CN112725813A - Acidic cleaning agent and preparation method thereof - Google Patents
Acidic cleaning agent and preparation method thereof Download PDFInfo
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- CN112725813A CN112725813A CN202011559047.3A CN202011559047A CN112725813A CN 112725813 A CN112725813 A CN 112725813A CN 202011559047 A CN202011559047 A CN 202011559047A CN 112725813 A CN112725813 A CN 112725813A
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- cleaning agent
- acidic cleaning
- sulfamic acid
- inorganic salt
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/061—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors nitrogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/063—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors heterocyclic compounds
Abstract
An acidic cleaning agent for a circulating water system is mainly prepared from the following raw materials in parts by weight: 10-20 parts of sulfamic acid, 1-7 parts of inorganic salt, 10-20 parts of complexing agent, 1-6 parts of corrosion inhibitor and 0.1-0.7 part of surfactant. The invention aims to provide an acid cleaning agent which is low in cost, can quickly and effectively remove calcium scale and corrosion products, can accelerate the cleaning speed, can effectively inhibit the corrosion of metal by using a corrosion inhibitor, is non-toxic and phosphorus-free, is environment-friendly and has stable performance. The acidic cleaning agent can be used for cleaning heat exchanger equipment such as an industrial circulating cooling water system and other circulating water systems.
Description
Technical Field
The invention relates to the field of preparation of a descaling agent, and particularly relates to an acidic cleaning agent and a preparation method thereof.
Background
The circulating cooling water system is used for improving the utilization rate of water and effectively saving water resources. However, as the circulating cooling water is continuously evaporated and concentrated, harmful ions in the water are multiplied, and the system can generate scaling, corrosion and microorganism breeding. This requires periodic cleaning of the circulating water system, which often requires the use of acid pickling agents. Most of the existing circulating water pickling agents use liquid inorganic acid or solid powder, the liquid inorganic acid has high requirements on corrosion inhibitors, the effect is single, the corrosion to equipment is high during use, and the solid powder has the defects of slow cleaning speed, poor effect and long general cleaning time.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide an acid cleaning agent which has low cost, can quickly and effectively remove calcium scale and corrosion products, accelerates the cleaning speed, can effectively inhibit the corrosion of metals by using a corrosion inhibitor, is nontoxic and phosphorus-free, is green and environment-friendly, and has stable performance. The acidic cleaning agent can be used for cleaning heat exchanger equipment such as an industrial circulating cooling water system and other circulating water systems.
The second purpose of the invention is to provide the preparation method of the acidic cleaning agent, the preparation method has the advantages of simple and easy operation process, low cost, no three-waste discharge, no generation of toxic gas in the preparation process, safety, greenness and environmental protection.
In order to achieve the technical purpose, the following technical scheme is adopted:
the invention provides an acidic cleaning agent which is mainly prepared from the following raw materials in parts by weight: 10-20 parts of sulfamic acid, 1-7 parts of inorganic salt, 10-20 parts of complexing agent, 1-6 parts of corrosion inhibitor and 0.1-0.7 part of surfactant.
Preferably, the acidic cleaning agent is mainly prepared from the following raw materials in parts by weight: 12-18 parts of sulfamic acid, 2-6 parts of inorganic salt, 12-18 parts of complexing agent, 2-5 parts of corrosion inhibitor and 0.2-0.6 part of surfactant.
Preferably, the acidic cleaning agent is mainly prepared from the following raw materials in parts by weight: 14-16 parts of sulfamic acid, 3-5 parts of inorganic salt, 14-16 parts of complexing agent, 3-4 parts of corrosion inhibitor and 0.3-0.5 part of surfactant.
Preferably, the acidic cleaning agent is mainly prepared from the following raw materials in parts by weight: 15 parts of sulfamic acid, 4 parts of inorganic salt, 15 parts of complexing agent, 3.5 parts of corrosion inhibitor and 0.4 part of surfactant.
Among the above raw materials, an aqueous solution of sulfamic acid has strong acidity equivalent to that of hydrochloric acid, sulfuric acid, etc., and it is characterized by non-volatility, no odor and little toxicity to the human body. The sulfamic acid cleaning agent has wide application range and can be used for cleaning boilers, condensers, heat exchangers, jackets and chemical pipelines. In the air conditioner, rust and scale in a cooling system and an evaporative condenser can be removed. Sulfamic acid is used as an excellent chemical cleaning medium, has good performance when being used for cleaning water scales with complex and indissolvable components, has the advantages of being unavailable by strong acid such as hydrochloric acid and the like, and is more economical and easier to operate. Because the sulfamic acid is solid, the sulfamic acid is convenient to transport, has high purity, is safe and economic, has wide application range, and must be widely applied in industrial cleaning practice. The reason why sulfamic acid is selected to be compounded with inorganic salt is that sulfamic acid is less corrosive, and the sulfamic acid can slowly generate hydrochloric acid by adding the inorganic salt, so that iron scale is effectively dissolved, and in addition, sulfamic acid is the only acid which can be used for cleaning galvanized metal surfaces.
In the raw materials, the main function of the inorganic salt is to compound with sulfamic acid, accelerate and strengthen the descaling capacity of the acid cleaning agent and slow down the corrosion speed to equipment. The complexing agent can improve the removal effect of the acidic cleaning agent on the corrosion products, and the corrosion inhibitor can prevent or slow down the corrosion speed of equipment materials. The surfactant has the physical properties of wetting or anti-sticking, foaming or defoaming, solubilization, dispersion, washing, corrosion prevention and antistatic, can prevent metal or metal oxide from sticking in the cleaning process, can make sulfamic acid, inorganic salt, complexing agent and corrosion inhibitor better dissolved in the solution, and can also effectively slow down the deterioration of the acidic cleaning agent.
Preferably, the inorganic salt is any one or more of sodium chloride, calcium chloride and potassium chlorate. The inorganic salt containing chloride ions is selected from the inorganic salt in the acid cleaning agent, because the influence of the chloride ions on metal corrosion is shown in two aspects, one is to reduce the possibility of forming a passivation film on the surface of equipment materials or accelerate the damage of the passivation film, and the other is to reduce the solubility of hydrogen chloride and carbon dioxide in a solution, thereby slowing down the corrosion of the equipment materials. The sulfamic acid water solution has slow action on the corrosion product of iron, and sodium chloride, calcium chloride or potassium chlorate can be added to slowly generate hydrochloric acid, so that iron scale is effectively dissolved.
Preferably, the corrosion inhibitor is any one or more of benzotriazole, thiobenzothiazole and alkynol. Benzotriazole has an anticorrosive effect on metals such as copper, aluminum, iron, nickel and the like. The hydrogen atoms on the sulfur radicals in the sulfur-based benzothiazole can be dissociated into hydrogen ions in aqueous solution, and the anions of the hydrogen ions are combined with copper ions to form a very firm complex, namely a protective film, which can prevent metals, particularly copper or copper alloys from being oxidized or corroded. The alkynol can be independently used as a corrosion inhibitor and can be compounded with potassium chloride, calcium chloride, potassium chlorate and other substances, so that the corrosion inhibition effect is better improved.
Preferably, the surfactant is any one or more of sodium alkyl benzene sulfonate, heavy alkyl benzene sulfonate and polyoxyethylene. Sodium alkyl benzene sulfonate as a surfactant is easy to oxidize, has strong foaming power and strong dirt-removing power, is easy to compound various auxiliary agents, and has lower cost. The heavy alkylbenzene sulfonate can be used as a cosolvent, so that the components of the acid cleaning agent are effectively blended. The polyoxyethylene has good water solubility, good intermiscibility with organic components, excellent lubricity, moisture retention and dispersibility, and can effectively dissolve all components of the acidic cleaning agent with water. The compounding of the surfactant and the inorganic salt can enable the inorganic salt to be better blended into the solution to be compounded with the sulfamic acid, so that the descaling effect of the invention is improved.
The invention also provides a preparation method of the acidic cleaning agent, which comprises the following steps:
(A) mixing and stirring sulfamic acid, inorganic salt and complexing agent at the temperature of 15-20 ℃ for 25-35 min;
(B) adding the corrosion inhibitor and the surfactant into the mixture and stirring the mixture at the temperature of between 25 and 35 ℃ for 25 to 35 minutes.
Compared with the prior art, the invention has the beneficial effects that:
(1) through the compounding of sulfamic acid and inorganic salt, the capability of removing calcium scale and rust products of the acidic cleaning agent is greatly enhanced, and the cleaning speed is accelerated;
(2) the corrosion inhibitor such as benzotriazole, sulfenyl benzothiazole and alkynol can effectively inhibit the corrosion of metal;
(3) the corrosion inhibitor of the invention does not contain phosphorus, avoids the problem of water eutrophication caused by the discharge of phosphorus, reduces the environmental pollution and has good environmental protection.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
The preparation method of the acidic cleaning agent comprises the following steps:
(1) the formula comprises the following components, by weight, 10 parts of sulfamic acid, 7 parts of sodium chloride, 10 parts of sodium citrate, 6 parts of benzotriazole and 0.7 part of sodium alkyl benzene sulfonate.
(2) Firstly, mixing and stirring sulfamic acid, sodium chloride and sodium citrate in a stirring kettle, controlling the temperature at 15 ℃ and the stirring time at 30 min;
(3) then, the benzotriazole and the sodium alkyl benzene sulfonate are also put into a stirring kettle to be mixed and stirred, the temperature is controlled at 30 ℃, and the stirring time is controlled at 30 min;
(4) after the stirring was stopped, the mixture was poured out to obtain an acidic cleaning agent of the present invention.
Example 2
The preparation method of the acidic cleaning agent comprises the following steps:
(1) the composition comprises, by weight, 20 parts of sulfamic acid, 1 part of calcium chloride, 20 parts of thiosulfate, 1 part of thiobenzothiazole and 0.1 part of heavy alkylbenzene sulfonate.
(2) Firstly, sulfamic acid, calcium chloride and thiosulfate are put into a stirring kettle to be mixed and stirred, the temperature is controlled to be 15 ℃, and the stirring time is controlled to be 30 min;
(3) then putting the sulfenyl benzothiazole and the heavy alkylbenzene sulfonate into a stirring kettle to be mixed and stirred, wherein the temperature is controlled at 30 ℃, and the stirring time is controlled at 30 min;
(4) after the stirring was stopped, the product was poured out obliquely to obtain the acidic cleaning agent of the present invention.
Example 3
The preparation method of the acidic cleaning agent comprises the following steps:
(1) the components are calculated according to the following parts by weight, 12 parts of sulfamic acid, 6 parts of chlorate, 12 parts of sodium sulfite, 5 parts of alkynol and 0.6 part of polyoxyethylene.
(2) Firstly, sulfamic acid, chlorate and sodium sulfite are put into a stirring kettle to be mixed and stirred, the temperature is controlled at 15 ℃, and the stirring time is controlled at 30 min;
(3) then putting the alkynol and the polyoxyethylene into a stirring kettle to be mixed and stirred, controlling the temperature at 30 ℃ and the stirring time at 30 min;
(4) after the stirring was stopped, the product was poured out obliquely to obtain the acidic cleaning agent of the present invention.
Example 4
The preparation method of the acidic cleaning agent comprises the following steps:
(1) the formula comprises the following components, by weight, 18 parts of sulfamic acid, 2 parts of potassium chlorate, 18 parts of sodium citrate, 2 parts of alkynol and 0.2 part of sodium alkyl benzene sulfonate.
(2) Firstly, sulfamic acid, potassium chlorate and sodium citrate are put into a stirring kettle to be mixed and stirred, the temperature is controlled to be 15 ℃, and the stirring time is controlled to be 25 min;
(3) then putting the alkynol and the sodium alkyl benzene sulfonate into a stirring kettle to be mixed and stirred, controlling the temperature at 35 ℃ and the stirring time at 35 min;
(4) after the stirring was stopped, the product was poured out obliquely to obtain the acidic cleaning agent of the present invention.
Example 5
The preparation method of the acidic cleaning agent comprises the following steps:
(1) the composition comprises, by weight, 14 parts of sulfamic acid, 5 parts of potassium chlorate, 14 parts of thiosulfate, 4 parts of alkynol and 0.5 part of heavy alkylbenzene sulfonate.
(2) Firstly, sulfamic acid, potassium chlorate and thiosulfate are put into a stirring kettle to be mixed and stirred, the temperature is controlled to be 15 ℃, and the stirring time is controlled to be 35 min;
(3) then putting the alkynol and the heavy alkylbenzene sulfonate into a stirring kettle together for mixing and stirring, wherein the temperature is controlled at 25 ℃, and the stirring time is controlled at 25 min;
(4) after the stirring was stopped, the product was poured out obliquely to obtain the acidic cleaning agent of the present invention.
Example 6
The preparation method of the acidic cleaning agent comprises the following steps:
(1) the composition comprises the following components, by weight, 16 parts of sulfamic acid, 3 parts of potassium chlorate, 16 parts of sodium citrate, 3 parts of sulfobenzothiazole and 0.3 part of heavy alkylbenzene sulfonate.
(2) Firstly, sulfamic acid, potassium chlorate and sodium citrate are put into a stirring kettle to be mixed and stirred, the temperature is controlled to be 20 ℃, and the stirring time is controlled to be 25 min;
(3) then putting the sulfenyl benzothiazole and the heavy alkylbenzene sulfonate into a stirring kettle to be mixed and stirred, wherein the temperature is controlled to be 35 ℃, and the stirring time is controlled to be 35 min.
(4) After the stirring was stopped, the product was poured out obliquely to obtain the acidic cleaning agent of the present invention.
Example 7
The preparation method of the acidic cleaning agent comprises the following steps:
(1) the formula comprises the following components, by weight, 15 parts of sulfamic acid, 4 parts of sodium chloride, 15 parts of sodium citrate, 3.5 parts of alkynol and 0.4 part of sodium alkyl benzene sulfonate.
(2) Firstly, mixing and stirring sulfamic acid, sodium chloride and sodium citrate in a stirring kettle, controlling the temperature at 15 ℃ and the stirring time at 30 min;
(3) then putting the alkynol and the sodium alkyl benzene sulfonate into a stirring kettle together for mixing and stirring, wherein the temperature is controlled at 30 ℃ during stirring, and the stirring time is controlled at 30 min.
(4) After the stirring was stopped, the product was poured out obliquely to obtain the acidic cleaning agent of the present invention.
Comparative example 1
The other steps of this comparative example were the same as those of example 7 except that no inorganic salt was added.
Comparative example 2
The comparative example was conducted as in example 7 except that no complexing agent was added.
Comparative example 3
The other steps of this comparative example were the same as those of example 7 except that sulfamic acid was changed to hydrochloric acid.
Comparative example 4
The comparative example was conducted as in example 7 except that no corrosion inhibitor was added.
Comparative example 5
The other steps of this comparative example were the same as those of example 7 except that no surfactant was added.
Test results of descaling test
Weighing about 2 g of scale sample, placing the scale sample into a beaker filled with 50ml of acid cleaning agent, stirring for 2 hours at normal temperature, filtering by using quantitative filter paper, drying for 2 hours at 105 ℃ to constant weight, weighing the mass after filtering and drying, and calculating the scale removal rate%. The raw materials of the components of the above examples are all commercial industrial products.
The above examples 1-7 and comparative examples 1-5 were subjected to comparative tests, and the evaluation standards were determined according to the HG-T2387-:
table 1 shows the results of the scale removal test
By comparing example 7 with comparative example 1 in table 1 above, the scale removal rate of the present invention is reduced without adding an inorganic salt under the same amount of other components; by comparing example 7 with comparative example 2 in table 1 above, the scale removal rate of the present invention is reduced without adding a complexing agent under the same amount of other components; by comparing example 7 with comparative example 5 in table 1 above, the absence of surfactant reduces the rate of scale removal according to the invention at the same level of the other components.
Test results of corrosion inhibition test
And weighing and recording the processed 20# carbon steel, stainless steel and copper hanging pieces, respectively placing the hanging pieces in 0.1% cleaning solution, keeping the temperature for 48 hours, taking out the hanging pieces, processing, weighing, and respectively calculating the corrosion rate. The raw materials of the components of the above examples are all commercial industrial products.
The above examples 1-7 and comparative examples 1-5 were subjected to comparative tests, and the evaluation standards were determined according to the HG-T2387-:
table 2 shows the results of the corrosion inhibition test
By comparison of example 7 with comparative example 3, table 2 above, the replacement of sulfamic acid for hydrochloric acid accelerates the corrosion rate of the metal or metal oxide; by comparing example 7 with comparative example 4 in table 2 above, the corrosion rate of the metal or metal oxide is increased without adding a corrosion inhibitor.
Combining table 1 and table 2 above, it can be concluded that the present invention has good scale removal rate and metal corrosion rate, because the combination of the components, and replacement or removal of one of the components will affect the effect of the present invention.
In a word, the acidic cleaning agent greatly enhances the capability of removing calcium scale and corrosion products, accelerates the cleaning speed, effectively inhibits the corrosion of metal and has good environmental protection property by compounding the components.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (10)
1. The acidic cleaning agent for the circulating water system is characterized by being mainly prepared from the following raw materials in parts by weight: 10-20 parts of sulfamic acid, 1-7 parts of inorganic salt, 10-20 parts of complexing agent, 1-6 parts of corrosion inhibitor and 0.1-0.7 part of surfactant.
2. The acidic cleaning agent according to claim 1, which is prepared from the following raw materials in parts by weight: 12-18 parts of sulfamic acid, 2-6 parts of inorganic salt, 12-18 parts of complexing agent, 2-5 parts of corrosion inhibitor and 0.2-0.6 part of surfactant.
3. The acidic cleaning agent according to claim 1, which is prepared from the following raw materials in parts by weight: 14-16 parts of sulfamic acid, 3-5 parts of inorganic salt, 14-16 parts of complexing agent, 3-4 parts of corrosion inhibitor and 0.3-0.5 part of surfactant.
4. The acidic cleaning agent according to claim 1, which is prepared from the following raw materials in parts by weight: 15 parts of sulfamic acid, 4 parts of inorganic salt, 15 parts of complexing agent, 3.5 parts of corrosion inhibitor and 0.4 part of surfactant.
5. An acidic cleaning agent according to any one of claims 1 to 4, wherein the inorganic salt is any one or more of sodium chloride, calcium chloride and potassium chlorate.
6. The acidic cleaning agent according to any one of claims 1 to 4, wherein the complexing agent is any one or more of sodium citrate, thiosulfate and sodium sulfite.
7. The acidic cleaning agent according to any one of claims 1 to 4, wherein the corrosion inhibitor is any one or more of benzotriazole, thiobenzothiazole and alkynol.
8. An acidic cleaning agent according to any one of claims 1 to 4, wherein said surfactant is any one or more of sodium alkyl benzene sulfonate, heavy alkyl benzene sulfonate and polyoxyethylene.
9. A method for preparing an acidic cleaning agent according to claims 1-8, comprising the steps of:
(A) mixing and stirring sulfamic acid, inorganic salt and complexing agent;
(B) adding the corrosion inhibitor and the surfactant into the mixture and stirring the mixture.
10. The method for preparing the acidic cleaning agent according to claim 9, wherein the mixing and stirring temperature of the sulfamic acid, the inorganic salt and the complexing agent is 15-20 ℃, and the stirring time is 25-35 min;
the stirring temperature after adding the corrosion inhibitor and the surfactant is 25-35 ℃, and the stirring time is 25-35 min.
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| CN202011559047.3A CN112725813A (en) | 2020-12-25 | 2020-12-25 | Acidic cleaning agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011559047.3A CN112725813A (en) | 2020-12-25 | 2020-12-25 | Acidic cleaning agent and preparation method thereof |
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| CN112725813A true CN112725813A (en) | 2021-04-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113736574A (en) * | 2021-09-27 | 2021-12-03 | 北京中铁富红企业管理有限责任公司 | Cleaning agent for cleaning bullet train, preparation method of cleaning agent and bullet train cleaning method |
| CN114032534A (en) * | 2021-11-02 | 2022-02-11 | 江苏嘉宏新材料有限公司 | Passivating agent for hydrogen peroxide device before driving and preparation and application methods thereof |
| CN114086191A (en) * | 2021-11-11 | 2022-02-25 | 浙江福达合金材料科技有限公司 | Soaking agent for preventing copper from being adhered to surface of rivet electrical contact and application of soaking agent |
| CN115386434A (en) * | 2022-07-14 | 2022-11-25 | 广州市人和清洗有限公司 | Bi-component cleaning agent for cleaning pipeline and preparation method thereof |
| CN115820344A (en) * | 2022-12-05 | 2023-03-21 | 四川大学 | Environment-friendly strong-acid chemical cleaning agent and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074635A (en) * | 2013-01-05 | 2013-05-01 | 辽宁省电力有限公司电力科学研究院 | Metal surface cleaning anti-scaling agent containing compound acid |
| CN103642612A (en) * | 2013-12-09 | 2014-03-19 | 成都民航六维航化有限责任公司 | Cleaning agent for aircraft pipelines and preparation method thereof |
| CN110127866A (en) * | 2018-02-09 | 2019-08-16 | 上海九虹化学制品有限公司 | Circulation multifunctional solid acidic cleaner and preparation method thereof |
-
2020
- 2020-12-25 CN CN202011559047.3A patent/CN112725813A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074635A (en) * | 2013-01-05 | 2013-05-01 | 辽宁省电力有限公司电力科学研究院 | Metal surface cleaning anti-scaling agent containing compound acid |
| CN103642612A (en) * | 2013-12-09 | 2014-03-19 | 成都民航六维航化有限责任公司 | Cleaning agent for aircraft pipelines and preparation method thereof |
| CN110127866A (en) * | 2018-02-09 | 2019-08-16 | 上海九虹化学制品有限公司 | Circulation multifunctional solid acidic cleaner and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113736574A (en) * | 2021-09-27 | 2021-12-03 | 北京中铁富红企业管理有限责任公司 | Cleaning agent for cleaning bullet train, preparation method of cleaning agent and bullet train cleaning method |
| CN114032534A (en) * | 2021-11-02 | 2022-02-11 | 江苏嘉宏新材料有限公司 | Passivating agent for hydrogen peroxide device before driving and preparation and application methods thereof |
| CN114086191A (en) * | 2021-11-11 | 2022-02-25 | 浙江福达合金材料科技有限公司 | Soaking agent for preventing copper from being adhered to surface of rivet electrical contact and application of soaking agent |
| CN115386434A (en) * | 2022-07-14 | 2022-11-25 | 广州市人和清洗有限公司 | Bi-component cleaning agent for cleaning pipeline and preparation method thereof |
| CN115820344A (en) * | 2022-12-05 | 2023-03-21 | 四川大学 | Environment-friendly strong-acid chemical cleaning agent and application thereof |
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