Efficient low-phosphorus scale and corrosion inhibitor and preparation method thereof

A scale and corrosion inhibitor, high-efficiency technology, applied in chemical instruments and methods, scale removal and water softening, natural water treatment, etc., to achieve excellent corrosion inhibition performance, improve the effect of corrosion inhibition performance

Pending Publication Date: 2021-03-16
SHANDONG TIANQING TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a kind of

Method used

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  • Efficient low-phosphorus scale and corrosion inhibitor and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Add 10kg of sodium nitrite and 30kg of deionized water into the stirring tank, stir and dissolve; add 15kg of borax to the above solution, stir and dissolve, then add 10kg of zinc sulfate heptahydrate, stir and dissolve; finally add 12kg of 2-phosphine to the reaction kettle Acyl-1,2,4-butanetricarboxylic acid, 12kg polyepoxysuccinic acid, 15kg acrylic acid / 2-acrylamide-2-methylpropanesulfonic acid copolymer; stir evenly at room temperature for 20-30min to obtain high-efficiency Low phosphorus scale and corrosion inhibitor.

Embodiment 2

[0031] Add 5kg of sodium nitrite and 20kg of deionized water into the stirring tank, stir and dissolve; add 10kg of disodium octaborate tetrahydrate to the above solution, stir and dissolve, then add 15kg of zinc chloride, stir and dissolve; Add 5kg of hydroxyethylene diphosphonic acid, 10kg of polyepoxysuccinic acid, and 10kg of acrylic acid / propylene sulfonate sodium copolymer; stir evenly at room temperature for 20 to 30 minutes to obtain a high-efficiency low-phosphorus scale and corrosion inhibitor.

Embodiment 3

[0033] Add 15kg of sodium nitrite and 50kg of deionized water into the stirring tank, stir and dissolve; add 20kg of potassium tetraborate to the above solution, stir and dissolve, then add 5kg of zinc chloride, stir and dissolve; finally add 10kg2 -Hydroxyphosphinoacetic acid, 15kg polyaspartic acid, 20kg acrylic acid / 2-acrylamide-2-methylpropanesulfonic acid / hydroxypropyl acrylate terpolymer; stir evenly at room temperature for 20-30min to obtain high-efficiency and low-efficiency Phosphorus scale and corrosion inhibitor.

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Abstract

The invention discloses an efficient low-phosphorus scale and corrosion inhibitor and a preparation method thereof. The efficient low-phosphorus scale and corrosion inhibitor comprises the following raw materials in parts by weight: 5-15 parts of organic phosphine, 10-20 parts of sulfonate copolymer, 10-15 parts of carboxylic acid polymer, 10-20 parts of borate, 5-15 parts of sodium nitrite, 5-15parts of zinc salt and 10-50 parts of deionized water. The efficient low-phosphorus scale and corrosion inhibitor has the characteristics of small amount and high efficiency. The efficient low-phosphorus scale and corrosion inhibitor is suitable for a circulating cooling water system with low hardness and low alkalinity, and has excellent corrosion inhibition performance on carbon steel and stainless steel equipment.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a high-efficiency low-phosphorus scale and corrosion inhibitor and a preparation method thereof. Background technique [0002] my country is one of the countries with the most water shortages in the world. The total annual water resources are more than 2.8 trillion tons, ranking sixth in the world, and the per capita water volume is less than 2400m 3 , only 1 / 4 of the world's per capita water volume, ranking 110th in the world, and listed by the United Nations as one of the 13 water-poor countries. At present, water scarcity coverage is almost all over the country. As far as the north where water is not abundant, water shortage is already the most serious problem facing the development of industry and agriculture. The circulating cooling water used for cooling in industrial water accounts for a relatively large proportion, accounting for 60% to 80% of the to...

Claims

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Application Information

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IPC IPC(8): C02F5/14C02F5/10C23F11/08C02F103/02
CPCC02F5/145C02F5/105C23F11/08C02F2303/08C02F2103/023
Inventor 郭翠娟张留成刘文峰谢泽新高松耿俊玲梁新新高云峰郑萍范春燕
Owner SHANDONG TIANQING TECH DEV
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