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Corrosion inhibitor for boiler acid washing and production method thereof

A boiler acid and corrosion inhibitor technology, applied in chemical instruments and methods, complex/solubilizer treatment, water/sludge/sewage treatment, etc., can solve problems such as strong irritating odor, short shelf life, and unstable performance. , to achieve the effect of stable chemical properties, low toxicity and strong scale-dissolving ability

Inactive Publication Date: 2013-04-03
江苏凯弘新能源管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the existing corrosion inhibitors for boiler pickling is not stable enough, the shelf life is short, and there is a strong pungent smell

Method used

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  • Corrosion inhibitor for boiler acid washing and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Raw material preparation:

[0030] Weigh 100 kilograms of raw materials, of which:

[0031] 3 kg of citric acid;

[0032] N, N-bisphosphonomethyl aspartic acid 10 kg;

[0033] Lauryl betaine 0.5 kg;

[0034] Thiourea 0.3 kg;

[0035] 0.5 kg of diethylenetriaminepentamethylenephosphonic acid;

[0036] 2.5 kg of 2-phosphono-1,2,4-tricarboxylic butane;

[0037] Tolyltriazole 0.5 kg;

[0038] 1.5 kg of N-alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt;

[0039] Sodium alginate 0.5 kg;

[0040] Sodium chromate 3 kg;

[0041] Zinc chloride 0.5 kg.

[0042] The balance is water.

[0043] That is, water and dialkyl betaine, thiourea, diethylenetriaminepentamethylenephosphonic acid, 2-phosphono-1,2,4-tricarboxylic butane, methylbenzotriazole, N- The total weight of alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt, sodium alginate, sodium chromate, zinc chloride, citric acid and N,N-bisphosphonomethylaspartic acid is 100 kg.

[0044] H...

Embodiment 2

[0051] Raw material preparation:

[0052] Weigh 100 kilograms of raw materials, of which:

[0053]6 kg of citric acid;

[0054] N, N-bisphosphonomethyl aspartic acid 5 kg;

[0055] Lauryl betaine 1.5 kg;

[0056] Thiourea 0.1 kg;

[0057] 2.5 kg of diethylenetriaminepentamethylenephosphonic acid;

[0058] 2-phosphono-1,2,4-tricarboxylic acid butane 0.5 kg;

[0059] Tolyltriazole 1.5 kg;

[0060] 0.5 kg of N-alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt;

[0061] Sodium alginate 1.5 kg;

[0062] Sodium chromate 1 kg;

[0063] Zinc chloride 1.5 kg.

[0064] The balance is water.

[0065] That is, water and dialkyl betaine, thiourea, diethylenetriaminepentamethylenephosphonic acid, 2-phosphono-1,2,4-tricarboxylic butane, methylbenzotriazole, N- The total weight of alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt, sodium alginate, sodium chromate, zinc chloride, citric acid and N,N-bisphosphonomethylaspartic acid is 100 kg.

[0066] H...

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Abstract

The invention discloses a corrosion inhibitor for boiler acid washing and a production method thereof, wherein the corrosion inhibitor for boiler acid washing consists of the following components according to mass percent: 3-6% of citric acid, 5-10% of N, N-double-phosphine acyl methyl aspartic acid, 0.5-1.5% of dodecyl betaine, 0.1-0.3% of thiourea, 0.5-2.5% of methylene phosphonic acid, 0.5-2.5% of 2-phosphonate-1, 2, 4-tricarboxylic acid butane, 0.5-1.5% of tdlyltriazole, 0.5-1.5% of N-alkylamino-2-perfluoroalkyl imidazoline quaternary ammonium salt, 0.5-1.5% of sodium alginate, 1-3% of sodium chromate, 0.5-1.5% of zinc chloride and the balance of water. The corrosion inhibitor for boiler acid washing has a good corrosion inhibition effect and good applicability, the static corrosion speed is lower than 0.2g / m<2> h, a test block is bright after the cleaning, harmful film is not left, and the dirty dissolving capability is strong.

Description

technical field [0001] The invention relates to a corrosion inhibitor and a preparation method thereof, in particular to a corrosion inhibitor for boiler pickling and a preparation method thereof. Background technique [0002] The development and progress of human beings are based on natural resources and the environment on which human beings live. my country is relatively rich in fresh water resources, ranking fifth in the world. But per capita resources rank eighteenth in the world. Therefore, water resources are not rich. With the growth of population and the rapid development of economy in our country, the limited water resources are even more in short supply. my country's water pollution is also very serious. From the perspective of the national situation, the current urban water shortage is serious, which has caused serious economic losses and social and environmental problems. The distribution of water-shortage cities has gradually spread to the whole country fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/08C02F5/10C02F5/14
Inventor 宋国新黄毅
Owner 江苏凯弘新能源管理有限公司
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