CN112320976A - Phosphorus-free scale inhibitor for industrial circulating water and preparation method and application thereof - Google Patents
Phosphorus-free scale inhibitor for industrial circulating water and preparation method and application thereof Download PDFInfo
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- CN112320976A CN112320976A CN202010897523.6A CN202010897523A CN112320976A CN 112320976 A CN112320976 A CN 112320976A CN 202010897523 A CN202010897523 A CN 202010897523A CN 112320976 A CN112320976 A CN 112320976A
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- scale inhibitor
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 239000002455 scale inhibitor Substances 0.000 title claims abstract description 71
- 238000002360 preparation method Methods 0.000 title claims description 13
- 239000002994 raw material Substances 0.000 claims abstract description 51
- 229920001577 copolymer Polymers 0.000 claims abstract description 42
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 30
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims abstract description 29
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims abstract description 29
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920000805 Polyaspartic acid Polymers 0.000 claims abstract description 19
- 239000008367 deionised water Substances 0.000 claims abstract description 19
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 19
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 19
- 229920001529 polyepoxysuccinic acid Polymers 0.000 claims abstract description 19
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000005764 inhibitory process Effects 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 24
- 239000000178 monomer Substances 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 8
- 239000011976 maleic acid Substances 0.000 claims description 8
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid group Chemical group C(\C=C/C(=O)O)(=O)O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 8
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 22
- 239000011574 phosphorus Substances 0.000 abstract description 22
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000498 cooling water Substances 0.000 description 7
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 4
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a phosphorus-free scale inhibitor for industrial circulating water, which comprises the following raw materials in percentage by mass: 25-35% of maleic acid-acrylic acid copolymer, 34-47% of AA-AMPS copolymer, 3.5-6.5% of polyaspartic acid, 3.5-6.5% of polyepoxysuccinic acid and the balance of deionized water, wherein the sum of the mass percentages of all the raw materials is 100%; the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid. The phosphorus-free scale inhibitor for the industrial circulating water is prepared by selecting raw materials, optimizes the content of each raw material, reduces the use variety of the raw materials, optimizes the cost of the raw materials, has good scale inhibition effect on the industrial circulating water, and is equivalent to the phosphorus-containing scale inhibitor for the industrial circulating water; the cost is lower than that of the phosphorus-containing scale inhibitor for industrial circulating water; in addition, the phosphorus-free scale inhibitor for industrial circulating water does not contain phosphorus.
Description
Technical Field
The invention relates to the field of scale inhibitors, and particularly relates to a phosphorus-free scale inhibitor for industrial circulating water and a preparation method and application thereof.
Background
Industrial circulating water is mainly used in cooling water systems, and is also called circulating cooling water. Because the industrial cooling water accounts for more than 90 percent of the total water consumption. The household circulating water is mainly used on a water heater.
The circulating cooling water is divided into a closed type (closed type) and an open type. In a closed cooling water system, cooling water is not exposed to air, water loss is little, and the contents of various minerals and ions in the water are not changed generally. In the open circulating water system, the water is re-cooled by the cooling tower, so that the cooling water is contacted with air in the recycling process, part of water is evaporated and lost when passing through the cooling tower, and the content of various minerals and ions in the water is concentrated and increased.
The circulating water consists of a circulating pump, a control system, a one-way valve and the like, and the circulating water, the water heater, the hot water main pipe and the hot water return pipe form a complete hot water circulating system; the working principle is that a control system gives a signal to a circulating pump, the circulating pump drives water to circulate inside to start a water heater to heat, the water heater stops working when a set time or temperature is reached, and existing hot water is started at a hot water using point.
However, the currently used scale inhibitors for industrial circulating water have the following problems:
1. the scale inhibitor is usually a phosphorus-containing scale inhibitor, and the industrial circulating water has large scale inhibitor consumption, so that the phosphorus content in sewage discharged into the environment is over standard, water bodies are polluted, and the environment is not protected;
2. the phosphorus-free scale inhibitor has unsatisfactory scale inhibition effect, is greatly different from the phosphorus-containing scale inhibitor, and has complex components and high raw material and preparation cost.
Based on the situation, the invention provides a phosphorus-free scale inhibitor for industrial circulating water and a preparation method and application thereof, and the problems can be effectively solved.
Disclosure of Invention
The invention aims to provide a phosphorus-free scale inhibitor for industrial circulating water and a preparation method and application thereof. The phosphorus-free scale inhibitor for industrial circulating water is prepared by selecting raw materials, optimizing the content of each raw material, selecting a proper amount of maleic acid-acrylic acid copolymer and AA-AMPS copolymer, preferably selecting maleic acid-acrylic acid copolymer with the molar ratio of monomer units of maleic acid to acrylic acid of 1: 2.01-2.06; preferably, the molar ratio of the monomer units of the AA-AMPS copolymer, namely acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid, is 1: 0.23 to 0.28; the phosphorus-free scale inhibitor for the industrial circulating water has a good scale inhibition effect on the industrial circulating water, is equivalent to the phosphorus-containing scale inhibitor for the industrial circulating water, can save scale inhibition time, and improves the utilization rate and the circulating efficiency of the circulating water; the cost is lower than that of the phosphorus-containing scale inhibitor for industrial circulating water; in addition, the phosphorus-free scale inhibitor for industrial circulating water disclosed by the invention does not contain components such as phosphorus and the like, is used for inhibiting the scale of the circulating water, and does not contain phosphorus in sewage discharged into the environment, so that a water body is not polluted, and the environment is protected.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
25-35% of maleic acid-acrylic acid copolymer,
34-47% of AA-AMPS copolymer,
3.5 to 6.5 percent of polyaspartic acid,
3.5-6.5% of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
The phosphorus-free scale inhibitor for industrial circulating water is prepared by selecting raw materials, optimizes the content of each raw material, reduces the use variety of the raw materials, optimizes the cost of the raw materials, has good scale inhibition effect on the industrial circulating water, is equivalent to the phosphorus-containing scale inhibitor for the industrial circulating water, can save scale inhibition time, and improves the utilization rate and the circulating efficiency of the circulating water; the cost is lower than that of the phosphorus-containing scale inhibitor for industrial circulating water; in addition, the phosphorus-free scale inhibitor for industrial circulating water disclosed by the invention does not contain components such as phosphorus and the like, is used for inhibiting the scale of the circulating water, and does not contain phosphorus in sewage discharged into the environment, so that a water body is not polluted, and the environment is protected.
Preferably, the phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
27-33% of maleic acid-acrylic acid copolymer,
38-44% of AA-AMPS copolymer,
4.5 to 5.5 percent of polyaspartic acid,
4.8-5.8% of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
30 percent of maleic acid-acrylic acid copolymer,
40% of AA-AMPS copolymer,
5 percent of polyaspartic acid,
5.3 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
28.5 percent of maleic acid-acrylic acid copolymer,
41.4 percent of AA-AMPS copolymer,
4.8 percent of polyaspartic acid,
5.5 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the molar ratio of the monomer units in the maleic acid-acrylic acid copolymer, namely maleic acid and acrylic acid, is 1: 2.01-2.06.
Preferably, the molar ratio of the monomer units of the AA-AMPS copolymer, namely acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid, is 1: 0.23 to 0.28.
The invention also provides a preparation method of the phosphorus-free scale inhibitor for industrial circulating water, which comprises the following steps:
A. weighing corresponding raw materials according to the raw material composition of the phosphorus-free scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed deionized water, maleic acid-acrylic acid copolymer, AA-AMPS copolymer, polyaspartic acid and polyepoxysuccinic acid;
C. stirring uniformly, and continuing stirring at room temperature for more than 30 min;
D. filtering the mixture by using a 0.25 micron filter, packaging the filtered mixture, and placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃ for heat preservation for more than 20 hours to obtain the phosphorus-free scale inhibitor for the industrial circulating water.
The invention also provides application of the phosphorus-free scale inhibitor (the code is abbreviated as WT-1985S) for industrial circulating water in scale inhibition of circulating water.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the phosphorus-free scale inhibitor for industrial circulating water is prepared by selecting raw materials, optimizing the content of each raw material, selecting a proper amount of maleic acid-acrylic acid copolymer and AA-AMPS copolymer, preferably selecting maleic acid-acrylic acid copolymer with the molar ratio of monomer units of maleic acid to acrylic acid of 1: 2.01-2.06; preferably, the molar ratio of the monomer units of the AA-AMPS copolymer, namely acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid, is 1: 0.23 to 0.28; the phosphorus-free scale inhibitor for the industrial circulating water has a good scale inhibition effect on the industrial circulating water, is equivalent to the phosphorus-containing scale inhibitor for the industrial circulating water, can save scale inhibition time, and improves the utilization rate and the circulating efficiency of the circulating water; the cost is lower than that of the phosphorus-containing scale inhibitor for industrial circulating water; in addition, the phosphorus-free scale inhibitor for industrial circulating water disclosed by the invention does not contain components such as phosphorus and the like, is used for inhibiting the scale of the circulating water, and does not contain phosphorus in sewage discharged into the environment, so that a water body is not polluted, and the environment is protected.
The preparation method has simple process and simple and convenient operation, and saves manpower and equipment cost.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.
Example 1:
a phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
27% of maleic acid-acrylic acid copolymer,
44% of AA-AMPS copolymer,
4.5 percent of polyaspartic acid,
5.8 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
In this example, the molar ratio of the monomer units maleic acid and acrylic acid in the maleic acid-acrylic acid copolymer was 1: 2.01.
in this example, the molar ratio of monomeric units acrylic acid to 2-acrylamido-2-methylpropanesulfonic acid in the AA-AMPS copolymer was 1: 0.23.
in this embodiment, the preparation method of the phosphorus-free scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials according to the raw material composition of the phosphorus-free scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed deionized water, maleic acid-acrylic acid copolymer, AA-AMPS copolymer, polyaspartic acid and polyepoxysuccinic acid;
C. stirring uniformly, and continuing stirring at room temperature for more than 30 min;
D. filtering the mixture by using a 0.25 micron filter, packaging the filtered mixture, and placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃ for heat preservation for more than 20 hours to obtain the phosphorus-free scale inhibitor for the industrial circulating water.
Example 2:
a phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
33 percent of maleic acid-acrylic acid copolymer,
38% of AA-AMPS copolymer,
5.5 percent of polyaspartic acid,
4.8 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
In this example, the molar ratio of the monomer units maleic acid and acrylic acid in the maleic acid-acrylic acid copolymer was 1: 2.06.
in this example, the molar ratio of monomeric units acrylic acid to 2-acrylamido-2-methylpropanesulfonic acid in the AA-AMPS copolymer was 1: 0.28.
in this embodiment, the preparation method of the phosphorus-free scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials according to the raw material composition of the phosphorus-free scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed deionized water, maleic acid-acrylic acid copolymer, AA-AMPS copolymer, polyaspartic acid and polyepoxysuccinic acid;
C. stirring uniformly, and continuing stirring at room temperature for more than 30 min;
D. filtering the mixture by using a 0.25 micron filter, packaging the filtered mixture, and placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃ for heat preservation for more than 20 hours to obtain the phosphorus-free scale inhibitor for the industrial circulating water.
Example 3:
a phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
30 percent of maleic acid-acrylic acid copolymer,
40% of AA-AMPS copolymer,
5 percent of polyaspartic acid,
5.3 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
In this example, the molar ratio of the monomer units maleic acid and acrylic acid in the maleic acid-acrylic acid copolymer was 1: 2.035.
in this example, the molar ratio of monomeric units acrylic acid to 2-acrylamido-2-methylpropanesulfonic acid in the AA-AMPS copolymer was 1: 0.255.
in this embodiment, the preparation method of the phosphorus-free scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials according to the raw material composition of the phosphorus-free scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed deionized water, maleic acid-acrylic acid copolymer, AA-AMPS copolymer, polyaspartic acid and polyepoxysuccinic acid;
C. stirring uniformly, and continuing stirring at room temperature for more than 30 min;
D. filtering the mixture by using a 0.25 micron filter, packaging the filtered mixture, and placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃ for heat preservation for more than 20 hours to obtain the phosphorus-free scale inhibitor for the industrial circulating water.
Example 4:
a phosphorus-free scale inhibitor for industrial circulating water comprises the following raw materials in percentage by mass:
28.5 percent of maleic acid-acrylic acid copolymer,
41.4 percent of AA-AMPS copolymer,
4.8 percent of polyaspartic acid,
5.5 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
In this example, the molar ratio of the monomer units maleic acid and acrylic acid in the maleic acid-acrylic acid copolymer was 1: 2.03.
in this example, the molar ratio of monomeric units acrylic acid to 2-acrylamido-2-methylpropanesulfonic acid in the AA-AMPS copolymer was 1: 0.26.
in this embodiment, the preparation method of the phosphorus-free scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials according to the raw material composition of the phosphorus-free scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed deionized water, maleic acid-acrylic acid copolymer, AA-AMPS copolymer, polyaspartic acid and polyepoxysuccinic acid;
C. stirring uniformly, and continuing stirring at room temperature for more than 30 min;
D. filtering the mixture by using a 0.25 micron filter, packaging the filtered mixture, and placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃ for heat preservation for more than 20 hours to obtain the phosphorus-free scale inhibitor for the industrial circulating water.
The following performance tests on the phosphorus-free scale inhibitor for industrial circulating water and the common phosphorus-containing scale inhibitor obtained in examples 1 to 4 of the present invention show that the test results are shown in table 1 below:
TABLE 1
As can be seen from the above table, the phosphorus-free scale inhibitor for industrial circulating water of the present invention has the following advantages: the scale inhibition rate on industrial circulating water is high, the scale inhibition effect is good and is equivalent to that of a phosphorus-containing scale inhibitor for industrial circulating water, the scale inhibition time can be saved, and the utilization rate and the circulating efficiency of the circulating water are improved; and the phosphorus content is very low, is far lower than that of the common scale inhibitor, hardly contains phosphorus, and is a phosphorus-free scale inhibitor.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (8)
1. A phosphorus-free scale inhibitor for industrial circulating water is characterized by comprising the following raw materials in percentage by mass:
25-35% of maleic acid-acrylic acid copolymer,
34-47% of AA-AMPS copolymer,
3.5 to 6.5 percent of polyaspartic acid,
3.5-6.5% of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
2. The phosphorus-free scale inhibitor for industrial circulating water of claim 1, which is characterized by comprising the following raw materials in percentage by mass:
27-33% of maleic acid-acrylic acid copolymer,
38-44% of AA-AMPS copolymer,
4.5 to 5.5 percent of polyaspartic acid,
4.8-5.8% of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
3. The phosphorus-free scale inhibitor for industrial circulating water of claim 1, which is characterized by comprising the following raw materials in percentage by mass:
30 percent of maleic acid-acrylic acid copolymer,
40% of AA-AMPS copolymer,
5 percent of polyaspartic acid,
5.3 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
4. The phosphorus-free scale inhibitor for industrial circulating water of claim 1, which is characterized by comprising the following raw materials in percentage by mass:
28.5 percent of maleic acid-acrylic acid copolymer,
41.4 percent of AA-AMPS copolymer,
4.8 percent of polyaspartic acid,
5.5 percent of polyepoxysuccinic acid,
The balance of deionized water, and the sum of the mass percentages of all the raw materials is 100%;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
5. The phosphorus-free scale inhibitor for industrial circulating water according to claim 1, wherein the molar ratio of monomer units of maleic acid to acrylic acid in the maleic acid-acrylic acid copolymer is 1: 2.01-2.06.
6. The phosphorus-free scale inhibitor for industrial circulating water according to claim 1, wherein the molar ratio of monomer units of acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid in the AA-AMPS copolymer is 1: 0.23 to 0.28.
7. The preparation method of the phosphorus-free scale inhibitor for industrial circulating water, which is disclosed by any one of claims 1 to 6, is characterized by comprising the following steps of:
A. weighing corresponding raw materials according to the raw material composition of the phosphorus-free scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed deionized water, maleic acid-acrylic acid copolymer, AA-AMPS copolymer, polyaspartic acid and polyepoxysuccinic acid;
C. stirring uniformly, and continuing stirring at room temperature for more than 30 min;
D. filtering the mixture by using a 0.25 micron filter, packaging the filtered mixture, and placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃ for heat preservation for more than 20 hours to obtain the phosphorus-free scale inhibitor for the industrial circulating water.
8. The application of the phosphorus-free scale inhibitor for industrial circulating water in any one of claims 1 to 6 in scale inhibition of circulating water.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583792A (en) * | 2012-04-06 | 2012-07-18 | 济南大学 | Method for preparing composite industrial circulating cooling water scale inhibitor |
| CN103449618A (en) * | 2013-09-06 | 2013-12-18 | 南京理工大学 | Non-phosphorus composite corrosion and scale inhibitor suitable for industrial circulating cooling water |
| CN107619121A (en) * | 2017-10-27 | 2018-01-23 | 四川锦美环保股份有限公司 | A kind of non-phosphorus scale and corrosion inhibitor |
| CN111115855A (en) * | 2019-12-14 | 2020-05-08 | 嘉兴沃特泰科环保科技股份有限公司 | Non-phosphorus scale inhibitor for circulating water and preparation method and application thereof |
-
2020
- 2020-08-31 CN CN202010897523.6A patent/CN112320976A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583792A (en) * | 2012-04-06 | 2012-07-18 | 济南大学 | Method for preparing composite industrial circulating cooling water scale inhibitor |
| CN103449618A (en) * | 2013-09-06 | 2013-12-18 | 南京理工大学 | Non-phosphorus composite corrosion and scale inhibitor suitable for industrial circulating cooling water |
| CN107619121A (en) * | 2017-10-27 | 2018-01-23 | 四川锦美环保股份有限公司 | A kind of non-phosphorus scale and corrosion inhibitor |
| CN111115855A (en) * | 2019-12-14 | 2020-05-08 | 嘉兴沃特泰科环保科技股份有限公司 | Non-phosphorus scale inhibitor for circulating water and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张光华: "《水处理化学品制备与应用指南》", 31 October 2003, 中国石化出版社 * |
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