Environmentally-friendly scale and corrosion inhibitor and preparation method thereof

A scale and corrosion inhibitor, an environmentally friendly technology, applied in chemical instruments and methods, descaling and water softening, special treatment targets, etc. Inexpensive, environmentally friendly results

Pending Publication Date: 2018-12-21
CHANGZHOU KEWEI TIANSHI ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scale and corrosion inhibitor has better scale and corrosion inhibition performance, but imidazoline quaternary ammonium salt is a surfactant, which tends to generate more foam during actual use, so it cannot be used in the circulating water system of the air separation unit

Method used

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  • Environmentally-friendly scale and corrosion inhibitor and preparation method thereof
  • Environmentally-friendly scale and corrosion inhibitor and preparation method thereof
  • Environmentally-friendly scale and corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0027] Each component in the environment-friendly scale and corrosion inhibitor of this embodiment and its weight percentage relative to the total weight of the scale and corrosion inhibitor are: hydrolyzed polymaleic anhydride 10%, acrylic acid / 2-acrylamide-2 -Methylpropanesulfonic acid / N-tert-butylacrylamide terpolymer 18%, ammonium persulfate 0.5%, carboxyethylthiosuccinic acid 8%, sodium gluconate 8%, methylbenzotriazepam azole 1%, the balance is deionized water.

[0028] The preparation method of the environment-friendly scale and corrosion inhibitor of the present embodiment comprises the following steps:

[0029] ① Preparation of acrylic acid / 2-acrylamide-2-methylpropanesulfonic acid / N-tert-butylacrylamide terpolymer.

[0030] Put 50kg of 2-acrylamide-2-methylpropanesulfonic acid, 30kg of N-tert-butylacrylamide and 120kg of deionized water into the reactor in sequence, start stirring, and raise the temperature to 80°C-90°C (this example 85°C in the middle), after reac...

Embodiment 2）

[0035]Each component in the environment-friendly scale and corrosion inhibitor of this embodiment and its weight percentage relative to the total weight of the scale and corrosion inhibitor are: hydrolyzed polymaleic anhydride 15%, acrylic acid / 2-acrylamide-2 -Methylpropanesulfonic acid / N-tert-butylacrylamide terpolymer 14%, ammonium persulfate 0.75%, carboxyethylthiosuccinic acid 5%, sodium gluconate 5%, methylbenzotriazepam azole 2%, the balance is deionized water.

[0036] The preparation method of the environment-friendly scale and corrosion inhibitor of the present embodiment comprises the following steps:

[0037] ① Preparation of acrylic acid / 2-acrylamide-2-methylpropanesulfonic acid / N-tert-butylacrylamide terpolymer.

[0038] Put 30kg of 2-acrylamide-2-methylpropanesulfonic acid, 30kg of N-tert-butylacrylamide and 120kg of deionized water into the reaction kettle in sequence, start stirring, and raise the temperature to 80°C. The ammonium persulfate aqueous solution ...

Embodiment 3）

[0043] Each component in the environment-friendly scale and corrosion inhibitor of this embodiment and its weight percentage relative to the total weight of the scale and corrosion inhibitor are: hydrolyzed polymaleic anhydride 12.5%, acrylic acid / 2-acrylamide-2 -Methylpropanesulfonic acid / N-tert-butylacrylamide terpolymer 16%, ammonium persulfate 1%, carboxyethylthiosuccinate 7.5%, sodium gluconate 7%, methylbenzotriazepam azole 1.5%, and the balance is deionized water.

[0044] The preparation method of the environment-friendly scale and corrosion inhibitor of the present embodiment comprises the following steps:

[0045] ① Preparation of acrylic acid / 2-acrylamide-2-methylpropanesulfonic acid / N-tert-butylacrylamide terpolymer.

[0046] Put 40kg of 2-acrylamide-2-methylpropanesulfonic acid, 40kg of N-tert-butylacrylamide and 120kg of deionized water into the reaction kettle in sequence, start stirring, and raise the temperature to 80°C. The ammonium persulfate aqueous solut...

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Abstract

The invention discloses an environmentally-friendly scale and corrosion inhibitor and a preparation method thereof. The environmentally-friendly scale and corrosion inhibitor comprises the following ingredients in parts by weight relative to the total mass of scale and corrosion inhibitor: 10-15% of hydrolytic polymaleic anhydride, 14-20% of acrylic acid/2-acrylamide-2-methyl propanesulfonic acid/n-tert-butyl acrylamide terpolymer, 0.5-1% of ammonium persulfate, 5-10% of carboxyalkylthiosuccinic acid, 5-8% of sodium gluconate, 1-2% of methylbenzotriazole and the balance of deionized water. The scale and corrosion inhibitor has the advantages of no phosphorus or zinc, environment protection and excellent scale and corrosion inhibition effect.

Description

technical field [0001] The invention relates to an industrial water treatment agent, in particular to an environment-friendly scale and corrosion inhibitor for industrial circulating cooling water treatment and a preparation method thereof. Background technique [0002] At present, in the field of industrial circulating water treatment chemicals, phosphorus-containing formulations are still dominant. The technology of phosphorus-containing chemicals is mature, the cost is controllable, and the treatment effect basically meets the standards of the country or related industries. However, with the discharge of phosphorus-containing wastewater, in fact, on the one hand, the process of eutrophication of the water body is intensified, destroying the original ecosystem, and on the other hand, it also increases the difficulty of wastewater treatment and recycling. Over the years, with the gradual attention of the people and social groups to environmental protection and the enhanceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12
CPCC02F5/125C02F2303/08C02F2303/22
Inventor 管敏锋邓晓虎柳彩梅
Owner CHANGZHOU KEWEI TIANSHI ENVIRONMENTAL TECH
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