Preparation method and application of efficient environment-friendly corrosion-inhibition peroxyacetic acid disinfectant

Abstract

The invention discloses a preparation method and application of an efficient environment-friendly corrosion-inhibition peracetic acid disinfectant, and belongs to the technical field of disinfection. According to the high-efficiency environment-friendly corrosion-inhibition peroxyacetic acid disinfectant provided by the invention, hydrogen peroxide, acetic acid, 1-hydroxyethylidene-1, 1-diphosphonic acid, a compound stabilizer, a surfactant and a carbon quantum dot corrosion inhibitor are used as raw materials according to a certain proportion, the raw materials are mixed in a microreactor to initiate a reaction, and a heat exchanger is used for controlling the temperature, so that 20-30% peroxyacetic acid is generated; the synthesized peracetic acid enters a mixing tank, and a compound stabilizer and a carbon quantum dot corrosion inhibitor are circularly added to prepare the disinfectant. Continuous preparation is realized by adopting a circulating process of the microreactor and the mixing tank, the method has the advantages of simplicity in operation, no environmental pollution and industrial three wastes, short reaction period and high safety, corrosion to a disinfected object can be slowed down by adding the carbon quantum dot corrosion inhibitor, the service life is prolonged, and the stability is improved; the cleaning agent has the characteristics of high efficiency, environmental protection, corrosion inhibition and broad spectrum, and can quickly kill bacteria, viruses, fungi and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of disinfection technology, and particularly relates to a preparation method of high-efficiency environment-friendly corrosion-inhibiting peracetic acid disinfectant and application thereof BACKGROUND

[0002] Peracetic acid is a colorless irritating odor liquid, belongs to a strong oxidant, is easy to decompose, and under the conditions of alkaline, reducing substances and metal ions, reacts violently, decomposes and even explodes. Peracetic acid solution is a kind of oxidizing green ecological bactericide. Compared with traditional disinfectants, peracetic acid is a new type of disinfectant for killing bacteria, fungi, yeast and other bacteria. The solution is generally composed of peracetic acid, hydrogen peroxide and acetic acid, and the main active ingredient is peracetic acid. It destroys the outer cell membrane and cell wall of microorganisms through oxidation, destroys the enzyme system, inactivates microorganisms, and peracetic acid can penetrate the outer shell of the bud and destroy the internal macromolecules such as sugars, nucleic acids and lipids. Ultimately, the cell lysis and death are caused. There are two types of peracetic acid products on the market, one is binary type, and the product is divided into A and B components. The A liquid is glacial acetic acid + sulfuric acid, and the B liquid is hydrogen peroxide. They are stored separately, and mixed according to a certain proportion before use. The mixed reaction generates peracetic acid solution, which is diluted to the required concentration after 24 to 48 hours of storage for use. But it needs to be activated before use, which is not convenient to use. The monovalent type is only peracetic acid solution, which can be directly used after dilution. This packaging is simple and easy to use, but the stability is poor. The research on monovalent peracetic acid can solve the problems existing in binary products, but the stability of monovalent peracetic acid has always been a technical problem.

[0003] The traditional synthesis of peracetic acid is carried out by using a batch reaction production method, a large amount of sulfuric acid as a catalyst, and a reaction time of 10-40 hours. The reaction time is long, the concentration of peracetic acid is low, the production efficiency is low, and the obtained peracetic acid contains sulfuric acid and has strong acidity. The present application realizes the continuous preparation of peracetic acid disinfectant by using the circulation process of micro-reactor and mixing tank, simplifies the process flow, and has the advantages of simple operation, no environmental pollution, no industrial three wastes, short reaction period, improved safety of the preparation process, addition of special corrosion inhibitors and compound stabilizers in the peracetic acid disinfectant, reduced corrosion of the disinfection object material, prolonged service life, and improved stability of the disinfectant. SUMMARY

[0004] The main purpose of the present application is to provide a preparation method of high-efficiency environment-friendly corrosion-inhibiting peracetic acid disinfectant and application thereof, and to provide a disinfectant with high-efficiency environment-friendly corrosion inhibition, broad spectrum characteristics and rapid killing of bacteria, viruses and fungi.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: 1. Characterized by using peracetic acid disinfectant solution prepared from raw materials in the following mass ratio as the active ingredient: Hydrogen peroxide: 20-55%; Acetic acid: 30-50%; Hydroxyethylidene diphosphonic acid: 0.01-2.0%; Compound stabilizer: 0.5-3.0% Quantum dot corrosion inhibitor in carbon: 0.01-1.5%; 2. A method for preparing a highly efficient and environmentally friendly corrosion-inhibiting peracetic acid disinfectant as described in claim 1, and its application, characterized by comprising the following steps: (1) Synthesis of peracetic acid: Hydrogen peroxide, hydroxyethylidene diphosphonic acid and acetic acid as described in claim 1 are mixed and the reaction is initiated in a microreactor. The reaction temperature is controlled by a heat exchanger, and the concentration of peracetic acid produced is 20-30%.

[0006] (2) Preparation of peracetic acid disinfectant: The solution obtained in step ① is used to prepare peracetic acid disinfectant by adding compound stabilizer and carbon quantum dot corrosion inhibitor through a mixing tank circulation process.

[0007] (3) Carbon quantum dot corrosion inhibitor according to claim 1: Carbon quantum dot corrosion inhibitor is synthesized using glucose and thiourea as raw materials.

[0008] (4) The stabilizers in the composition according to claim 1 are: three of the following: hydroxyethylidene diphosphonic acid, ethylenediaminetetramethylidene phosphonic acid, 2,6-pyridinedicarboxylic acid, pyridinecarboxylic acid, sodium molybdate, sodium hexametaphosphate, potassium pyrophosphate, sodium gluconate, and fatty alcohol polyoxyethylene ether.

[0009] Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention utilizes a microreactor and mixing tank circulation process to achieve continuous preparation of peracetic acid disinfectant, simplifying the process flow, making operation simple, eliminating environmental pollution and industrial waste, shortening the reaction cycle, and improving the safety of the preparation process.

[0010] This invention incorporates a unique compound stabilizer into peracetic acid disinfectant, which extends its service life and improves the stability of the disinfectant.

[0011] In this invention, a unique corrosion inhibitor is added to the peracetic acid disinfectant, which reduces the corrosiveness to the materials being disinfected. Due to the acetic acid's properties, it has a corrosion-inhibiting effect. The addition of our company's corrosion inhibitor in this invention can effectively resist the corrosion of various metals by the disinfectant.

[0012] This invention employs microreactor technology, adding metal corrosion inhibitors and compound stabilizers to simultaneously solve the instability problem of peracetic acid and reduce its corrosiveness to metals. It has strong bactericidal ability, fast action, good stability, and the combined corrosion inhibitor and acetic acid have a good corrosion inhibition effect. Moreover, the invented peracetic acid disinfectant is easy to use; it can be directly diluted with water to disinfect object surfaces, resulting in low cost and good disinfection effect.

Claims

1. Characterized by, The peracetic acid disinfectant solution prepared from the following raw materials in the specified mass ratio is used as the active ingredient: Hydrogen peroxide: 20-55%; Acetic acid: 30-50%; Hydroxyethylidene diphosphonic acid: 0.01-2.0%; Compound stabilizer: 0.5-3.0% Quantum dot corrosion inhibitor in carbon: 0.01-1.5%.

2. A method for preparing a highly efficient and environmentally friendly corrosion-inhibiting peracetic acid disinfectant as described in claim 1, and its application, characterized in that... Includes the following steps: (1) Synthesis of peracetic acid: Hydrogen peroxide, hydroxyethylidene diphosphonic acid and acetic acid as described in claim 1 are mixed and the reaction is initiated in a microreactor. The reaction temperature is controlled by a heat exchanger, and the concentration of peracetic acid produced is 20-30%.

3. (2) Preparation of peracetic acid disinfectant: The solution obtained in step ① is used to prepare peracetic acid disinfectant by adding compound stabilizer and carbon quantum dot corrosion inhibitor through a mixing tank circulation process.

4. (3) Carbon quantum dot corrosion inhibitor according to claim 1: Carbon quantum dot corrosion inhibitor synthesized from glucose and thiourea.

5. (4) The stabilizers in the composition according to claim 1 are: three of the following: methyl ethylidene diphosphonic acid, ethylenediaminetetramethylidene phosphonic acid, 2,6-pyridinedicarboxylic acid, pyridinecarboxylic acid, sodium molybdate, sodium hexametaphosphate, potassium pyrophosphate, sodium gluconate, and fatty alcohol polyoxyethylene ether.