Unlock instant, AI-driven research and patent intelligence for your innovation.

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 descaling and water softening, chemical instruments and methods, complex/solubilizer treatment, etc., to achieve good corrosion and scale inhibition performance, reduce generation, and prolong service life Effect

Active Publication Date: 2014-09-17
CNOOC TIANJIN CHEM RES & DESIGN INST +2
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention is a preparation method and application of a corrosion and scale inhibitor for ethylene glycol airtight circulating water. Said component A contains soluble molybdate, benzotriazole, acrylic acid-acrylamide-acrylic acid-β-hydroxypropyl copolymer, sodium hydroxide, demineralized water; said component B contains N-lauroyl Sarcosine, sodium gluconate, itaconic acid-acryloyl morpholine-N-acryloyl-N-methylpropylphosphonic acid copolymer, zinc chloride, demineralized water, and the ratio of the sum of the weight is A:B =2:1; the purpose is to close the circulating water of ethylene glycol, and the dosage of this agent is 0.15-0.20g / 100ml 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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