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Method for preparing high-purity vanadyl sulfate solution with assistance of microbubbles

A technology of vanadyl sulfate solution and vanadyl sulfate, applied in chemical instruments and methods, vanadium compounds, inorganic chemistry, etc., can solve problems such as complex process, waste water generation, unfavorable clean production of vanadyl sulfate solution, etc., and achieve simple process steps , The effect of easy operation of the process steps

Active Publication Date: 2022-08-05
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method can prepare high-purity vanadyl sulfate solution without reducing agent, but the process is too complicated, and waste water is generated in the precipitation separation process, which is not conducive to the clean production of vanadyl sulfate solution

Method used

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  • Method for preparing high-purity vanadyl sulfate solution with assistance of microbubbles
  • Method for preparing high-purity vanadyl sulfate solution with assistance of microbubbles
  • Method for preparing high-purity vanadyl sulfate solution with assistance of microbubbles

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Experimental program
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Effect test

Embodiment 1

[0043] This embodiment provides a method of micro -foam assistance to prepare high -pure sulfuric acid oxygenic solution, which includes the following steps:

[0044] (1) Mixing 1.6mol five oxidation two -钒 钒 and 5mol sulfuric acid with a mass score of 60 % concentrated sulfuric acid, mixed at room temperature (25 ° C) and stirred 0.6h to make pulp;

[0045] (2) The oxalic acid solution and the hybridic acid solution and the pulp with a mixed concentration of 0.6 mol / L are 1: 1.1 with the oxalic acid Murbal and the reaction of 1.5h at 90 ° C.

[0046] (3) The aeration head with a pore diameter of 0.6 μm is used to pass the air micro -foam in the coarse sulfate oxygate solution, and the aeration reaction is 1h at 50 ° C to obtain a high -pure sulfate oxygenic solution.

Embodiment 2

[0048] This embodiment provides a method of micro -foam assistance to prepare high -pure sulfuric acid oxygenic solution, which includes the following steps:

[0049] (1) Mixed 2.6mol five oxidation two -钒 钒 and 8mol sulfuric acid with a mass score of 70 % concentrated sulfuric acid, mixed at room temperature (25 ° C) and stirred 0.7h to make pulp;

[0050] (2) The oxalic acid solution and the hybridic acid solution and the pulp with a mixed concentration of 0.9 mol / L. The five oxidation and the oxalic acid Murbi ratio is 1: 1.05, and the reaction of 80 ° C is 1h to obtain a coarse sulfuric acid solution;

[0051] (3) The aeration head with a pore diameter of 0.7 μm is used to pass the air micro -foam in the coarse sulfate oxygate solution, and the aeration reaction is 0.8h at 60 ° C.

Embodiment 3

[0053] This embodiment provides a method of micro -foam assistance to prepare high -pure sulfuric acid oxygenic solution, which includes the following steps:

[0054] (1) Mixed 2.3mol five oxidation two -钒 钒 and 7mol sulfuric acid with a mass score of 90 % concentrated sulfuric acid. Mix it at room temperature (20 ° C) and stir for 1h to make a slurry;

[0055] (2) The oxalic acid solution and the hybridic acid solution and the pulp with a mixed concentration of 0.9 mol / L are 1: 1.2 with the oxalic acid Murbal, and the reaction of 80 ° C is 2h.

[0056] (3) The aeration head with a pore diameter of 0.9 μm is used to pass the air micro -bubbles into the coarse sulfate oxygate solution, and the aeration reaction is 0.8h at 60 ° C.

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Abstract

The invention provides a microbubble-assisted method for preparing a high-purity vanadyl sulfate solution, which comprises the following steps: (1) mixing vanadium pentoxide and concentrated sulfuric acid to prepare slurry; (2) mixing an oxalic acid solution and the slurry, and reacting under a first heating condition to obtain a crude vanadyl sulfate solution; and (3) introducing microbubbles into the crude vanadyl sulfate solution, and carrying out aeration reaction under a second heating condition to obtain the high-purity vanadyl sulfate solution. The method disclosed by the invention is simple and easy to implement, and the residual oxalic acid in the solution can be decomposed under the condition that other chemical reagents are not added, so that the high-purity vanadyl sulfate solution product is obtained.

Description

Technical field [0001] The present invention involves the field of product preparation technology, especially a method of preparing high -pure sulfuric acid oxytic acid solution. Background technique [0002] The full -scale liquid stream battery has the advantages of high safety, long life, high cost performance, capacity adjustment, environmental friendly, etc., and is one of the first choice for large -scale and efficient energy storage technology. The battery system consists of electrodes, electrolytes, membranes, and other supporting components. Among them, sulfate oxygate electrolyte is the most important part of the entire system. In industrial production, the preparation of sulfuric acid oxygenic electrolyte is mainly used through the reducing agent. In the sulfuric acid system, the penta oxidation two -bonus is originally turned into quadranga, and the sulfuric acid oxygenic solution is made. [0003] CN103193268A revealed a method of sulfate oxygenycodicly electrolytic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/00
CPCC01G31/00Y02E60/50Y02E60/10
Inventor 杜浩李力潘博牟文恒王少娜班琦勋刘彪吕页清
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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