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Preparation method and application of corrosion and scale inhibitor for ethylene glycol sealed circulating water

A corrosion and scale inhibitor, closed cycle technology, applied in the direction of scale removal and water softening, chemical instruments and methods, complex / solubilizer treatment, etc., to achieve good corrosion and scale inhibition performance, reduce formation, prolong service life Effect

Active Publication Date: 2014-02-05
CNOOC TIANJIN CHEM RES & DESIGN INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the water treatment chemicals with strong corrosion inhibition properties for general circulating water are used, and the water treatment chemicals with strong corrosion inhibition properties for general circulating water are not suitable for ethylene glycol closed circulating water systems

Method used

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  • Preparation method and application of corrosion and scale inhibitor for ethylene glycol sealed circulating water
  • Preparation method and application of corrosion and scale inhibitor for ethylene glycol sealed circulating water
  • Preparation method and application of corrosion and scale inhibitor for ethylene glycol sealed circulating water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of component A: Take 16g of sodium hydroxide, add 94g of demineralized water, fully stir until the sodium hydroxide is completely dissolved, then add 30g of acrylic acid-acrylamide-acrylic acid-β-hydroxypropyl ester copolymer, stir evenly, then add soluble molybdenum Acetate 50g, then stir until the solution is uniform, finally add 10g of benzotriazole, mix and stir evenly.

[0023] Preparation of component B: Add 5g of zinc chloride to 48g of demineralized water to fully dissolve, then add 10g of N-lauroyl sarcosine, 7g of sodium gluconate, itaconic acid-acryloyl morpholine-N-acryloyl-N-methyl Propyl phosphonic acid copolymer 30g is uniformly prepared by mixing and stirring.

Embodiment 2

[0025] Preparation of component A: Take 16g of sodium hydroxide, add 94g of demineralized water, fully stir until the sodium hydroxide is completely dissolved, then add 30g of acrylic acid-acrylamide-acrylic acid-β-hydroxypropyl ester copolymer, stir evenly, then add soluble molybdenum Acetate 50g, then stir until the solution is uniform, finally add 10g of benzotriazole, mix and stir evenly.

[0026] Preparation of component B: Add 5g of zinc chloride to 48g of demineralized water to fully dissolve, then add 10g of N-lauroyl sarcosine, 7g of sodium gluconate, itaconic acid-acryloyl morpholine-N-acryloyl-N-methyl Propyl phosphonic acid copolymer 30g is uniformly prepared by mixing and stirring.

Embodiment 3

[0028] Preparation of component A: Take 16g of sodium hydroxide, add 94g of demineralized water, fully stir until the sodium hydroxide is completely dissolved, then add 30g of acrylic acid-acrylamide-acrylic acid-β-hydroxypropyl ester copolymer, stir evenly, then add soluble molybdenum Acetate 50g, then stir until the solution is uniform, finally add 10g of benzotriazole, mix and stir evenly.

[0029] Preparation of component B: Add 5g of zinc chloride to 48g of demineralized water to fully dissolve, then add 10g of N-lauroyl sarcosine, 7g of sodium gluconate, itaconic acid-acryloyl morpholine-N-acryloyl-N-methyl Propyl phosphonic acid copolymer 30g is uniformly prepared by mixing and stirring.

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Abstract

The invention relates to a preparation method and application of a corrosion and scale inhibitor for ethylene glycol sealed circulating water. The corrosion and scale inhibitor is characterized by being prepared by respectively compounding, mixing and stirring a component A and a component B. The component A contains soluble molybdate, benzotriazole, an acrylic acid-acrylamide-acrylic acid-beta-hydroxyl propyl ester copolymer, sodium hydroxide and softened water. The component B contains an N-sodium lauroyl sarcosinate, sodium gluconate, itaconic acid-acryloyl morpholine-N-acryloyl-N-methyl propyl phosphonic acid copolymer, zinc chloride and softened water. The proportion of sum of weight is as follows: A:B=2:1. The corrosion and scale inhibitor is used for ethylene glycol sealed circulating water. The reagent treatment addition is 0.15-0.20g / 100ml of water.

Description

technical field [0001] The invention relates to the field of water treatment agents for closed circulating water systems, in particular to a preparation method and application of an ethylene glycol closed circulating water corrosion and scale inhibitor. Background technique [0002] In industrial production and scientific research, it is often necessary to use a refrigerator to indirectly cool the object to be cooled, or to transport the cold energy over a long distance. This requires cooling an intermediate substance in the evaporator, and then using it to cool the object to be cooled. The refrigerant is an intermediate substance used to transmit the cold generated by the refrigerator to the object to be cooled. It is stable in nature and miscible with water. The freezing temperature of its solution changes with the concentration. Usually, their aqueous solution is used as the refrigerant , The applicable temperature range is 0-20°C. Compared with other antifreeze agents, ...

Claims

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Application Information

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IPC IPC(8): C02F5/08C02F5/14
CPCC23F11/08
Inventor 郭勇李红兵康宏磊董可然
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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