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Method for recycling waste vanadium catalyst through column chromatography leaching

A waste vanadium catalyst and waste catalyst technology are applied in the chemical industry, which can solve the problems of low vanadium leaching efficiency and high energy consumption, and achieve the effects of less reducing agent dosage, low solid-liquid ratio and simple operation.

Active Publication Date: 2022-02-15
贵州威顿催化技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method also has the problems of high energy consumption and low vanadium leaching efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for column chromatography leaching and recycling waste vanadium catalyst, comprising the following steps:

[0021] (1) Crush the spent vanadium catalyst to a 5-mesh sieve, put the sieved spent catalyst into a chromatographic column with a diameter of 40 mm, the filling height is 30 cm, and the upper part is stuffed with cotton;

[0022] (2) Pour 300 g of distilled water slowly from the upper end of the chromatography column to wet the spent catalyst particles, add a liquid storage ball to the upper end of the chromatography column, then pour 300 g of distilled water, and use 500 mL of The beaker collects the leaching solution 1;

[0023] (3) After the catalyst in the chromatography column turns brown, stop the water immersion, add 10% oxalic acid solution to the storage ball, and change the beaker to continue collecting the leaching solution 2;

[0024] (4) Heat and boil the leaching solution 1 in the beaker, filter to remove the suspended solid 1 and filtrate...

Embodiment 2

[0031] A method for column chromatography leaching and recycling waste vanadium catalyst, comprising the following steps:

[0032] (1) Crush the spent vanadium catalyst to a 20-mesh sieve, put the sieved spent catalyst into a chromatographic column with a diameter of 40 mm, the filling height is 30 cm, and the upper part is plugged with cotton;

[0033] (2) Pour 300 g of distilled water slowly from the upper end of the chromatography column to wet the spent catalyst particles, add a liquid storage ball to the upper end of the chromatography column, then pour 300 g of distilled water, and use 500 mL of The beaker collects the leaching solution 1;

[0034] (3) After the catalyst in the chromatography column turns brown, stop the water immersion, add 10% oxalic acid solution to the storage ball, and change the beaker to continue collecting the leaching solution 2;

[0035] (4) Heat and boil the leaching solution 1 in the beaker, filter to remove the suspended solid 1 and filtrat...

Embodiment 3

[0042] A method for column chromatography leaching and recycling waste vanadium catalyst, comprising the following steps:

[0043] (1) Crush the spent vanadium catalyst to a 10-mesh sieve, put the sieved spent catalyst into a chromatographic column with a diameter of 40 mm, the filling height is 30 cm, and the upper part is stuffed with cotton;

[0044] (2) Pour 300 g of distilled water slowly from the upper end of the chromatography column to wet the spent catalyst particles, add a liquid storage ball to the upper end of the chromatography column, then pour 300 g of distilled water, and use 500 mL of The beaker collects the leaching solution 1;

[0045] (3) After the catalyst in the chromatography column turns brown, stop the water immersion, add 10% oxalic acid solution to the storage ball, and change the beaker to continue collecting the leaching solution 2;

[0046] (4) Heat and boil the leaching solution 1 in the beaker, filter to remove the suspended solid 1 and filtrate ...

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PUM

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Abstract

The invention discloses a method for recycling a waste vanadium catalyst through column chromatography leaching. The method comprises the following steps of: crushing a waste vanadium catalyst to 5-20 meshes, washing out soluble alkali metal salt in the catalyst by using distilled water, concentrating and separating to obtain an alkali metal salt, washing by using an oxalic acid solution with a reduction effect to convert high-valence insoluble vanadium into soluble vanadium, putting the soluble vanadium into a solution, performing selective adsorption by using phosphoramidate chelate resin, separating vanadium, and converting the vanadium into ammonium metavanadate through ammoniation vanadium precipitation. According to the invention, the method is simple to operate and short in process technology, vanadium in the waste vanadium catalyst can be recycled with low energy consumption and high efficiency, and the dosage of a reducing agent and water can be reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for column chromatography leaching and recycling spent vanadium catalysts. Background technique [0002] In the current industrialization process, vanadium is an important strategic resource. Because of its many unique and excellent physical and chemical properties, it has been widely used in metallurgy, petrochemical industry, aviation industry, modern energy and other fields. Vanadium catalyst is the key to the large-scale production of sulfuric acid. It will be poisoned and invalidated during use, and a large number of spent vanadium catalysts will be replaced from the device every year. If these spent vanadium catalysts are directly discarded and landfilled without treatment, they will cause damage to local soil, Water sources and the environment have caused huge pollution, and at the same time, a large amount of land resources will be occupie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B34/22
CPCC22B7/007C22B34/225Y02P10/20
Inventor 田坤阳新锋罗昊楠欧阳建梅周帅杨胜飞李庆峰刘应炜李兴鹏
Owner 贵州威顿催化技术有限公司