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Phosphorus-free scale and corrosion inhibitor, and preparation technology thereof

A non-phosphorus scale and corrosion inhibitor technology, applied in the direction of scale removal and water softening, special treatment targets, water/sludge/sewage treatment, etc., can solve the problem of destroying the ecological balance of water bodies, and achieve internal stress increase, The effect of less usage and simple process

Inactive Publication Date: 2017-09-29
太仓市格雷得五金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing scale and corrosion inhibitors for industrial circulating water are still based on phosphorus-containing formulas, but the use of phosphorus-containing compounds leads to eutrophication of water quality, promotes the excessive reproduction of microorganisms, especially algae, and the rate of organic matter production far exceeds consumption Speed, accumulation of organic matter in the water body, destroying the ecological balance of the water body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A phosphorus-free scale and corrosion inhibitor, comprising the following raw material components in parts by weight: 10 parts of hydroxyethylidene diphosphonic acid, 5 parts of polycarboxylic acid, 10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5 parts of ammonium sulfate, 3 parts of zinc chloride, 10 parts of sodium hydroxide, 10 parts of acrylic acid-hydroxypropyl acrylate copolymer, 3 parts of mercaptobenzothiazole, 5 parts of sodium polyepoxysuccinate, 3 parts of sodium gluconate, 5 parts of polyepoxysuccinic acid, 3 parts of methyl benzotriazole, 12 parts of cyclohexylamine, 5 parts of amino trimethylene phosphonic acid, 15 parts of activated carbon.

[0028] The activated carbon is activated carbon modified with thiourea.

[0029] Described polyepoxysuccinic acid preparation method is as follows:

[0030] (1) Prepare sodium hydroxide solution with deionized water, and raise the temperature of the water bath to 60°C;

[0031] (2) After the temperature of...

Embodiment 2

[0045] A phosphorus-free scale and corrosion inhibitor, comprising the following raw material components in parts by weight: 20 parts of hydroxyethylidene diphosphonic acid, 15 parts of polycarboxylic acid, 30 parts of 2-acrylamide-2-methylpropanesulfonic acid, 15 parts of ammonium sulfate, 5 parts of zinc chloride, 20 parts of sodium hydroxide, 15 parts of acrylic acid-hydroxypropyl acrylate copolymer, 9 parts of mercaptobenzothiazole, 10 parts of sodium polyepoxysuccinate, 9 parts of sodium gluconate, 10 parts of polyepoxysuccinic acid, 5 parts of methyl benzotriazole, 14 parts of cyclohexylamine, 10 parts of amino trimethylene phosphonic acid, 25 parts of activated carbon.

[0046] The activated carbon is activated carbon modified with thiourea.

[0047] Described polyepoxysuccinic acid preparation method is as follows:

[0048] (1) Prepare sodium hydroxide solution with deionized water, and raise the temperature of the water bath to 70°C;

[0049](2) After the temperatur...

Embodiment 3

[0063] A phosphorus-free scale and corrosion inhibitor, comprising the following raw material components in parts by weight: 15 parts of hydroxyethylidene diphosphonic acid, 10 parts of polycarboxylic acid, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 10 parts of ammonium sulfate, 4 parts of zinc chloride, 15 parts of sodium hydroxide, 12 parts of acrylic acid-hydroxypropyl acrylate copolymer, 6 parts of mercaptobenzothiazole, 8 parts of sodium polyepoxysuccinate, 6 parts of sodium gluconate, 8 parts of polyepoxysuccinic acid, 4 parts of methyl benzotriazole, 13 parts of cyclohexylamine, 8 parts of amino trimethylene phosphonic acid, 20 parts of activated carbon.

[0064] The activated carbon is activated carbon modified with thiourea.

[0065] Described polyepoxysuccinic acid preparation method is as follows:

[0066] (1) Prepare sodium hydroxide solution with deionized water, and raise the temperature of the water bath to 65°C;

[0067] (2) After the temperature ...

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Abstract

The invention belongs to the technical field of sewage treatment, and especially relates to a phosphorus-free scale and corrosion inhibitor, and a preparation technology thereof. The preparation technology of the phosphorus-free scale and corrosion inhibitor has the advantages of simplicity, no generation of toxic substances, environmental protection and low cost; and the molecular chain of the prepared scale and corrosion inhibitor contains rich ether groups, carboxylate radicals and other active groups, the phosphorus-free scale and corrosion inhibitor and scale forming cations form a stable structure in order to reach the high-efficiency scale and corrosion inhibition purpose, the corrosion inhibitor has the advantages of phosphorus-free, nontoxic, green and environmentally-friendly components, good biodegradability and small use amount, can form an adsorption film on the surface of metal in order to realize the corrosion inhibition effect, has good chelating and dispersing effects on calcium salts in water, and has a distortion effect on crystals to increase the internal stress of the crystals in order to make the crystals easily ruptured.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a phosphorus-free scale and corrosion inhibitor and a preparation process thereof. Background technique [0002] Industrial circulating cooling water accounts for 60%-80% of the total industrial water consumption. Therefore, saving the amount of circulating cooling water, improving water utilization and reducing water discharge are the key links for water conservation. At present, most industrial circulating cooling water is an open system. As the water in the cooling tower is recycled and evaporated, the mineral concentration will gradually increase, which will aggravate the scaling and corrosion of the equipment. The easiest way to reduce corrosion and scaling is to use scale and corrosion inhibitors. [0003] Existing scale and corrosion inhibitors for industrial circulating water are still based on phosphorus-containing formulas, but the use of phosphoru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14C02F5/10C08F122/06C08F8/08C23F11/08
CPCC02F5/105C02F5/145C02F2303/08C08F8/08C08F122/06C23F11/08
Inventor 黄晓雷
Owner 太仓市格雷得五金有限公司
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