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Compound low-phosphorous corrosion inhibition and scale inhibition medicament and preparation method thereof

A technology of corrosion and scale inhibition and medicament, which is applied in the field of compound low-phosphorus corrosion and scale inhibition medicament and its preparation, can solve the problems of ecological destruction, eutrophication of water body, etc., achieve reduced usage, low total phosphorus content, suitable for The effect of biodegradation

Active Publication Date: 2016-12-14
鞍钢栗田(鞍山)水处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under the condition of high temperature and high turbid water quality, the use of organophosphorus corrosion and scale inhibitors generally needs to maintain a higher total phosphorus, because the total phosphorus will be consumed by high temperature and oil pollution, generally controlled at 10mg / L or more, in order to achieve corrosion inhibition. Scale dual function, and the discharged circulating cooling water contains a lot of phosphorus, resulting in eutrophication of the water body, resulting in ecological damage

Method used

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  • Compound low-phosphorous corrosion inhibition and scale inhibition medicament and preparation method thereof
  • Compound low-phosphorous corrosion inhibition and scale inhibition medicament and preparation method thereof
  • Compound low-phosphorous corrosion inhibition and scale inhibition medicament and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] 20 parts of heptadecenyl hydroxyethyl imidazoline quaternary ammonium salt (OED produced by Qinhuangdao Shengli Chemical Co., Ltd.); 15 parts of polyaspartic acid; 2-phospho-1,2,4-tricarboxylic butane Add 10 parts and 30 parts of water into the reaction kettle, and then stir at a rotation speed of 100 rpm. After the solution is uniformly mixed, raise the temperature to 45°C and continue stirring for 20 minutes to obtain solution A;

[0034] Add 8 parts of hexadecyldimethyl (2-sulfite) ethylammonium (produced by Hebei Lanqing Water Treatment Technology Co., Ltd.) into solution A, adjust the rotation speed to 150rpm and mix and stir to make it completely dissolved, then add anhydrous chlorine 13 parts of zinc chloride, continue to stir until the solution is clear, then add 5 parts of dimethylformamide and continue to stir for 30 minutes, keep warm for 2 hours, mix well, cool and stand still, and the finished product is obtained.

Embodiment 2

[0036] 17 parts of heptadecenyl hydroxyethyl imidazoline quaternary ammonium salt (OED produced by Qinhuangdao Shengli Chemical Co., Ltd.); 18 parts of polyaspartic acid; 2-phospho-1,2,4-tricarboxylic butane Add 8 parts and 38 parts of water into the reaction kettle, and then stir at a rotation speed of 110 rpm. After the solution is uniformly mixed, raise the temperature to 40°C and continue stirring for 30 minutes to obtain solution A;

[0037] Add 5 parts of hexadecyldimethyl (2-sulfurous acid) ethyl ammonium (produced by Hebei Lanqing Water Treatment Technology Co., Ltd.) into solution A, adjust the rotation speed to 150rpm and mix and stir to make it completely dissolved, then add sulfuric acid heptahydrate 20 parts of zinc, continue to stir until the solution is clear, then add 4 parts of dimethylformamide and continue to stir for 30 minutes, keep warm for 2 hours, mix well, cool and stand still, and the finished product is obtained.

Embodiment 3

[0039] 23 parts of heptadecenyl hydroxyethyl imidazoline quaternary ammonium salt (OED produced by Qinhuangdao Shengli Chemical Co., Ltd.); 13 parts of polyaspartic acid; 2-phospho-1,2,4-tricarboxylic butane Add 13 parts and 35 parts of water into the reaction kettle, and then stir at a rotation speed of 110 rpm. After the solution is uniformly mixed, heat up to 50°C and continue stirring for 25 minutes to obtain solution A;

[0040] Add 10 parts of hexadecyldimethyl (2-sulfite) ethyl ammonium (produced by Hebei Lanqing Water Treatment Technology Co., Ltd.) into solution A, adjust the rotation speed to 150rpm and mix and stir to make it completely dissolved, then add anhydrous chlorine 11 parts of zinc chloride, continue to stir until the solution is clear, then add 5 parts of dimethylformamide and continue to stir for 30 minutes, keep warm for 2 hours, mix well, cool and stand still, and the finished product is obtained.

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Abstract

The invention relates to a compound low-phosphorous corrosion inhibition and scale inhibition medicament and a preparation method thereof. The compound low-phosphorous corrosion inhibition and scale inhibition medicament is prepared from the following components in parts by mass: 15 to 25 parts of heptadeca-alkenyl ethoxyl-imidazoline-ammonium-salt, 1 to 15 parts of hexadecyl dimethyl (2-sulphurous acid) ethyl ammonium, 10 to 20 parts of polyaspartic acid, 10 to 35 parts of zinc salt, 5 to 15 parts of 2-phosphate-1,2,4-tricarboxylic acid butane, 1 to 10 parts of a cosolvent and 30 to 60 parts of water. The compound low-phosphorous corrosion inhibition and scale inhibition medicament is suitable for being used in a high-temperature, high-turbidity and strong-corrosive environment, is low in total phosphorus control, has sterilization effect, can be naturally degraded, is environmentally friendly, and is excellent in corrosion inhibition, scale inhibition performance and scale inhibition dispersibility.

Description

technical field [0001] The invention relates to corrosion and scale inhibitors, in particular to a composite low-phosphorus corrosion and scale inhibitor suitable for high-temperature and high-turbidity water and its preparation method Background technique [0002] The use of circulating cooling water in industrial production is increasing. In order to save water, reduce energy consumption, and ensure the safety and stability of equipment, corrosion and scale inhibition treatment technology has emerged. In the early stage, water treatment agents such as chromate, phosphate, and nitrite were used in the industry. Among them, organic phosphorus water treatment agents were the most widely used, and they played a considerable role in inhibiting corrosion and scaling of equipment and metal pipes. [0003] Under the condition of high temperature and high turbid water quality, the use of organophosphorus corrosion and scale inhibitors generally needs to maintain a higher total phos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14C02F1/50C02F103/02
CPCC02F1/50C02F5/14C02F2103/023C02F2303/08C02F2303/22
Inventor 张柏鸿王坤鹏李俊峰李红陈奇王雨张宇
Owner 鞍钢栗田(鞍山)水处理有限公司
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