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Peroxyacetic acid solution without additives and method for preparing same

A technology of peracetic acid and ultra-pure peracetic acid, which is applied in the field of highly stable peracetic acid solution and its preparation, can solve the problems of increasing the impurity content of peracetic acid, reducing the service life of equipment, environmental pollution, etc., and improving the reaction yield , reduce by-products, and reduce production costs

Active Publication Date: 2012-09-12
SUZHOU CRYSTAL CLEAR CHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of phosphorus and other additives not only increases the impurity content in peracetic acid, making it impossible to apply in industries such as biological preparations and food, but also the addition of phosphorus and other additives will cause corrosion to equipment, reduce equipment life, and cause other side reactions , by-products, and at the same time, it will also cause eutrophication of water bodies and cause pollution to the environment

Method used

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  • Peroxyacetic acid solution without additives and method for preparing same
  • Peroxyacetic acid solution without additives and method for preparing same
  • Peroxyacetic acid solution without additives and method for preparing same

Examples

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Embodiment 1

[0037] This embodiment provides a method for preparing high-purity hydrogen peroxide with a mass concentration of 70%, which includes the following steps:

[0038] (1), preparation of 70% high-purity EL grade hydrogen peroxide

[0039] 1. Take commercially available ordinary hydrogen peroxide (70wt%), control the temperature at 0-15°C, then pass the hydrogen peroxide through a macroporous adsorption resin adsorption column (AB series macroporous adsorption resin from Bengbu Tianxing Resin Company in Anhui Province), control the flow rate to 500L / H, and the resin Treatment life (<2000 times resin volume), reduce the content of organic impurities in hydrogen peroxide to below 20ppm.

[0040] 2. Pass the hydrogen peroxide through step 1 through a cation exchange column (styrene-based cation exchange resin, trade mark China 732), and control the flow rate to 500 L / H. Reduce the impurity content of metal ions in hydrogen peroxide to below 100ppb.

[0041] ③. Pass the hydrogen per...

Embodiment 2

[0056] This embodiment provides a kind of preparation method of the high-purity glacial acetic acid of mass concentration>99.9%, specifically as follows:

[0057] (1) glacial acetic acid is passed through molecular sieves (3A-EPG, 3A-PPG, particle diameter 3~5mm), the moisture content in glacial acetic acid is reduced to below 0.01wt%;

[0058] (2) According to the inspection situation of incoming materials, potassium permanganate is added in a ratio of 0.1% to 0.01% by mass to prepare distillation raw materials, reduce the amount of reducing substances such as formic acid and acetaldehyde in the raw materials, and reduce the reducing substance quality from 0.3% to 0.03% or less.

[0059] (3) Pass glacial acetic acid into the rectification tower for rectification, the cooling water flow rate is 5±1L / H, the steam pressure is 0.10±0.05Mpa, the feed flow rate is 200±50L / H, the tower top temperature is 117.1±0.1°C, and the anion The concentration is reduced to below 200ppb, and t...

Embodiment 3～7

[0065] Present embodiment provides the method for preparing peracetic acid solution and ultrapure peracetic acid solution without additive simultaneously, and it comprises the steps:

[0066] (1) Clean the reaction kettle, packaging barrel, rectification tower and pipeline used in production. Taking the packaging barrel as an example, the cleaning process is as follows: In the clean room, soak the packaging barrel with distilled water with a conductivity greater than 18.2M for 12 hours , Then rinse with 0.4Mpa pressure distilled water, and drain; then fill the packaging barrel with 35% high-purity peracetic acid solution, and store it at 25°C for 24 hours, drain the peracetic acid, and use distilled water with a conductivity greater than 18.2M Clean, purify compressed air and blow dry for later use, test the distilled water for cleaning, and the content of various pollutants in it is less than 5ppb. Store in a cleaned packaging drum with 35% peracetic acid solution, store at 2...

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Abstract

The invention relates to a peroxyacetic acid solution without additives and a method for preparing the same. The peroxyacetic acid solution consists of the following components: 2 to 40 percent of peroxyacetic acid, 10 to 35 percent of hydrogen peroxide, less than or equal to 5ppb of metal ion impurities, less than or equal to 1ppm of anion impurities, less than or equal to 5ppm of organic impurities and the balance of water, wherein less than or equal to 100 particles of which the size is more than or equal to 0.2 mu m exist in each milliliter of the peroxyacetic acid solution. The method comprises the following steps of putting high-purity hydrogen peroxide and high-purity glacial acetic acid in a reaction kettle, heating the mixture to between 40 and 50 DEG C, stirring the mixture for 20 to 40 hours, and then filtering and filling to obtain the finished product. The peroxyacetic acid solution obtained by the method has a high purity and can be applied to high-end fields such as medical treatment, food and biological agents, and the application field of the peroxyacetic acid is widened; when the peroxyacetic acid solution is applied to the field of reagent synthesis, side reaction and by-products are reduced, and the reaction yield is improved; and the peroxyacetic acid solution is environment-friendly.

Description

technical field [0001] The invention relates to a highly stable peroxyacetic acid solution without additives and a preparation method thereof. Background technique [0002] Peracetic acid is a colorless liquid with a pungent odor. It is a strong oxidant and is easy to decompose. Under the conditions of alkalinity, reducing substances and metal ions, it will react violently, decompose or even explode. Peracetic acid is an excellent organic peroxide, which has a wide range of applications in many aspects. It has high-efficiency and rapid bactericidal effect, and can quickly kill bacteria, spore fungi, yeast and other germs, so it can be used as a treatment for infectious diseases. , drinking water, food and other disinfectants. During the SARS period and the Wenchuan earthquake epidemic prevention period, peracetic acid played a major role. Peracetic acid also has excellent oxidation properties and can be used as an organic synthesis oxidant, epoxy oxidant, polymerization in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C409/26C07C407/00
Inventor 王涛刘兵
Owner SUZHOU CRYSTAL CLEAR CHEMICAL CO LTD
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