Ceramic filter plate cleaning agent and preparation method thereof

Abstract

The invention discloses a ceramic filter plate cleaning agent and a preparation method thereof, the ceramic filter plate cleaning agent comprises 10%-20% of citric acid, 10%-20% of sulfamic acid, 10%-20% of HEDP, 10%-20% of EDTA, 10%-20% of a corrosion inhibitor, 10%-20% of AEO-9, 10%-20% of JFC and the balance of ultrapure deionized water. 2%-4% of sulfamic acid; 2%-5% of HEDP; 0.5%-2.5% of EDTA (Ethylene Diamine 0.1%-0.5% of a corrosion inhibitor; 1%-3% of AEO-9; 1%-3% of JFC; the AEO-9 is a nonionic surfactant, the sulfamic acid is inorganic solid acid formed by replacing hydroxyl of sulfuric acid with amino, the HEDP is an organic phosphonic acid scale and corrosion inhibitor, the EDTA is a powerful chelating agent, the corrosion inhibitor is benzotriazole, and the JFC is a penetrant auxiliary agent. The cleaning agent can effectively remove various dirt and impurities including organic pollutants, metal oxides, mineral particles and the like on the surface of the ceramic filter plate, does not corrode the ceramic filter plate, has good environmental protection performance, does not generate harmful gas, and is simple and feasible in cleaning process.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning agents, in particular to a cleaning agent for a ceramic filter plate and a preparation method thereof. Background Art

[0002] Nitric acid has been used in some ceramic filter plate cleaning processes because it has strong oxidizing properties and can remove some stubborn stains and impurities. However, nitric acid has many serious problems. It is highly corrosive, which not only damages the material of the ceramic filter plate, reduces its mechanical strength and service life, but may also corrode the cleaning equipment and surrounding facilities. At the same time, nitric acid will evaporate and produce a large amount of toxic and harmful nitrogen oxide gas during use, causing great pollution to the environment and endangering the health of operators. In addition, nitric acid is a hazardous chemical, and its storage, transportation and use are subject to strict regulatory restrictions, which increases the cost and safety of the enterprise. For this reason, we propose a ceramic filter plate cleaning agent. Summary of the invention

[0003] The object of the present invention is to provide a ceramic filter plate cleaning agent and a preparation method thereof to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a ceramic filter plate cleaning agent, which is composed of citric acid, aminosulfonic acid, HEDP, EDTA, corrosion inhibitor, AEO-9, JFC and ultrapure deionized water, and its ingredient percentages are: citric acid 10% to 20%; aminosulfonic acid 2% to 4%; HEDP 2% to 5%; EDTA 0.5% to 2.5%; corrosion inhibitor 0.1% to 0.5%; AEO-9 1% to 3%; JFC 1%-3%; ultrapure deionized water as the balance.

[0005] Preferably, the AEO-9 is a nonionic surfactant, aminosulfonic acid is an inorganic solid acid formed by replacing the hydroxyl group of sulfuric acid with an amino group, HEDP is an organic phosphonic acid scale inhibitor, EDTA is a strong chelating agent, the corrosion inhibitor is benzotriazole, and JFC is a penetrant aid.

[0006] A method for preparing a ceramic filter plate cleaning agent comprises the following steps:

[0007] A. First, add ultrapure deionized water into the reactor, turn on the stirring device, and set the stirring speed to 200-400 rpm;

[0008] B. Slowly add citric acid and aminosulfonic acid into the reactor in sequence and dissolve them for 10-15 minutes under stirring until they are completely dissolved;

[0009] C. Then add AEO-9 and EDTA into the reactor and continue stirring for 15-20 minutes to make the solution uniform;

[0010] D. Then add HEDP and stir for 5-10 minutes to ensure that it is evenly dispersed in the solution;

[0011] E. Add corrosion inhibitor and JFC and stir for 8-12 minutes;

[0012] F. Finally, filter the mixed cleaning agent solution to remove any insoluble matter and obtain a finished cleaning agent for ceramic filter plates.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The cleaning agent of the present invention can effectively remove various dirt and impurities on the surface of the ceramic filter plate, including organic pollutants, metal oxides, mineral particles, etc., and has no corrosive effect on the ceramic filter plate, has good environmental performance, does not generate harmful gases, and the cleaning process is simple and easy. AEO-9 can form a stable emulsion at the oil-water interface, so that the incompatible two-phase system can be mixed evenly. Through its powerful emulsification and dispersion effect, AEO-9 can effectively remove various stains, whether it is oil stains and dirt in daily life or stubborn stains in the industrial field, all can be well treated. AEO-9 does not contain harmful substances such as APEO and is environmentally friendly. AEO-9 can be used in combination with a variety of anionic, cationic and non-ionic surfactants to produce a synergistic effect, improve overall performance, and reduce the amount of additives. Citric acid, as an acidic adjuster, provides an acidic environment and has a mild cleaning effect. It is a good industrial additive. Aminosulfonic acid has the characteristics of non-volatility, no odor and low toxicity to the human body, and is used for corrosion protection and cleaning of metal residues. HEDP can form a stable It can dissolve oxides on the metal surface and still play a good role in corrosion and scale inhibition at 250℃. It is still very stable at high pH, ​​not easy to hydrolyze, and not easy to decompose under general light and heat conditions. It has better acid and alkali resistance and chlorine oxidation resistance than other organic phosphonic acids (salts). It can form a six-ring chelate with metal ions in water, especially calcium ions, so it has a good scale inhibition effect and a significant solubility limit effect. When used in combination with other water treatment agents, it shows an ideal synergistic effect. EDTA can form a stable complex with most metal ions to prevent metal ions from interfering with the stability of the formula system. It can combine with metal ions such as calcium and magnesium to remove hard water ions in water and enhance the cleaning effect. The corrosion inhibitor can form a dense protective film on the metal surface to prevent the alkaline components and other active substances in the cleaning agent from corroding the metal surface. It is especially suitable for the cleaning and protection of metal materials such as iron and copper. JFC effectively reduces surface tension, promotes penetration and emulsification, and is suitable for a variety of industrial fields. Ultrapure deionized water is used as a solvent carrier to ensure uniform mixing of the components and avoid the adverse effects of impurities in the water on the cleaning effect. DETAILED DESCRIPTION

[0015] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] A ceramic filter plate cleaning agent comprises citric acid, aminosulfonic acid, HEDP, EDTA, a corrosion inhibitor, AEO-9, JFC and ultrapure deionized water, wherein the proportions are as follows: 10% to 20% citric acid; 2% to 4% aminosulfonic acid; 2% to 5% HEDP; 0.5% to 2.5% EDTA; 0.1% to 0.5% corrosion inhibitor; 1% to 3% AEO-9; 1% to 3% JFC; and the balance is ultrapure deionized water.

[0017] The cleaning agent can effectively remove various dirt and impurities on the surface of the ceramic filter plate, including organic pollutants, metal oxides, mineral particles, etc. At the same time, it has no corrosive effect on the ceramic filter plate, has good environmental performance, does not produce harmful gases, and the cleaning process is simple and easy. AEO-9 can form a stable emulsion at the oil-water interface, so that the incompatible two-phase system can be mixed evenly. Through its powerful emulsification and dispersion effect, AEO-9 can effectively remove various stains, whether it is oil stains and dirt in daily life or stubborn stains in the industrial field, they can be well treated. AEO-9 does not contain harmful substances such as APEO and is environmentally friendly. AEO-9 can be used in combination with a variety of anionic, cationic and non-ionic surfactants to produce synergistic effects, improve overall performance, and reduce the amount of additives. Citric acid, as an acidic adjuster, provides an acidic environment and has a mild cleaning effect. It is a good industrial additive. Aminosulfonic acid is non-volatile, odorless and has low toxicity to the human body. It is used as an anti-corrosion and cleaning metal residue. HEDP can form stable with various metal ions such as iron, copper, and zinc. Complex, can dissolve oxides on metal surface, can still play a good role in corrosion and scale inhibition at 250℃, is still very stable at high pH, ​​not easy to hydrolyze, not easy to decompose under general light and heat conditions, has better acid and alkali resistance and chlorine oxidation resistance than other organic phosphonic acids (salts), can form six-ring chelates with metal ions in water, especially calcium ions, so it has good scale inhibition effect and obvious solubility limit effect, and when used in combination with other water treatment agents, it shows an ideal synergistic effect. EDTA can form stable complexes with most metal ions to prevent metal ions from interfering with the stability of the formula system. Combined with metal ions such as calcium and magnesium, it can remove hard water ions in water and enhance the cleaning effect. The corrosion inhibitor can form a dense protective film on the metal surface to prevent the alkaline components and other active substances in the cleaning agent from corroding the metal surface. It is especially suitable for the cleaning and protection of metal materials such as iron and copper. JFC effectively reduces surface tension, promotes penetration and emulsification, and is suitable for a variety of industrial fields. Ultrapure deionized water is used as a solvent carrier to ensure uniform mixing of the components and avoid the adverse effects of impurities in the water on the cleaning effect.

[0018] AEO-9 is a nonionic surfactant, aminosulfonic acid is an inorganic solid acid formed by replacing the hydroxyl group of sulfuric acid with an amino group, HEDP is an organic phosphonic acid scale inhibitor, EDTA is a strong chelating agent, the corrosion inhibitor is benzotriazole, and JFC is a penetrant aid.

[0019] A method for preparing a ceramic filter plate cleaning agent comprises the following steps:

[0020] A. First, add ultrapure deionized water into the reactor, turn on the stirring device, and set the stirring speed to 200-400 rpm;

[0021] B. Slowly add citric acid and aminosulfonic acid into the reactor in sequence and dissolve them for 10-15 minutes under stirring until they are completely dissolved;

[0022] C. Then add AEO-9 and EDTA into the reactor and continue stirring for 15-20 minutes to make the solution uniform;

[0023] D. Then add HEDP and stir for 5-10 minutes to ensure that it is evenly dispersed in the solution;

[0024] E. Add corrosion inhibitor and JFC and stir for 8-12 minutes;

[0025] F. Finally, filter the mixed cleaning agent solution to remove any insoluble matter and obtain a finished cleaning agent for ceramic filter plates.

[0026] 1. Impurity removal rate test: Ceramic filter plate samples with similar contamination degree (contaminated impurities include kaolin mineral particles, oily organic pollutants, protein colloids, etc.) were selected and immersed in containers containing three cleaning agent samples respectively. The immersion temperature was 40°C and the immersion time was 60 minutes. Then the ceramic filter plate was taken out, rinsed with clean water, weighed after drying, and the impurity removal rate was calculated. The results showed that the impurity removal rate of cleaning agent sample 1 was 88%, the impurity removal rate of cleaning agent sample 2 was 92%, and the impurity removal rate of cleaning agent sample 3 was 90%, indicating that the cleaning agent of the present invention has a good removal effect on various impurities on the surface of the ceramic filter plate.

[0027] 2. Ceramic plate strength test: The new ceramic filter plate was immersed in three cleaning agent samples for 48 hours at a temperature of 25°C. After being taken out, the flexural strength of the ceramic filter plate was tested using professional ceramic material strength testing equipment. The test results showed that after cleaning, the flexural strength of the ceramic filter plates treated with the three cleaning agents was less than 5% compared with that of the new ceramic filter plates that were not cleaned, indicating that the cleaning agent of the present invention has no obvious damage to the material of the ceramic filter plate.

[0028] 3. Environmental protection test: The biodegradability of the three cleaning agent samples was tested using standard biodegradation test methods (such as OECD 301A test method). After testing, the biodegradation rates of the three cleaning agents within the specified time all reached more than 90%, meeting environmental protection requirements.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ceramic filter plate cleaning agent, characterized in that: The ceramic filter plate cleaning agent is composed of citric acid, aminosulfonic acid, HEDP, EDTA, corrosion inhibitor, AEO-9, JFC and ultrapure deionized water, and the ingredient percentages are: citric acid 10% to 20%; aminosulfonic acid 2% to 4%; HEDP 2% to 5%; EDTA 0.5% to 2.5%; corrosion inhibitor 0.1% to 0.5%; AEO-9 1% to 3%; JFC 1%-3%; ultrapure deionized water as the balance.

2. A ceramic filter plate cleaning agent according to claim 1, characterized in that: The AEO-9 is a nonionic surfactant, aminosulfonic acid is an inorganic solid acid formed by replacing the hydroxyl group of sulfuric acid with an amino group, HEDP is an organic phosphonic acid scale inhibitor, EDTA is a strong chelating agent, the corrosion inhibitor is benzotriazole, and JFC is a penetrant aid.

3. A method for preparing a ceramic filter plate cleaning agent, characterized in that: The following steps are involved: A. First, add ultrapure deionized water into the reactor, turn on the stirring device, and set the stirring speed to 200-400 rpm; B. Slowly add citric acid and aminosulfonic acid into the reactor in sequence and dissolve them for 10-15 minutes under stirring until they are completely dissolved; C. Then add AEO-9 and EDTA into the reactor and continue stirring for 15-20 minutes to make the solution uniform; D. Then add HEDP and stir for 5-10 minutes to ensure that it is evenly dispersed in the solution; E. Add corrosion inhibitor and JFC and stir for 8-12 minutes; F. Finally, filter the mixed cleaning agent solution to remove any insoluble matter and obtain a finished cleaning agent for ceramic filter plates.