Composite CIP acidic cleaning agent for food processing and preparation method of composite CIP acidic cleaning agent

Abstract

The invention discloses a composite CIP (cleaning in place) acidic cleaning agent for food processing, which is prepared from the following raw materials in parts by weight according to 100 parts. The cleaning agent is prepared from the following components in parts by weight: 20-50 parts of nitric acid, 0.5-5 parts of sodium gluconate, 1-5 parts of hydroxyethylidene diphosphonic acid, 2-5 parts of citric acid, 1-3 parts of phosphoric acid, 0.5-2 parts of a surfactant and 30-75 parts of deionized water. Meanwhile, the invention further provides a preparation method of the cleaning agent. The cleaning agent is high in cleaning efficiency, low in foam, easy to wash, high in seepage force and small in corrosivity.

Description

Technical Field

[0001] The invention relates to the technical field of food processing equipment cleaning agents, specifically a composite CIP acid cleaning agent for food processing and a preparation method thereof. The cleaning agent is specially designed for food production lines and aims to provide an efficient, environmentally friendly and safe cleaning solution. Background Art

[0002] In the food production process, the cleaning and sanitation of production equipment is an important part of ensuring food safety. Traditional cleaning agents often have problems such as poor decontamination effect, serious corrosion to equipment, and poor environmental performance. Therefore, it is particularly important to develop a composite CIP acid cleaning agent that can effectively remove various dirt on the surface of food production equipment, reduce corrosion to equipment, and meet environmental protection requirements.

[0003] CIP acid cleaning agent is a composite cleaning agent with inorganic acid as the main component, generally with nitric acid or sulfuric acid as the main component, compounded with surfactants, chelating agents, corrosion and scale inhibitors, etc. It has strong acidity and can effectively remove minerals, scale, milk scale and dirt remaining on the surface of equipment and appliances and in pipelines.

[0004] The dosage of compound cleaning agent is better than that of industrial acid and alkali, and because it can add metal protective agents such as corrosion inhibitors and passivators, it can delay metal corrosion, extend equipment life, help protect equipment, reduce losses, and improve cleaning efficiency. Summary of the invention

[0005] The object of the present invention is to provide a composite CIP acid cleaning agent for food processing, which has good descaling and cleaning ability, can effectively remove various dirt on the surface of food industry production equipment, while reducing corrosion to the equipment, meets environmental protection requirements, and can adapt to the cleaning needs of different food production lines.

[0006] A composite CIP acid cleaning agent for food processing, characterized in that the cleaning agent is composed of the following components by weight percentage: Nitric acid 20~50 parts Sodium gluconate 0.5~5 parts 1~5 parts of hydroxyethylidene diphosphonic acid 2~5 parts citric acid Phosphoric acid 1~3 parts Surfactant 0.5~2 parts 30~75 parts of deionized water Sodium Gluconate: Acts as a chelating agent and buffer, helping to remove metal ions and adjust the pH of the cleaning solution.

[0007] Hydroxyethylidene diphosphonic acid: has excellent corrosion inhibition performance and can effectively protect the surface of metal equipment from corrosion Citric acid: As an acidic component, it provides the acidic environment required for cleaning and enhances the decontamination ability.

[0008] Phosphoric Acid: Further enhances the acidity and decontamination capabilities of the cleaning agent.

[0009] Nitric acid: Assists citric acid and phosphoric acid to improve cleaning effect.

[0010] Surfactants: Help reduce the surface tension of cleaning agents, improving penetration and cleaning efficiency.

[0011] Water: Acts as a solvent, diluting other components and facilitating the cleaning process.

[0012] Preparation method: The preparation method of the composite CIP acid cleaning agent of the present invention comprises the following steps: first, water is added to a batching tank and a stirring device is turned on. Sodium gluconate, hydroxyethylidene diphosphonic acid, citric acid, phosphoric acid, nitric acid and a surfactant are added to the batching tank in sequence, and stirring is continued until each component is completely dissolved and mixed evenly. After stirring, the mixed solution is allowed to settle for 24 hours to allow for sufficient reaction and stability. Finally, possible impurities and undissolved particles are removed by a filtering device to obtain a clear and transparent composite CIP acid cleaning agent.

[0013] Compared with the prior art, the composite CIP acid cleaning agent of the present invention has the following advantages: Excellent descaling and cleaning ability: It can effectively remove various dirt on the surface of food industry production equipment, including grease, protein, starch, etc. Good corrosion inhibition performance: By adding corrosion inhibitors such as hydroxyethylidene diphosphonic acid, the surface of metal equipment can be effectively protected from corrosion. Environmental protection and safety: The cleaning agent of the present invention does not contain substances harmful to the human body, meets environmental protection requirements, and will not cause harm to the environment and human body during use. Wide range of applications: It can adapt to the cleaning needs of different food production lines and has good versatility and flexibility. DETAILED DESCRIPTION

[0014] Example 1 1. A composite CIP acid cleaning agent for food processing, based on 100 parts, composed of the following raw materials in parts by weight: 45 parts of nitric acid 3 parts sodium gluconate 2 parts of hydroxyethylidene diphosphonic acid 2 parts citric acid Phosphoric acid 1 part 2 parts of C6 alkyl glycoside 45 parts of deionized water The preparation method of the composite CIP acid cleaning agent for food processing comprises the following steps: adding deionized water into a batching tank and turning on a stirring device. Sodium gluconate, hydroxyethylidene diphosphonic acid, citric acid, phosphoric acid, nitric acid and a surfactant are added in sequence. The mixture is stirred for 30 minutes until each component is completely dissolved and mixed evenly. The stirring is stopped and the mixed solution is allowed to settle for 24 hours. Impurities and undissolved particles are removed by a filtering device to obtain a clear and transparent composite CIP acid cleaning agent.

[0015] Example 2 A composite CIP acid cleaning agent for food processing, based on 100 parts, is composed of the following raw materials in parts by weight: 45 parts of nitric acid 1 part sodium gluconate 2.5 parts of hydroxyethylidene diphosphonic acid 2.5 parts citric acid Phosphoric acid 2 parts 1 part C8 alkyl glycoside 46 parts of deionized water The preparation method of the composite CIP acid cleaning agent for food processing comprises the following steps: adding deionized water into a batching tank and turning on a stirring device. Sodium gluconate, hydroxyethylidene diphosphonic acid, citric acid, phosphoric acid, nitric acid and a surfactant are added in sequence. The mixture is stirred for 30 minutes until each component is completely dissolved and mixed evenly. The stirring is stopped and the mixed solution is allowed to settle for 24 hours. Impurities and undissolved particles are removed by a filtering device to obtain a clear and transparent composite CIP acid cleaning agent.

[0016] Example 3 A composite CIP acid cleaning agent for food processing, based on 100 parts, is composed of the following raw materials in parts by weight: 45 parts of nitric acid 2.5 parts of sodium gluconate 1.5 parts of hydroxyethylidene diphosphonic acid 3.5 parts citric acid Phosphoric acid 2 parts 1.5 parts of C8 alkyl glycoside 44 parts of deionized water The preparation method of the composite CIP acid cleaning agent for food processing comprises the following steps: adding deionized water into a batching tank and turning on a stirring device. Sodium gluconate, hydroxyethylidene diphosphonic acid, citric acid, phosphoric acid, nitric acid and a surfactant are added in sequence. The mixture is stirred for 30 minutes until each component is completely dissolved and mixed evenly. The stirring is stopped and the mixed solution is allowed to settle for 24 hours. Impurities and undissolved particles are removed by a filtering device to obtain a clear and transparent composite CIP acid cleaning agent.

[0017] Detergency determination Test basis: Appendix A of QB / T 4313-2023 "Acid Cleaners for Food Tools and Industrial Equipment".

[0018] Method summary: Prepare a scale test solution with prepared water containing a certain amount of magnesium ions, bicarbonate ions, phosphate ions and calcium ions, and heat it to make the scale adhere to the beaker. In a test solution of a certain concentration of acidic cleaning agent for food tools and industrial equipment prepared with a certain amount of hard water, clean under specified conditions and measure the percentage of dirt removal.

[0019] Preparation of cleaning solution: dilute the sample at a ratio of 1:150 to obtain cleaning solution.

[0020] Cleaning process: Prepare 300ml of cleaning solution, pour it into the scale beaker, add a magnetic stirrer, and stir for 10 minutes. (The magnetic stirrer setting conditions are: 25±5℃, 500r / d to simulate CIP cleaning).

[0021] Cleaning process Figure 1 : BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 Acid cleaning agent cleaning process

[0022] The data is shown in Table 1: Table 1 Cleaning test data

[0023] From the data in the table, it can be seen that the cleaning effect of the acid cleaning agent was verified by the method of reference standard QB / T 4313-2023. There was no significant difference in the cleaning effects of the three samples, and the detergency could reach more than 99%.

Claims

1. A composite CIP acid cleaning agent for food processing, characterized in that The cleaning agent is composed of the following components by weight percentage:

2. A composite CIP acid cleaning agent for food processing according to claim 1, characterized in that: The surfactant is a mixture of alkyl glycoside with a carbon chain length of C6 to C8, branched polyoxyethylene ether and fatty acid methyl ester ethoxylate sulfonate, which is compounded in the ratio of 0.1 to 0.6: 0.2 to 0.8: 0.1 to 0.

5.

3. The method for preparing a composite CIP acid cleaning agent for food processing according to claim 1 comprises the following steps: (1) Raw material preparation: accurately weigh the raw materials of each component according to the weight percentage described in claim 1; (2) Mixing and stirring: Add water to the batching tank and turn on the stirring device. Then, add sodium gluconate, hydroxyethylidene diphosphonic acid, citric acid, phosphoric acid, nitric acid and surfactant to the batching tank in turn, and keep stirring until all the raw materials are completely dissolved and mixed evenly. During the stirring process, the stirring speed and stirring time can be adjusted as needed to ensure mixing uniformity; (3) Sedimentation Filtration: After stirring, the mixture is allowed to settle naturally for a period of time (usually 24 hours) to allow for full reaction and stabilization. Afterwards, possible impurities and undissolved particles are removed through a filtration device to obtain a clear and transparent composite CIP acid cleaning agent.

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