrolyte polluting the environment, and achieve the effect of low processing cost and simple process flow

Active Publication Date: 2018-11-23
HUNAN SANFENG VANADIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing vanadium battery electrolyte by using waste vanadium catalyst, so as to solve the problem of environmental pollution caused by the existing waste vanadium catalyst treatment process and vanadium battery electrolyte

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of method utilizing waste vanadium catalyst of the present invention to prepare vanadium battery electrolyte, it comprises the following steps:

[0024] Step A: Soak the spent vanadium catalyst in oxalic acid solution for 2-8 hours to generate a solution containing vanadyl oxalate; wherein, the mass concentration of the oxalic acid solution is 20-50%, and the oxalic acid solution is oxalic acid dissolved in water at 50-100°C Forming.

[0025] Step B: Clean the spent vanadium catalyst, collect the vanadyl oxalate solution, rinse the soaked spent vanadium catalyst with water for 1-5 times, and rinse the remaining vanadyl oxalate, the recovery rate of vanadium can reach 97%-99%, The clear water rinse solution can be used as water for the next soak.

[0026] Step C: adding polyester to the vanadyl oxalate solution, after fully reacting, filtering to remove impurities, concentrating the filtrate to obtain the vanadyl oxalate mother liquor; wherein, further adding was...

Embodiment 2

[0029] In the present embodiment, the method for preparing vanadium battery electrolyte by using waste vanadium catalyst comprises the following steps:

[0030] Step A: Soak the spent vanadium catalyst in oxalic acid solution for 8 hours to generate a solution containing vanadyl oxalate; wherein, the mass concentration of the oxalic acid solution is 50%, and the oxalic acid solution is formed by dissolving oxalic acid in water at 100°C.

[0031] Step B: Clean the spent vanadium catalyst, collect the vanadyl oxalate solution, rinse the soaked spent vanadium catalyst with water for 1-5 times, and rinse the remaining vanadyl oxalate, the recovery rate of vanadium can reach 97%-99%, The clear water rinse solution can be used as water for the next soak.

[0032] Step C: Add polyester to the vanadyl oxalate solution, after fully reacting, filter to remove impurities, concentrate the filtrate to obtain the vanadyl oxalate mother liquor; further add waste vanadium catalyst to the vana...

Embodiment 3

[0035] In the present embodiment, the method for preparing vanadium battery electrolyte by using waste vanadium catalyst comprises the following steps:

[0036] Step A: Soak the spent vanadium catalyst in oxalic acid solution for 4 hours to generate a solution containing vanadyl oxalate; wherein, the mass concentration of the oxalic acid solution is 25%, and the oxalic acid solution is formed by dissolving oxalic acid in water at 80°C.

[0037] Step B: Clean the spent vanadium catalyst, and collect the vanadyl oxalate solution, rinse the soaked spent vanadium catalyst with clean water 3 times, and rinse the residual vanadium oxalate, the recovery rate of vanadium can reach 97%-99%, and put the clean water The rinse solution can be used as water for the next soak.

[0038] Step C: Add polyacid ester to the vanadyl oxalate solution, after fully reacting, filter to remove impurities, concentrate the filtrate to obtain the vanadyl oxalate mother liquor; further add waste vanadium ...

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Abstract

The invention discloses a method for preparing a vanadium battery electrolyte by using a waste vanadium catalyst. The method for preparing the vanadium battery electrolyte by using the waste vanadiumcatalyst comprises the following steps of, step A soaking the waste vanadium catalyst in an oxalic acid solution for 2 to 8 hours to generate an solution containing vanadyl oxalate; step B cleaning the waste vanadium catalyst and collecting the vanadium oxalate solution; and step C adding polyesterate into the vanadium oxalate solution, filtering to remove impurities after fully reacting, and concentrating the filtrated solution to obtain vanadium oxalate mother solution. According to the method for preparing the vanadium battery electrolyte by using the waste vanadium catalyst, no environmental pollution waste is generated in the process of process treatment, and the electrolyte for preparing a vanadium battery can be generated from the solution in the process of treating the waste vanadium catalyst. The process flow of the method is simple and the processing cost is low.

Description

technical field [0001] The invention relates to the technical field of vanadium battery electrolyte preparation, in particular to a method for preparing vanadium battery electrolyte by utilizing waste vanadium catalyst. Background technique [0002] At present, in the manufacture of sulfuric acid, chemical fertilizers, coal gas, natural gas, petrochemical and other industries, a large amount of vanadium catalysts are required to catalyze, desulfurize, denitrify, and decarbonize. The vanadium catalyst used in the whole year is between 22,000 tons and 25,000 tons, and it is increasing year by year. However, in the process of using the vanadium catalyst, the original vanadium catalyst is made of vanadium pentoxide (V 2 0 5 ) made. During the process of using the vanadium catalyst, the pentavalent vanadium is gradually converted into tetravalent vanadium. In order to meet the technical requirements of the catalytic reaction of the device, it is necessary to frequently switch ...

Claims

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Application Information

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IPC IPC(8): H01M8/18
CPCH01M8/188Y02E60/50
Inventor 许小弟田兴江
Owner HUNAN SANFENG VANADIUM IND CO LTD