Sulfuric acid decolorant

A technology of decolorizing agent and sulfuric acid, which is applied in the field of decolorizing agent, can solve the problems of ecological environmental hazards, waste of resources, difficulty in obtaining transparent sulfuric acid, etc., and achieve the effect of reducing side reactions and low cost

Inactive Publication Date: 2013-07-31
刘立文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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,

Method used

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with specific examples.

[0016] The sulfuric acid decolorizing agent of the present embodiment comprises the following components in percentage by weight: dehydrated alcohol 50%, diatomaceous earth 23%, gac 23%, free acid 3-acetylmercapto-2-methylpropionyl-L-proline Acid 4%.

[0017] The preparation method of the sulfuric acid decolorizing agent of this embodiment: mix absolute ethanol, diatomaceous earth and activated carbon together to make a suspension, and then add the free acid 3-acetylmercapto-2-methylpropionyl-L-proline Acid is poured into it to make the solution acidic to reduce other side reactions.

[0018] The method of using the sulfuric acid decoloring agent in this embodiment: according to the mass ratio of the sulfuric acid decoloring agent and colored sulfuric acid (50% mass concentration) is 1:4, add the sulfuric acid decoloring agent to the colored dilute sulfuric acid, st...

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Abstract

A sulfuric acid decolorant comprises 50-60wt% of anhydrous ethanol, 15-25wt% of diatomite, 15-25wt% of active carbon, and 1-5wt% of free acid 3-acetylmercapto-2-methylpropiono-L-proline. The sulfuric acid decolorant which utilizes diatomite and active carbon to realize a dual adsorption function adsorbs pigments free in sulfuric acid, allows contained pigments to disappear, and can acidify diatomite and reduce the side reactions of dilute sulfuric acid through the addition of free acid 3-acetylmercapto-2-methylpropiono-L-proline, The sulfuric acid decolorant can rapidly and effectively remove the color of sulfuric acid and has a low cost.

Description

technical field [0001] The invention relates to a decolorizing agent, in particular to a 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 decolorization process will also cause environm...

Claims

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Application Information

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IPC IPC(8): C01B17/90
Inventor 刘立文刘珍如宁爱民宁勇宁江天刘勇鲁纪鸣
Owner 刘立文
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