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Quaternary non-phosphorus aggregate type corrosion and scale inhibitor PIAAM and preparation method thereof

A corrosion and scale inhibitor, a polymerization type technology, applied in the chemical field, can solve the problems of maleic anhydride being difficult to biodegrade, environmental pollution, etc., and achieve good economic and social benefits, good environmental benefits, and the effect of inhibiting corrosion.

Inactive Publication Date: 2014-11-05
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of industrial water treatment, polycarboxylic acid water treatment agents mostly use maleic anhydride as a raw material monomer, but maleic anhydride is not easy to biodegrade, and long-term accumulation will cause environmental pollution

Method used

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  • Quaternary non-phosphorus aggregate type corrosion and scale inhibitor PIAAM and preparation method thereof
  • Quaternary non-phosphorus aggregate type corrosion and scale inhibitor PIAAM and preparation method thereof
  • Quaternary non-phosphorus aggregate type corrosion and scale inhibitor PIAAM and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 10kg of acrylic acid and 2kg of methyl methacrylate were mixed and dissolved to obtain a solution (I). 2 kg of 2-acrylamide-2-methylpropanesulfonic acid, 2 kg of sodium persulfate and 30 kg of water were mixed to obtain a solution (II). Under the condition of heating and stirring, slowly add 8kg of itaconic acid and 2kg of isopropanol to the reaction kettle filled with 70kg of water, and mix and dissolve; Add solutions (I) and (II), control the feeding speed, and complete feeding within 1h. React at constant temperature for 2-6 hours, and cool to room temperature to obtain a light yellow transparent liquid, which is the product PIAAM of the present invention.

Embodiment 2

[0017] Stir and mix 30kg of acrylic acid and 10kg of methyl methacrylate to obtain solution (I); in addition, mix and stir 10kg of 2-acrylamide-2-methylpropanesulfonic acid, 6kg of sodium persulfate and 50kg of water to obtain solution (II) ; Under heating and stirring conditions, get 100kg of water and place in the reactor, slowly add 8kg itaconic acid, 8kg isopropanol successively, mix and dissolve; operate according to the method and steps of the above-mentioned embodiment 1.

Embodiment 3

[0019] Stir and mix 20kg of acrylic acid and 4kg of methyl methacrylate to obtain solution (I); in addition, mix and stir 5kg of 2-acrylamide-2-methylpropanesulfonic acid, 3kg of sodium persulfate and 30kg of water to prepare solution (II) ); under heating and stirring conditions, get 80kg of water and place in the reactor, slowly add 8kg of itaconic acid, 5kg of isopropanol successively, mix and dissolve; operate according to the method and steps of the above-mentioned embodiment 1.

[0020] Specific comparison method

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Abstract

The invention discloses a quaternary non-phosphorus aggregate type corrosion and scale inhibitor PIAAM and a preparation method thereof. The corrosion and scale inhibitor PIAAM is composed of itaconic acid, acrylic acid, 2-acrylamide-2-methyl propanesulfonic acid and methyl methacrylate, sodium persulphate, isopropyl alcohol and water. The corrosion and scale inhibitor PIAAM contains no phosphorous element, meets environmental protection requirement, is excellent in scale inhibition performance, has good iron oxide dispersity and also has the characteristics of corrosion inhibition, high temperature resistance, high alkali resistance and stable molecular structure, and discharge of 'waste water, waste gas and waste residue' is not caused in the whole preparation process. The quaternary non-phosphorus aggregate type corrosion and scale inhibitor product PIAAM is simple in process when being used for treating circulating cooling water, dosage is low, cost is low, and effect is good, so that the quaternary non-phosphorus aggregate type corrosion and scale inhibitor PIAAM has better economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the field of chemical industry, and specifically relates to a quaternary phosphorus-free polymeric corrosion and scale inhibitor PIAAM used in industrial circulating cooling water systems and a preparation method thereof. Background technique [0002] Polymer corrosion and scale inhibitors are a new class of pollution-free industrial water treatment agents developed in the 1980s. In polymer corrosion and scale inhibitors, carboxyl and phosphono groups are active groups for inhibiting calcium carbonate scale; carboxyl and polyoxyethylene groups are active groups for inhibiting calcium phosphate scale; ester groups, hydroxyl groups, sulfonic acid groups, amides The phosphonocarboxylic acid group is an active group that prevents polymer aggregation; the phosphonocarboxylic acid chelates with metal ions and is adsorbed on the metal surface to inhibit corrosion; the phosphonocarboxylic acid is not easily hydrolyzed and has scale inh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/06
Inventor 王平王水良
Owner NANJING FORESTRY UNIV
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