KR-20260064323-A - Method for producing acetic acid peroxide stably

Abstract

The present invention relates to a method for stably producing acetic peroxide by inactivating decomposition-promoting substances introduced from reagents, solvents, containers, etc., during the manufacturing process of acetic peroxide, and reacting while controlling the input of hydrogen peroxide together with a stabilizer, comprising: a) a first-stage reaction in which a stabilizer, acetic acid, and hydrogen peroxide are sequentially input and reacted; and b) a second-stage reaction in which a stabilizer is additionally input and reacted with the first-stage reactants. The manufacturing method according to the present invention is characterized by ensuring production stability by controlling the decomposition catalyst metal contained in the reactants by adding a stabilizer before the reaction, and stably producing peracetic acid by controlling the reaction while adding hydrogen peroxide in 3 to 5 separate steps.

Inventors

• 김규일
• 신수지

Assignees

• 주식회사 포어스

Dates

Publication Date

20260507

Application Date

20241031

Claims (6)

1. a). A first-stage reaction in which a stabilizer, acetic acid ( CH₃COOH ), and hydrogen peroxide ( H₂O₂ ) are sequentially added and reacted , and b) A method for stably producing peracetic acid, characterized by including a second-step reaction in which a stabilizer is additionally added to the first-step reactant and reacted.
2. A method for stably producing acetic peroxide according to claim 1, wherein the first step reaction involves sequentially adding a stabilizer, acetic acid, and hydrogen peroxide, and wherein the stabilizer is added in an amount of 0.01 to 0.1 weight% based on the reactants before the reaction of acetic acid and hydrogen peroxide.
3. A method for stably producing peracetic acid according to claim 2, wherein the first step reaction is characterized by sequentially adding 1 to 30 parts by weight of acetic acid ( CH₃COOH ) and 10 to 90 parts by weight of hydrogen peroxide ( H₂O₂ ), wherein the hydrogen peroxide is added in 3 to 5 divided steps while reacting.
4. A method for stably producing peracetic acid according to claim 3, characterized in that the second step reaction is carried out by additionally adding 0.1 to 2 parts by weight of a stabilizer to 100 parts by weight of the first step reactant.
5. A method for stably producing peracetic acid, characterized in that, in any one of claims 1 to 5, the stabilizer is selected from one or more components of an aliphatic dicarboxylic acid, an aliphatic tricarboxylic acid, a diphosphate, and a phosphorylated carboxylic acid.
6. A method for stably producing peracetic acid according to claim 5, characterized in that the aliphatic dicarboxylic acid is malonic acid, succinic acid, oxalic acid, tartaric acid, maleic acid, diglycolic acid; the aliphatic tricarboxylic acid is citric acid, propane-1,2,3-tricarboxylic acid; the diphosphate is hexaethylenedi-phosphoric acid; and the phosphorylated carboxylic acid is phosphonoacetic acid, 2-hydroxyphosphonoacetic acid.

Description

Method for producing acetic acid peroxide stably The present invention relates to a method for stably producing peracetic acid (PAA), and specifically, to a method for stably producing peracetic acid by inactivating decomposition-promoting substances introduced from reagents, solvents, containers, etc., during the process of producing peracetic acid. Peracetic acid (PAA) is a powerful oxidizing agent and disinfectant that is used as a pesticide or preservative to eliminate mold, bacteria, and pests, and is utilized in various fields, such as being used as an insecticide in organic farming. It is evaluated as a very useful chemical that can minimize environmental pollution due to its characteristic of decomposing into water and carbon dioxide without leaving any residue in the environment after use. The aforementioned acetic peroxide is generally produced from acetic acid and hydrogen peroxide, but since it is a very unstable compound, it is important to ensure stability during production. Organic peroxides such as hydrogen peroxide and acetic peroxide are highly reactive substances with low thermal and chemical stability, which makes it difficult to freely control the reaction. In particular, it is known that they undergo rapid decomposition in the presence of inorganic ions such as iron, magnesium, calcium, zinc, and manganese, resulting in large fluctuations in production yield. Regarding the method for manufacturing peracetic acid, prior art examples include Patent Document 1, which discloses a tablet-type peracetic acid-based disinfectant comprising, as active ingredients, 10 to 25 parts by weight of an acetate selected from the group consisting of ammonium acetate, potassium acetate, and calcium acetate, 3 to 10 parts by weight of sodium percarbonate, 1 to 5 parts by weight of an organic acid, 0.5 to 5 parts by weight of a chelating agent, 5 to 25 parts by weight of a solubilizing agent, 1 to 5 parts by weight of a lubricant, and 60 to 75 parts by weight of sodium carbonate, wherein the tablet-type disinfectant synthesizes peracetic acid by reacting acetic acid with hydrogen peroxide when dissolved in water, and Patent Document 2 discloses 1 to 25% by weight of peracetic acid, 0.5 to 15% by weight of acetic acid, 1 to 30% by weight of hydrogen peroxide, and 1 to A method for preparing an aqueous peracetic acid solution is disclosed, comprising 15% by weight of an organic acid, 1 to 5% by weight of a chelating agent, and the remainder being water, wherein the chelating agent is selected from the group consisting of [[(phosphonomethyl)imino]]bis[[2,1-ethyndiylnitrobis(methylene)]tetrakisphosphonic acid, [bis(phosphonomethyl)amino]methylphosphonic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid, 2-hydroxyphosphonoacetic acid, and mixtures thereof, and the organic acid is selected from the group consisting of lactic acid, uric acid, and mixtures thereof. In addition, Patent Document 3 discloses a low-concentration peracetic acid-based disinfectant composition with improved stability, comprising a low-concentration peracetic acid composition containing peracetic acid, hydrogen peroxide, acetic acid, and water, a phosphate, and an ethanol extract of bittercress, wherein the phosphate is included in the low-concentration peracetic acid composition at a concentration of 25 to 500 ppm and the bittercress ethanol extract is included in the low-concentration peracetic acid composition at a concentration of 100 to 1000 ppm. The inventor of the present invention completed the present invention by stably producing acetic peroxide by controlling the timing of the introduction of a stabilizer and the introduction of hydrogen peroxide during the manufacturing process of acetic peroxide. The present invention is described in detail below through specific details for implementing the invention, but the present invention is not limited by the description below. A method for stably producing peracetic acid according to the present invention comprises: a) a first step reaction in which 0.01 to 0.1 weight% of a stabilizer based on the reactants is added before the reaction, and 1.0 to 30 weight parts of acetic acid ( CH₃COOH ) and 10 to 90 weight parts of hydrogen peroxide ( H₂O₂ ) are added sequentially, wherein the hydrogen peroxide is added in 3 to 5 divided steps while the reaction is carried out; and b) a second step reaction in which 0.1 to 2 weight parts of a stabilizer are additionally added to 100 weight parts of the first step reactants and the reaction is carried out. The first step reaction according to the present invention is performed by adding a stabilizer before the reaction to inactivate and control decomposition-promoting substances, such as metals, included in the reactants, thereby ensuring stability against the generation of peracetic acid. In the first step of the above reaction , acetic acid ( CH₃COOH ) and hydrogen peroxide ( H₂O₂ ) are sequentially added to carry out the reaction, and the hydrogen