CN111233174B - Scale inhibition powder, preparation method and application thereof - Google Patents
Scale inhibition powder, preparation method and application thereof Download PDFInfo
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- CN111233174B CN111233174B CN201811435718.8A CN201811435718A CN111233174B CN 111233174 B CN111233174 B CN 111233174B CN 201811435718 A CN201811435718 A CN 201811435718A CN 111233174 B CN111233174 B CN 111233174B
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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
- C02F5/105—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 combined with inorganic substances
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention provides scale inhibition powder, a preparation method and application thereof, wherein the scale inhibition powder comprises a scale inhibition material subjected to hydrophobic treatment by a surfactant, and the scale inhibition material comprises a scale inhibitor and a mesoporous material for encapsulating the scale inhibitor; the preparation method of the scale inhibiting powder comprises the following steps: (1) adding the mesoporous material into a scale inhibitor aqueous solution, mixing, performing solid-liquid separation, and drying to obtain a dried substance; (2) adding a surfactant into the dried substance prepared in the step (1) under a stirring state, and reacting to obtain the scale inhibition powder; the scale inhibition powder prepared by the invention has good slow release effect, can control the release rate, has long-acting property, simple preparation process and low cost, and can be applied to water scale inhibition treatment.
Description
Technical Field
The invention relates to the field of water treatment chemicals, and relates to scale inhibition powder, a preparation method and application thereof.
Background
Along with the increase of population and pollution caused by the industrial process, the water body circulation use period is accelerated, a large amount of underground water has to be excessively collected to ensure that the hardness of tap water is higher and higher, the water hardness in northern areas of China is up to 500ppm according to investigation, the high-hardness water is poor in taste when boiled and drunk, and the kettle bottom is often scaled, so that diseases such as gastrointestinal function disorder, kidney stone and the like are easily caused by long-term drinking of the high-hardness water. The drinking water descaling method used in the market at present mainly comprises a physical method and a chemical method: the physical method mainly utilizes physical methods such as a magnetic field, an electric field and the like to soften water quality, but the physical method has more common descaling performance, is difficult to apply to high-hardness water quality in the north and needs to consume larger electric energy. The chemical method mainly softens the water body through ion exchange, but has the defects of small resin exchange equivalent, high regeneration cost and the like.
Industrial water is mostly applied to low-cost water treatment scale inhibitors, and the scale inhibitors are liquid or easily soluble in water powder crystals, so that the scale inhibitors are generally applied to industrial circulating water in a throwing mode and are difficult to apply to household water.
CN101700937A discloses a composite scale inhibitor for high-hardness high-alkali industrial circulating water, which is composed of HEDP, polyaspartic acid, polymaleic anhydride, polyacrylic acid dispersant and the like, wherein the polyacrylic acid dispersant can be one or more of polyacrylic acid ternary dispersants, and can also be one or more of quaternary dispersants. The composite scale inhibitor prepared by the invention has excellent scale inhibition performance, but the slow release performance is not mentioned.
CN108002552A discloses a water purification and scale inhibition material and a preparation method thereof, wherein the preparation method comprises the following steps: (1) mixing a precursor composed of biomass as a solute and water as a solvent to obtain a precursor solution; (2) dripping the precursor into the crosslinking solution, crosslinking in the crosslinking solution, and fishing out the crosslinked body after crosslinking; (3) and (3) placing the crosslinking body in a post-crosslinking liquid for continuously crosslinking for a period of time, and drying after crosslinking to obtain the water purification scale inhibition material. The water purification scale inhibition material prepared by the invention has the advantages of low cost, safety, environmental protection, long scale inhibition life and the like, but the slow release function is not disclosed.
CN107032509A discloses a terpolymer concentrated slow-release scale inhibitor and a preparation method thereof, the molecular formula of the terpolymer is as follows, wherein, x: y: z is (1-2) and (2-3) is (0.5-1), the preparation method of the terpolymer concentrated slow-release scale inhibitor comprises the steps of firstly, preparing maleic anhydride into an aqueous solution, and adding a catalyst aqueous solution; step two, slowly adding acrylic acid and an ammonium persulfate aqueous solution into the system prepared in the step one, and starting heating and refluxing; step three, after the reaction in the step two is finished, slowly adding a 2-acrylamide-2-methylpropanesulfonic acid solution into the reaction system in the step two, and keeping the temperature in the step two unchanged to continue reflux reaction; and step four, after the reaction in the step three is finished, adding polyvinyl alcohol, stirring until the polyvinyl alcohol is dissolved, and then placing the reaction solution in an oven for drying to obtain the product. The scale inhibitor prepared by the invention has better scale inhibition performance and slow release performance, but the long-acting performance of the slow release effect of the scale inhibitor is to be improved.
Therefore, the development of the scale inhibition powder which has strong scale removal capacity, can effectively control the slow release speed and the release speed and is convenient for being put into families for use is still a hot spot of research in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide scale inhibition powder, a preparation method and application thereof, wherein the scale inhibition powder has a good slow release effect, can control slow release speed and release concentration by different compounding ratios and processes, has good slow release effect and long-acting property as the release concentration of effective components in drinking water is 0.01-2.0mg/L, is simple in preparation process and low in cost, is used for scale inhibition treatment of water quality, is particularly suitable for scale inhibition treatment of household drinking water purification equipment such as RO (reverse osmosis) equipment, ultrafiltration membranes, ceramic membranes and the like, and has great benefits for prolonging the service life of a filtration membrane, reducing wastewater discharge and even realizing zero wastewater discharge after the water efficiency standard of drinking water purification equipment is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
one purpose of the invention is to provide scale inhibition powder, which comprises a scale inhibition material subjected to hydrophobic treatment by a surfactant, wherein the scale inhibition material comprises a scale inhibitor and a mesoporous material for encapsulating the scale inhibitor.
The scale inhibition powder prepared by the invention has good slow release effect, can control the release efficiency and has long-lasting effect.
In the invention, the scale inhibitor is any one or a combination of at least two of polyaspartic acid, polyaspartic acid modifier, polyacrylic acid modifier, citric acid modifier, polymaleic anhydride or polymaleic anhydride modifier, and preferably the combination of polyaspartic acid and polyacrylic acid.
In the present invention, the mass ratio of polyaspartic acid to polyacrylic acid is 1:1 to 3:1, such as 1:1, 1.5:1, 2:1, 2.5:1, 3:1, etc.
The selected polyaspartic acid and polyacrylic acid are matched with each other, and the scale inhibition effect of the scale inhibitor can be improved under the synergistic effect; when only any one of the above is selected, the scale inhibition effect is reduced; when the mass ratio of the two is not in the range of 1:1-3:1, the scale inhibition effect is also reduced; when other scale inhibitors or the compounding of other scale inhibitors are selected, the scale inhibition effect is poor.
In the present invention, the mass ratio of the liquid scale inhibitor to the mesoporous material is 1:1-5:1, for example, 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1, 4.5:1, 5:1, etc.
If the mass ratio of the scale inhibitor to the mesoporous material is lower than 1:1, the mesoporous material is wasted; if the mass ratio of the scale inhibitor to the mesoporous material is higher than 5:1, part of the scale inhibitor cannot be coated, and the slow release effect is influenced.
In the present invention, the mesh number of the mesoporous material is 80 to 1000 mesh, for example, 80 mesh, 100 mesh, 200 mesh, 300 mesh, 400 mesh, 500 mesh, 600 mesh, 700 mesh, 800 mesh, 900 mesh, 1000 mesh, and the like.
In the invention, the mesoporous material is any one or a combination of at least two of a silicon mesoporous material, diatomite, activated carbon, zeolite powder, attapulgite or montmorillonite.
The mesoporous material is selected as the slow release carrier, so that the mesoporous material has the advantages of regular pore channel structure and large specific surface area, and the pore channel and the scale inhibitor entering the pore channel form inclusion, so that the performance of the scale inhibitor is improved, the aim of slowly releasing scale inhibition active ingredients is fulfilled, and the slow release effect is achieved; when the mesh number of the selected mesoporous material is lower, the slow release effect is poorer, and when the mesh number of the mesoporous material is too high, the price is high, so that the application of industrial production is not facilitated.
In the invention, the surfactant is any one or a combination of at least two of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent or stearic acid.
The invention selects the surfactant to carry out hydrophobic treatment on the scale inhibition material, thereby increasing the long-acting property of the scale inhibitor.
The invention also aims to provide a preparation method of the scale inhibiting powder, which comprises the following steps:
(1) adding the mesoporous material into a scale inhibitor aqueous solution, mixing, performing solid-liquid separation, and drying to obtain a dried substance;
(2) and (2) adding a surfactant into the dried substance prepared in the step (1) under a stirring state, and reacting to obtain the scale inhibition powder.
The scale inhibiting powder prepared by the invention has good slow release effect, can control the release rate and has long-acting property by performing adsorption extraction and hydrophobic treatment on the scale inhibitor, and the preparation process is simple and has wider application range, and the production cost is greatly reduced.
In the present invention, the concentration of the aqueous solution of the scale inhibitor in step (1) is 10% to 50%, for example, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc.
In the invention, the aqueous solution of the scale inhibitor in the step (1) is obtained by dissolving the scale inhibitor in deionized water.
In the present invention, the mixing in step (1) is carried out under stirring.
In the present invention, the stirring time is 0.5 to 2 hours, such as 0.5 hour, 0.8 hour, 1 hour, 1.3 hour, 1.5 hour, 1.8 hour, 2 hours and the like.
In the present invention, the drying temperature in step (1) is 60 to 80 ℃, for example, 60 ℃, 62 ℃, 65 ℃, 67 ℃, 70 ℃, 72 ℃, 75 ℃, 78 ℃, 80 ℃ and the like.
In the invention, the addition amount of the surfactant in the step (2) is 3-10% of the weight of the dry matter prepared in the step (1).
In the present invention, the stirring speed in step (2) is 400-600r/min, such as 400r/min, 450r/min, 500r/min, 550r/min, 600r/min, etc.
In the present invention, the reaction temperature in the step (2) is 80 to 120 ℃, for example, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃ and the like.
In the present invention, the reaction time in step (2) is 0.5 to 3 hours, such as 0.5 hour, 0.8 hour, 1 hour, 1.3 hour, 1.5 hour, 1.8 hour, 2 hour, 2.3 hour, 2.5 hour, 2.8 hour, 3 hour, etc.
As a preferable scheme of the invention, the preparation method comprises the following steps:
(1) dissolving a scale inhibitor in deionized water to obtain a 10-50% scale inhibitor aqueous solution, adding a mesoporous material into the scale inhibitor aqueous solution, mixing for 0.5-2h under stirring, performing solid-liquid separation, and drying at 60-80 ℃ to obtain a dried substance, wherein the mass ratio of the mesoporous material to the scale inhibitor is 1:1-5: 1;
(2) adding a surfactant into the dry matter prepared in the step (1) under the condition that the stirring speed is 400-600r/min, wherein the weight of the surfactant is 3-10% of the weight of the dry matter, and reacting for 0.5-3h at the temperature of 80-120 ℃ to obtain the scale inhibition powder.
The invention also aims to provide the application of the scale inhibition powder as one of the purposes, and the application is applied to water scale inhibition treatment, especially the application in household water.
Compared with the prior art, the invention has the following beneficial effects:
the scale inhibitor is subjected to adsorption extraction and hydrophobic treatment, so that the prepared scale inhibition powder has a good scale inhibition effect (the scale inhibition rate of calcium carbonate can reach 92 percent) and a slow release effect, can control the release rate (the cumulative release rate of 24 hours is as low as 1.8 percent), and has long-acting performance (the number of slow release days can reach 88 days); the preparation process is simple, has a wider application range, greatly reduces the production cost, and is suitable for industrial large-scale production.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment provides scale inhibition powder, which comprises a scale inhibition material subjected to hydrophobic treatment by a surfactant, wherein the scale inhibition material comprises a scale inhibitor and a mesoporous material coated on the scale inhibitor; wherein the scale inhibitor is a combination of polyaspartic acid and polyacrylic acid; the mass ratio of the polyaspartic acid to the polyacrylic acid is 1.5: 1; the mesoporous material is pure silicon MCM-41; the mesh number of the pure silicon MCM-41 is 500 meshes; the mass ratio of the scale inhibitor to the mesoporous material is 1: 1; the surfactant is a titanate coupling agent.
The preparation method of the scale inhibition powder comprises the following steps:
(1) mixing 75g of polyaspartic acid and 50g of polyacrylic acid, dissolving in 200g of deionized water to obtain a 38% scale inhibitor aqueous solution, adding 125g of pure silicon MCM-41 into the scale inhibitor aqueous solution, mixing for 1h under the condition of stirring, carrying out solid-liquid separation, and drying at 70 ℃ to obtain a dried substance;
(2) and (2) adding a titanate coupling agent accounting for 5 percent of the weight of the dried substance into the dried substance prepared in the step (1) under the condition of stirring speed of 500r/min, and reacting for 1h at 100 ℃ to obtain the scale inhibition powder.
Example 2
The embodiment provides scale inhibition powder, which comprises a scale inhibition material subjected to hydrophobic treatment by a surfactant, wherein the scale inhibition material comprises a scale inhibitor and a mesoporous material coated on the scale inhibitor; wherein the scale inhibitor is a combination of polyaspartic acid and polyacrylic acid; the mass ratio of the polyaspartic acid to the polyacrylic acid is 1: 1; the mesoporous material is diatomite; the mesh number of the diatomite is 200 meshes; the mass ratio of the scale inhibitor to the mesoporous material is 5: 1; the surfactant is an aluminate coupling agent.
The preparation method of the scale inhibition powder comprises the following steps:
(1) mixing 50g of polyaspartic acid and 50g of polyacrylic acid, dissolving the mixture in 200g of deionized water to obtain a scale inhibitor aqueous solution with the concentration of 50%, then adding 20g of diatomite into the scale inhibitor aqueous solution, mixing for 0.5h under the stirring condition, carrying out solid-liquid separation, and drying at 60 ℃ to obtain a dried substance;
(2) and (2) adding an aluminate coupling agent accounting for 3 percent of the weight of the dried substance into the dried substance prepared in the step (1) under the condition of stirring speed of 400r/min, and reacting for 3 hours at 80 ℃ to obtain the scale inhibition powder.
Example 3
The embodiment provides scale inhibition powder, which comprises a scale inhibition material subjected to hydrophobic treatment by a surfactant, wherein the scale inhibition material comprises a scale inhibitor and a mesoporous material coated on the scale inhibitor; wherein the scale inhibitor is a combination of polyaspartic acid and polyacrylic acid; the mass ratio of the polyaspartic acid to the polyacrylic acid is 3: 1; the mesoporous material is activated carbon; the mesh number of the active carbon is 1000 meshes; the mass ratio of the scale inhibitor to the mesoporous material is 3: 1; the surfactant is stearic acid.
The preparation method of the scale inhibition powder comprises the following steps:
(1) mixing 90g of polyaspartic acid and 30g of polyacrylic acid, dissolving the mixture in 1200g of deionized water to obtain a 10% scale inhibitor aqueous solution, adding 40g of activated carbon into the scale inhibitor aqueous solution, mixing for 2 hours under the condition of stirring, carrying out solid-liquid separation, and drying at 80 ℃ to obtain a dried substance;
(2) adding stearic acid with 10% of the weight of the dry matter into the dry matter prepared in the step (1) under the condition of stirring speed of 600r/min, and reacting for 0.5h at 120 ℃ to obtain the scale inhibition powder.
Example 4
The embodiment provides scale inhibition powder, which comprises a scale inhibition material subjected to hydrophobic treatment by a surfactant, wherein the scale inhibition material comprises a scale inhibitor and a mesoporous material coated on the scale inhibitor; wherein the scale inhibitor is a combination of polyaspartic acid and polyacrylic acid; the mass ratio of the polyaspartic acid to the polyacrylic acid is 3: 1; the mesoporous material is zeolite powder; the mesh number of the zeolite powder is 80 meshes; the mass ratio of the scale inhibitor to the mesoporous material is 2: 1; the surfactant is a silane coupling agent.
The preparation method of the scale inhibition powder comprises the following steps:
(1) mixing 90g of polyaspartic acid and 30g of polyacrylic acid, dissolving in 240g of deionized water to obtain a scale inhibitor aqueous solution with the concentration of 50%, then adding 60g of zeolite powder into the scale inhibitor aqueous solution, mixing for 2 hours under the stirring condition, carrying out solid-liquid separation, and drying at 80 ℃ to obtain a dried substance;
(2) pouring 90g of ethanol and 10g of water into a water cup, adjusting the pH value to 5.5 by using glacial acetic acid, adding a silane coupling agent with the mass being 5% of the mass of the dry matter for hydrolysis, adding the mixture into the dry matter prepared in the step (1) under the condition that the stirring speed is 600r/min, reacting for 1h at 100 ℃, and then carrying out solid-liquid separation and drying to obtain the scale inhibition powder.
Example 5
The difference from the example 1 is only that the mass ratio of the polyaspartic acid to the polyacrylic acid is 4:1, namely the mass of the polyaspartic acid is 100g, the mass of the polyacrylic acid is 25g, and the rest components and the component proportions as well as the preparation method are the same as the example 1.
Example 6
The difference from example 1 is only that the mass ratio of the polyaspartic acid to the polyacrylic acid is 1:1.5, namely, the polyaspartic acid is 50g and the polyacrylic acid is 75g, and the rest components and the component ratio and the preparation method are the same as example 1.
Example 7
The difference from the example 1 is only that the mesh number of the pure silicon MCM-41 is 30 meshes, and the rest components and the component distribution ratio and the preparation method are the same as the example 1.
Example 8
The difference from example 1 is only that the mass ratio of polyaspartic acid and polyacrylic acid to pure silicon MCM-41 is 8:1, namely the mass of pure silicon MCM-41 is 15.63g, and the rest components and the component distribution ratio and the preparation method are the same as example 1.
Example 9
The difference from example 1 is only that the scale inhibitor of the present example does not include polyacrylic acid, and the amount of polyaspartic acid added is the sum of the amounts of polyaspartic acid and polyacrylic acid added in example 1, and is divided by a proportion, and the amount of polyaspartic acid added is 125 g.
Example 10
The scale inhibitor is different from the scale inhibitor in the embodiment 1 only in that the scale inhibitor does not contain polyaspartic acid, and the addition amount of polyacrylic acid is the sum of the addition amounts of polyaspartic acid and polyacrylic acid in the embodiment 1 and is distributed according to a proportion, and the addition amount of polyacrylic acid is 125 g.
Example 11
The only difference from example 1 is that the amount of citric acid added was 125g, instead of the sum of the amounts of polyaspartic acid and polyacrylic acid added in example 1, the citric acid was dispensed in a proportion.
Example 12
The difference from example 1 is only that the amount of polyaspartic acid and polyacrylic acid added in example 1 is replaced by the same amount of polymaleic anhydride, which is distributed proportionally to 125 g.
Comparative example 1
The difference from example 1 is that the raw materials for preparing the scale inhibiting powder do not include the mesoporous material, and the rest components and the component ratio and the preparation method are the same as those of example 1.
Comparative example 2
The difference from the example 1 is only that the raw materials for preparing the scale inhibiting powder do not include the surfactant, and the rest components and the component proportion and the preparation method are the same as those of the example 1.
The scale inhibition powders provided in examples 1 to 9 and comparative examples 1 to 2 were tested for scale inhibition rate and release performance by the following methods:
scale inhibition rate: measuring according to GB/T16632-2008 'calcium carbonate deposition method for measuring scale inhibition performance of water treatment agent';
TABLE 1
The results in table 1 show that the scale inhibition powder prepared by the invention has good scale inhibition effect and slow release effect; as is clear from the comparison between examples 1 to 4 and examples 5 to 6, when the mass ratio of polyaspartic acid to polyacrylic acid in the raw materials is out of the range defined in the present invention, the scale inhibition rate of the prepared scale inhibiting powder to calcium carbonate becomes low, that is, the scale inhibiting performance becomes poor; as can be seen from the comparison between examples 1 to 4 and example 7, when the mesh number of the mesoporous material in the raw material is lower than the range defined by the present invention, the cumulative release rate of the prepared scale inhibiting powder after 24 hours becomes high, and the number of days of slow release decreases, i.e., the slow release performance becomes poor; from the comparison between examples 1 to 4 and example 8, when the mass ratio of the scale inhibitor to the mesoporous material in the raw material is not within the range defined by the present invention, the cumulative release rate of the prepared scale inhibiting powder after 24 hours becomes high, and the number of days of slow release decreases, i.e., the slow release performance becomes poor; as is clear from the comparison between example 1 and examples 9 to 10, when one of polyaspartic acid or polyacrylic acid is absent in the raw material, the scale inhibition rate of the prepared scale inhibiting powder to calcium carbonate becomes low, that is, the scale inhibiting performance becomes poor; as can be seen from the comparison between example 1 and examples 11 to 12, when other scale inhibitors are used in the raw materials instead of polyaspartic acid or polyacrylic acid, the scale inhibition rate of the prepared scale inhibiting powder to calcium carbonate becomes low, i.e., the scale inhibiting performance becomes poor; as can be seen from the comparison between the examples and comparative examples 1-2, when no mesoporous material or surfactant is added to the raw materials, the cumulative release rate of the prepared scale inhibition powder after 24 hours is high, and the number of days of slow release is reduced, i.e., the slow release performance is deteriorated; therefore, the technical scheme of the scale inhibition powder provided by the invention can ensure that the scale inhibition powder has better scale inhibition performance and slow release effect.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The scale inhibition powder is characterized by comprising a scale inhibition material subjected to hydrophobic treatment by a surfactant, wherein the scale inhibition material comprises a scale inhibitor and a mesoporous material for encapsulating the scale inhibitor;
the scale inhibitor is a combination of polyaspartic acid and polyacrylic acid;
the mass ratio of the scale inhibitor to the mesoporous material is 1:1-5: 1;
the mesh number of the mesoporous material is 80-1000 meshes;
the surfactant is any one or the combination of at least two of silane coupling agent, titanate coupling agent, aluminate coupling agent or stearic acid;
the scale inhibiting powder is prepared by adopting the following method, and the method comprises the following steps:
(1) adding the mesoporous material into a scale inhibitor aqueous solution, mixing, carrying out solid-liquid separation, and drying to obtain a dried substance;
(2) adding a surfactant into the dried substance obtained in the step (1) under the condition that the stirring speed is 400-600r/min, wherein the weight of the surfactant is 3-10% of the weight of the dried substance, and reacting at 80-120 ℃ for 0.5-3h to obtain the scale inhibition powder.
2. The scale inhibiting powder of claim 1, wherein the mass ratio of polyaspartic acid to polyacrylic acid is 1:1-3: 1.
3. The scale inhibiting powder according to claim 1, wherein the mesoporous material is any one or a combination of at least two of a silicon-based mesoporous material, diatomite, activated carbon, zeolite powder, attapulgite or montmorillonite.
4. The method for preparing the scale inhibiting powder according to any one of claims 1 to 3, wherein the method comprises the following steps:
(1) adding the mesoporous material into a scale inhibitor aqueous solution, mixing, performing solid-liquid separation, and drying to obtain a dried substance;
(2) adding a surfactant into the dried substance obtained in the step (1) under the condition that the stirring speed is 400-600r/min, wherein the weight of the surfactant is 3-10% of the weight of the dried substance, and reacting at 80-120 ℃ for 0.5-3h to obtain the scale inhibition powder.
5. The method for preparing the scale inhibiting powder according to claim 4, wherein the concentration of the aqueous solution of the scale inhibitor in the step (1) is 10-50%.
6. The method for preparing the scale inhibiting powder according to claim 5, wherein the aqueous solution of the scale inhibitor in the step (1) is obtained by dissolving the scale inhibitor in deionized water.
7. The method for preparing the scale inhibiting powder according to claim 4, wherein the mixing in the step (1) is performed under stirring.
8. The method for preparing the scale inhibiting powder according to claim 7, wherein the stirring time is 0.5-2 h.
9. The method for preparing the scale inhibiting powder according to claim 4, wherein the drying temperature in the step (1) is 60-80 ℃.
10. Use of the scale inhibiting powder of any one of claims 1-3 in water scale inhibition treatment.
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| CN112919653A (en) * | 2021-01-22 | 2021-06-08 | 广东巴沃夫环保科技有限公司 | Solid water treatment agent |
| CN115159699B (en) * | 2022-07-15 | 2024-09-10 | 深圳市飞白科技有限公司 | Scale inhibition composite material and preparation method thereof |
| CN116969611B (en) * | 2023-09-22 | 2024-01-23 | 杭州尚善若水环保科技有限公司 | Corrosion and scale inhibition mixture and application thereof |
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| CN108002554A (en) * | 2017-11-09 | 2018-05-08 | 王林双 | The preparation method and slow-release scale inhibitor of a kind of slow-release scale inhibitor |
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| CN102786159A (en) * | 2012-08-09 | 2012-11-21 | 艾欧史密斯(中国)热水器有限公司 | Combined scale inhibitor and scale inhibition device |
| CN105152365A (en) * | 2015-07-31 | 2015-12-16 | 潍坊友容实业有限公司 | Scale inhibitor for environment friendly seawater desalination membrane and usage method thereof |
| CN108002554A (en) * | 2017-11-09 | 2018-05-08 | 王林双 | The preparation method and slow-release scale inhibitor of a kind of slow-release scale inhibitor |
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Denomination of invention: A scale inhibiting powder, its preparation method, and use Effective date of registration: 20230727 Granted publication date: 20220823 Pledgee: Ping An Bank Co.,Ltd. Dongguan Branch Pledgor: DONGGUAN BEYCLEAN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2023980050006 |