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A green and environment-friendly corrosion and scale inhibitor

A corrosion and scale inhibitor, a green and environmentally friendly technology, applied in the field of water treatment, can solve the problems of complex components, unfriendly environment, human body and crops, and high production cost, so as to achieve improved corrosion inhibition rate, excellent scale inhibition performance, and reduced The effect of dosage

Active Publication Date: 2016-03-09
MAANSHAN HONGWEI ENVIRONMENTAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing corrosion and scale inhibitors have complex components, high preparation cost, and unfriendly to the environment, human body and crops, the present invention provides a green and environment-friendly corrosion and scale inhibitor, the corrosion and scale inhibitor of the present invention The agent has the advantages of simple production process, high scale inhibition efficiency, good corrosion inhibition performance, and environmental friendliness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A green environment-friendly corrosion and scale inhibitor, comprising polyaspartic acid, sodium tungstate, lauryl glucoside and diethylene glycol diacrylate phthalate, wherein the mass percent of each component is: 40% polyaspartic acid, 18% diethylene glycol diacrylate phthalate, 7% sodium tungstate, 8% lauryl glucoside, and the balance is water. Its preparation steps are:

[0027] (a) Add diethylene glycol diacrylate, sodium tungstate and water into the reaction flask according to the above ratio, heat to 45°C, and stir at 180rpm for 1h to make diethylene diphthalate Alcohol diacrylate and sodium tungstate fully dissolved;

[0028] (b) Cool the solution obtained in step (a) to 30° C., and then add polyaspartic acid and dodecyl glucoside dropwise to the solution in step (a) according to the above ratio under the stirring condition of 100 rpm The microemulsification reaction was carried out in the reaction bottle, and after 3 hours of reaction, a green and environmen...

Embodiment 2

[0033] A green and environment-friendly corrosion and scale inhibitor, including polyaspartic acid, sodium tungstate, stearyl glucoside and diethylene glycol diacrylate phthalate, the mass percentage of each component is: polytian 60% aspartic acid, 12% diethylene glycol diacrylate phthalate, 15% sodium tungstate, 5% stearyl glucoside, and the balance is water. Its preparation steps are:

[0034] (a) Add diethylene glycol diacrylate, sodium tungstate and water into the reaction flask according to the above ratio, heat to 60°C, and stir at 200rpm for 1.5h to make diethylene phthalate Glycol diacrylate and sodium tungstate fully dissolved;

[0035] (b) Cool the solution obtained in step (a) to 30°C, then add polyaspartic acid and octadecyl glucoside dropwise to the reaction in step (a) according to the above ratio under the stirring condition of 110rpm The microemulsification reaction was carried out in the bottle, and after 4 hours of reaction, a green and environment-friendl...

Embodiment 3

[0040] A green environment-friendly corrosion and scale inhibitor, including polyaspartic acid, sodium tungstate, lauryl glucoside and diethylene glycol diacrylate phthalate, the mass percentage of each component is: poly 50% aspartic acid, 20% diethylene glycol diacrylate phthalate, 13% sodium tungstate, 10% lauryl glucoside, and the balance is water. Its preparation steps are:

[0041] (a) Add diethylene glycol diacrylate, sodium tungstate and water into the reaction flask according to the above ratio, heat to 50°C, and stir at 250rpm for 1 hour to make diethylene diphthalate Alcohol diacrylate and sodium tungstate fully dissolved;

[0042] (b) Cool the solution obtained in step (a) to 30° C., then add polyaspartic acid and dodecyl glucoside dropwise to the solution in step (a) under the stirring condition of 120 rpm The microemulsification reaction was carried out in the reaction bottle, and after 3.5 hours of reaction, a green and environment-friendly corrosion and scale...

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Abstract

The invention discloses an environment-friendly corrosion and scale inhibitor and a preparation method thereof and belongs to the field of water treatment. The corrosion and scale inhibitor comprises water, polyaspartic acid, sodium tungstate, alkyl glycoside and phthalate diethyleneglycol diacrylate (PDDA). The preparation method comprises the following steps: firstly dissolving PDDA in an aqueous solution containing sodium tungstate, adding polyaspartic acid and alkyl glycoside at a relatively low stirring speed, and enabling PDDA to wrap polyaspartic acid and alkyl glycoside to form microemulsion droplets so that the corrosion and scale inhibiting efficiencies of polyaspartic acid, alkyl glycoside and sodium tungstate are higher and the service life is prolonged. The corrosion and scale inhibitor has the characteristics of small usage amount, good treatment effect, low toxicity, no harm to the environment, human body and crops, no breeding of microorganisms and the like and belongs to an environment-friendly corrosion inhibitor. The preparation method of the environment-friendly corrosion and scale inhibitor has the characteristics of simple process, mild conditions, easiness in operation and the like and the corrosion and scale inhibitor can be widely used in the field of various water treatment.

Description

technical field [0001] The invention belongs to the field of water treatment, and more specifically relates to a green and environment-friendly corrosion and scale inhibitor. Background technique [0002] In the petrochemical industry, circulating cooling water is accompanied by the whole process of production, accounting for 70-80% of the total water consumption. The continuous evaporation and concentration of circulating cooling water makes the scaling and corrosion of cooling water pipes more serious, and it is easy to breed bacteria algae, so as to affect the heat transfer effect of the equipment and shorten the service life of the equipment. In order to solve these problems, the circulating cooling water must be treated. Developed and recognized in the 1970s as a class of water treatment agent, it has good chemical stability, high temperature resistance, and has the characteristics of less dosage, corrosion inhibition and scale inhibition. In addition, organic phosphon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/08C02F5/10C02F5/12C23F11/14
CPCC02F5/10C02F5/125C23F11/14
Inventor 孙立明李平孙若思唐胜卫贾虹
Owner MAANSHAN HONGWEI ENVIRONMENTAL CO LTD
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