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A kind of phosphorus-free slow-release scale inhibitor and its synthesis method

A scale inhibitor and slow-release technology, applied in the field of phosphorus-free slow-release scale inhibitor and its synthesis, can solve problems such as water quality deterioration and red tide hazards, improve dispersing ability, strengthen market competitiveness, and enhance slow-release and resistance. The effect of scaling performance

Active Publication Date: 2022-03-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as chromate, mercury salt, etc., although polyphosphates, organic phosphates and other phosphorus compounds are a kind of good corrosion inhibitors, but because they are easy to cause eutrophication of water bodies, it often occurs in coastal areas of our country. Large-scale red tide hazards, water quality continues to deteriorate

Method used

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  • A kind of phosphorus-free slow-release scale inhibitor and its synthesis method
  • A kind of phosphorus-free slow-release scale inhibitor and its synthesis method
  • A kind of phosphorus-free slow-release scale inhibitor and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Select raw materials by weight percentage:

[0023]

[0024] Add water, polyepoxysuccinic acid, sodium molybdate, and thiourea into the container in sequence, and stir for 2 hours at 85°C, then add polyaspartic acid, maleic acid-acrylic acid copolymer, and ethanol in sequence, and keep at room temperature Stirring for 1 hour, the obtained product, the scale inhibition and slow release test results of the sample in the circulating water system are shown in Table 2.

Embodiment 2

[0026] Select raw materials by weight percentage

[0027]

[0028] Add water, polyepoxysuccinic acid, sodium molybdate, and thiourea into the container in sequence, and stir for 2 hours at 85°C, then add polyaspartic acid, acrylic acid-acrylate-sulfonate copolymer and ethanol in sequence , stirred at room temperature for 1 hour to obtain the product.

Embodiment 3

[0030] Select raw materials by weight percentage

[0031]

[0032] Add water, polyepoxysuccinic acid, sodium molybdate, and thiourea into the container in sequence, and stir for 2 hours at 85°C, then add polyaspartic acid, acrylic acid-2-acrylamide-2-methylpropane in sequence Sulfonic acid copolymer and ethanol were stirred at room temperature for 1 hour to obtain the product.

[0033] Application Test and Results

[0034] 1. Source of experimental samples: see Table 1

[0035] Table 1 Source of test samples

[0036] Pharmacy source Drug name Product embodiment 1 of the present invention HSZGJ 1 Product embodiment 2 of the present invention HSZGJ 2 Product embodiment 3 of the present invention HSZGJ 3

[0037] 2. Calcium carbonate resistance experiment

[0038] 2.1 Test water: water distribution: Ca 2+ 400ppm, HCO 3 - 1220ppm.

[0039] 2.2 Experimental conditions: water temperature 80°C, time 10h, dosage of medicine: 4ppm.

[004...

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Abstract

The invention provides a phosphorus-free slow-release scale inhibitor and a synthesis method thereof, which relate to the field of water treatment. The phosphorus-free slow-release antiscalant includes active ingredients, additives and water. The active ingredient includes polyepoxysuccinic acid, thiourea, polyaspartic acid, acrylic acid copolymer and inorganic sodium salt, and the auxiliary agent is small molecule alcohol. Its preparation method is to add water, polyepoxysuccinic acid, inorganic sodium salt, and thiourea into the container in sequence, stir for 1-3 hours at 50-90 degrees, and then add polyaspartic acid and acrylic acid copolymer in sequence and additives, stirred at room temperature for 1‑2 hours, and obtained product. The phosphorus-free composite slow-release scale inhibitor of the present invention has excellent slow-release scale inhibitor effect and strong market competitiveness. By adding active components such as thiourea, it can improve the dispersion ability of small dirt particles and improve its slow-release effect. , Anti-rust and anti-scale properties. The formula does not contain any inorganic phosphorus and organic phosphorus compounds, has excellent safety and environmental protection performance, and has broad practical application prospects.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a phosphorus-free slow-release scale inhibitor and a synthesis method thereof. Background technique [0002] At present, the most effective way to control water quality is to add water treatment agents. The research on water treatment agents began in the 19th century. Through continuous exploration, various water treatment agents have been developed and their effects have been continuously improved. Phosphorus-containing polymers have greatly promoted the development of water treatment technology and are currently the most common water treatment products on the market, but they have caused great harm to the environment. On the one hand, it has exacerbated water shortage; on the other hand, the control of phosphorus-containing polymers has also been strengthened around the world. Therefore, the research and development of water treatment agents with multiple functions and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/12
CPCC02F5/125
Inventor 胡向平陈松
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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