CN110921857A - Special scale inhibitor for MVR system and preparation method thereof - Google Patents
Special scale inhibitor for MVR system and preparation method thereof Download PDFInfo
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- CN110921857A CN110921857A CN201911356043.2A CN201911356043A CN110921857A CN 110921857 A CN110921857 A CN 110921857A CN 201911356043 A CN201911356043 A CN 201911356043A CN 110921857 A CN110921857 A CN 110921857A
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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
- C02F5/14—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 phosphorus
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/042—Prevention of deposits
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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
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a special scale inhibitor for an MVR system, which consists of the following raw materials: acrylic acid-styrene sulfonate copolymer, organic phosphonic acid, allyl polyoxyethylene type polycarboxylic acid scale inhibitor, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, adipic acid-amino terminated polyether-diethylenetriamine copolymer, epoxy succinic acid derivative, phosphorus-containing polymer, phosphate starch and pure water. The invention researches the water quality with high temperature, high silicon content and high sulfate radical content of the MVR system to prepare the special scale inhibitor for the MVR system, the scale inhibitor has excellent scale inhibition dispersibility on sulfate, silicate and carbonate, does not influence later crystallization and salt separation, has excellent application effect and production value, and is beneficial to promoting energy conservation and emission reduction, waste salt utilization and zero emission development of enterprises.
Description
Technical Field
The invention belongs to the field of water treatment agents, and particularly relates to a special scale inhibitor for an MVR system and a preparation method thereof.
Background
The water resource is one of the important energy sources for economic development, the contradiction between the high-speed development of the industry and the relative shortage of the water resource is gradually highlighted along with the continuous promotion of the industrialization process, the recycling of a large amount of wastewater in the industrial production becomes an effective means for saving water and protecting the environment, and in order to improve the utilization rate of the water resource and meet the environmental protection requirement, many enterprises adopt devices such as MVR and the like to treat high-hardness wastewater, so that the zero emission is effectively realized.
The scaling of the evaporator means that the concentrated salt wastewater contains a large amount of impurity salt, and crystal nuclei are formed after continuous evaporation and concentration. The crystal nucleus is attached to the inner surface of the heat exchange tube (or surface) to form scale, so that the efficiency of the heat exchanger is influenced, the heat exchange tube is blocked, and the normal operation of the evaporative crystallization device is seriously influenced. The concentrated salt wastewater contains calcium, magnesium ions, sulfate ions, carbonate ions, silicate and the like, and the concentrated salt wastewater is continuously concentrated to achieve co-saturation in the evaporation and crystallization process to generate scale layers of sulfate, carbonate, silicate and the like. After the evaporator and the heat exchanger are scaled, the heat conductivity coefficient is seriously influenced, so that the system can not normally operate. Therefore, once scaling occurs, chemical cleaning is required, which is time-consuming, labor-consuming, and causes corrosion of equipment and environmental pollution. Especially, the MVR system is liable to form sulfate scale and silicate scale, which are generally not easy to clean, and thus the scale inhibitor required for the MVR system must have excellent scale inhibition property and dispersibility for sulfate and silicate scale. Most of the MVR system scale inhibitors in the current market are conventional high-temperature scale inhibitors, and the scale inhibitors have no pertinence to silicate and sulfate scales, so that the treatment effect is not ideal, and especially the effect on inhibiting the silicate scales is poor. And secondly, the use of the conventional scale inhibitor can influence the salt yield, so that the salt is not easy to crystallize and separate out during separation.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide the special scale inhibitor for the MVR system and the preparation method thereof, the obtained special scale inhibitor for the MVR system can efficiently prevent silicate and sulfate scale of the MVR system from being generated, and on the other hand, precipitates or crystals can be effectively dispersed, so that the precipitates or crystals are not adsorbed on the surface of a heat exchanger, and the pertinence is strong.
The technical scheme is as follows: in order to solve the technical problems, the invention provides a special scale inhibitor for an MVR system, which comprises the following raw materials in parts by weight: 5-15 parts of acrylic acid-styrene sulfonic acid copolymer, 15-40 parts of organic phosphonic acid, 15-25 parts of allyl polyoxyethylene type polycarboxylic acid scale inhibitor, 5-15 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, 5-15 parts of adipic acid-amino terminated polyether-diethylenetriamine copolymer, 10-25 parts of epoxy succinic acid derivative, 5-15 parts of phosphorus-containing polymer, 10-15 parts of phosphate starch and 0-30 parts of pure water.
As a further optimization, the organic phosphonic acid is one or more of polyamino polyether methylene phosphonic acid (papamp), hexamethylenediamine tetramethylidene phosphonic acid (HDTMPA), diethylenetriamine pentamethylene phosphonic acid (DTPMPA).
As a further optimization, the allyl polyoxyethylene type polycarboxylic acid scale inhibitor is a maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor.
As a further optimization, the preparation method of the maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor comprises the following steps: mixing and stirring 20 parts by weight of NaOH and 150 parts by weight of distilled water until the NaOH and the distilled water are dissolved, then adding 30 parts by weight of maleic anhydride, adding 10 parts by weight of methyl allyl polyoxyethylene ether after the maleic anhydride is dissolved, heating to 85 ℃, adding 4 parts by weight of sodium hypophosphite, slowly adding ammonium persulfate and acrylic acid, fully stirring during adding, and preserving heat for 1.5 hours to obtain the maleic anhydride-acrylic acid-methyl allyl polyoxyethylene ether scale inhibitor.
As a further optimization, the phosphorus-containing polymer is one or more of phosphorus-based polyacrylic acid and a copolymer thereof, and phosphorus-based polymaleic anhydride and a copolymer thereof.
As further optimization, the special scale inhibitor for the MVR system is prepared from the following raw materials in parts by weight: 5-10 parts of the acrylic acid-styrene sulfonate copolymer, 78-15 parts of the PAPEMP12, 10-15 parts of the HDTMPA, 20-25 parts of the maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor, 5-10 parts of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, 5-10 parts of the adipic acid-amino terminated polyether-diethylenetriamine copolymer, 10-15 parts of the epoxy succinic acid derivative, 5-10 parts of the phosphorus-containing polymer, 10-12 parts of the phosphate starch and 0-18 parts of pure water.
As further optimization, the special scale inhibitor for the MVR system is prepared from the following raw materials in parts by weight: 8-10 parts of the acrylic acid-styrene sulfonic acid copolymer, 13 parts of the PAPEMP, 10-12 parts of the HDTMPA, 20-22 parts of the maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor, 5-8 parts of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, 8-10 parts of the adipic acid-amino terminated polyether-diethylenetriamine copolymer, 10-12 parts of the epoxy succinic acid derivative, 8-10 parts of the phosphorus-containing polymer, 12 parts of the phosphate starch and 0-6 parts of the pure water.
In order to solve the technical problem, the invention provides a preparation method of a special scale inhibitor for an MVR system, which comprises the following steps:
s1, sequentially adding acrylic acid-styrene sulfonic acid copolymer, organic phosphonic acid, maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, adipic acid-amino terminated polyether-diethylenetriamine copolymer, epoxy succinic acid derivative, phosphorus-containing polymer and pure water into a reaction kettle, and uniformly mixing;
s2, slowly adding phosphate ester starch into the reaction kettle from a manhole, heating to 40-55 ℃, and stirring for 20-40 min;
s3, filtering and discharging to obtain the target product.
As a further optimization, of the phosphorus-based polyacrylic acid copolymer
500-1000 of the phosphorus-based polymaleic anhydride copolymer
Is 500 to 1000. Of the acrylic acid-styrene sulfonate copolymer
800-1500, the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer
3000-5000 of the adipic acid-amino terminated polyether-diethylenetriamine copolymer
Is 2000-3500.
The beneficial effects of the invention include: the invention researches the water quality with high temperature, high silicon content and high sulfate radical content of the MVR system to prepare the special scale inhibitor for the MVR system, the scale inhibitor has excellent scale inhibition dispersibility on sulfate, silicate and carbonate, does not influence the crystallization and precipitation of salt, has excellent application effect and production value, and is beneficial to promoting the energy conservation and emission reduction, waste salt utilization and zero emission development of enterprises.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Preparing a maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor:
mixing and stirring 20 parts by weight of NaOH and 150 parts by weight of distilled water until the NaOH and the distilled water are dissolved, then adding 30 parts by weight of maleic anhydride, adding 10 parts by weight of methyl allyl polyoxyethylene ether after the maleic anhydride is dissolved, heating to 85 ℃, adding 4 parts by weight of sodium hypophosphite, slowly adding ammonium persulfate and acrylic acid, fully stirring during adding, and preserving heat for 1.5 hours to obtain the maleic anhydride-acrylic acid-methyl allyl polyoxyethylene ether scale inhibitor.
Example 2
Preparation of a special scale inhibitor for MVR system:
weighing acrylic acid-styrene sulfonic acid copolymer according to weight parts
8 parts of PAPEMP15 parts, HDTMPA10 parts, 20 parts of maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor and acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer
7 parts of adipic acid-amino terminated polyether-diethylenetriamine copolymer
10 parts, 10 parts of epoxy succinic acid derivative and acrylic acid-hydroxypropyl acrylate-sodium hypophosphite copolymer
5 parts of pure water and 0 part of pure water.
Sequentially adding the weighed materials into a reaction kettle, and uniformly mixing; and then slowly adding 12 parts by weight of phosphate ester starch into the reaction kettle from a manhole, heating to 45 ℃, stirring for 20min, filtering, and discharging to obtain the special scale inhibitor for the MVR system.
Example 3
Preparation of a special scale inhibitor for MVR system:
weighing according to the weight portionTaking acrylic acid-styrene sulfonic acid copolymer
5 parts of PAPEMP10 parts, HDTMPA5 parts, 15 parts of maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor and acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer
5 parts of adipic acid-amino terminated polyether-diethylenetriamine copolymer
8 parts of epoxy succinic acid derivative, 15 parts of acrylic acid-maleic acid-phosphorus base copolymer
8 parts of pure water.
Sequentially adding the weighed materials into a reaction kettle, and uniformly mixing; and then slowly adding 10 parts by weight of phosphate ester starch into the reaction kettle from a manhole, heating to 50 ℃, stirring for 30min, filtering, and discharging to obtain the special scale inhibitor for the MVR system.
Example 4
Preparation of a special scale inhibitor for MVR system:
weighing acrylic acid-styrene sulfonic acid copolymer according to weight parts
10 parts of PAPEMP12 parts, HDTMPA 18 parts, DTPMPA10 parts, maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor 20 parts, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer
10 parts of adipic acid-amino terminated polyether-diethylenetriamine copolymer
8 parts of epoxy succinic acid derivative and 10 parts of epoxy succinic acid derivativeAcrylic acid-2-acryloyl-2-methylpropanesulfonic acid-sodium hypophosphite copolymer
8 parts and 15 parts of pure water.
Sequentially adding the weighed materials into a reaction kettle, and uniformly mixing; and then slowly adding 12 parts by weight of phosphate ester starch into the reaction kettle from a manhole, heating to 55 ℃, stirring for 40min, filtering, and discharging to obtain the special scale inhibitor for the MVR system.
Example 5
Preparation of a special scale inhibitor for MVR system:
weighing acrylic acid-styrene sulfonic acid copolymer according to weight parts
5 parts of HDTMPA 25 parts, DTPMPA10 parts, maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor 25 parts, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer
15 parts of adipic acid-amino terminated polyether-diethylenetriamine copolymer
15 parts of epoxy succinic acid derivative, 25 parts of hypophosphorous acid, 15 parts of pure water and 8 parts of pure water.
Sequentially adding the weighed materials into a reaction kettle, and uniformly mixing; and then slowly adding 12 parts by weight of phosphate ester starch into the reaction kettle from a manhole, heating to 50 ℃, stirring for 30min, filtering, and discharging to obtain the special scale inhibitor for the MVR system.
Example 6
Preparation of a special scale inhibitor for MVR system:
weighing acrylic acid-styrene sulfonic acid copolymer according to weight parts
15 parts of PAPEMP15 parts, HDTMPA 20 parts, DTPMPA15 parts, and horse22 parts of maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor and acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer
15 parts of adipic acid-amino terminated polyether-diethylenetriamine copolymer
10 parts of epoxy succinic acid derivative, 12 parts of acrylic acid-hydroxypropyl acrylate-sodium hypophosphite copolymer and 1 part of pure water.
Sequentially adding the weighed materials into a reaction kettle, and uniformly mixing; and then, slowly adding 15 parts by weight of phosphate ester starch into the reaction kettle from a manhole, heating to 50 ℃, stirring for 30min, filtering, and discharging to obtain the special scale inhibitor for the MVR system.
The maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor used in examples 2-6 was prepared by the method of example 1.
Comparative example 1
Weighing 15 parts of ethylene diamine tetramethylene phosphoric acid, 20 parts of diethylenetriamine pentamethylene phosphoric acid, 40 parts of phosphono carboxylic acid copolymer, 15 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-acrylate terpolymer (AA-AMPS-HPA), 22 parts of maleic anhydride-acrylic acid-methallyl polyoxyethylene ether water reducing agent and 10 parts of AA-AMPS according to parts by weight.
The specific preparation method of the scale inhibitor refers to a method disclosed in the literature of ' development of compounding technology of high-temperature resistant scale inhibiting dispersant for coal gasification slag-water system ' published by Yihongqing in coal chemical industry '.
Comparative example 2
22 parts of hydroxyethylidene diphosphate, 6 parts of polymaleic acid, 6 parts of zinc chloride, 5 parts of polybasic phosphate, 1.5 parts of azole derivatives and 59.5 parts of pure water are weighed according to parts by weight.
The hydroxy ethylidene diphosphonic acid is an organic phosphoric acid scale and corrosion inhibitor with the active component of more than 50 percent; the polymaleic acid is hydrolyzed maleic anhydride with the molecular weight of 400-800 and the solid content of 48%; the polyol phosphate is a class A non-nitrogen containing polyol phosphate having a total phosphorus content of greater than 30%; the azole derivative is benzotriazole; zinc chloride is an industrial grade raw material; the water is industrial water.
The hydroxyethylidene diphosphonic acid, the polymaleic acid, the polyalcohol phosphate ester and the water are stirred and mixed, and then the dissolved azole derivatives are added to prepare the composite corrosion and scale inhibitor.
The scale inhibitor special for the MVR system prepared by the invention and the scale inhibitors prepared in comparative examples 1 and 2 are subjected to scale inhibition performance tests (calcium carbonate scale inhibition, calcium sulfate scale inhibition and silicon scale inhibition), and test water is respectively tested by using field concentrated water (the main water quality indexes of the concentrated water are total hardness of 379.62mmol/L, sulfate radical of 64520.04mg/L, chloride ion of 37520.04mg/L, calcium ion of 1697.65mg/L, magnesium ion of 3537.13mg/L, silicate radical of 843.52mg/L and conductivity of 167.51 ms/cm.) and water distribution of the MVR system. Adding medicine concentration: 15mg/L, test temperature 90 +/-5 ℃, and the influence of the medicament on the partial salt is examined on field water, and the test results are shown in tables 1 and 2.
TABLE 1 data of field Water test results
Experimental results show that the special scale inhibitor for the MVR system prepared in the embodiment has excellent scale inhibition performance on calcium carbonate, calcium sulfate and silicate at high temperature, and has little influence on salt separation in the later period.
TABLE 2 Water distribution test result data
Experimental results show that the special scale inhibitor for the MVR system prepared by the embodiment has obvious advantages on the performances of calcium carbonate, calcium sulfate and silicate at high temperature.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention; those skilled in the art can make various changes, modifications and alterations without departing from the scope of the invention, and all equivalent changes, modifications and alterations to the disclosed technology are equivalent embodiments of the present invention; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. The special scale inhibitor for the MVR system is characterized by comprising the following raw materials in parts by weight: 5-15 parts of acrylic acid-styrene sulfonic acid copolymer, 15-40 parts of organic phosphonic acid, 15-25 parts of allyl polyoxyethylene type polycarboxylic acid scale inhibitor, 5-15 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, 5-15 parts of adipic acid-amino terminated polyether-diethylenetriamine copolymer, 10-25 parts of epoxy succinic acid derivative, 5-15 parts of phosphorus-containing polymer, 10-15 parts of phosphate starch and 0-30 parts of pure water.
2. The scale inhibitor of claim 1, wherein the organic phosphonic acid is one or more of polyamino polyether methylene Phosphonic Acid (PAPEMP), hexamethylenediamine tetramethylidene phosphonic acid (HDTMPA), diethylenetriamine pentamethylene phosphonic acid (DTPMPA).
3. The special scale inhibitor for MVR system according to claim 1, wherein said allylpolyoxyethylenated polycarboxylic acid scale inhibitor is maleic anhydride-acrylic acid-methallylpolyoxyethylenated ether scale inhibitor.
4. The special scale inhibitor for the MVR system according to claim 3, wherein the preparation method of the maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor comprises the following steps: mixing and stirring 20 parts by weight of NaOH and 150 parts by weight of distilled water until the NaOH and the distilled water are dissolved, then adding 30 parts by weight of maleic anhydride, adding 10 parts by weight of methyl allyl polyoxyethylene ether after the maleic anhydride is dissolved, heating to 85 ℃, adding 4 parts by weight of sodium hypophosphite, slowly adding ammonium persulfate and acrylic acid, fully stirring during adding, and preserving heat for 1.5 hours to obtain the maleic anhydride-acrylic acid-methyl allyl polyoxyethylene ether scale inhibitor.
5. The special scale inhibitor for MVR system according to claim 1, wherein said phosphorus-containing polymer is one or more of phosphorus-based polyacrylic acid and its copolymer, phosphorus-based polymaleic anhydride and its copolymer.
6. The special scale inhibitor for the MVR system according to claim 1, which is prepared from the following raw materials in parts by weight: 5-10 parts of the acrylic acid-styrene sulfonate copolymer, 78-15 parts of the PAPEMP12, 10-15 parts of the HDTMPA, 20-25 parts of the maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor, 5-10 parts of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, 5-10 parts of the adipic acid-amino terminated polyether-diethylenetriamine copolymer, 10-15 parts of the epoxy succinic acid derivative, 5-10 parts of the phosphorus-containing polymer, 10-12 parts of the phosphate starch and 0-18 parts of pure water.
7. The special scale inhibitor for the MVR system according to claim 1, which is prepared from the following raw materials in parts by weight: 8-10 parts of the acrylic acid-styrene sulfonic acid copolymer, 13 parts of the PAPEMP, 10-12 parts of the HDTMPA, 20-22 parts of the maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor, 5-8 parts of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, 8-10 parts of the adipic acid-amino terminated polyether-diethylenetriamine copolymer, 10-12 parts of the epoxy succinic acid derivative, 8-10 parts of the phosphorus-containing polymer, 12 parts of the phosphate starch and 0-6 parts of the pure water.
8. The preparation method of the special scale inhibitor for MVR system according to any one of claims 1 to 7, characterized by comprising the following steps:
s1, sequentially adding acrylic acid-styrene sulfonic acid copolymer, organic phosphonic acid, maleic anhydride-acrylic acid-methallyl polyoxyethylene ether scale inhibitor, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-N-tert-butyl acrylamide terpolymer, adipic acid-amino terminated polyether-diethylenetriamine copolymer, epoxy succinic acid derivative, phosphorus-containing polymer and pure water into a reaction kettle, and uniformly mixing;
s2, slowly adding phosphate ester starch into the reaction kettle from a manhole, heating to 40-55 ℃, and stirring for 20-40 min;
s3, filtering and discharging to obtain the target product.
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| CN112499780A (en) * | 2020-11-25 | 2021-03-16 | 山东天庆科技发展有限公司 | High-temperature-resistant scale inhibition and dispersion agent and preparation method thereof |
| CN113912195A (en) * | 2021-11-10 | 2022-01-11 | 山东天庆科技发展有限公司 | Non-phosphorus scale inhibitor for inhibiting silicon scale and preparation method thereof |
| CN116622024A (en) * | 2022-10-10 | 2023-08-22 | 广东浪淘砂新型材料有限公司 | High-concentration scale inhibitor for cement-based high-alkali environment sensor and preparation method thereof |
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Application publication date: 20200327 |