Phosphorus-free corrosion and scale inhibitor and preparation method thereof

A phosphorus-free corrosion and scale inhibitor technology, applied in the field of water treatment, can solve problems such as water source pollution, algal blooms, eutrophication of environmental waters, etc., and achieve the effects of reducing environmental pollution, reducing energy consumption, and good environmental protection

Inactive Publication Date: 2009-09-09
李洪社
View PDF1 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the development of organic phosphoric acid corrosion and scale inhibitors has been extremely rapid. They have the advantages of stable chemical properties, high temperature and pH resistance, obvious solubility-limiting effect and synergis

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Select raw materials by weight percentage

[0024] Polyepoxysuccinic Acid 25%,

[0025] Maleic acid-acrylic acid copolymer (MA-AA) 18%,

[0026] Tolylbenzotriazole 5%,

[0027] Potassium molybdate 3%,

[0028] Potassium Hydroxide 6%,

[0029] The rest is water.

[0030] Add water, potassium hydroxide, polyepoxysuccinic acid, maleic acid-acrylic acid copolymer (MA-AA), potassium molybdate, and methylbenzotriazole into the container in sequence, and stir at room temperature for 1- After 1.5 hours, the product was obtained.

Embodiment 2

[0032] Select raw materials by weight percentage

[0033] Polyepoxysuccinic Acid 40%,

[0034] Acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA / AMPS) 35%,

[0035] Tolylbenzotriazole 15%,

[0036] Sodium molybdate 1%,

[0037] Sodium Hydroxide 2%,

[0038] The rest is water.

[0039] Add water, sodium hydroxide, polyepoxysuccinic acid, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA / AMPS), sodium molybdate, and methylbenzotriazole in proportion In the container, stir at room temperature for 1-1.5 hours to obtain the product.

Embodiment 3

[0041] Select raw materials by weight percentage

[0042] Polyepoxysuccinic Acid 30%,

[0043] Acrylic-Acrylate-Sulfonate Terpolymer 25%,

[0044] Mercaptobenzothiazole 8%,

[0045] Sodium molybdate 2%,

[0046] Potassium Hydroxide 3%,

[0047] The rest is water.

[0048] Add water, potassium hydroxide, polyepoxysuccinic acid, acrylic acid-acrylate-sulfonate terpolymer, sodium molybdate, and mercaptobenzothiazole into the container in sequence, and stir at room temperature for 1-1.5 hours. Instant product.

[0049] Application Test and Results

[0050] 1. Source of test samples: see Table 1

[0051] Table 1 Source of test samples

[0052] Pharmacy source

Drug name

Product embodiment 1 of the present invention

AE 3057①

Product embodiment 2 of the present invention

AE 3057②

Product embodiment 3 of the present invention

AE 3057③

[0053] 2. Resistance to calcium carbonate test

[0054] 2.1 Test water: water distributi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a phosphorus-free corrosion and scale inhibitor and a preparation method thereof, belonging to water treatment. The phosphorus-free corrosion and scale inhibitor comprises the following components by weight percent: 25-40 of polyepoxysuccinic acid, 18-40 of acrylic copolymer, 5-15 of azole, 1-3 of molybdate, 2-6 of pH value modifier, and the balance of water. The preparation method comprises steps of adding the water, the pH value modifier, poly-epoxy succinic acid the acrylic copolymer, the molybdate and the azole proportionally into a vessel in sequence and stirring the mixture for 1-1.5 hours at the room temperature to obtain finished products. The phosphorus-free corrosion and scale inhibitor has simple preparation process, short preparation time, excellent rust and scale inhibition and favorable environment protection.

Description

technical field [0001] The invention relates to water treatment, in particular to a phosphorus-free corrosion and scale inhibitor and a preparation method thereof. Background technique [0002] my country is listed as one of the water-poor countries in the world, especially in the northern and western regions. Water quality and water shortages are also very serious in southeast China due to surface water pollution. At present, China's water shortage exceeds 100 billion cubic meters. Per capita water resources in many areas are already close to that of Israel, a world-famous water-scarce country. Among the 670 large and medium-sized cities in the country, 400 cities are short of water to varying degrees. 110 of these cities suffer from severe water shortages. Faced with such a severe situation of water shortage, my country's industrial water consumption is astonishingly wasted. The main reason is that the reuse rate of industrial water is low. The reuse rate of industri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F5/08
Inventor 李洪社喻果武中臣车凯
Owner 李洪社
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap