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Corrosion inhibitor for inhibiting seawater with salinity of 25-40 percent and preparation method of corrosion inhibitor

An anti-corrosion agent, seawater technology, applied in the field of metal protective agents, can solve the problems of toxic side effects, poor environmental friendliness, restrictions and phase-out, etc., to achieve the effects of no toxic side effects, improved adsorption capacity, and increased corrosion resistance.

Inactive Publication Date: 2015-01-21
NANJING LISHUI ZHENXING SHIP ACCESSORIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The material corrosion problem caused by seawater has a serious impact on the periodic safe operation of ship equipment. Corrosion inhibitors can effectively prevent or slow down the corrosion rate of seawater on metals, and are easy to use, small in dosage, quick in effect, and low in cost. Corrosion inhibitors are often added to pipelines transporting seawater to prevent equipment corrosion. Existing corrosion inhibitors mainly include inorganic corrosion inhibition compounds such as chromate, nitrate, and nitrite. These corrosion inhibitors have toxic side effects and make water eutrophication , poor environmental friendliness, its application is being restricted and will be phased out, and it does not have market competitiveness

Method used

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  • Corrosion inhibitor for inhibiting seawater with salinity of 25-40 percent and preparation method of corrosion inhibitor

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Effect test

Embodiment 1

[0015] An anti-corrosion agent for seawater with a salinity of 25% to 40%, its components are composed of the following components by weight percentage: 26 parts of urotropine, 28 parts of sodium molybdate, 19 parts of triethanolamine phosphate, and 3.2 parts of thiosemicarbazide , 15 parts of calcium gluconate, 12 parts of rosin amine polyoxyethylene ether, 18 parts of mineral oil, 35 parts of benzotriazole, 15 parts of haloalkylpyridine, and 25 parts of octacosanol.

[0016] The preparation method of the anti-corrosion agent of above-mentioned 25%~40% salinity sea water, described preparation method comprises the steps:

[0017] (1) Weigh the raw material components according to the weight of the above components;

[0018] (2) Put the above-mentioned raw materials in the reaction kettle, heat and mix evenly, heat to 128°C and stir at high speed for 40~60min.

Embodiment 2

[0020] An anti-corrosion agent for seawater with a salinity of 25% to 40%, its components are composed of the following components by weight percentage: 38 parts of urotropine, 18 parts of sodium molybdate, 15 parts of triethanolamine phosphate, and 0.9 part of thiosemicarbazide , 12 parts of calcium gluconate, 10 parts of rosin amine polyoxyethylene ether, 16 parts of mineral oil, 25 parts of benzotriazole, 12 parts of haloalkylpyridine, and 18 parts of octacosanol.

[0021] The preparation method of the anti-corrosion agent of above-mentioned anti-25%~40% salinity sea water, described preparation method comprises the steps:

[0022] (1) Weigh the raw material components according to the weight of the above components;

[0023] (2) Put the above-mentioned raw materials in the reaction kettle, heat and mix them evenly, heat to 158°C and stir at high speed for 30-60 minutes.

Embodiment 3

[0025] An anti-corrosion agent for seawater with a salinity of 25% to 40%, its components are composed of the following components by weight percentage: 29 parts of urotropine, 19 parts of sodium molybdate, 17 parts of triethanolamine phosphate, and 2.8 parts of thiosemicarbazide , 14 parts of calcium gluconate, 11 parts of rosin amine polyoxyethylene ether, 17 parts of mineral oil, 29 parts of benzotriazole, 13 parts of haloalkylpyridine, and 23 parts of octacosanol.

[0026] The preparation method of the anti-corrosion agent of above-mentioned anti-25%~40% salinity sea water, described preparation method comprises the steps:

[0027] (1) Weigh the raw material components according to the weight of the above components;

[0028] (2) Put the above-mentioned raw materials in the reaction kettle, heat and mix them evenly, heat to 158°C and stir at high speed for 30-60 minutes.

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Abstract

The invention discloses a corrosion inhibitor for inhibiting seawater with the salinity of 25-40 percent. The corrosion inhibitor comprises the following components in percentage by weight: 26-38 parts of urotropin, 18-28 parts of sodium molybdate, 15-19 parts of phosphoric acid triethanolamine, 0.9-3.2 parts of thiosemicarbazide, 12-15 parts of calcium gluconate, 10-12 parts of rosin amine polyoxylethylene ether, 16-18 parts of mineral oil, 25-35 parts of benzotriazole, 12-15 parts of halogenated alkyl pyridine and 18-25 parts of octacosanol. The corrosion inhibitor can be firmly combined with carbon steel under the action of urotropin, sodium molybdate, rosin amine polyoxylethylene ether, halogenated alkyl pyridine and the mineral oil, so that the adsorption capacity of the corrosion inhibitor to a deck is greatly improved; the corrosion resistance of a metal surface can be enhanced; furthermore, the corrosion inhibitor is environment-friendly and has no toxic or side effect.

Description

technical field [0001] The invention relates to a metal protective agent, in particular to an anticorrosion agent for preventing seawater with a salinity of 25% to 40% and a preparation method thereof. Background technique [0002] The material corrosion problem caused by seawater has a serious impact on the periodic safe operation of ship equipment. Corrosion inhibitors can effectively prevent or slow down the corrosion rate of seawater on metals, and are easy to use, small in dosage, quick in effect, and low in cost. Corrosion inhibitors are often added to pipelines transporting seawater to prevent equipment corrosion. Existing corrosion inhibitors mainly include inorganic corrosion inhibition compounds such as chromate, nitrate, and nitrite. These corrosion inhibitors have toxic side effects and make water eutrophication , poor environmental friendliness, its application is being restricted and will be phased out, and it does not have market competitiveness. Therefore ne...

Claims

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Application Information

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IPC IPC(8): C23F11/167
Inventor 姚红花
Owner NANJING LISHUI ZHENXING SHIP ACCESSORIES
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