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Scale cleaning agent and preparation method thereof

A cleaning agent and scale technology, applied in the field of scale cleaning agent and its preparation, can solve problems such as equipment corrosion, and achieve the effects of alleviating corrosion, excellent cleaning performance and wide adaptability

Inactive Publication Date: 2015-01-14
SUZHOU CHANGSHENG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Both of the above two patents use strong acidic inorganic acid to remove scale, and the effect of scale removal is very good, but it will cause serious equipment corrosion problems

Method used

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  • Scale cleaning agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare a limescale cleaner according to the following recipe:

[0032] components

weight percentage (%)

Hydrochloric acid with a mass concentration of 37%

15

Fulvic acid

0.1

citric acid

1

Coconut Oil Fatty Acid Diethanolamide

1

Mercaptobenzothiazole

0.5

polyacrylamide

0.4

Sulfite

2

water

80

[0033] The preparation method of the present embodiment is as follows:

[0034] (1) add 50% water of total water amount in reactor, at normal temperature, add mass concentration while stirring and be the hydrochloric acid of 37%, leave standstill after dissolving completely;

[0035] (2) Add mercaptobenzothiazole and sodium sulfite respectively to the hydrochloric acid solution prepared in step (1), after stirring evenly, add coconut oil fatty acid diethanolamide, fulvic acid and citric acid, and continue stirring until the solution is uniformly dispersed;

[0036] (3) Me...

Embodiment 2

[0038] Prepare a limescale cleaner according to the following recipe:

[0039] components

weight percentage (%)

Sulfuric acid with a mass concentration of 98%

5

Fulvic acid

0.5

citric acid

5

Sorbitan monopalmitate

0.5

[0040] Benzotriazole

3.5

polyacrylamide

0.6

Sulfite

0.5

water

84.4

[0041] The preparation method of the present embodiment is as follows:

[0042] (1) add the water of 50% of total water amount in reactor, at normal temperature, add the sulfuric acid that mass concentration is 98% while stirring, leave standstill after dissolving completely;

[0043] (2) Add benzotriazole and sodium sulfite respectively to the sulfuric acid solution prepared in step (1), after stirring evenly, add sorbitan monopalmitate, fulvic acid and citric acid, and continue to stir until the solution is uniformly dispersed;

[0044] (3) Melt the polyacrylamide with the...

Embodiment 3

[0046] Prepare a limescale cleaner according to the following recipe:

[0047]

[0048] The preparation method of the present embodiment is as follows:

[0049] (1) add the water of total water yield 50% in reactor, at normal temperature, add the nitric acid that mass concentration is 66.5% while stirring, leave standstill after dissolving completely;

[0050] (2) In the nitric acid solution prepared in step (1), add respectively a mixture of mercaptobenzothiazole and cetylamine in a mass ratio of 1:1 and sodium erythorbate, after stirring evenly, then add dodecylbis( Aminoethyl)-glycine hydrochloride, fulvic acid and citric acid, continue to stir until the solution is evenly dispersed;

[0051] (3) Melt the polyacrylamide with the remaining 50% of water to form a viscous uniform liquid, pour it into the mixed solution prepared in step (2) while stirring, and stir evenly to obtain the finished scale cleaning agent.

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Abstract

The invention provides a scale cleaning agent and a preparation method thereof. The scale cleaning agent is prepared from the following raw materials in percentage by mass: 5%-15% of inorganic acid, 0.1%-0.5% of fulvic acid, 1%-5% of citric acid, 0.1%-1% of a surfactant, 0.5%-3.5% of a corrosion inhibitor, 0.4%-1% of a thickener, 0.5%-2% of a reducing agent and the balance of water. The preparation method comprises the following steps: adding 50% of water to a reaction kettle; adding an inorganic acid while stirring at room temperature; completely dissolving and then standing; respectively adding the corrosion inhibitor, the reducing agent, the surfactant, the fulvic acid and the citric acid to an acid solution; continuing to stir until the solution is dispersed evenly; dissolving the thickener with residual 50% of water; pouring into the prepared mixed solution while stirring; and stirring evenly, so as to prepare the finished product. According to the scale cleaning agent provided by the invention, the advantages of two pickling scale cleaning agents are effectively synthesized, the scale removing efficiency is ensured, and the corrosion to a pipeline and equipment can also be relieved.

Description

technical field [0001] The invention relates to the field of chemical cleaning agents, in particular to a scale cleaning agent and a preparation method thereof. Background technique [0002] The water circulation system is widely used in various fields of industry, and its roles in heating, cooking, drying, factory building or people's living heating and hot water supply are irreplaceable. However, the water also contains a variety of minerals, which will continue to concentrate in the water circulation system and deposit to form scale, which seriously affects industrial production and people's life and health. In order to eliminate the harm of scale, once scale occurs, it needs to be cleaned to remove it. [0003] At present, the common scale treatment methods in the industry include: pickling, alkali washing and physical cleaning. [0004] Pickling is divided into inorganic pickling and organic pickling. Inorganic pickling such as hydrochloric acid has low cost and good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D3/30C11D3/04C11D3/34C11D3/60C23G1/06
Inventor 张学平朱忠海
Owner SUZHOU CHANGSHENG ELECTROMECHANICAL
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