An environment-friendly sulfuric acid decolorizer

Abstract

The invention relates to an environment-friendly sulfuric acid decolorant. The environment-friendly sulfuric acid decolorant comprises the following raw materials in percentage by weight: 50%-60% of hydrogen peroxide, 15%-25% of anhydrous ethanol and 15%-25% of activated carbon. By using the environment-friendly sulfuric acid decolorant disclosed by the invention to decolor recovered sulfuric acid which is yellow in appearance, the quality of the recovered sulfuric acid can be improved.

Description

technical field [0001] The invention relates to a sulfuric acid decolorizing agent, in particular to an environment-friendly sulfuric acid decolorizing agent. Background technique [0002] Pure sulfuric acid is generally a colorless and transparent liquid, but when it contains impurities or the container is not clean, the sulfuric acid will turn yellow after a period of storage. If the sulfuric acid cannot be decolorized, the value of the yellowed sulfuric acid will drop significantly, and its use will be limited. [0003] In many production processes, the utilization rate of sulfuric acid is very low, and a large amount of sulfuric acid is discharged along with acid-containing wastewater. If the waste water is not recycled and discharged into nature, it will not only acidify the water body or soil, cause harm to the ecological environment, but also waste a lot of resources. However, during the recycling process, sulfuric acid is difficult to decolorize, and the decolorizat...

AI Technical Summary

Problems solved by technology

If the waste water is not recycled and discharged into nature, it will not only acidify the water body or soil, cause harm to the ecological environment, but also waste a lot of resources

However, during the recycling process, sulfuric acid is difficult to decolorize, and the decolorization process will also cause environmental pollution

[0004] CN102786036A discloses a method of using potassium permanganate to decolorize sulfuric acid. The purple potassium permanganate solution is passed into brown or dark brown sulfuric acid, and the sulfuric acid is decolorized under the oxidation of potassium permanganate. However, the potassium permanganate solution itself is purple, and it is difficult to control the input amount of the potassium permanganate solution in the reaction. If the excessive potassium permanganate solution is introduced, the sulfuric acid will show the purple color of potassium permanganate. Clear sulfuric acid is still hard to come by

However, hydrogen peroxide solution has strong oxidizing properties, and high-concentration hydrogen peroxide solution and steam are highly irritating and corrosive to the human body, and will cause certain damage to human tissue after contact

It is easy to cause danger when operating