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Scale and corrosion inhibitor for high-alkalinity and high-hardness water

A scale and corrosion inhibitor, high hardness technology, applied in the field of high alkalinity, high hardness water scale and corrosion inhibitor, can solve the problem of poor corrosion inhibition effect of carbon steel, can not meet the national standard requirements of carbon steel corrosion rate and so on , to achieve the effect of strong chlorine resistance and high calcium tolerance

Active Publication Date: 2015-07-08
SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The existing scale inhibitors generally have the problem of poor corrosion inhibition effect on carbon steel, and cannot meet the national standard requirements for carbon steel corrosion rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A scale and corrosion inhibitor used for high alkalinity and high hardness water, each component is composed according to the following mass ratio.

[0019] Aminotrimethylenephosphonic acid 16%

[0020] Sodium lauryl polyoxyethylene ether (AE-9) carboxylate 13%

[0021] Zinc Chloride 2.5%

[0022] The rest was made up with deionized water.

Embodiment 2

[0024] A scale and corrosion inhibitor used for high alkalinity and high hardness water, each component is composed according to the following mass ratio.

[0025] Diethylenetriaminepentamethylenephosphonic acid 17.5%

[0026] Sodium lauryl polyoxyethylene ether (AE-9) carboxylate 13%

[0027] Zinc Chloride 3.5%

[0028] The rest was made up with deionized water.

Embodiment 3

[0030] A scale and corrosion inhibitor used for high alkalinity and high hardness water, each component is composed according to the following mass ratio.

[0031] Hydroxyethylenediphosphonic acid 7%

[0032] 2-Hydroxyphosphonoacetic acid 9.6%

[0033] Lauryl polyoxyethylene ether (AE-7) ammonium carboxylate 11%

[0034] Zinc chloride 4.7%

[0035] The rest was made up with deionized water.

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PUM

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Abstract

The invention discloses a scale and corrosion inhibitor composition with relatively low phosphorus content, which is special for high-alkalinity and high-hardness water. The composition comprises fatty alcohol-polyoxyethylene ether carboxylate, an organic phosphine scale and corrosion inhibitor, zinc salt and the balance of deionized water. The scale and corrosion inhibitor can be used for a cooling water system with high pH value, alkalinity, hardness and concentration multiple, and has a good corrosion inhibition effect on carbon steel.

Description

technical field [0001] The invention belongs to the field of water treatment chemicals and provides a scale and corrosion inhibitor for high alkalinity and high hardness water. Background technique [0002] High water consumption and low reuse rate are major disadvantages of water resources utilization in industrial systems, especially for my country, a country with a lack of per capita water resources, where the shortage of water resources will seriously restrict economic development. As we all know, adding scale and corrosion inhibitors to the cooling water system to control the scaling and corrosion of the water system, to achieve the recycling of circulating water, and to increase the concentration of circulating water is one of the main methods of saving water in the industrial field. In the operation and management of industrial circulating water systems, the concentration ratio is an important technical index to determine the recycling rate of cooling water, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C02F5/10C02F5/08
Inventor 刘强王东宇万振涛刘全华闫鹏李鹏飞张秀华
Owner SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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