Scale inhibitor and application thereof

A scale inhibitor and water quality technology, applied in the field of scale inhibitors, can solve the problems of complex preparation process, increased application difficulty, and narrow application range of horse-propylene copolymer, and achieve improved scale inhibition efficiency, stable existence, and high scale inhibition efficiency Effect

Pending Publication Date: 2018-01-30
CECEP L&T ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The barium-strontium scale inhibitor is mainly aimed at the technical problem of severe scaling in the process of oil exploitation, hard and difficult to remove after forming barium-strontium scale, the application range is too narrow, and the preparation process of the required horse-propylene copolymer is relatively complicated, which increases the difficulty of application

Method used

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  • Scale inhibitor and application thereof
  • Scale inhibitor and application thereof
  • Scale inhibitor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this example, the antiscalant consists of the following components:

[0029] Component A: polyepoxysuccinic acid, component B: diethylenetriaminepentamethylenephosphonic acid, component C: 2-phospho-1,2,4-tricarboxylic butane and component D: poly Aspartic acid, the mass ratio of components A, B, C and D in the scale inhibitor is: 1:4:7:1.

[0030] The scale inhibitor of this embodiment is used for water descaling, and the conditions during application are as follows:

[0031] Water quality conditions: pH=10, water temperature is 60°C, Ca 2+ The concentration is 240mg / L, HCO 3 - The concentration is 320mg / L; the amount of antiscalant added is 6.5mg / L water.

[0032] Calcium carbonate scale inhibition rate: 92%.

Embodiment 2

[0034] In this example, the antiscalant consists of the following components:

[0035] Component A: polyepoxysuccinic acid, component B: diethylenetriaminepentamethylenephosphonic acid, component C: 2-phospho-1,2,4-tricarboxylic butane and component D: poly Aspartic acid, the mass ratio of components A, B, C and D in the scale inhibitor is: 1:4:7.5:1.5.

[0036] The scale inhibitor of this embodiment is used for water descaling, and the conditions during application are as follows:

[0037] Water quality conditions: pH=6, water temperature is 60°C, Ca 2+ The concentration is 240mg / L, HCO 3 - The concentration is 320mg / L; the amount of antiscalant added is 6.5mg / L water.

[0038] Calcium carbonate scale inhibition rate: 93%.

Embodiment 3

[0040] In this example, the antiscalant consists of the following components:

[0041] Component A: polyepoxysuccinic acid, component B: diethylenetriaminepentamethylenephosphonic acid, component C: 2-phospho-1,2,4-tricarboxylic butane and component D: poly Aspartic acid, the mass ratio of components A, B, C and D in the scale inhibitor is: 1:5:9:2.

[0042] The scale inhibitor of this embodiment is used for water descaling, and the conditions during application are as follows:

[0043] Water quality conditions: pH=8, water temperature is 60°C, Ca 2+ The concentration is 280mg / L, HCO 3 - The concentration is 450mg / L; the amount of scale inhibitor added is 6.5mg / L water.

[0044] Calcium carbonate scale inhibition rate: 93.8%.

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PUM

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Abstract

The invention discloses a scale inhibitor and application thereof. The scale inhibitor is prepared from the following components: polyepoxysuccinic acid (A), diethylenetriaminepenta acid (B), 2-phosphonobutane-1,2,4-tricarboxylic acid (C) and polyaspartic acid (D). The scale inhibitor disclosed by the invention has high scale inhibition efficiency; moreover, compared with a general scale inhibitor, the scale inhibitor provided by the invention still has a very high scale inhibition rate when the pH value is within the range of 9 to 11.

Description

technical field [0001] The invention belongs to the field of water treatment and relates to a scale inhibitor and its application. Background technique [0002] With the continuous development of the economy, the consumption of water by human society is also increasing. Water reserves are large and widely distributed, but the part that can be treated and used is not very high. Therefore, it is particularly important to improve water utilization and increase the number of repeated uses. Industrial water accounts for more than 65% of the total urban water use, most of which are circulating water and cooling water. Therefore, saving circulating water and cooling water is of great significance to the construction of a water-saving society in my country, and increasing the consumption of circulating water and cooling water Concentration multiple is an effective way to save the water consumption of the circulating cooling water system; to solve the water consumption problem of th...

Claims

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Application Information

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IPC IPC(8): C02F5/14
Inventor 伊洋王吉特曾辉狄宇李冬芳宋宝华张文婷
Owner CECEP L&T ENVIRONMENTAL TECH
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