CN112320975A - Phosphorus-containing scale inhibitor for industrial circulating water and preparation method and application thereof - Google Patents
Phosphorus-containing scale inhibitor for industrial circulating water and preparation method and application thereof Download PDFInfo
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- CN112320975A CN112320975A CN202010897488.8A CN202010897488A CN112320975A CN 112320975 A CN112320975 A CN 112320975A CN 202010897488 A CN202010897488 A CN 202010897488A CN 112320975 A CN112320975 A CN 112320975A
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- circulating water
- phosphorus
- scale inhibitor
- industrial circulating
- containing scale
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000002455 scale inhibitor Substances 0.000 title claims abstract description 66
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000011574 phosphorus Substances 0.000 title claims abstract description 56
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 34
- 229920001577 copolymer Polymers 0.000 claims abstract description 33
- 230000005764 inhibitory process Effects 0.000 claims abstract description 25
- 150000003751 zinc Chemical class 0.000 claims abstract description 22
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 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 18
- 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 17
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 claims abstract description 15
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001273 butane Substances 0.000 claims abstract description 15
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims abstract description 15
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 15
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 42
- 239000000203 mixture Substances 0.000 claims description 39
- PECAMMUDKRWHFM-UHFFFAOYSA-J dizinc 2,2-diphosphonatoethanol Chemical compound [Zn++].[Zn++].OCC(P([O-])([O-])=O)P([O-])([O-])=O PECAMMUDKRWHFM-UHFFFAOYSA-J 0.000 claims description 21
- 239000011592 zinc chloride Substances 0.000 claims description 21
- 235000005074 zinc chloride Nutrition 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 18
- 239000000178 monomer Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000498 cooling water Substances 0.000 description 7
- 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
- 235000010755 mineral Nutrition 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
- 239000010865 sewage Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
- C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F5/145—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 combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a phosphorus-containing scale inhibitor for industrial circulating water, which comprises the following raw materials in parts by weight: 13-18 parts of zinc salt, 40-50 parts of AA-AMPS copolymer, 13-17 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane, 4.2-5.8 parts of hydroxyethylidene diphosphonic acid, 1.75-1.95 parts of methylbenzotriazole and 16-20 parts of hydrochloric acid; the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid. The phosphorus-containing scale inhibitor for the industrial circulating water disclosed by the invention is prepared by selecting raw materials and optimizing the content of each raw material, so that the prepared phosphorus-containing scale inhibitor for the industrial circulating water has a very excellent scale inhibition effect on the industrial circulating water, the scale inhibition time can be greatly saved, and the utilization rate and the circulating efficiency of the circulating water are greatly improved; and the dosage of the scale inhibitor can be reduced, and the scale inhibition cost of industrial circulating water can be saved.
Description
Technical Field
The invention relates to the field of scale inhibitors, and particularly relates to a phosphorus-containing 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 inhibition effect on industrial circulating water is not ideal, and the dosage is generally increased, so that the cost is high, and the environment is polluted (the phosphorus content in sewage exceeds the standard);
2. the scale inhibition of the industrial circulating water has high demand on the dosage of the scale inhibitor for the industrial circulating water and high requirement on the scale inhibition effect, otherwise, the scale inhibition not only causes high cost and environmental pollution (the phosphorus content in the sewage exceeds the standard), but also can cause equipment failure and even accidents due to scale formation.
Based on the situation, the invention provides a phosphorus-containing 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-containing scale inhibitor for industrial circulating water and a preparation method and application thereof. The phosphorus-containing scale inhibitor for the industrial circulating water disclosed by the invention is prepared by selecting raw materials and optimizing the content of each raw material, so that the prepared phosphorus-containing scale inhibitor for the industrial circulating water has a very excellent scale inhibition effect on the industrial circulating water, the scale inhibition time can be greatly saved, and the utilization rate and the circulating efficiency of the circulating water are greatly improved; and the dosage of the scale inhibitor can be reduced, and the scale inhibition cost of industrial circulating water can be saved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a phosphorus-containing scale inhibitor for industrial circulating water comprises the following raw materials in parts by weight:
13-18 parts of zinc salt,
40-50 parts of AA-AMPS copolymer,
13-17 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane,
4.2 to 5.8 parts of hydroxyethylidene diphosphonic acid,
1.75 to 1.95 parts of methylbenzotriazole,
16-20 parts of hydrochloric acid;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
The phosphorus-containing scale inhibitor for the industrial circulating water disclosed by the invention is prepared by selecting raw materials and optimizing the content of each raw material, so that the prepared phosphorus-containing scale inhibitor for the industrial circulating water has a very excellent scale inhibition effect on the industrial circulating water, the scale inhibition time can be greatly saved, and the utilization rate and the circulating efficiency of the circulating water are greatly improved; and the dosage of the scale inhibitor can be reduced, and the scale inhibition cost of industrial circulating water can be saved.
Preferably, the phosphorus-containing scale inhibitor for industrial circulating water comprises the following raw materials in parts by weight:
15 parts of zinc salt,
45 parts of AA-AMPS copolymer,
15 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane,
5 parts of hydroxyethylidene diphosphonic acid,
1.8 parts of methylbenzotriazole,
18 parts of hydrochloric acid;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the phosphorus-containing scale inhibitor for industrial circulating water comprises the following raw materials in parts by weight:
15.5 parts of zinc salt,
46.5 parts of AA-AMPS copolymer,
15.2 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane,
5.3 parts of hydroxyethylidene diphosphonic acid,
1.85 parts of methylbenzotriazole,
18 parts of hydrochloric acid;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the zinc salt is a mixture of zinc hydroxyethylidene diphosphonate and zinc chloride.
Preferably, the mass ratio of the zinc hydroxyethylidene diphosphonate to the zinc chloride in the mixture of the zinc hydroxyethylidene diphosphonate and the zinc chloride is 1: 0.72 to 0.77.
Preferably, the mass concentration of the hydrochloric acid is 18.5-20.5 parts.
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-containing scale inhibitor for industrial circulating water, which comprises the following steps:
A. weighing corresponding raw materials respectively according to the raw material composition of the phosphorus-containing scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed hydrochloric acid, zinc salt, AA-AMPS copolymer, 2-phosphate-1, 2, 4-tricarboxylic acid butane, hydroxyethylidene diphosphonic acid and methylbenzotriazole into a stirring and mixing container;
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, placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃, and preserving the heat for more than 20 hours to obtain the phosphorus-containing scale inhibitor for the industrial circulating water.
The invention also provides application of the phosphorus-containing scale inhibitor (the code is abbreviated as WT-1763S) 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-containing scale inhibitor for the industrial circulating water disclosed by the invention is prepared by selecting raw materials and optimizing the content of each raw material, so that the prepared phosphorus-containing scale inhibitor for the industrial circulating water has a very excellent scale inhibition effect on the industrial circulating water, the scale inhibition time can be greatly saved, and the utilization rate and the circulating efficiency of the circulating water are greatly improved; and the dosage of the scale inhibitor can be reduced, and the scale inhibition cost of industrial circulating water can be saved.
The phosphorus-containing scale inhibitor for industrial circulating water selects hydrochloric acid, zinc salt, AA-AMPS copolymer, 2-phosphate-1, 2, 4-tricarboxylic acid butane, hydroxyethylidene diphosphonic acid and methylbenzotriazole in proper proportion, and preferably, the zinc salt is a mixture of zinc hydroxyethylidene diphosphonate and zinc chloride; preferably, the mass ratio of the zinc hydroxyethylidene diphosphonate to the zinc chloride in the mixture of the zinc hydroxyethylidene diphosphonate and the zinc chloride is 1: 0.72 to 0.77; preferably, the mass concentration of the hydrochloric acid is 18.5-20.5%; 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 inventor finds through a large number of experiments that the raw material combination and the proper proportion can enable the raw materials to be matched with each other, so as to play a good compatibility role, namely, the composition and the dosage of the raw materials need to be strictly controlled (thereby ensuring the product quality and the scale inhibition effect), thereby ensuring that the scale inhibition effect of the phosphorus-containing scale inhibitor for industrial circulating water is very excellent, greatly saving the scale inhibition time, and greatly improving the utilization rate and the circulating efficiency of the circulating water; and the dosage of the scale inhibitor can be reduced, and the scale inhibition cost of industrial circulating water can be saved.
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-containing scale inhibitor for industrial circulating water comprises the following raw materials in parts by weight:
13 parts of zinc salt,
40 parts of AA-AMPS copolymer,
13 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane,
4.2 parts of hydroxyethylidene diphosphonic acid,
1.75 parts of methylbenzotriazole,
16 parts of hydrochloric acid;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the zinc salt is a mixture of zinc hydroxyethylidene diphosphonate and zinc chloride.
Preferably, the mass ratio of the zinc hydroxyethylidene diphosphonate to the zinc chloride in the mixture of the zinc hydroxyethylidene diphosphonate and the zinc chloride is 1: 0.72.
preferably, the mass concentration of the hydrochloric acid is 18.5%.
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.
in this embodiment, the preparation method of the phosphorus-containing scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials respectively according to the raw material composition of the phosphorus-containing scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed hydrochloric acid, zinc salt, AA-AMPS copolymer, 2-phosphate-1, 2, 4-tricarboxylic acid butane, hydroxyethylidene diphosphonic acid and methylbenzotriazole into a stirring and mixing container;
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, placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃, and preserving the heat for more than 20 hours to obtain the phosphorus-containing scale inhibitor for the industrial circulating water.
Example 2:
a phosphorus-containing scale inhibitor for industrial circulating water comprises the following raw materials in parts by weight:
18 parts of zinc salt,
50 parts of AA-AMPS copolymer,
17 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane,
5.8 parts of hydroxyethylidene diphosphonic acid,
1.95 parts of methylbenzotriazole,
20 parts of hydrochloric acid;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the zinc salt is a mixture of zinc hydroxyethylidene diphosphonate and zinc chloride.
Preferably, the mass ratio of the zinc hydroxyethylidene diphosphonate to the zinc chloride in the mixture of the zinc hydroxyethylidene diphosphonate and the zinc chloride is 1: 0.77.
preferably, the mass concentration of the hydrochloric acid is 20.5%.
Preferably, the molar ratio of the monomer units of the AA-AMPS copolymer, namely acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid, is 1: 0.28.
in this embodiment, the preparation method of the phosphorus-containing scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials respectively according to the raw material composition of the phosphorus-containing scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed hydrochloric acid, zinc salt, AA-AMPS copolymer, 2-phosphate-1, 2, 4-tricarboxylic acid butane, hydroxyethylidene diphosphonic acid and methylbenzotriazole into a stirring and mixing container;
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, placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃, and preserving the heat for more than 20 hours to obtain the phosphorus-containing scale inhibitor for the industrial circulating water.
Example 3:
a phosphorus-containing scale inhibitor for industrial circulating water comprises the following raw materials in parts by weight:
15 parts of zinc salt,
45 parts of AA-AMPS copolymer,
15 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane,
5 parts of hydroxyethylidene diphosphonic acid,
1.8 parts of methylbenzotriazole,
18 parts of hydrochloric acid;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the zinc salt is a mixture of zinc hydroxyethylidene diphosphonate and zinc chloride.
Preferably, the mass ratio of the zinc hydroxyethylidene diphosphonate to the zinc chloride in the mixture of the zinc hydroxyethylidene diphosphonate and the zinc chloride is 1: 0.74.5.
preferably, the mass concentration of the hydrochloric acid is 19.5%.
Preferably, the molar ratio of the monomer units of the AA-AMPS copolymer, namely acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid, is 1: 0.255.
in this embodiment, the preparation method of the phosphorus-containing scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials respectively according to the raw material composition of the phosphorus-containing scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed hydrochloric acid, zinc salt, AA-AMPS copolymer, 2-phosphate-1, 2, 4-tricarboxylic acid butane, hydroxyethylidene diphosphonic acid and methylbenzotriazole into a stirring and mixing container;
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, placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃, and preserving the heat for more than 20 hours to obtain the phosphorus-containing scale inhibitor for the industrial circulating water.
Example 4:
a phosphorus-containing scale inhibitor for industrial circulating water comprises the following raw materials in parts by weight:
15.5 parts of zinc salt,
46.5 parts of AA-AMPS copolymer,
15.2 parts of 2-phosphate-1, 2, 4-tricarboxylic acid butane,
5.3 parts of hydroxyethylidene diphosphonic acid,
1.85 parts of methylbenzotriazole,
18 parts of hydrochloric acid;
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
Preferably, the zinc salt is a mixture of zinc hydroxyethylidene diphosphonate and zinc chloride.
Preferably, the mass ratio of the zinc hydroxyethylidene diphosphonate to the zinc chloride in the mixture of the zinc hydroxyethylidene diphosphonate and the zinc chloride is 1: 0.74.
preferably, the mass concentration of the hydrochloric acid is 19%.
Preferably, the molar ratio of the monomer units of the AA-AMPS copolymer, namely acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid, is 1: 0.26.
in this embodiment, the preparation method of the phosphorus-containing scale inhibitor for industrial circulating water includes the following steps:
A. weighing corresponding raw materials respectively according to the raw material composition of the phosphorus-containing scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed hydrochloric acid, zinc salt, AA-AMPS copolymer, 2-phosphate-1, 2, 4-tricarboxylic acid butane, hydroxyethylidene diphosphonic acid and methylbenzotriazole into a stirring and mixing container;
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, placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃, and preserving the heat for more than 20 hours to obtain the phosphorus-containing scale inhibitor for the industrial circulating water.
The following performance tests on the phosphorus-containing scale inhibitor for industrial circulating water and the common 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
From the above table, it can be seen that the phosphorus-containing scale inhibitor for industrial circulating water of the present invention has the following advantages: compared with the common scale inhibitor, the scale inhibitor has excellent scale inhibition effect on industrial circulating water, can greatly save scale inhibition time, and greatly improves the utilization rate and the circulating efficiency of the circulating water; and the dosage of the scale inhibitor can be reduced, and the scale inhibition cost of industrial circulating water can be saved.
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 (9)
1. The phosphorus-containing scale inhibitor for industrial circulating water is characterized by comprising the following raw materials in parts by weight:
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
2. The phosphorus-containing scale inhibitor for industrial circulating water as claimed in claim 1, wherein the raw materials of the phosphorus-containing scale inhibitor for industrial circulating water comprise, by weight:
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
3. The phosphorus-containing scale inhibitor for industrial circulating water as claimed in claim 1, wherein the raw materials of the phosphorus-containing scale inhibitor for industrial circulating water comprise, by weight:
the AA-AMPS copolymer is formed by copolymerizing acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid.
4. The phosphorus-containing scale inhibitor for industrial circulating water according to claim 1, wherein the zinc salt is a mixture of zinc hydroxyethylidene diphosphonate and zinc chloride.
5. The phosphorus-containing scale inhibitor for industrial circulating water according to claim 1, wherein the mass ratio of the zinc hydroxyethylidene diphosphonate to the zinc chloride in the mixture of the zinc hydroxyethylidene diphosphonate and the zinc chloride is 1: 0.72 to 0.77.
6. The phosphorus-containing scale inhibitor for industrial circulating water according to claim 1, wherein the mass concentration of the hydrochloric acid is 18.5-20.5%.
7. The phosphorus-containing 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.
8. The preparation method of the phosphorus-containing scale inhibitor for industrial circulating water as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
A. weighing corresponding raw materials respectively according to the raw material composition of the phosphorus-containing scale inhibitor for the industrial circulating water for later use;
B. sequentially adding weighed hydrochloric acid, zinc salt, AA-AMPS copolymer, 2-phosphate-1, 2, 4-tricarboxylic acid butane, hydroxyethylidene diphosphonic acid and methylbenzotriazole into a stirring and mixing container;
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, placing the packaged mixture in a heat preservation chamber at the temperature of 25 +/-2 ℃, and preserving the heat for more than 20 hours to obtain the phosphorus-containing scale inhibitor for the industrial circulating water.
9. The use of the phosphorus-containing scale inhibitor for industrial circulating water as claimed in any one of claims 1 to 7 in scale inhibition of circulating water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897488.8A CN112320975A (en) | 2020-08-31 | 2020-08-31 | Phosphorus-containing scale inhibitor for industrial circulating water and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010897488.8A CN112320975A (en) | 2020-08-31 | 2020-08-31 | Phosphorus-containing scale inhibitor for industrial circulating water and preparation method and application thereof |
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| CN113354109A (en) * | 2021-05-20 | 2021-09-07 | 大唐七台河发电有限责任公司 | Method for quickly cleaning scaling on circulating water cooling pipe wall of condenser |
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