Composite phosphorus-free corrosion-scale inhibitor and preparation method thereof

A technology of phosphorus-free corrosion and scale inhibitors, applied in chemical instruments and methods, descaling and water softening, special treatment goals, etc., can solve problems such as nozzle clogging and outer package scaling, and achieve low cost and environmental friendliness , highly targeted effect

Active Publication Date: 2019-01-25
RUITIAN SECURITY & ENVIRONMENTAL PROTECTION CO LTD PANZHIHUA GANGCHENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a composite non-phosphorus corrosion and scale inhibitor suitable for industrial circulating water systems for the problems of nozzle clogging and outer package scaling in industrial circulating water systems

Method used

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  • Composite phosphorus-free corrosion-scale inhibitor and preparation method thereof
  • Composite phosphorus-free corrosion-scale inhibitor and preparation method thereof
  • Composite phosphorus-free corrosion-scale inhibitor and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1 Preparation of composite non-phosphorus corrosion and scale inhibitor of the present invention

[0030] Raw materials used in this embodiment and their quality are as follows:

[0031] Table 1 Raw material quality table

[0032]

[0033] Among the above-mentioned composite non-phosphorus corrosion and scale inhibitors suitable for industrial circulating water systems, the molecular weight of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer is 1000-10000 Da, it is an aqueous solution, and its solid content is ≥ 30%; The molecular weight of hydrolyzed polymaleic anhydride is 450-800Da, which is an aqueous solution with a solid content ≥ 48%; sodium molybdate is a white powder with a content greater than 99%; the molecular weight of polyepoxysuccinic acid is 400-800Da, which is an effective The chelate; the molecular weight of maleic acid-acrylic acid copolymer is 300~4000Da.

[0034] Its preparation method is as follows: acrylic acid-2-ac...

Embodiment 2

[0035] Embodiment 2 Preparation of composite non-phosphorus corrosion and scale inhibitor of the present invention

[0036] Raw materials used in this embodiment and their quality are as follows:

[0037] Table 2 Raw material quality table

[0038]

[0039] Above-mentioned raw material is identical with embodiment 1. Its preparation method is identical with embodiment 1.

Embodiment 3

[0040] Example 3 Preparation of composite non-phosphorus corrosion and scale inhibitor of the present invention

[0041] Raw materials used in this embodiment and their quality are as follows:

[0042] Table 3 raw material quality table

[0043]

[0044]

[0045] Above-mentioned raw material is identical with embodiment 1. Its preparation method is identical with embodiment 1

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Abstract

The invention relates to a composite phosphorus-free corrosion-scale inhibitor and a preparation method thereof and belongs to the field of preparation of corrosion-scale inhibitors. The technical problem to be solved herein is to provide a composite phosphorus-free corrosion-scale inhibitor for industrial circulating water systems in order to solve the nozzle blocking and scale coating problems of an industrial circulating water system. The composite phosphorus-free corrosion-scale inhibitor provided herein comprises, by weight, 5-10 parts of acrylic acid-2-acrylamido-2-methylpropane sulfonicacid copolymer, 2-6 parts of hydrolyzed maleic anhydride, 4-6 parts of zinc sulfate, 1-3 parts of sodium molybdate, 5-10 parts of polyepoxysuccinic acid, 1-3 parts of maleic acid-acrylic acid copolymer, and 0.5-2 parts of benzotriazole. Compared with like corrosion-scale inhibitors, the composite phosphorus-free corrosion-scale inhibitor herein has the advantages of good specificity, low cost, good operational convenience, good convenience and high speed, good environmental friendliness, good safety, high efficiency and the like.

Description

technical field [0001] The invention relates to a composite non-phosphorus corrosion and scale inhibitor and a preparation method thereof, belonging to the field of preparation of corrosion and scale inhibitors. Background technique [0002] At present, in industrial production, many equipment need to use the cooling method of circulating water cooling, and some equipment temperature will be very high, resulting in the formation of scale and blockage in some parts of the circulating water pipeline. If the scaling inside the pipeline will lead to nozzle blockage or scaling (calcium fluoride) on the outside, the cooling effect of the equipment will be poor, or even unable to cool. If the temperature is too high, burn-through will occur, resulting in serious consequences such as equipment damage and production stoppage. Production causes problems, causing severe economic losses. [0003] Most of the composite corrosion and scale inhibitors sold on the market are aimed at gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12
CPCC02F5/125C02F2303/08
Inventor 李汝珍谢永生盛士新袁木王建全陈发英
Owner RUITIAN SECURITY & ENVIRONMENTAL PROTECTION CO LTD PANZHIHUA GANGCHENG GRP
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