Composite corrosion-inhibiting and antisludging agent composition and preparation method thereof

A technology of corrosion and scale inhibitors and compositions, which is applied in the field of preparation of composite corrosion and scale inhibitors, can solve the problems of low corrosion and scale inhibition performance, and achieve the effect of improving corrosion and scale inhibition performance

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a compound corrosion and scale inhibitor composition and its preparation method in order to overcome the disadvantages of the existing low-phosphorus corrosion and scale inhibitors with low corrosion and scale inhibitory properties

Method used

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  • Composite corrosion-inhibiting and antisludging agent composition and preparation method thereof
  • Composite corrosion-inhibiting and antisludging agent composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This example is used to illustrate the composite corrosion and scale inhibitor composition of the present invention and its preparation method.

[0051] (1) Preparation of the first mixture (heteropoly acid)

[0052] Mix 10 g of water and 0.2 g of sodium phosphate, stir at room temperature until fully dissolved, then add 1 g of phosphoric acid and continue stirring until dissolved, then add 1 g of sulfuric acid, and stir at room temperature for 30 minutes to obtain the first mixture.

[0053] (2) Prepare the second mixture

[0054] 0.2 g of HPAA and 1 g of perchloric acid were mixed and stirred at room temperature for 30 minutes to obtain a second mixture.

[0055] (3) Prepare the third mixture

[0056] 51.6g of water, 20g of polyepoxysuccinic acid, 5g of acrylic acid and 2-acrylamido-2-methyl-propanesulfonic acid copolymer and 10g of zinc chloride were mixed and stirred at room temperature until fully dissolved to obtain the third mixture.

[0057] (4) Preparation ...

Embodiment 2-6

[0060] This example is used to illustrate the composite corrosion and scale inhibitor composition of the present invention and its preparation method.

[0061] Composite corrosion and scale inhibitors were prepared according to the method of Example 1, except that the types and amounts of materials in each step were as shown in Table 1, so that composite corrosion and scale inhibitors A2-A6 were prepared respectively.

[0062] Table 1

[0063]

[0064]

Embodiment 7

[0078] This example is used to illustrate the composite corrosion and scale inhibitor composition of the present invention and its preparation method.

[0079] The types of materials used in this embodiment and the amount of feed are the same as those in Example 1. The difference is that the various materials are not mixed step by step, but are mixed directly. The specific preparation process is: directly mix 61.6g of water, 0.2 g sodium phosphate, 1 g phosphoric acid, 1 g sulfuric acid, 0.2 g HPAA, 1 g perchloric acid, 20 g polyepoxysuccinic acid, 5 g acrylic acid and 2-acrylamido-2-methyl-propanesulfonic acid copolymer and 10 g chloride Zinc is mixed and stirred at room temperature until it is fully dissolved, thereby preparing composite corrosion and scale inhibitor A7.

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Abstract

The invention relate to a composite corrosion-inhibiting and antisludging agent composition. The composite corrosion-inhibiting and antisludging agent composition contains water-soluble oxidizing inorganic metal salt, an inorganic phosphorus chemical compound, an organic phosphine chemical compound, an adsorption film type corrosion inhibiting agent, a non-phosphorus dispersal polymer, water-soluble inorganic zinc salt, an oxidizer and mineral acids except a phosphoric acid, of which the weight ratio is 1:(0.1-3):(0.1-10):(0.5-50):(0.5-50):(0.5-25):(0.5-5):(0.5-10). The invention further relates to a preparation method of the composite corrosion-inhibiting and antisludging agent composition. The method comprises the following step: mixing components in the composite corrosion-inhibiting and antisludging agent composition with water, wherein the composite corrosion-inhibiting and antisludging agent composition is the composite corrosion-inhibiting and antisludging agent composition disclosed by the invention. The corrosion-inhibiting performance and the antisludging performance of the composition corrosion-inhibiting and antisludging agent composition provided by the invention are obviously improved.

Description

technical field [0001] The invention relates to a composite corrosion and scale inhibitor composition and a preparation method of the composite corrosion and scale inhibitor. Background technique [0002] At present, the circulating water cooling water system is generally treated with phosphorus formula. Although the treatment effect is good, the phosphorus-based formula contains high phosphorus, and the total phosphorus in water (as PO 4 3- Total) content is generally above 7mg / L. On the one hand, high phosphorus content tends to accelerate the growth and reproduction of microorganisms in the circulating water system and enhance the tendency of phosphate scale formation, thereby increasing the amount of fungicides and scale inhibitors and increasing additional treatment costs; on the other hand, high concentration Excessive phosphate discharged into the environment will easily cause eutrophication of the water system and form a "red tide", which will cause oxygen deficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08C02F5/10C02F5/14
CPCC02F5/105C02F5/145C23F11/08C23F14/02
Inventor 余正齐李本高
Owner CHINA PETROLEUM & CHEM CORP
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