Preparation method of environment-friendly corrosion and scale inhibitor

A corrosion and scale inhibitor, a green and environmentally friendly technology, applied in chemical instruments and methods, descaling and water softening, complex/solubilizer treatment, etc. Unfriendly and other problems, to achieve the effect of improving corrosion inhibition rate, reducing dosage, and excellent scale inhibition performance

Active Publication Date: 2015-12-30
马鞍山市鸿伟环化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that 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 preparation method of a green and environment-friendly corrosion and scale inhibitor. Corrosion and scale inhibitors have 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 a preparation method of an environment-friendly corrosion and scale inhibitor, and belongs to the field of water treatment. The environment-friendly corrosion and scale inhibitor consists of water, a polyaspartic acid, sodium tungstate, alkyl glycoside and phthalate diethyleneglycol diacrylate (PDDA). The preparation method comprises the following steps of dissolving PDDA in an aqueous solution containing sodium tungstate; and adding the polyaspartic acid and the alkyl glycoside at a relatively low stirring speed. The PDDA can wrap the polyaspartic acid and the alkyl glycoside to form microemulsion droplets so that the corrosion and scale inhibiting efficiencies of the polyaspartic acid, the alkyl glycoside and the sodium tungstate are high, 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 or crops, no breeding of microorganisms and the like, and belongs to an environment-friendly corrosion inhibitor. The environment-friendly corrosion and scale inhibitor has the advantages of simple preparation technology, mild conditions, easiness in operation and the like, and can be widely used in various water treatment fields.

Description

[0001] The present invention is a divisional application, the original Chinese patent application number: 201410624288X, the application date: November 6, 2014, the patent name at the time of application: a green environment-friendly corrosion and scale inhibitor and its preparation method. technical field [0002] The invention belongs to the field of water treatment, and more specifically relates to a preparation method of a green and environment-friendly corrosion and scale inhibitor. Background technique [0003] 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08C02F5/10C02F5/12
CPCC23F11/14C02F5/10C02F5/125
Inventor 孙立明贾虹孙若思
Owner 马鞍山市鸿伟环化有限公司
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