CN114262070A - Phosphorus-free corrosion and scale inhibitor and preparation method and application thereof - Google Patents

Phosphorus-free corrosion and scale inhibitor and preparation method and application thereof Download PDF

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Publication number
CN114262070A
CN114262070A CN202111637847.7A CN202111637847A CN114262070A CN 114262070 A CN114262070 A CN 114262070A CN 202111637847 A CN202111637847 A CN 202111637847A CN 114262070 A CN114262070 A CN 114262070A
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phosphorus
scale inhibitor
acid
inhibitor
corrosion
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杨恒修
邓明森
何雪
沈虎峻
邹雪锋
李付绍
武青青
陈令
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Guizhou Education University
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Guizhou Education University
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Priority to NL2032834A priority patent/NL2032834B1/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
    • C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023—Water in cooling circuits
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/08—Corrosion inhibition
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

The invention provides a phosphorus-free corrosion and scale inhibitor and a preparation method and application thereof, belonging to the technical field of industrial water treatment. The invention limits the special proportion of the dispersant, the scale inhibitor and the water-soluble zinc salt, can reduce the surface defects of the protective film formed on the metal surface, make the protective film more uniform and compact, and keep the stability in a wider water quality range, thereby leading the non-phosphorus corrosion and scale inhibitor to be used in a wide water quality range, even in cooling water with water wave fluctuation and process leakage.

Description

Phosphorus-free corrosion and scale inhibitor and preparation method and application thereof
Technical Field
The invention relates to the technical field of industrial water treatment, in particular to a phosphorus-free corrosion and scale inhibitor and a preparation method and application thereof.
Background
The operation of the circulating cooling water system must solve three problems of corrosion, scaling and deposition and microorganisms. At present, chemical treatment is an important means for solving the three problems, and various medicaments such as corrosion inhibitor, scale inhibitor, bactericide and the like are continuously added into a system in the running process of cooling water so as to prevent corrosion, scaling, deposition and microorganism problems and ensure the stable and efficient running of a cooling water system. Most of the currently used medicaments contain phosphorus, and phosphorus can cause eutrophication of water bodies, so that comprehensive non-phosphating treatment of cooling water is a necessary trend. Therefore, the application water quality range of the phosphorus-free corrosion and scale inhibition technology should be as wide as possible, and the water quality (low, medium and high-hardness, alkalinity, chloride ions, conductivity and the like) in most regions from south to north in China needs to be covered.
In addition, the annual industrial water consumption of China is about 1300 hundred million tons, the water consumption of circulating cooling water accounts for about 75 percent of the industrial water consumption and is close to 1000 hundred million tons, and a circulating cooling water system is an important water-saving engine. At present, two main ways for saving water of circulating cooling water are provided, namely, the concentration multiple of the running of a cooling water system is increased on the basis of the prior art, and the water consumption and the sewage discharge of the cooling water system are directly reduced; and secondly, reuse water, such as water used in other process links, is used as much as possible, or industrial wastewater is simply treated and directly used as cooling water for replenishing water to be reused in a cooling water system. In actual industrial production, in the face of increasingly strict water use management and control and huge water saving pressure, enterprises prefer to simultaneously carry out two ways so as to achieve the aim of double water saving. Thus, a single source of makeup water with a stable quality may be used in less and less situations for cooling water. Increasing the concentration factor on the existing basis increases the control difficulty of cooling water treatment, may accelerate corrosion of system pipelines and equipment, and promotes scaling and breeding of microorganisms; the water quality of the supplemented water is various in source and changeable, so that the water quality of the cooling water is likely to fluctuate frequently, and various conditions such as low-hardness water quality, abnormal pH fluctuation or high chloride ion conductivity and the like occur in a certain time period, so that uncertainty and difficulty are increased for the control of cooling water treatment. From the long-term operation, the water quality of the circulating cooling water system is difficult to be in a certain stable water quality condition, and the water quality condition can be wider and more severe. In addition, in the chemical industry, the metallurgy industry, the petrochemical industry and the like, the process side leakage conditions such as acid leakage, oil leakage, ammonia leakage and the like often occur, so that the water quality is more uncertain, and the treatment difficulty of the circulating cooling water treatment is improved. Therefore, the phosphorus-free corrosion and scale inhibition technology also needs to deal with the technical challenges of cooling water treatment caused by various water quality and water quality fluctuation.
At present, related phosphorus-free corrosion and scale inhibition technologies are applied to the field of circulating cooling water, for example, patent CN103523936A discloses a phosphorus-free corrosion and scale inhibitor for water with ultralow hardness, patent CN109019883A discloses a phosphorus-free corrosion and scale inhibition scheme for circulating cooling water which can be used for industrial sewage as water supplement, patent CN103673765A discloses a phosphorus-free corrosion and scale inhibition scheme for circulating cooling water of a central air conditioning system, and patent CN105314743A discloses a phosphorus-free corrosion and scale inhibitor for water with negative hardness. However, the phosphorus-free corrosion and scale inhibition technology disclosed in the prior art can only achieve a good treatment effect on certain specific water quality, and the application conditions of the technology cannot cover a wide water quality range (such as the technology can be used in low, medium and high-hardness water, alkalinity, chloride ions and conductivity), and cannot cope with various sources of water quality of supplemented water, complex water quality, process leakage and long-term fluctuation of water quality, so that the technology brings challenges to comprehensive phosphorus-free treatment of cooling water, and affects the phosphorus-free process of the cooling water.
Disclosure of Invention
The invention aims to provide a phosphorus-free corrosion and scale inhibitor, a preparation method and application thereof, wherein the phosphorus-free corrosion and scale inhibitor can be applied to wide water quality (low-medium-hardness, high-hardness, alkalinity, chloride ions and conductivity), can also be applied to a cooling water system with various sources of water supplementing water quality, complex water quality, process leakage and long-term fluctuation of water quality, has good universality and can be prepared into two forms of liquid and solid.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a phosphorus-free corrosion and scale inhibitor, which comprises a dispersant, a scale inhibitor and a phosphorus-free corrosion inhibitor; the non-phosphorus corrosion inhibitor comprises a carbon steel corrosion inhibitor; the carbon steel corrosion inhibitor comprises water-soluble zinc salt; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1 (0.033-30); the ratio of the total mass of the effective active substances of the dispersing agent and the scale inhibitor to the mass of the effective active substances of the phosphorus-free corrosion inhibitor is 1 (0.00167-10).
Preferably, the dispersant comprises a water-soluble carboxylic acid polymer comprising a water-soluble carboxylic acid homopolymer or a water-soluble carboxylic acid copolymer; the polymeric monomer of the water-soluble carboxylic acid homopolymer comprises acrylic acid, maleic anhydride, itaconic acid or methacrylic acid; the polymerization monomer of the water-soluble carboxylic acid copolymer comprises two or more of acrylic acid, maleic anhydride, itaconic acid and methacrylic acid, or the polymerization monomer of the water-soluble carboxylic acid copolymer comprises a first polymerization monomer and a second polymerization monomer, wherein the first polymerization monomer comprises one or more of acrylic acid, maleic anhydride, itaconic acid and methacrylic acid; the second polymerization monomer comprises one or more of acrylamide, allyl sulfonic acid and 2-acrylamide-2 methyl propane sulfonic acid monomers;
the scale inhibitor comprises water-soluble carboxylic acid compounds; the water-soluble carboxylic acid compounds comprise one or more of polymaleic acid, polymethacrylic acid, polyacrylic acid, polyepoxysuccinic acid and polyaspartic acid.
Preferably, the water-soluble zinc salt comprises one or more of zinc chloride, zinc sulfate, zinc nitrate and zinc acetate;
the carbon steel corrosion inhibitor also comprises rare earth metal salt, wherein the rare earth metal salt comprises one or more of cerium chloride, cerium sulfate, cerium nitrate, lanthanum chloride, lanthanum sulfate, lanthanum nitrate, yttrium chloride, yttrium sulfate, yttrium nitrate, praseodymium chloride, praseodymium sulfate, praseodymium nitrate, neodymium chloride, neodymium sulfate, neodymium nitrate, samarium chloride, samarium sulfate and samarium nitrate;
the phosphorus-free corrosion inhibitor also comprises a copper corrosion inhibitor, wherein the copper corrosion inhibitor comprises azole compounds, and the azole compounds comprise one or more of 2-mercaptobenzothiazole, benzotriazole, methylbenzotriazole, chloromethylbenzotriazole and 5-butyl-1H-benzotriazole (5-butyl-benzotriazole).
Preferably, the kit further comprises a fluorescent tracer; the fluorescent tracer is pyrene sulfonate; the mass ratio of the total mass of the effective active substances of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1 (0-0.48).
Preferably, the disinfectant also comprises bactericide; the germicide comprises a non-oxidative germicide; the non-oxidizing bactericide comprises one or more of chlorophenol bactericide, quaternary ammonium salt bactericide, isothiazolinone bactericide, amide bactericide, organic sulfur compound bactericide and glutaraldehyde; the mass ratio of the total mass of the effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the mass of the effective active matters in the bactericide is 1 (0-1.43).
Preferably, water is also included.
Preferably, the solid acid comprises one or more of solid organic carboxylic acid, solid organic sulfonic acid, bisulfate and sulfamic acid; the solid organic carboxylic acid comprises one or more of tartaric acid, citric acid, malic acid, succinic acid, adipic acid and glycolic acid; the solid organic sulfonic acid comprises benzenesulfonic acid or p-toluenesulfonic acid; the mass ratio of the total mass of effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the solid acid is 1 (0-23.8).
The invention provides a preparation method of the phosphorus-free corrosion and scale inhibitor in the technical scheme, which comprises the following steps:
mixing the dispersant, the scale inhibitor and the non-phosphorus corrosion inhibitor to obtain the non-phosphorus corrosion and scale inhibitor.
Preferably, when the phosphorus-free corrosion and scale inhibitor further comprises water, the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
mixing the dispersant and the scale inhibitor, and adding the phosphorus-free corrosion inhibitor and water into the mixture to obtain the liquid phosphorus-free corrosion and scale inhibitor.
Preferably, when the phosphorus-free corrosion and scale inhibitor further comprises a solid acid and a bactericide, the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
drying the liquid raw materials in the phosphorus-free corrosion and scale inhibitor to obtain solid particles; the particle size of the solid particles is 10-3000 mu m;
mixing the solid particles with solid raw materials in the phosphorus-free corrosion and scale inhibitor, and pressing to obtain the solid phosphorus-free corrosion and scale inhibitor;
or, when the bactericide is a liquid raw material, the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
drying other liquid raw materials which do not comprise a bactericide in the phosphorus-free corrosion and scale inhibitor to obtain solid particles; the particle size of the solid particles is 10-3000 mu m;
and mixing the solid particles with solid raw materials in the phosphorus-free corrosion and scale inhibitor, adding a bactericide in the mixing process, and pressing to obtain the solid phosphorus-free corrosion and scale inhibitor.
Preferably, the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
mixing a dispersing agent and a scale inhibitor, and adding a phosphorus-free corrosion inhibitor and water into the obtained mixture to obtain a liquid phosphorus-free corrosion and scale inhibitor;
and drying the liquid phosphorus-free corrosion and scale inhibitor to obtain the solid phosphorus-free corrosion and scale inhibitor.
The invention provides the application of the phosphorus-free corrosion and scale inhibitor in the technical scheme or the phosphorus-free corrosion and scale inhibitor prepared by the preparation method in the technical scheme in a circulating cooling water system.
The invention uses water-soluble zinc salt as a non-phosphorus corrosion inhibitor to promote the formation of a dynamic protective film on the surface of metal and isolate a metal matrix and a corrosion medium so as to achieve the purpose of corrosion inhibition, the formed protective film has excellent uniformity, density and stability, the corrosion inhibition effect can be improved, and the concentration of active zinc ions in water is the key for maintaining the dynamic protective film. The invention utilizes the dispersing agent and the antisludging agent to exert the functions of dispersing, stabilizing and chelating zinc ions, so that the concentration of active zinc ions is kept in an optimal range, and the special proportion of the dispersing agent, the antisludging agent and the water-soluble zinc salt is limited, so that the surface defects of a protective film formed on the metal surface can be reduced, the protective film is more uniform and compact, and the stability can be kept in a wider water quality range, and the phosphorus-free corrosion and antisludging agent can be used in a wide water quality range and even can be used in cooling water with water wave fluctuation and process leakage.
Furthermore, the rare earth metal salt is used as the carbon steel corrosion inhibitor, and the rare earth metal salt is easy to preferentially deposit at the defect of the zinc salt protective film to form hydroxide or oxide of the rare earth metal by keeping the proportion of the rare earth metal salt and the water-soluble zinc salt, so that the micro defect of the protective film is further filled, the density and the uniformity of the protective film are further improved, the protective film is more stable, and the performance of the phosphorus-free corrosion and scale inhibitor is improved.
The phosphorus-free corrosion and scale inhibitor provided by the invention can be applied to a wider range of water quality conditions (low and medium alkalinity, hardness, chloride ions, conductivity and the like), and can also be applied to a cooling water system with water quality fluctuation, such as unstable water replenishing source, complex water quality, process side leakage and the like.
Furthermore, the phosphorus-free corrosion and scale inhibitor can be prepared into liquid and solid forms. Especially, compared with liquid, the solid phosphorus-free corrosion and scale inhibitor has the advantages that the volume and the weight of the solid phosphorus-free corrosion and scale inhibitor are reduced by only 80 percent, the transportation cost and the storage space of a cooling water site can be greatly saved, the site cleanliness is improved, a dangerous container packaging material (the packaging material of a liquid product is generally high-density polyethylene (HDPE)) is not needed, and after the solid phosphorus-free corrosion and scale inhibitor is used, dangerous solid waste is not generated, so that the solid phosphorus-free corrosion and scale inhibitor is safer and more environment-friendly. The two product forms can be selected according to the comprehensive consideration of the field condition of the cooling water.
Drawings
FIG. 1 is a drawing showing a carbon steel coupon after the end of the test of application example 3.
Detailed Description
The invention provides a phosphorus-free corrosion and scale inhibitor, which comprises a dispersant, a scale inhibitor and a phosphorus-free corrosion inhibitor; the non-phosphorus corrosion inhibitor comprises a carbon steel corrosion inhibitor; the carbon steel corrosion inhibitor comprises water-soluble zinc salt; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1 (0.033-30); the ratio of the total mass of the effective active substances of the dispersing agent and the scale inhibitor to the mass of the effective active substances of the phosphorus-free corrosion inhibitor is 1 (0.00167-10).
In the present invention, the starting materials or reagents required are commercially available products well known to those skilled in the art unless otherwise specified.
The effective active substances of the invention all represent effective components which play a practical role.
The phosphorus-free corrosion and scale inhibitor provided by the invention comprises a dispersant. In the present invention, the dispersant preferably includes a water-soluble carboxylic acid-based polymer, which preferably includes a water-soluble carboxylic acid-based homopolymer or a water-soluble carboxylic acid-based copolymer; the polymeric monomer of the water-soluble carboxylic acid homopolymer preferably comprises acrylic acid, maleic anhydride, itaconic acid or methacrylic acid; the water-soluble carboxylic acid homopolymer is preferably polyacrylic acid, polymethacrylic acid or polymaleic acid.
In the present invention, the polymerized monomers of the water-soluble carboxylic acid copolymer preferably include two or more of acrylic acid, maleic anhydride, itaconic acid and methacrylic acid, or the polymerized monomers of the water-soluble carboxylic acid copolymer preferably include a first polymerized monomer and a second polymerized monomer, the first polymerized monomer includes one or more of acrylic acid, maleic anhydride, itaconic acid and methacrylic acid; the second polymeric monomer preferably comprises one or more of acrylamide, allyl sulfonic acid and 2-acrylamide-2-methyl propane sulfonic acid monomers; the water-soluble carboxylic acid copolymer is preferably acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA/AMPS).
When the dispersant is two or more than two of the above, the proportion of the water-soluble carboxylic acid polymer is not particularly limited, and the water-soluble carboxylic acid polymer can be prepared in any proportion.
In the invention, the dispersant plays a role in dispersing various ions and suspended matters in the circulating cooling water, preventing the ions and the suspended matters from agglomerating and depositing in the water, and also plays a role in stabilizing corrosion-inhibition type substances and improving the ion stability and the activity of the corrosion-inhibition type substances in the water.
The phosphorus-free corrosion and scale inhibitor provided by the invention comprises a scale inhibitor; the scale inhibitor preferably comprises a water-soluble carboxylic acid compound; the water-soluble carboxylic acid compounds preferably comprise one or more of polyacrylic acid (PAA), polymethacrylic acid (PMAA), polymaleic acid (HPMA), polyepoxysuccinic acid (PESA) and Polyaspartic Acid (PASP); when the water-soluble carboxylic acid compounds are two or more of the above, the ratio of the water-soluble carboxylic acid compounds of different types is not particularly limited, and any ratio may be used.
In the invention, the scale inhibitor plays a role in inhibiting the formation of hard scale (such as calcium carbonate, calcium sulfate, magnesium hydroxide, magnesium silicate and other scales), and besides the scale inhibition function, the scale inhibitor also can play a role in stabilizing or chelating corrosion inhibition substances such as zinc salt and/or rare earth metal salt in cooling water, so that the corrosion inhibition substances can keep higher activity.
In the invention, the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1 (0.033-30), preferably 1 (0.2-5), more preferably 1 (1-5), further preferably 1 (1.5-2.25), and further preferably 1 (1.88-2).
The phosphorus-free corrosion and scale inhibitor provided by the invention comprises a phosphorus-free corrosion inhibitor; the non-phosphorus corrosion inhibitor comprises a carbon steel corrosion inhibitor.
In the present invention, the carbon steel corrosion inhibitor includes a water-soluble zinc salt. In the present invention, the water-soluble zinc salt preferably includes one or more of zinc chloride, zinc sulfate, zinc nitrate and zinc acetate, more preferably zinc chloride or zinc chloride hydrate; when the water-soluble zinc salt is two or more than two of the above, the proportion of different water-soluble zinc salts is not specially limited, and any proportion can be adopted.
In the invention, the carbon steel corrosion inhibitor also comprises a rare earth metal salt, and the mass ratio of the effective active substance in the water-soluble zinc salt to the effective active substance in the rare earth metal salt is 1 (0-30), preferably 1 (0.01-2), more preferably 1 (0.0667-0.5), and further preferably 1 (0.3-0.5). In the invention, the rare earth metal salt preferably comprises one or more of cerium chloride, cerium sulfate, cerium nitrate, lanthanum chloride, lanthanum sulfate, lanthanum nitrate, yttrium chloride, yttrium sulfate, yttrium nitrate, praseodymium chloride, praseodymium sulfate, praseodymium nitrate, neodymium chloride, neodymium sulfate, neodymium nitrate, samarium chloride, samarium sulfate and samarium nitrate; more preferably one or more of cerium chloride, lanthanum chloride and yttrium chloride; when the rare earth metal salts are two or more of the above, the proportion of different kinds of rare earth metal salts is not specially limited, and the proportion can be any.
In the invention, the non-phosphorus corrosion inhibitor preferably further comprises a copper corrosion inhibitor, the copper corrosion inhibitor preferably comprises azole compounds, and the azole compounds comprise one or more of 2-mercaptobenzothiazole, benzotriazole, methylbenzotriazole, chloromethylbenzotriazole and 5-butyl-1H-benzotriazole (5-butyl-benzotriazole); more preferably one or more of benzotriazole, chloromethylbenzotriazole and 5-butyl-1H-benzotriazole (5-butyl-benzotriazole). When the azole compounds are two or more of the above, the ratio of the azole compounds of different kinds is not particularly limited, and any ratio may be used.
In the invention, the mass ratio of the effective active matter in the carbon steel corrosion inhibitor to the copper corrosion inhibitor is preferably 1: (0 to 50), preferably 1: (0.02 to 5.6), more preferably 1: (0.333-5.6), and more preferably 1 (0.625-0.857).
In the invention, the copper corrosion inhibitor is used for inhibiting the corrosion of copper and copper alloy, and the carbon steel corrosion inhibitor is used for inhibiting the corrosion of iron-based materials such as carbon steel, stainless steel and the like.
In the invention, the ratio of the total mass of the effective active matters of the dispersing agent and the scale inhibitor to the mass of the effective active matters of the phosphorus-free corrosion inhibitor is preferably 1 (0.00167-10), preferably 1 (0.021-1.33), more preferably 1 (0.0075-1.42), and further preferably 1 (0.1-0.2).
In the present invention, the phosphorus-free corrosion and scale inhibitor preferably further comprises a fluorescent tracer; the fluorescent tracer is preferably pyrene sulfonate; the pyrene sulfonic acid salt is preferably 1,3,6, 8-pyrenetetrasulfonic acid tetrasodium salt (PTSA).
In the invention, the mass ratio of the total mass of effective active matters of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is preferably 1 (0-0.48), more preferably 1 (0.00426-0.47), and further preferably 1 (0.0075-0.15).
In the invention, the fluorescent tracer is used for accurately measuring the concentration of the phosphorus-free corrosion and scale inhibitor, so that the accurate addition of the medicament according to the requirement can be realized, the extensive addition mode of the medicament is eliminated, and the addition precision of the medicament is improved.
In the present invention, the phosphorus-free corrosion and scale inhibitor preferably further comprises a bactericide; the biocide preferably comprises a non-oxidative biocide; the non-oxidizing bactericide preferably comprises one or more of chlorophenol bactericide, quaternary ammonium salt bactericide, isothiazolinone bactericide, amide bactericide, organic sulfur compound bactericide and glutaraldehyde; more preferably isothiazolinone bactericides and amide bactericides; the chlorophenol fungicide is preferably one or more of dichlorophen, trichlorophenol and pentachlorophenol; the quaternary ammonium salt bactericide is preferably one or more of dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide and dodecyl trimethyl ammonium chloride; the isothiazolinone bactericide is preferably 2-methyl-4-isothiazolin-3-one and/or 5-chloro-2-methyl-4-isothiazolin-3-one; the amide bactericide is preferably brominated propionamide, and the brominated propionamide is preferably 2, 2-dibromo-3 nitrilopropionamide (DBNPA); the organic sulfur compound bactericide is preferably methyl dithiocyanate; when the bactericide is two or more of the above, the proportion of the bactericide of different types is not particularly limited, and the bactericide can be prepared in any proportion.
In the invention, the bactericide mainly plays a role in inhibiting the breeding of microorganisms of the phosphorus-free corrosion and scale inhibitor and prolonging the shelf life of the phosphorus-free corrosion and scale inhibitor, and in addition, the bactericide ensures that the phosphorus-free corrosion and scale inhibitor also has a certain sterilization effect on cooling water.
In the invention, the mass ratio of the total mass of the effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the mass of the effective active matters in the bactericide is 1 (0-1.43), more preferably 1 (0.0015-0.15), and further preferably 1 (0.0137-0.038).
As a preferred scheme of the invention, the phosphorus-free corrosion and scale inhibitor preferably also comprises water, and the invention has no special limitation on the dosage of the water and can form the liquid phosphorus-free corrosion and scale inhibitor.
As a preferred embodiment of the present invention, the phosphorus-free corrosion and scale inhibitor preferably further comprises a solid acid, wherein the solid acid preferably comprises one or more of a solid organic carboxylic acid, a solid organic sulfonic acid, a hydrogen sulfate salt and an sulfamic acid, and the solid organic carboxylic acid preferably comprises one or more of tartaric acid, citric acid, malic acid, succinic acid, adipic acid and glycolic acid; the solid organic sulfonic acid comprises benzenesulfonic acid or p-toluenesulfonic acid; the bisulfate salt is preferably sodium bisulfate or potassium bisulfate. In the invention, when the solid acids are any two or more than two of the above solid acids, the proportion of different types of solid acids is not particularly limited, and any proportion can be adopted; more preferably, the solid acid is citric acid, hydrogen sulfate or sulfamic acid.
In the present invention, the solid acid functions as: the phosphate-free corrosion and scale inhibitor is used as an acidic substance, has strong scale inhibition performance and can effectively help the phosphate-free corrosion and scale inhibitor to improve the scale inhibition performance; secondly, the solid acid can effectively improve the activity of corrosion inhibition substances in the phosphorus-free corrosion and scale inhibitor; thirdly, the solid acid can effectively prevent the precipitation problem among the components of the phosphorus-free corrosion and scale inhibitor, so that the high compatibility among the components of the phosphorus-free corrosion and scale inhibitor is kept.
In the invention, the mass ratio of the total mass of effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the solid acid is preferably 1 (0-23.8), more preferably 1 (0-4.5), and further preferably 1 (0.49-4.5).
The invention provides a preparation method of the phosphorus-free corrosion and scale inhibitor in the technical scheme, which comprises the following steps:
mixing the dispersant, the scale inhibitor and the non-phosphorus corrosion inhibitor to obtain the non-phosphorus corrosion and scale inhibitor.
The process of mixing the dispersant, the scale inhibitor and the phosphorus-free corrosion inhibitor is not particularly limited, and the materials are uniformly mixed according to the process well known in the field.
In the invention, when the phosphorus-free corrosion and scale inhibitor also comprises a fluorescent tracer, the mixing process also comprises adding the fluorescent tracer; when the phosphorus-free corrosion and scale inhibitor also comprises a bactericide, the bactericide is added in the mixing process; when the phosphorus-free corrosion and scale inhibitor also comprises solid acid, the solid acid is added in the mixing process.
In the present invention, when the phosphorus-free corrosion and scale inhibitor further includes water, the preparation method of the phosphorus-free corrosion and scale inhibitor preferably includes the steps of:
mixing the dispersant and the scale inhibitor, and adding the phosphorus-free corrosion inhibitor and water into the mixture to obtain the liquid phosphorus-free corrosion and scale inhibitor.
The process of mixing the dispersant and the scale inhibitor is not particularly limited, and the materials are uniformly mixed according to the process known in the art.
After the dispersant and the scale inhibitor are mixed, the pH value of the obtained mixture is preferably detected, when the pH value of the mixture is more than 3, the pH value of the mixture is preferably adjusted to be less than or equal to 3 by adding acid, and other components are added. The acid is not particularly limited in the present invention, and commercially available acids are well known in the art.
After a mixture of the dispersing agent and the scale inhibitor is obtained, the phosphorus-free corrosion inhibitor is added into the obtained mixture, the mixture is stirred until the phosphorus-free corrosion inhibitor is fully dissolved, water is added, and the mixture is continuously stirred uniformly to obtain the liquid phosphorus-free corrosion and scale inhibitor. The rate of stirring is not particularly limited in the present invention, and it is sufficient to ensure that a homogeneous mixture is obtained according to procedures well known in the art.
In the present invention, when the phosphorus-free corrosion and scale inhibitor further comprises a solid acid and a bactericide, the preparation method of the phosphorus-free corrosion and scale inhibitor preferably comprises the following steps:
drying the liquid raw materials in the phosphorus-free corrosion and scale inhibitor to obtain solid particles; the particle size of the solid particles is 10-3000 mu m.
And mixing the solid particles with solid raw materials in the phosphorus-free corrosion and scale inhibitor, and pressing to obtain the solid phosphorus-free corrosion and scale inhibitor.
Or, when the bactericide is a liquid raw material, the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
drying other liquid raw materials which do not comprise a bactericide in the phosphorus-free corrosion and scale inhibitor to obtain solid particles; the particle size of the solid particles is 10-3000 mu m;
and mixing the solid particles with solid raw materials in the phosphorus-free corrosion and scale inhibitor, adding a bactericide in the mixing process, and pressing to obtain the solid phosphorus-free corrosion and scale inhibitor.
The invention dries the liquid raw material in the phosphorus-free corrosion and scale inhibitor to obtain solid particles. In the invention, when the liquid raw materials in the phosphorus-free corrosion and scale inhibitor are dried, different liquid raw materials can be respectively dried and then mixed; or different liquid raw materials are uniformly mixed and then dried.
In the present invention, the drying is preferably evaporation drying or spray drying; the drying temperature is preferably less than or equal to 220 ℃; the other drying process is not particularly limited in the present invention, and solid particles having a desired particle size can be obtained according to a process well known in the art. In the invention, the particle size of the solid particles is 10-3000 μm, and the preferable particle size is 30-2000 μm. According to the invention, the particle size of the solid particles is controlled, so that the solid particle material has certain fluidity and is prevented from agglomerating.
After solid particles are obtained, the solid particles are mixed with solid raw materials in the phosphorus-free corrosion and scale inhibitor, and the solid phosphorus-free corrosion and scale inhibitor is obtained after pressing. The process of mixing the solid particles with the solid raw materials in the phosphorus-free corrosion and scale inhibitor is not particularly limited, and the materials are uniformly mixed according to the process well known in the field. During the mixing process, the present invention preferably keeps stirring to ensure that the mixture does not agglomerate locally and maintain a certain fluidity.
After the mixing is finished, the obtained mixed material is preferably poured into a mould for pressing; the pressing pressure is not particularly limited in the invention, and the product with the required shape can be obtained by pressing according to the process well known in the field; the invention prepares the phosphorus-free corrosion and scale inhibitor into various blocks with required shapes by pressing. The mold of the present invention is not particularly limited, and a mold for pressing known in the art may be used. The invention solves the compatibility problem of the components when the solid phosphorus-free corrosion and scale inhibitor is dissolved by accurately controlling the proportion of each component and mixing different components and then pressing and molding the mixture, and simultaneously has the same performance of the liquid phosphorus-free corrosion and scale inhibitor.
In the present invention, when the bactericide is a liquid raw material, the bactericide is preferably sprayed in the process of adding the bactericide, and the process of spraying the bactericide is not particularly limited in the present invention, and the bactericide in a required amount is uniformly sprayed according to a process well known in the art.
As another preferred embodiment of the present invention, the preparation method of the phosphorus-free corrosion and scale inhibitor preferably comprises the following steps:
mixing a dispersing agent and a scale inhibitor, and adding a phosphorus-free corrosion inhibitor and water into the obtained mixture to obtain a liquid phosphorus-free corrosion and scale inhibitor;
and drying the liquid phosphorus-free corrosion and scale inhibitor to obtain the solid phosphorus-free corrosion and scale inhibitor.
In the present invention, the process of mixing the dispersant and the scale inhibitor, and adding the phosphorus-free corrosion inhibitor and water to the obtained mixture to obtain the liquid phosphorus-free corrosion and scale inhibitor is preferably the same as the process of preparing the liquid phosphorus-free corrosion and scale inhibitor, and is not repeated herein.
In the present invention, the process of drying the liquid phosphorus-free corrosion and scale inhibitor is preferably the same as the process of drying in the preparation of the solid phosphorus-free corrosion inhibitor, and is not described herein again.
After the drying process of the liquid phosphorus-free corrosion and scale inhibitor is completed, preferably, the method further comprises the step of pressing the obtained particles to obtain the solid phosphorus-free corrosion and scale inhibitor. The pressing process of the present invention is preferably the same as the above scheme, and is not described herein.
The invention provides the application of the phosphorus-free corrosion and scale inhibitor in the technical scheme or the phosphorus-free corrosion and scale inhibitor prepared by the preparation method in the technical scheme in a circulating cooling water system. The method of the present invention is not particularly limited, and the method may be applied according to a method known in the art.
In the invention, when the phosphorus-free corrosion and scale inhibitor is in a liquid state, the dosage of the agent can be accurately added according to the requirement, and the phosphorus-free corrosion and scale inhibitor can be suitable for the circulating cooling water quality under various conditions such as wide range, various water supplementing sources, complex water quality, fluctuating water quality and the like, and has excellent corrosion and scale inhibition performance; when in use, the liquid phosphorus-free corrosion and scale inhibitor is pumped into a cooling water system by a dosing pump; or the components can be independently added into a circulating cooling water system according to the proportion.
In the invention, when the phosphorus-free corrosion and scale inhibitor is solid, the phosphorus-free corrosion and scale inhibitor is placed in a solid distribution system when in use, the water supplement of circulating cooling water is introduced to dissolve the solid phosphorus-free corrosion and scale inhibitor and obtain a solution with the solid content of less than 50%, and then the agent is accurately fed into the circulating cooling water system through a dosing pump. Compared with the liquid phosphorus-free corrosion and scale inhibitor, the solid phosphorus-free corrosion and scale inhibitor is also suitable for the circulating cooling water quality under various conditions of wide and harsh water replenishing sources, complex water quality, water quality fluctuation and the like, and has the same excellent corrosion and scale inhibition performance; in addition, the solid phosphorus-free corrosion and scale inhibitor can be stored for a long time without deterioration, has small volume, small storage space, light weight and safe use, does not produce dangerous container solid wastes after use, and meets the requirements of sustainable development.
In the invention, the phosphorus-free corrosion and scale inhibitor can be applied to a wide range of circulating cooling water quality (the calcium ion range is 0-1000 mg/L (as CaCO)3Calculated), the range of the chloride ion is 0-800 mg/L (calculated by the chloride ion), the total alkalinity is 0-600 mg/L (calculated by CaCO)3Calculation)) and can be applied to the quality of circulating cooling water under various conditions such as various water supply sources, water quality fluctuation and the like.
The phosphorus-free corrosion and scale inhibitor is used for inhibiting metal corrosion of a circulating cooling water system and scale formation, particularly calcium carbonate, calcium sulfate or silicate scale formation; the metal comprises carbon steel, copper, stainless steel or galvanized steel.
In the present invention, the circulating cooling water is preferably circulating cooling water from the fields of petrochemical industry, electric power, steel, metallurgy, hotels, data centers, or food and beverage industry.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following examples, the dispersant, scale inhibitor, water-soluble zinc salt, rare earth metal salt, copper corrosion inhibitor, solid acid, bactericide and fluorescent tracer are all commercially available products.
In the following examples, the preparation method of the phosphorus-free corrosion and scale inhibitor is not described, and the phosphorus-free corrosion and scale inhibitor does not need to be prepared separately.
Example 1
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor and a non-phosphorus corrosion inhibitor; the dispersant is polyacrylic acid, the scale inhibitor is polyepoxysuccinic acid, and the non-phosphorus corrosion inhibitor is zinc chloride, cerium chloride and methylbenzotriazole;
wherein the mass ratio of total effective active matters of the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 10; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 1; the mass ratio of the effective active matter in the zinc chloride to the effective active matter in the cerium chloride is 1: 0.25; the mass ratio of the total effective active substances of the zinc chloride and the cerium chloride to the methylbenzotriazole is 1: 0.333.
Example 2
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor, a non-phosphorus corrosion inhibitor, a bactericide and a solid acid; the dispersing agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polymaleic acid, the non-phosphorus corrosion inhibitor is zinc chloride and cerium chloride, the bactericide is 5-chloro-2-methyl-4-isothiazoline-3-one), and the solid acid is citric acid.
Wherein the mass ratio of the total effective active matters of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the effective active matters in the bactericide is 1: 0015; the mass ratio of total effective active matters of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the solid acid is 1: 0.59; the mass ratio of total effective active matters of the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.1; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 0.033; the mass ratio of the effective active matter in the zinc chloride to the effective active matter in the cerium chloride is 1: 30;
the preparation method comprises the following steps: carrying out spray drying on AA/AMPS and polymaleic acid at the temperature of 200 ℃ to obtain solid particles with the particle size of 500-1000 microns, mixing the solid particles with zinc chloride, cerium chloride and citric acid, adding 5-chloro-2-methyl-4-isothiazoline-3-one in the mixing process, and pressing to obtain the solid phosphorus-free corrosion and scale inhibitor.
Example 3
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor, a non-phosphorus corrosion inhibitor, a fluorescent tracer and a bactericide; the dispersing agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polyaspartic acid, the non-phosphorus corrosion inhibitor is zinc chloride, lanthanum chloride and benzotriazole, the fluorescent tracer is 1,3,6, 8-pyrenetetrasulfonic acid tetrasodium salt, and the bactericide is 5-chloro-2-methyl-4-isothiazoline-3-one.
Wherein the mass ratio of total effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1: 0.00426; the mass ratio of total effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the effective active matters in the bactericide is 1: 0043; the mass ratio of total effective active matters in the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.175; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 1.5; the mass ratio of the effective active matter in the zinc chloride to the effective active matter in the lanthanum chloride is 1: 0.5; the mass ratio of the total effective active substances of the zinc chloride and the lanthanum chloride to the copper corrosion inhibitor is 1: 0.167.
Example 4
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor and a non-phosphorus corrosion inhibitor; the dispersant is polyacrylic acid, the scale inhibitor is polymaleic acid, and the non-phosphorus corrosion inhibitor is zinc chloride and methylbenzotriazole.
Wherein the mass ratio of total effective active matters in the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.165; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 30; the mass ratio of the effective active substances in the zinc chloride to the methylbenzotriazole is 1: 50;
the preparation method comprises the following steps: polyacrylic acid and polymaleic acid are uniformly mixed, and a phosphorus-free corrosion inhibitor and water are added and uniformly mixed to obtain the liquid phosphorus-free corrosion and scale inhibitor.
Example 5
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor, a non-phosphorus corrosion inhibitor, a fluorescent tracer, a bactericide and solid acid; the dispersing agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polymaleic acid, the non-phosphorus corrosion inhibitor is zinc chloride, and the fluorescent tracer is 1,3,6, 8-pyrenetetrasulfonic acid tetrasodium salt; the bactericide is 2, 2-dibromo-3 nitrilopropionamide; the solid acid is citric acid.
Wherein the mass ratio of total effective active substances of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1: 0.47; the mass ratio of the total effective active substances of the dispersing agent, the scale inhibitor and the non-phosphorus corrosion inhibitor to the bactericide is 1: 1.42; the mass ratio of total effective active matters of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the solid acid is 1: 23.8; the mass ratio of total effective active matters of the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.05; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 1;
the preparation method comprises the following steps: and (2) carrying out spray drying on AA/AMPS and polymaleic acid at the temperature of 200 ℃ to prepare the solid-state phosphorus-free corrosion and scale inhibitor with the particle size of 500-1000 microns, mixing the mixture with other solid-state raw materials (zinc chloride, a fluorescent tracer, a bactericide and solid acid), and pressing to obtain the solid-state phosphorus-free corrosion and scale inhibitor.
Example 6
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor, a non-phosphorus corrosion inhibitor, a fluorescent tracer, a bactericide and solid acid; the dispersing agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polymaleic acid, the non-phosphorus corrosion inhibitor is zinc chloride, cerium chloride and methyl benzotriazole, the fluorescent tracer is 1,3,6, 8-pyrenetetrasulfonic acid tetrasodium salt, and the bactericide is 2-methyl-4-isothiazoline-3-one; the solid acid is sodium bisulfate;
wherein the mass ratio of total effective active matters of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1: 0.0075; the mass ratio of the total effective active substances of the dispersing agent, the scale inhibitor and the non-phosphorus corrosion inhibitor to the bactericide is 1: 0.038; the mass ratio of total effective active matters of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the solid acid is 1: 0.57; the mass ratio of total effective active matters in the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.16; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 1.88; the mass ratio of the effective active matter in the zinc chloride to the effective active matter in the cerium chloride is 1: 0.3; the mass ratio of total effective active substances in the zinc chloride and the cerium chloride to the copper corrosion inhibitor is 1: 0.385;
the preparation method comprises the following steps: and (2) carrying out spray drying on AA/AMPS and polymaleic acid at the temperature of 200 ℃ to prepare the solid-state phosphorus-free corrosion and scale inhibitor with the particle size of 500-1000 microns, then mixing the mixture with other solid-state raw materials (zinc chloride, cerium chloride, a fluorescent tracer and solid acid), adding a bactericide in the mixing process, and pressing to obtain the solid-state phosphorus-free corrosion and scale inhibitor.
Example 7
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor and a non-phosphorus corrosion inhibitor; the dispersing agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polyepoxysuccinic acid, and the non-phosphorus corrosion inhibitor is zinc sulfate.
Wherein the mass ratio of the total effective active matters in the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.0017; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1:1.
Example 8
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor, a non-phosphorus corrosion inhibitor, a fluorescent tracer, a bactericide and solid acid; the dispersing agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polymaleic acid, the non-phosphorus corrosion inhibitor is zinc sulfate, cerium chloride and benzotriazole, the fluorescent tracer is 1,3,6,8 pyrenetetrasulfonic acid tetrasodium salt, the bactericide is 2-methyl-4 isothiazoline-3-ketone, and the solid acid is citric acid;
wherein the mass ratio of total effective active substances of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1: 0.0013; the mass ratio of total effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the bactericide is 1: 0.0013; the mass ratio of total effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to solid acid is 1: 0.64; the mass ratio of total effective active matters in the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.2; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 2.25; the mass ratio of the effective active substances in the zinc sulfate to the effective active substances in the cerium chloride is 1: 0.0667; the mass ratio of the total effective active substances of zinc sulfate and cerium chloride to the copper corrosion inhibitor is 1: 0.625;
the preparation method comprises the following steps: and (2) carrying out spray drying on AA/AMPS and HPMA at the drying temperature of 200 ℃ to obtain the solid-state phosphorus-free corrosion and scale inhibitor with the particle size of 500-1000 microns, then mixing the solid-state phosphorus-free corrosion and scale inhibitor with other solid-state raw materials (zinc sulfate, cerium chloride, benzotriazole, a fluorescent tracer and solid acid), adding a bactericide in the mixing process, and pressing to obtain the solid-state phosphorus-free corrosion and scale inhibitor.
Example 9
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor, a non-phosphorus corrosion inhibitor, a fluorescent tracer, a bactericide and solid acid; the dispersing agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polymaleic acid, the non-phosphorus corrosion inhibitor is zinc chloride, cerium chloride and benzotriazole, the fluorescent tracer is 1,3,6, 8-pyrenetetrasulfonic acid tetrasodium salt, and the bactericide is 5-chloro-2-methyl-4-isothiazoline-3-one; the solid acid is citric acid.
Wherein the mass ratio of total effective active substances of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1: 0.0137; the mass ratio of total effective active substances of the dispersing agent, the scale inhibitor and the non-phosphorus corrosion inhibitor to the bactericide is 1: 0.0137; the mass ratio of total effective active matters of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the solid acid is 1: 0.49; the mass ratio of total effective active matters in the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.22; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 2; the mass ratio of the effective active matter in the zinc chloride to the effective active matter in the cerium chloride is 1: 0.167; the mass ratio of the total effective active substances in the zinc chloride and the cerium chloride to the copper corrosion inhibitor is 1: 0.857;
the preparation method comprises the following steps: and (2) carrying out spray drying on AA/AMPS and polymaleic acid at the temperature of 200 ℃ to prepare the solid-state phosphorus-free corrosion and scale inhibitor with the particle size of 500-1000 microns, then mixing the mixture with other solid-state raw materials (zinc chloride, cerium chloride, benzotriazole, a fluorescent tracer and solid acid), adding a bactericide in the mixing process, and pressing to obtain the solid-state phosphorus-free corrosion and scale inhibitor.
Example 10
A non-phosphorus corrosion and scale inhibitor comprises a dispersant, a scale inhibitor, a non-phosphorus corrosion inhibitor, a fluorescent tracer and a bactericide; the dispersing agent is acrylic acid-2-acrylamide-2-methyl propanesulfonic acid copolymer AA/AMPS, the scale inhibitor is polyaspartic acid, the non-phosphorus corrosion inhibitor is zinc sulfate, lanthanum chloride and 5-butyl-1H-benzotriazole (copper corrosion inhibitor), the fluorescent tracer is 1,3,6, 8-pyrenetetrasulfonic acid tetrasodium salt, and the bactericide is 5-chloro-2 methyl-4 isothiazoline-3-ketone.
Wherein the mass ratio of total effective active substances of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1: 0.0138; the mass ratio of the total effective active substances of the dispersing agent, the scale inhibitor and the non-phosphorus corrosion inhibitor to the bactericide is 1: 0.0138; the mass ratio of total effective active matters in the dispersing agent and the scale inhibitor to the effective active matters in the phosphorus-free corrosion inhibitor is 1: 0.168; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1: 2.1; the mass ratio of the effective active substances in the zinc sulfate to the effective active substances in the lanthanum chloride is 1: 0.05; the mass ratio of the total effective active substances in the zinc sulfate and the lanthanum chloride to the copper corrosion inhibitor is 1: 0.48.
In the following application examples, the corrosion inhibition rate was calculated according to the method described in GB/T18175-2014,
the scale inhibition rate is calculated according to the following formula: [1- (C)1-C2)/C1]Gamma 100% at center C1And C2The phosphorus-free corrosion and scale inhibitor is respectively added to the calcium ion concentration before and after the cooling water.
Application example 1
The phosphorus-free corrosion and scale inhibitor of the embodiment 1 is used in cooling water, and the use method comprises the following steps: respectively adding polyacrylic acid, polyepoxysuccinic acid, zinc chloride, cerium chloride and methylbenzotriazole into cooling water for use, wherein the adding sequence is not limited, and the adding amount is ensured to meet the proportion among the components.
Cooling water application conditions-hardness-free water quality: ca2+、Mg2+:0mg/L, total basicity (M-A): 40mg/L (Ca)2+，Mg2+M-A is all CaCO3A meter); cl-0 mg/L; temperature: 45 ℃, pH: 7.0, the running time is 48 hours; the total effective active concentration of the dispersant scale inhibitor corrosion inhibitor is 44 mg/L.
The application result is as follows: concentration multiple: 10 times, scale inhibition rate: 100 percent; carbon steel corrosion inhibition rate: 99 percent; copper corrosion inhibition rate: 99.5 percent.
Application example 2
The phosphorus-free corrosion and scale inhibitor of example 2 was used in cooling water:
cooling water application conditions-low alkalinity, low hardness and low chloride ion water quality: ca2+：50mg/L，Mg2+: 40mg/L, total alkalinity M-A: 100mg/L, Cl-：10mg/L，SO4 2+：50mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.3, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 70 mg/L;
the application result is as follows: concentration multiple: 8 times of the total weight; scale inhibition rate: 100 percent; carbon steel corrosion inhibition rate: 98 percent.
Application example 3
The phosphorus-free corrosion and scale inhibitor of the embodiment 3 is used in cooling water, and the use method comprises the following steps: the dispersing agent, the scale inhibitor, the non-phosphorus corrosion inhibitor, the fluorescent tracer and the bactericide are respectively added into cooling water for use, the adding sequence is not limited, and the adding amount is ensured to meet the proportion among the components.
Cooling water application conditions-low alkalinity, low hardness and high chlorineIon water quality: ca2+：60mg/L，Mg2+: 40mg/L, total alkalinity M-A: 100mg/L, Cl-：500mg/L，SO4 2+：100mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.3, run time 48 hours. The total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 50 mg/L;
the application result is as follows: concentration multiple: 6 times of the total weight; scale inhibition rate: 100 percent; carbon steel corrosion inhibition rate: 99%, copper corrosion inhibition rate: 99.5 percent.
Application example 4
The phosphorus-free corrosion and scale inhibitor of example 4 was used in cooling water:
cooling water application conditions-medium alkalinity medium hardness low chloride ion water quality: ca2+：200mg/L，Mg2+: 100mg/L, total alkalinity M-A: 200mg/L, Cl-：80mg/L，SO4 2+：50mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.4, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 40 mg/L;
the application result is as follows: (ii) a Concentration multiple: 6 times of the total weight; scale inhibition rate: 99 percent; carbon steel corrosion inhibition rate: 99 percent; copper corrosion inhibition rate: 99.5 percent.
Application example 5
The phosphorus-free corrosion and scale inhibitor of example 5 was used in cooling water:
cooling water application conditions-medium alkalinity medium hardness medium chloride ion water quality: ca2+：200mg/L，Mg2+: 120mg/L, total alkalinity M-A: 150mg/L, Cl-：100mg/L，SO4 2+：100mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.3, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 15 mg/L;
the application result is as follows: concentration multiple: 6 times of the total weight; scale inhibition rate: 99 percent; carbon steel corrosion inhibition rate: 98 percent.
Application example 6
The phosphorus-free corrosion and scale inhibitor of example 6 was used in cooling water:
cooling water application conditions-medium alkalinity, medium hardness, high chloride ion water quality: ca2+：300mg/L，Mg2+: 130mg/L, total alkalinity M-A: 200mg/L, Cl-：450mg/L，SO4 2+：200mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.5, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 52 mg/L;
the application result is as follows: (ii) a Concentration multiple: 6 times of the total weight; scale inhibition rate: 99 percent; carbon steel corrosion inhibition rate: 99 percent; copper corrosion inhibition rate: 99.5 percent.
Application example 7
The phosphorus-free corrosion and scale inhibitor of example 7 was used in cooling water:
the using method comprises the following steps: and respectively adding AA/AMPS, polyepoxysuccinic acid and zinc sulfate into cooling water to meet the mixture ratio of the components.
Cooling water application conditions-high hardness low chloride ion water quality: ca2+：450mg/L，Mg2+: 100mg/L, total alkalinity M-A: 360mg/L of Cl-：100mg/L，SO4 2+：300mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.3, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 60 mg/L;
the application result is as follows: (ii) a Concentration multiple: 6 times of the total weight; scale inhibition rate: 99 percent; carbon steel corrosion inhibition rate: 99 percent.
Application example 8
The phosphorus-free corrosion and scale inhibitor of example 8 was used in cooling water:
cooling water application conditions-high hardness and high chloride ion water quality: ca2+：900mg/L，Mg2+: 100mg/L, total alkalinity M-A: 150mg/L, Cl-：600mg/L，SO4 2+：50mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.3, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 40 mg/L.
The application result is as follows: concentration multiple: 6 times of the total weight; scale inhibition rate: 98 percent; carbon steel corrosion inhibition rate: 98 percent; copper corrosion inhibition rate: 99 percent.
Application example 9
The phosphorus-free corrosion and scale inhibitor of example 9 was used in cooling water:
cooling water application conditions-fluctuating water quality: ca2+：100～800mg/L，Mg2+: 50-100 mg/L, total alkalinity M-A: 150mg/L, Cl-：100～500mg/L，SO4 2+：50～500mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter). Temperature: 45 ℃, pH: 8.3, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 40 mg/L;
the application result is as follows: concentration multiple: 6 times of the total weight; scale inhibition rate: 99 percent; carbon steel corrosion inhibition rate: 98 percent; copper corrosion inhibition rate: 99 percent.
Application example 10
The phosphorus-free corrosion and scale inhibitor of example 10 was used in cooling water:
the using method comprises the following steps: and respectively adding the AA/AMPS, the polyaspartic acid, the non-phosphorus corrosion inhibitor, the fluorescent tracer and the bactericide into cooling water to meet the mixture ratio of the components.
Cooling water application conditions-organic leakage water quality: ca2+：350mg/L，Mg2+:50 mg/L, total alkalinity M-A: 250mg/L, Cl-：350mg/L，SO4 2+：50mg/L；(Ca2+，Mg2+M-A is all CaCO3Meter), isopropyl alcohol (simulated process leak component): 10 mg/L; temperature: 45 ℃, pH: 8.3, the running time is 48 hours; the total effective active matter concentration of the dispersant scale inhibitor corrosion inhibitor is 50 mg/L.
The application result is as follows: concentration multiple: 6 times of the total weight; scale inhibition rate: 99.5 percent; carbon steel corrosion inhibition rate: 99 percent; copper corrosion inhibition rate: 99 percent.
FIG. 1 is a drawing of a carbon steel coupon after the test of application example 3, and it can be seen from FIG. 1 that the coupon after the test is finished still keeps clean and bright without any scaling and corrosion.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (12)

1. A non-phosphorus corrosion and scale inhibitor is characterized by comprising a dispersant, a scale inhibitor and a non-phosphorus corrosion inhibitor; the non-phosphorus corrosion inhibitor comprises a carbon steel corrosion inhibitor; the carbon steel corrosion inhibitor comprises water-soluble zinc salt; the mass ratio of the effective active matter in the dispersing agent to the effective active matter in the scale inhibitor is 1 (0.033-30); the ratio of the total mass of the effective active substances of the dispersing agent and the scale inhibitor to the mass of the effective active substances of the phosphorus-free corrosion inhibitor is 1 (0.00167-10).
2. The phosphorus-free corrosion and scale inhibitor of claim 1, wherein the dispersant comprises a water-soluble carboxylic acid polymer comprising a water-soluble carboxylic acid homopolymer or a water-soluble carboxylic acid copolymer; the polymeric monomer of the water-soluble carboxylic acid homopolymer comprises acrylic acid, maleic anhydride, itaconic acid or methacrylic acid; the polymerization monomer of the water-soluble carboxylic acid copolymer comprises two or more of acrylic acid, maleic anhydride, itaconic acid and methacrylic acid, or the polymerization monomer of the water-soluble carboxylic acid copolymer comprises a first polymerization monomer and a second polymerization monomer, wherein the first polymerization monomer comprises one or more of acrylic acid, maleic anhydride, itaconic acid and methacrylic acid; the second polymerization monomer comprises one or more of acrylamide, allyl sulfonic acid and 2-acrylamide-2 methyl propane sulfonic acid monomers;
the scale inhibitor comprises water-soluble carboxylic acid compounds; the water-soluble carboxylic acid compounds comprise one or more of polymaleic acid, polymethacrylic acid, polyacrylic acid, polyepoxysuccinic acid and polyaspartic acid.
3. The phosphorus-free corrosion and scale inhibitor of claim 1, wherein the water soluble zinc salt comprises one or more of zinc chloride, zinc sulfate, zinc nitrate, and zinc acetate;
the carbon steel corrosion inhibitor also comprises rare earth metal salt, wherein the rare earth metal salt comprises one or more of cerium chloride, cerium sulfate, cerium nitrate, lanthanum chloride, lanthanum sulfate, lanthanum nitrate, yttrium chloride, yttrium sulfate, yttrium nitrate, praseodymium chloride, praseodymium sulfate, praseodymium nitrate, neodymium chloride, neodymium sulfate, neodymium nitrate, samarium chloride, samarium sulfate and samarium nitrate;
the phosphorus-free corrosion inhibitor also comprises a copper corrosion inhibitor, wherein the copper corrosion inhibitor comprises azole compounds, and the azole compounds comprise one or more of 2-mercaptobenzothiazole, benzotriazole, methylbenzotriazole, chloromethylbenzotriazole and 5-butyl-1H-benzotriazole (5-butyl-benzotriazole).
4. The phosphorus-free corrosion and scale inhibitor of claim 1, further comprising a fluorescent tracer; the fluorescent tracer is pyrene sulfonate; the mass ratio of the total mass of the effective active substances of the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the fluorescent tracer is 1 (0-0.48).
5. The phosphorus-free corrosion and scale inhibitor according to claim 1, further comprising a bactericide; the germicide comprises a non-oxidative germicide; the non-oxidizing bactericide comprises one or more of chlorophenol bactericide, quaternary ammonium salt bactericide, isothiazolinone bactericide, amide bactericide, organic sulfur compound bactericide and glutaraldehyde; the mass ratio of the total mass of the effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the mass of the effective active matters in the bactericide is 1 (0-1.43).
6. The phosphorus-free corrosion and scale inhibitor according to any one of claims 1 to 5, further comprising water.
7. The phosphorus-free corrosion and scale inhibitor of claim 5, further comprising a solid acid comprising one or more of a solid organic carboxylic acid, a solid organic sulfonic acid, a hydrogen sulfate salt, and a sulfamic acid; the solid organic carboxylic acid comprises one or more of tartaric acid, citric acid, malic acid, succinic acid, adipic acid and glycolic acid; the solid organic sulfonic acid comprises benzenesulfonic acid or p-toluenesulfonic acid; the mass ratio of the total mass of effective active matters in the dispersing agent, the scale inhibitor and the phosphorus-free corrosion inhibitor to the solid acid is 1 (0-23.8).
8. The preparation method of the phosphorus-free corrosion and scale inhibitor of any one of claims 1 to 7, which is characterized by comprising the following steps:
mixing the dispersant, the scale inhibitor and the non-phosphorus corrosion inhibitor to obtain the non-phosphorus corrosion and scale inhibitor.
9. The method of preparing according to claim 8, wherein when the phosphorus-free corrosion and scale inhibitor further comprises water, the method of preparing the phosphorus-free corrosion and scale inhibitor comprises the steps of:
mixing the dispersant and the scale inhibitor, and adding the phosphorus-free corrosion inhibitor and water into the mixture to obtain the liquid phosphorus-free corrosion and scale inhibitor.
10. The preparation method according to claim 8, wherein when the phosphorus-free corrosion and scale inhibitor further comprises a solid acid and a bactericide, the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
drying the liquid raw materials in the phosphorus-free corrosion and scale inhibitor to obtain solid particles; the particle size of the solid particles is 10-3000 mu m;
mixing the solid particles with solid raw materials in the phosphorus-free corrosion and scale inhibitor, and pressing to obtain the solid phosphorus-free corrosion and scale inhibitor;
or, when the bactericide is a liquid raw material, the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
drying other liquid raw materials which do not comprise a bactericide in the phosphorus-free corrosion and scale inhibitor to obtain solid particles; the particle size of the solid particles is 10-3000 mu m;
and mixing the solid particles with solid raw materials in the phosphorus-free corrosion and scale inhibitor, adding a bactericide in the mixing process, and pressing to obtain the solid phosphorus-free corrosion and scale inhibitor.
11. The preparation method of claim 9, wherein the preparation method of the phosphorus-free corrosion and scale inhibitor comprises the following steps:
mixing a dispersing agent and a scale inhibitor, and adding a phosphorus-free corrosion inhibitor and water into the obtained mixture to obtain a liquid phosphorus-free corrosion and scale inhibitor;
and drying the liquid phosphorus-free corrosion and scale inhibitor to obtain the solid phosphorus-free corrosion and scale inhibitor.
12. The phosphorus-free corrosion and scale inhibitor according to any one of claims 1 to 7 or the phosphorus-free corrosion and scale inhibitor prepared by the preparation method according to any one of claims 8 to 11 is applied to a circulating cooling water system.
CN202111637847.7A 2021-12-29 2021-12-29 Phosphorus-free corrosion and scale inhibitor and preparation method and application thereof Pending CN114262070A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117819741A (en) * 2023-12-28 2024-04-05 枣庄职业学院 Coated corrosion and scale inhibitor based on modified polyaspartic acid and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101805067A (en) * 2009-02-17 2010-08-18 上海洗霸科技有限公司 Phosphorus-free green composite corrosion and scale inhibitor
CN102642934A (en) * 2012-04-23 2012-08-22 国家海洋局天津海水淡化与综合利用研究所 Phosphorus-free environment-friendly carbon steel composite corrosion inhibitor by using seawater circulating cooling water as well as preparation and use methods thereof
CN103523935A (en) * 2013-10-23 2014-01-22 中国海洋石油总公司 Preparation method of tracing type phosphorus-free corrosion and scale inhibitor
CN103771599A (en) * 2012-10-24 2014-05-07 中国石油化工股份有限公司 Phosphorus-free composite scale and corrosion inhibitor and application thereof as well as circulating water treatment method
CN105600953A (en) * 2015-12-22 2016-05-25 常州科威天使环保科技股份有限公司 Non-phosphorus scale and corrosion inhibitor for recirculating cooling water system, as well as preparation method and application of non-phosphorus scale and corrosion inhibitor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9028747B2 (en) * 2012-12-28 2015-05-12 Ecolab Usa Inc. Corrosion and fouling mitigation using non-phosphorus based additives
CN103523936B (en) 2013-11-01 2014-09-17 中国海洋石油总公司 Non-phosphorus corrosion and scale inhibitor for low-hardness water system industrial recycling cooling water
CN103673765B (en) 2013-11-29 2015-09-02 宁波腾隆户外用品有限公司 Illumination on gun and aiming control device
CN105314743A (en) 2015-12-04 2016-02-10 中国海洋石油总公司 Non-phosphorus corrosion and scale inhibitor applicable to negative hard water quality and preparation method of non-phosphorus corrosion and scale inhibitor
CN109019883B (en) 2018-08-15 2022-04-01 鞍钢栗田(鞍山)水处理有限公司 Non-phosphorus corrosion and scale inhibitor for industrial sewage reuse technology and preparation method thereof
CN112047498A (en) * 2020-07-29 2020-12-08 深圳市长隆科技有限公司 Circulating water phosphorus-free corrosion and scale inhibitor and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101805067A (en) * 2009-02-17 2010-08-18 上海洗霸科技有限公司 Phosphorus-free green composite corrosion and scale inhibitor
CN102642934A (en) * 2012-04-23 2012-08-22 国家海洋局天津海水淡化与综合利用研究所 Phosphorus-free environment-friendly carbon steel composite corrosion inhibitor by using seawater circulating cooling water as well as preparation and use methods thereof
CN103771599A (en) * 2012-10-24 2014-05-07 中国石油化工股份有限公司 Phosphorus-free composite scale and corrosion inhibitor and application thereof as well as circulating water treatment method
CN103523935A (en) * 2013-10-23 2014-01-22 中国海洋石油总公司 Preparation method of tracing type phosphorus-free corrosion and scale inhibitor
CN105600953A (en) * 2015-12-22 2016-05-25 常州科威天使环保科技股份有限公司 Non-phosphorus scale and corrosion inhibitor for recirculating cooling water system, as well as preparation method and application of non-phosphorus scale and corrosion inhibitor

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
中国科学技术协会编: "《材料腐蚀学科发展报告》", 30 April 2012 *
李东光: "《新编实用化工产品配方与制备水处理剂分册》", 30 June 2020, 中国纺织出版社有限公司 *
沈一丁等: "《轻化工助剂》", 中国轻工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117819741A (en) * 2023-12-28 2024-04-05 枣庄职业学院 Coated corrosion and scale inhibitor based on modified polyaspartic acid and preparation method thereof

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