CN110818099A - Water circulation dirt treating agent - Google Patents
Water circulation dirt treating agent Download PDFInfo
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- CN110818099A CN110818099A CN201911252126.7A CN201911252126A CN110818099A CN 110818099 A CN110818099 A CN 110818099A CN 201911252126 A CN201911252126 A CN 201911252126A CN 110818099 A CN110818099 A CN 110818099A
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F14/00—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes
- C23F14/02—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes by chemical means
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
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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
- 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
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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
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
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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
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- Mechanical Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
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Abstract
The invention discloses a water circulation dirt treating agent which comprises the following components in parts by mass: 10-15 parts of weak acid scale remover, 1-10 parts of antirust agent, 1-10 parts of alcohol amine compound, 1-10 parts of antioxidant, 1-8 parts of aluminum antioxidant, 1-5 parts of dispersing agent, 1-5 parts of surfactant, 1-10 parts of scale and corrosion inhibitor, 1-10 parts of dispersing agent, 1-10 parts of EDTMPA and 0.1-0.5 part of defoaming agent. According to the water circulation dirt treating agent, the weak acid scale remover is adopted, and a plurality of components such as a scale and corrosion inhibitor, an antirust agent, an antioxidant and the like are combined, so that when the dirt impurities in equipment are removed, the corrosion effect of the dirt removing sewage on a pipeline is weakened, and the influence of the dirt removing wastewater on the environment is reduced; the descaling wastewater has little corrosion effect on the pipeline, delays the aging rate of the pipeline, reduces the water consumption and the operation cost of the descaling operation, and further improves the market competitiveness of the descaling agent.
Description
Technical Field
The invention relates to the technical field of scale removers, in particular to a water circulation dirt treating agent.
Background
The scale remover is a chemical reagent for removing a plurality of scales such as water scales, dirt and the like, and is generally prepared by compounding a plurality of components. The main component of the descaling agent is an acidic substance, and the main component is a strong acid salt which is subjected to complexing or chelating reaction with water scale, so that calcium and magnesium substances in the water scale form water slag with small particle size, low viscosity and high fluidity and are discharged along with cleaning water, the generation of the water scale is reduced, the safe use of boiler equipment or the smooth and clean of drinking water equipment is ensured, and the strong acid descaling agent has a good descaling effect and high descaling efficiency, so that the descaling agent is widely applied to descaling and cleaning operations of boilers and drinking water equipment.
However, after the traditional strong-acid descaling agent is used, the descaling waste liquid contains a large amount of acidic corrosive substances, which damage pipelines and equipment in the discharging process and damage environmental water greatly, thus being not beneficial to environmental protection and energy conservation; if the method of cleaning the water channel for multiple times is adopted to eliminate the influence of corrosive substances on the pipeline and equipment, the workload of the descaling operation is increased, the descaling operation consumes long time and consumes huge water, so that the cost of the descaling operation is increased, and the market competitiveness of the descaling agent is not favorably improved.
Disclosure of Invention
In view of the above, it is necessary to provide a water circulation fouling treatment agent for solving the technical problem that waste liquid is corrosive.
A water circulation dirt treatment agent comprises the following components in parts by mass: 10-15 parts of weak acid scale remover, 1-10 parts of antirust agent, 1-10 parts of alcohol amine compound, 1-10 parts of antioxidant, 1-8 parts of aluminum antioxidant, 1-5 parts of dispersing agent, 1-5 parts of surfactant, 1-10 parts of scale and corrosion inhibitor, 1-10 parts of dispersing agent, 1-10 parts of EDTMPA and 0.1-0.5 part of defoaming agent.
In one embodiment, the weak acid detergent is one of sodium citrate, citric acid or sodium gluconate.
In one embodiment, the weak acid detergent is composed of sodium citrate and sodium gluconate in a molar ratio of 1: 1.5.
In one embodiment, the water circulation dirt treatment agent further comprises 1-10 parts of a bactericidal algicide.
In one embodiment, the rust inhibitor is one or two of borate, sodium molybdate or amide.
In one embodiment, the alkanolamine compound is one or two of triethanolamine, monoethanolamine or diethanolamine.
In one embodiment, the antioxidant is benzotriazole.
In one embodiment, the dispersing agent is peregal or n-propanol.
In one embodiment, the scale and corrosion inhibitor is PESA or PASP.
In one embodiment, the dispersant is an acrylate or a polyacrylate.
According to the water circulation dirt treating agent, the weak acid scale remover is adopted, and a plurality of components such as a scale and corrosion inhibitor, an antirust agent, an antioxidant and the like are combined, so that when the dirt impurities in equipment are removed, the corrosion effect of the dirt removing sewage on a pipeline is weakened, the influence of the dirt removing wastewater on the environment is small, and the environment protection and energy saving are facilitated; the descaling wastewater has little corrosion effect on the pipeline, and can prevent the descaling wastewater from precipitating and scaling in the pipeline so as to delay the aging rate of the pipeline, and the pipeline does not need to be cleaned again after the descaling wastewater passes through the pipeline, so that the water consumption and the operation cost of descaling operation are reduced, and the market competitiveness of the descaling agent is further improved.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Example 1
The invention provides a water circulation dirt treating agent which comprises the following components in parts by mass: 10 parts of weak acid scale remover, 1 part of antirust agent, 3 parts of alcohol amine compound, 1 part of antioxidant, 1.5 parts of aluminum antioxidant, 1 part of dispersing agent, 1 part of surfactant, 1 part of scale and corrosion inhibitor, 1 part of dispersing agent, 1 part of EDTMPA and 0.1 part of defoaming agent.
According to the water circulation dirt treating agent, the weak acid scale remover is adopted, and a plurality of components such as a scale and corrosion inhibitor, an antirust agent, an antioxidant and the like are combined, so that when the dirt impurities in equipment are removed, the corrosion effect of the dirt removing sewage on a pipeline is weakened, the influence of the dirt removing wastewater on the environment is small, and the environment protection and energy saving are facilitated; the descaling wastewater has little corrosion effect on the pipeline, and can prevent the descaling wastewater from precipitating and scaling in the pipeline so as to delay the aging rate of the pipeline, and the pipeline does not need to be cleaned again after the descaling wastewater passes through the pipeline, so that the water consumption and the operation cost of descaling operation are reduced, and the market competitiveness of the descaling agent is further improved.
The weak acid scale remover is a weak alkaline scale remover synthesized by weak acid and strong base, is mainly used for reacting with water scale in boiler equipment to eliminate precipitates adhered to the inner surface of the boiler equipment, and prevents the boiler equipment from being heated unevenly in the heating process and even causing boiler explosion accidents so as to ensure the safety of boiler use. In one embodiment, the weak acid detergent is sodium citrate. The sodium citrate is a strong alkali weak acid salt generated by neutralizing citric acid and sodium hydroxide, the pH value of the solution is about 8, and the sodium citrate belongs to a weak alkali scale remover. After the sodium citrate is dissolved in water, it is dissociated into citrate ion and sodium ion, and at the same time, it is hydrolyzed to produce hydrogen ion and hydroxide ion, when these free ions are contacted with the scale on the internal surface of boiler, the calcium carbonate and magnesium hydroxide which are gradually dissolved in the scale are precipitated to produce calcium citrate, sodium carbonate, magnesium citrate and small quantity of sodium hydroxide which are dissolved in water, so that the goal of removing scale can be reached. In addition, the sodium citrate has good complexing performance, and can perform complexing reaction with free metal ions generated in the descaling operation process so as to reduce the free metal ions in the descaling agent and further promote the decomposition of calcium carbonate and magnesium hydroxide, thereby improving the descaling operation efficiency.
The rust inhibitor is one of penetrants, and can permeate rust, corrosive substances and oil stains to remove rust and corrosive substances on the inner surface of the boiler and the inner surface of the pipeline. In one embodiment, the rust inhibitor is a borate ester. The boric acid ester is a common antirust agent, has good oxidation resistance, has no corrosion to copper at high temperature, has good antirust performance to steel, and can form a protective film on the surface of the steel, so that the oxidation reaction of the steel is blocked, and the antirust protection of the steel is realized. In addition, the boric acid ester has good thermal stability, and when the dirt treatment agent is heated in order to improve the dirt removal effect in the dirt removal process, the boric acid ester can still keep the stability even at a high temperature, so that the dirt removal effect of the dirt treatment agent is ensured.
The alcohol amine compound can delay the oxidation process of the metal material, namely, the rust prevention protection of the metal material can be realized, so that the service life of the metal material is prolonged. In addition, the alcohol amine compound can also be used as a buffering agent to adjust the pH value of the fouling treating agent, so that the problem of pipeline corrosion caused by overhigh pH value of the fouling treating agent is solved. In one embodiment, the alkanolamine compound is triethanolamine. Triethanolamine is an important alcohol amine compound, has alkalescence, and can generate a chelate with 2-4 ligands with various metal ions such as iron, aluminum, copper and the like, so that free metal ions in a dirt treating agent in the dirt removing operation are consumed, the continuous reaction of a weak acid dirt removing agent and water scale is promoted, and the water scale removing operation is realized. In addition, triethanolamine can be used as a surfactant to reduce the tension of the inner surface of the boiler equipment, so that the dirt treating agent can quickly combine with the scale on the inner surface of the boiler equipment to react, and the descaling operation can be accelerated.
Antioxidants are used to retard or inhibit the oxidation process of boiler equipment and pipelines, thereby preventing aging and extending the useful life of boiler equipment and pipelines. In one embodiment, the antioxidant is benzotriazole. The benzotriazole has good corrosion prevention effect, can effectively delay the corrosion aging process of boiler equipment and pipelines, and further prolongs the service life of the boiler equipment and the pipelines. In addition, the benzotriazole can be used together with various scale inhibitors and sterilization algicides, so that the scale removal operation of boiler equipment is realized, and the breeding of bacteria and algae substances in the pipeline is reduced, so as to ensure the smoothness of the pipeline. In the actual production, a commercially available passivating agent with the model number of SL-362 can be selected to replace benzotriazole for addition according to production conditions, and after the passivating agent is added with a dirt treatment agent, a layer of dense passivation film is formed on the inner surface of boiler equipment and the inner surface of a pipeline to block further oxidation of the boiler equipment and the pipeline, so that the service life of the boiler equipment and the pipeline is prolonged.
Aluminum antioxidants are compounds used to retard the oxidation reaction of aluminum materials. Because common boiler equipment is supported by aluminum materials, the oxidation process of the aluminum materials can be pertinently delayed by adding the aluminum antioxidant, so that the service life of the boiler equipment is prolonged. In an embodiment, the aluminum antioxidant used in the present invention is a commercially available aluminum antioxidant with a model number of H102 or H100, and the specific components of the aluminum antioxidant are not within the protection scope of the present invention, and only the aluminum antioxidant needs to be satisfied to delay the oxidation reaction process of the aluminum material, which is not described herein again.
The dispersing agent helps promote uniform distribution of the components within the soil treatment agent so that the properties of each part within the soil treatment agent are uniform to ensure the reliability of the soil treatment agent. In one embodiment, the diffusing agent is peregal. The peregal also called fatty alcohol-polyoxyethylene ether has better dispersion performance, is a nonionic surfactant, and can promote the movement and uniform mixing of all components in the dirt treatment agent, thereby improving the uniformity of the dirt treatment agent. In addition, the aqueous solution of peregal is neutral, and has no influence on the pH value of the fouling treating agent, thereby further weakening the corrosion effect of the fouling treating agent on the pipeline and prolonging the service life of the pipeline.
The surfactant is used for combining with oil stains on the surface of water stains in boiler equipment to reduce the surface tension of the oil stains, so that hydrogen ions and hydroxyl ions generated by hydrolysis of the weak acid scale remover are combined with the oil stains to decompose the oil stains, the water stains are exposed, the subsequent weak acid scale remover further reacts with the water stains, and the water stains on the inner surface of the boiler equipment are removed. In an embodiment, the surfactant is a commercially available surfactant with a type 122H or a surfactant with a type 121H, and the specific components of the surfactant are not within the scope of the present invention, and only the surfactant is an ionic surfactant, which is not described herein again.
The scale and corrosion inhibitor consists of organic phosphine, excellent copolymer, copper corrosion inhibitor and the like, has excellent corrosion inhibition performance on carbon steel, copper and copper alloy, and has excellent scale and dispersion performance on calcium carbonate and calcium phosphate. In one embodiment, the scale and corrosion inhibitor is PESA. PESA is also called polyepoxysuccinic acid, and is a phosphorus-free and non-nitrogen environment-friendly multi-component scale and corrosion inhibitor. The PESA has good scale inhibition and dispersion performance on calcium carbonate, calcium sulfate, barium sulfate and other precipitates in water, and the scale inhibition effect of the PESA is superior to that of a common organic phosphine scale inhibitor.
The dispersant is one of surfactants that can adjust the surface tension of the components within the soil treatment agent to promote migration and fusion of the components, thereby enhancing the uniformity of the soil treatment agent. In one embodiment, the dispersant is an acrylate. The acrylic ester has good dispersibility, can promote the blending and mixing of all components in the dirt treatment agent, is beneficial to improving the uniformity of the dirt treatment agent, and improves the stability and reliability of the dirt removal performance of the dirt treatment agent.
EDTMPA, also known as ethylenediaminetetramethylenephosphonic acid, is a chelating agent with strong chelating ability, which can combine with free metal ions generated during descaling operation to generate chelating groups with stable structure, thereby consuming metal ions in the scale treatment agent to promote the decomposition of scale.
The defoaming agent is used for eliminating foams generated in the using process of the fouling treating agent so as to reduce the surface tension of the fouling treating agent, further promote the fusion of all parts of the fouling treating agent and improve the uniformity of the fouling treating agent. The defoaming agent of the present invention may be any commercially available defoaming agent, and it is only necessary to reduce the surface tension of the soil treatment agent, and details thereof are not repeated herein.
Example 2
The invention provides a water circulation dirt treating agent which comprises the following components in parts by mass: 12 parts of weak acid scale remover, 3 parts of antirust agent, 8 parts of alcohol amine compound, 2 parts of antioxidant, 1 part of aluminum antioxidant, 2 parts of dispersing agent, 3 parts of surfactant, 4 parts of scale and corrosion inhibitor, 3 parts of dispersing agent, 4 parts of EDTMPA and 0.2 part of defoaming agent.
According to the water circulation dirt treating agent, the weak acid scale remover is adopted, and a plurality of components such as a scale and corrosion inhibitor, an antirust agent, an antioxidant and the like are combined, so that when the dirt impurities in equipment are removed, the corrosion effect of the dirt removing sewage on a pipeline is weakened, the influence of the dirt removing wastewater on the environment is small, and the environment protection and energy saving are facilitated; the descaling wastewater has little corrosion effect on the pipeline, and can prevent the descaling wastewater from precipitating and scaling in the pipeline so as to delay the aging rate of the pipeline, and the pipeline does not need to be cleaned again after the descaling wastewater passes through the pipeline, so that the water consumption and the operation cost of descaling operation are reduced, and the market competitiveness of the descaling agent is further improved.
In one embodiment, the weak acid detergent is citric acid. Citric acid is an important organic acid which reacts with calcium carbonate and magnesium hydroxide in the scale to form calcium citrate and magnesium citrate with high solubility, thereby removing the scale on the inner surface of the boiler equipment. Furthermore, citric acid also acts as a chelating agent to eliminate free metal ions that are incorporated into the soil treatment agent, thereby promoting the decomposition of scale. In addition, the citric acid has a good effect of killing bacterial spores at the temperature of 80 ℃ so as to reduce the breeding of bacteria on the inner surface of boiler equipment and the inner wall of a pipeline and ensure the sanitary condition of the boiler and the smoothness of the pipeline.
In one embodiment, the rust inhibitor is sodium molybdate. The sodium molybdate can be used as a metal corrosion inhibitor, a scale remover and an antirust agent to delay the oxidation process of metal materials and prolong the service life of the metal materials. Specifically, when the sodium molybdate is in contact with the iron material, the sodium molybdate is used as an anodic oxide film type corrosion inhibitor, and a ferrous-ferric-molybdenum oxide passivation film is formed on the anodic iron to play a role in corrosion inhibition, so that the service life of the iron material is prolonged.
In one embodiment, the alkanolamine is monoethanolamine. The monoethanolamine is mainly used as a buffering agent to adjust the pH value of the dirt treatment agent so as to prevent the pipeline corrosion problem caused by too high or too low pH value of the dirt treatment agent and prolong the service life of the pipeline.
In one embodiment, the dispersing agent is n-propanol. The n-propanol has good solubility, and can be dissolved with most polar substances and nonpolar substances, so that the components in the dirt treatment agent are mixed and dissolved, and the uniformity of the dirt treatment agent is improved.
In one embodiment, the scale and corrosion inhibitor is PASP. PASP is also called polyaspartic acid, which has the effect of inhibiting scale, can inhibit the formation of calcium carbonate scale, calcium sulfate scale, barium sulfate scale and calcium phosphate scale in cooling water, boiler water and reverse osmosis treatment, has the scale inhibition rate of calcium carbonate of 100 percent and has good scale inhibition effect. In addition, PASP also has the dispersing function and can effectively prevent the corrosion of metal equipment so as to prolong the service life of the equipment. It should be noted that PASP can be compounded with polyacrylic acid to form a highly efficient and multifunctional corrosion and scale inhibitor, and therefore, in this embodiment, polyacrylate is used as a dispersant to promote uniform dispersion of the scale treatment agent and simultaneously improve the descaling effect of the scale treatment agent.
Example 3
The invention provides a water circulation dirt treating agent which comprises the following components in parts by mass: 14 parts of weak acid scale remover, 8 parts of antirust agent, 1 part of alcohol amine compound, 3 parts of benzotriazole, 8 parts of aluminum antioxidant, 4 parts of peregal, 4 parts of surfactant, 6 parts of PESA, 6 parts of acrylate, 6 parts of EDTMPA and 0.4 part of defoaming agent.
According to the water circulation dirt treating agent, the weak acid scale remover is adopted, and a plurality of components such as a scale and corrosion inhibitor, an antirust agent, an antioxidant and the like are combined, so that when the dirt impurities in equipment are removed, the corrosion effect of the dirt removing sewage on a pipeline is weakened, the influence of the dirt removing wastewater on the environment is small, and the environment protection and energy saving are facilitated; the descaling wastewater has little corrosion effect on the pipeline, and can prevent the descaling wastewater from precipitating and scaling in the pipeline so as to delay the aging rate of the pipeline, and the pipeline does not need to be cleaned again after the descaling wastewater passes through the pipeline, so that the water consumption and the operation cost of descaling operation are reduced, and the market competitiveness of the descaling agent is further improved.
In one embodiment, the weak acid detergent is sodium gluconate. The sodium gluconate has strong descaling capacity, strong complexing capacity on calcium, magnesium and iron salts, and particularly has excellent chelation on ferric ions, so that the decomposition of precipitates such as calcium carbonate, magnesium hydroxide and the like in water scales is promoted. In addition, the sodium gluconate can also be used as a corrosion and scale inhibitor to delay the growth rate of scale on the inner surface of boiler equipment.
In one embodiment, the water circulation dirt treatment agent further comprises 1 part of bactericidal algicide. The bactericidal algicide is used for killing bacterial spores on the inner surface of boiler equipment and the inner surface of a pipeline, preventing bacteria and algae from growing on the inner surface of the boiler equipment so as to improve the sanitary condition of the boiler equipment, and also preventing a large amount of algae from growing in the pipeline so as to ensure the smoothness of the pipeline and prolong the service life of the pipeline.
In one embodiment, the rust inhibitor is an amide. The amide is an excellent solvent for organic and inorganic substances, which can promote the mixing of the components in the dirt treatment agent and improve the uniformity of the dirt treatment agent on one hand, and can react with rust and corrosive substances, such as acid substances, on the surface of equipment to remove the rust on the surface of the equipment on the other hand, because the amide is a weak base.
In one embodiment, the alkanolamine compound is diethanolamine. Diethanolamine can be used as a nonionic surfactant to reduce the surface tension of the components in the soil treatment agent and to facilitate mixing of the components, thereby improving the uniformity of the soil treatment agent. Diethanolamine is also an important scale and corrosion inhibitor, and can be used for corrosion inhibition in boiler water treatment, coolants of automobile engines, drilling and cutting oil and other various lubricating oils.
Example 4
The invention provides a water circulation dirt treating agent which comprises the following components in parts by mass: 15 parts of sodium gluconate, 10 parts of antirust agent, 10 parts of alcohol amine compound, 10 parts of benzotriazole, 6 parts of aluminum antioxidant, 5 parts of n-propanol, 5 parts of surfactant, 10 parts of PASP, 10 parts of polyacrylate, 10 parts of EDTMPA and 0.5 part of defoaming agent.
According to the water circulation dirt treating agent, the weak acid scale remover is adopted, and a plurality of components such as a scale and corrosion inhibitor, an antirust agent, an antioxidant and the like are combined, so that when the dirt impurities in equipment are removed, the corrosion effect of the dirt removing sewage on a pipeline is weakened, the influence of the dirt removing wastewater on the environment is small, and the environment protection and energy saving are facilitated; the descaling wastewater has little corrosion effect on the pipeline, and can prevent the descaling wastewater from precipitating and scaling in the pipeline so as to delay the aging rate of the pipeline, and the pipeline does not need to be cleaned again after the descaling wastewater passes through the pipeline, so that the water consumption and the operation cost of descaling operation are reduced, and the market competitiveness of the descaling agent is further improved.
In one embodiment, the weak acid detergent is composed of sodium citrate and sodium gluconate in a molar ratio of 1: 1.5. By using the ammonium citrate and the sodium gluconate in a matching way, the descaling capacity of the dirt treatment agent is improved, and meanwhile, the growth of dirt on boiler equipment can be delayed, namely, the cleaning period of the boiler can be prolonged, so that the use cost of the boiler is reduced.
In one embodiment, the water circulation dirt treatment agent further comprises 10 parts of bactericidal algicide. By increasing the mass parts of the bactericidal algicide, the proportion of the bactericidal algicide in the dirt treatment agent is improved, the bactericidal and algicide performance of the dirt treatment agent is further improved, and the cleanliness of equipment is improved.
In one embodiment, the rust inhibitor is composed of borate and sodium molybdate in a molar ratio of 1: 1.5. The two rust removers are matched for use, so that the rust removing capability of the rust removers can be improved, and the quality of the dirt treatment agent is further improved.
In one embodiment, the alkanolamine compound consists of diethanolamine and monoethanolamine in a molar ratio of 2: 1. By using the diethanol amine and the monoethanolamine together, the pH value of the fouling treatment agent can be adjusted, the surface tension of the fouling treatment agent can be reduced, the uniformity of the fouling treatment agent can be improved, the oxidation process of a boiler can be delayed, and the service life of the boiler can be prolonged. It can also be understood that the performance of the soil treatment agent can be improved and the market competitiveness of the product can be improved by using diethanolamine in combination with monoethanolamine.
The invention adopts the water circulation dirt treating agents of the embodiments 1 to 4 to respectively carry out the dirt removal operation on four boilers with the same treatment capacity, the same working time and the approximate scale growth thickness, respectively collect the sewage of the dirt removal operation and carry out the pH value measurement, simultaneously adopts the common dirt treating agent with the model of 1227 sold in the market to carry out the dirt removal operation on the boilers with the same treatment capacity, the same working time and the same scale growth thickness as the boiler used as a comparative example, and carries out the pH value measurement on the dirt removal sewage. In addition, the roughness of the inner wall of the pipeline after the descaling operation is measured, and the following comparison table is obtained:
as can be seen from the above table, compared with the common dirt treatment agent sold in the market, the pH value of the wastewater after the dirt removal operation of the dirt treatment agent is alkalescent, the wastewater can be directly discharged, the influence on the environment is small, and the roughness of the inner wall of the pipeline after the dirt removal operation is greatly reduced, that is, the corrosion effect of the dirt removal wastewater on the inner wall of the pipeline is small, so that the service life of the pipeline is prolonged, and the market competitiveness of the dirt treatment agent is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
The invention discloses a water circulation dirt treating agent which comprises the following components in parts by mass: 10-15 parts of weak acid scale remover, 1-10 parts of antirust agent, 1-10 parts of alcohol amine compound, 1-10 parts of antioxidant, 1-8 parts of aluminum antioxidant, 1-5 parts of dispersing agent, 1-5 parts of surfactant, 1-10 parts of scale and corrosion inhibitor, 1-10 parts of dispersing agent, 1-10 parts of EDTMPA and 0.1-0.5 part of defoaming agent. According to the water circulation dirt treating agent, the weak acid scale remover is adopted, and a plurality of components such as a scale and corrosion inhibitor, an antirust agent, an antioxidant and the like are combined, so that when the dirt impurities in equipment are removed, the corrosion effect of the dirt removing sewage on a pipeline is weakened, and the influence of the dirt removing wastewater on the environment is reduced; the descaling wastewater has little corrosion effect on the pipeline, delays the aging rate of the pipeline, reduces the water consumption and the operation cost of the descaling operation, and further improves the market competitiveness of the descaling agent.
Claims (10)
1. The water circulation dirt treating agent is characterized by comprising the following components in parts by mass: 10-15 parts of weak acid scale remover, 1-10 parts of antirust agent, 1-10 parts of alcohol amine compound, 1-10 parts of antioxidant, 1-8 parts of aluminum antioxidant, 1-5 parts of dispersing agent, 1-5 parts of surfactant, 1-10 parts of scale and corrosion inhibitor, 1-10 parts of dispersing agent, 1-10 parts of EDTMPA and 0.1-0.5 part of defoaming agent.
2. The water circulation dirt treating agent of claim 1, wherein the weak acid detergent is one of sodium citrate, citric acid or sodium gluconate.
3. The water circulation dirt treating agent of claim 1, wherein the weak acid detergent is composed of sodium citrate and sodium gluconate in a molar ratio of 1: 1.5.
4. The water circulation fouling treatment agent according to claim 1, which further comprises 1-10 parts of bactericidal algicide.
5. The water circulation fouling treating agent according to claim 1, wherein the rust inhibitor is one or two of borate, sodium molybdate or amide.
6. The water-circulating soil treatment agent according to claim 1, wherein the alcohol amine compound is one or two of triethanolamine, monoethanolamine or diethanolamine.
7. The water circulation dirt treatment agent according to claim 1, characterized in that the antioxidant is benzotriazole.
8. The water-circulating soil treatment agent according to claim 1, wherein the dispersing agent is peregal or n-propanol.
9. The agent for treating water-circulating fouling according to claim 1, wherein the scale and corrosion inhibitor is PESA or PASP.
10. The water-circulating soil treatment agent according to claim 1, wherein the dispersant is acrylate or polyacrylate.
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| CN113292170A (en) * | 2021-06-09 | 2021-08-24 | 西安瑞杰实业股份有限公司 | Anti-hardening agent for blast furnace slag treatment system by bottom filtration method, preparation method and application thereof |
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| CN114057326A (en) * | 2021-11-22 | 2022-02-18 | 三元控股集团杭州热电有限公司 | Water treatment method for steam boiler |
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