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Polyepoxysuccinic acid water treatment agent

A technology of polyepoxysuccinic acid and water treatment agent, applied in water/sludge/sewage treatment, special treatment targets, descaling and water softening, etc. Problems such as the cost of oxysuccinic acid modification

Inactive Publication Date: 2016-09-07
上海多佳水处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like this, will undoubtedly increase the modification cost of polyepoxysuccinic acid (or increase the cost of polyepoxysuccinic acid water treatment agent), and the improvement of the corrosion inhibition performance of these modified products is not remarkable

Method used

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  • Polyepoxysuccinic acid water treatment agent
  • Polyepoxysuccinic acid water treatment agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of polyepoxysuccinic acid water treatment agent

[0038] 1) Add 24.5 g of maleic anhydride and 30 ml of deionized water into a 250 mL four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, and stir. In the process of continuous stirring, 25% ammonia water is added dropwise into the maleic anhydride solution through the dropping funnel, and acid-base neutralization reaction occurs until pH=6. At this time, about 35ml of ammonia water is added dropwise, and the temperature rises rapidly during this process. It is necessary to control the temperature of the system below 40°C, and then continue to stir the reaction for 5 minutes after the ammonia water is added dropwise to obtain a mixture containing intermediate A-1, which is directly used in the next reaction.

[0039] 2) Heating in a water bath, when the temperature in the four-necked flask was 60°C, add 0.825g of Na in the four-necked flask earlier 2 WO 4 2H 2 O (catalyst), then ...

Embodiment 2

[0043] Preparation of the composition containing polyepoxysuccinic acid water treatment agent of the present invention

[0044] The composition is composed of: object-1, polyepoxysuccinic acid (PESA), zinc salt, benzotriazole (BTA) and water are uniformly mixed according to the following mass percentage to obtain composition A.

[0045]

[0046] In the composition A, the dosage of PESA is calculated by effective matter, the zinc salt is zinc sulfate, and the dosage is measured by the amount of Zn. Composition A is applied to circulating cooling water, and the dosage is 50-200 mg / L.

Embodiment 3

[0048] Preparation of the composition containing polyepoxysuccinic acid water treatment agent of the present invention

[0049] The composition is composed of: Target-1, maleic acid-acrylic acid copolymer (MA-AA), zinc salt, BTA and water are uniformly mixed according to the following mass percentages to obtain composition B.

[0050]

[0051]

[0052] In the composition B, the dosage of MA-AA is calculated by effective matter, the zinc salt is zinc sulfate, and the dosage is measured by the amount of Zn. Composition B is applied to circulating cooling water, and the dosage is 50-200 mg / L.

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PUM

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Abstract

The invention relates to a polyepoxy succinic acid type water treating agent which is used for circularly cooling water and has a corrosion inhibition effect and a scale inhibition effect. The polyepoxy succinic acid type water treating agent is prepared from a raw material maleic anhydride which sequentially has a salt forming reaction, an olefin oxidation reaction, an epoxide loop-opening polymerization reaction and a deamination reaction with ammonia water. Under a condition that the temperature is 40 DEG C and the feeding concentration is 90mg / L, the corrosion inhibition of the polyepoxy succinic acid type water treating agent disclosed by the invention is 85% to 90%. Besides, the polyepoxy succinic acid type water treating agent disclosed by the invention also has the characteristics of being free of phosphorus, easy to degrade, environmentally friendly and the like.

Description

technical field [0001] The invention relates to a polyepoxysuccinic acid water treatment agent, in particular to a polyepoxysuccinic acid water treatment agent which is used for circulating cooling water and has the functions of corrosion inhibition and scale inhibition. Background technique [0002] In circulating cooling water systems, corrosion and fouling can have serious consequences. Corrosion and scale inhibitors can prevent metal corrosion and control scaling, and play a very important role in energy saving, emission reduction, and water resource conservation. At present, most of the commonly used corrosion and scale inhibitors in China are phosphorus-containing chemicals, such as polyphosphates, organic phosphine polymers, etc. Among them, organic phosphine polymers are the most effective water treatment agents with dual functions of corrosion inhibition and scale inhibition, but the discharge of these phosphorus-containing compounds will cause eutrophic pollution ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/10
CPCC02F5/10C02F2303/08C02F2303/22
Inventor 陈康焦莉莉冯长春朱康生周国光
Owner 上海多佳水处理科技有限公司