Composite scale inhibitor and preparation method thereof

A scale inhibitor and composite technology, applied in the field of scale inhibitors, can solve the problems of exhaustion of scale inhibitors, easy hydrolysis, scaling, etc., and achieve the effect of stable performance, high scale inhibition rate, and not easy to scale

Pending Publication Date: 2020-08-11
SCI GREEN SHANDONG ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of antiscalant is easy to hydrolyze after adding, and in the later stage, it may happen that the antiscalant is exhausted before the next feeding, resulting in scaling
[0004] In addition, due to the low solubility of calcium phosphate, when the concentration of ort...

Method used

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  • Composite scale inhibitor and preparation method thereof
  • Composite scale inhibitor and preparation method thereof
  • Composite scale inhibitor and preparation method thereof

Examples

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preparation example Construction

[0061] A preparation method of composite scale inhibitor, comprising the steps:

[0062] S1: preparing the ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer;

[0063] S2: the ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer prepared in S1 and other raw material components in the above-mentioned composite antiscalant formula according to The above parts by weight are mixed and stirred evenly to obtain the final product of the composite antiscalant.

[0064] Ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer contains strong acid groups, weak acid groups and non-ionic groups in the molecule, similar to the molecules of the dendritic structure, therefore, The copolymer has the properties of adsorption, complexation and chelation, and is resistant to hydrolysis.

[0065] Preferably, the preparation method of ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic...

Embodiment 1

[0074] A composite scale inhibitor, characterized in that: each raw material component comprising the following parts by weight: 20 parts of itaconic acid-polyaspartic acid copolymer, ethylene glycol itaconate-acrylamide-2- 15 parts of methylpropanesulfonic acid-maleic acid copolymer, 5 parts of sulfamic acid, 10 parts of sodium hydroxide, 2 parts of isothiazolinone and 48 parts of water.

[0075] A preparation method of composite scale inhibitor, comprising the steps:

[0076] S1: preparing the ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer;

[0077] S2: the ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer prepared in S1 and other raw material components in the above-mentioned composite antiscalant formula according to The above parts by weight are mixed and stirred evenly to obtain the final product of the composite antiscalant.

[0078] The preparation method of ethylene glycol itaconate-acryl...

Embodiment 2

[0090] A composite antiscalant, is characterized in that: comprise each raw material component of following parts by weight:

[0091] Itaconic acid-polyaspartic acid copolymer 15 parts, ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer 12 parts, sulfamic acid 8 parts, hydrogen 12 parts of sodium oxide, 1 part of polyhexamethylbiguanide hydrochloride and 52 parts of water.

[0092] A preparation method of composite scale inhibitor, comprising the steps:

[0093] S1: preparing the ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer;

[0094] S2: the ethylene glycol itaconate-acrylamide-2-methylpropanesulfonic acid-maleic acid copolymer prepared in S1 and other raw material components in the above-mentioned composite antiscalant formula according to The above parts by weight are mixed and stirred evenly to obtain the final product of the composite antiscalant.

[0095] The preparation method of ethylene ...

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Abstract

The invention relates to the technical field of scale inhibitors, particularly relates to a phosphorus-free and environment-friendly novel composite scale inhibitor which has stable performance and can solve the problem that the traditional polyphosphate scale inhibitor is easy to hydrolyze and has a poor calcium sulfate scale inhibition effect, and specifically relates to a composite scale inhibitor and a preparation method thereof. The composite scale inhibitor comprises the following raw material components in parts by weight: 12-20 parts of an itaconic acid-polyaspartic acid copolymer, 12-18 parts of an ethylene glycol itaconic acid-acrylamide-2-methyl propanesulfonic acid-maleic acid copolymer, 2-8 parts of sulfamic acid, 8-15 parts of sodium hydroxide, 1-5 parts of a surfactant and 46-52 parts of water. The compound scale inhibitor is small in dosage, not prone to scaling after being used and high in scale inhibition rate, the itaconic acid-polyaspartic acid copolymer in the compound scale inhibitor has very high temperature resistance and has scale inhibition and corrosion inhibition effects, itaconic acid is inserted into polymer molecules, and therefore, the scale inhibition and removal performances of the compound scale inhibitor are greatly superior to those of polyphosphate scale inhibitors.

Description

technical field [0001] The invention relates to the technical field of scale inhibitors, in particular to a new compound scale inhibitor which is non-phosphorus, environmentally friendly, stable in performance, and capable of solving the problem of easy hydrolysis of traditional polyphosphate scale inhibitors and poor effect of inhibiting calcium sulfate scale. A compound scale inhibitor and a preparation method thereof. Background technique [0002] Scale inhibitors are a class of agents that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects on metal equipment. [0003] The most commonly used scale inhibitors are metal salts of polyphosphoric acid. However, this kind of antiscalant is easy to hydrolyze after adding, and in the later stage, it may happen that the antiscalant is exhausted before the next feeding, resulting in scaling....

Claims

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Application Information

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IPC IPC(8): C02F5/12
CPCC02F5/125
Inventor 岳鹏高德超田民格杨庆军李爱兵
Owner SCI GREEN SHANDONG ENVIRONMENT TECH CO LTD
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