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Corrosion and scale inhibitor for organic-alcohol cold carrying system and preparation method thereof

A technology of corrosion and scale inhibitors and organic alcohols, which is applied in the field of corrosion and scale inhibitors of organic alcohol cooling systems and its preparation, can solve problems such as red tide environment, pollution, unsolved problems of corrosion and scale inhibition, and achieve Corrosion inhibition, environmental friendliness, and the effect of inhibiting the growth of bacteria

Inactive Publication Date: 2017-12-26
CHAOYANG GUANGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The corrosion inhibitor belongs to an organic phosphoric acid type corrosion and scale inhibitor, and it also involves the treatment of the scale inhibitor in the later stage. If it is discharged directly, it will cause eutrophication of the surrounding waters and cause environmental pollution such as "red tide"
In addition, the scale inhibitors disclosed in the above two patents are only suitable for ethylene glycol systems, and do not solve the corrosion and scale inhibition problems of other organic alcohol systems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A corrosion and scale inhibitor for organic alcohol cooling systems, the chemical composition according to weight percentage is: 10.0% sodium molybdate, 15.0% sodium gluconate, 7.0% sodium citrate, 4.0% sodium hydroxide, poly Ethylene glycol 1.3%, polyepoxysuccinic acid 4.5%, lauryl dimethyl benzyl ammonium chloride 4.0%, sodium lactate 1.5%, and the balance is deionized water.

[0020] The preparation method of the corrosion and scale inhibitor of the present embodiment comprises the following steps:

[0021] (1) According to the above mass ratio ingredients, first add 5 / 6 total deionized water quality deionized water in the reaction bottle, then add sodium molybdate, sodium gluconate, sodium citrate, sodium hydroxide to the reaction bottle one by one In the bottle, regardless of the order of addition, after the former component is completely dissolved, add the latter component to obtain solution 1;

[0022] (2) Add another half of the mass of deionized water in anoth...

Embodiment 2

[0026] A corrosion and scale inhibitor for organic alcohol cooling systems, the chemical composition according to weight percentage is: 16.0% sodium molybdate, 10.0% sodium gluconate, 9.0% sodium citrate, 3.1% sodium hydroxide, poly Ethylene glycol 1.9%, polyepoxysuccinic acid 3.0%, lauryl dimethyl benzyl ammonium chloride 3.0%, sodium lactate 2.0%, and the balance is deionized water.

[0027] The preparation method of the corrosion and scale inhibitor of the present embodiment comprises the following steps:

[0028] (1) According to the above mass ratio ingredients, first add 5 / 6 total deionized water quality deionized water in the reaction bottle, then add sodium molybdate, sodium gluconate, sodium citrate, sodium hydroxide to the reaction bottle one by one In the bottle, regardless of the order of addition, after the former component is completely dissolved, add the latter component to obtain solution 1;

[0029] (2) Add another half of the mass of deionized water in anoth...

Embodiment 3

[0033]A corrosion and scale inhibitor for organic alcohol cooling system, the chemical composition according to weight percentage is: 13.0% sodium molybdate, 16.0% sodium gluconate, 5.0% sodium citrate, 4.7% sodium hydroxide, poly Ethylene glycol 1.6%, polyepoxysuccinic acid 5.1%, lauryl dimethyl benzyl ammonium chloride 5.0%, sodium lactate 1.3%, and the balance is deionized water.

[0034] The preparation method of the corrosion and scale inhibitor of the present embodiment comprises the following steps:

[0035] (1) According to the above mass ratio ingredients, first add 5 / 6 total deionized water quality deionized water in the reaction bottle, then add sodium molybdate, sodium gluconate, sodium citrate, sodium hydroxide to the reaction bottle one by one In the bottle, regardless of the order of addition, after the former component is completely dissolved, add the latter component to obtain solution 1;

[0036] (2) Add another half of the mass of deionized water in another...

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Abstract

The invention provides a corrosion and scale inhibitor for an organic-alcohol cold carrying system and a preparation method thereof. The corrosion and scale inhibitor comprises the chemical components in percent by weight: 6.6%-19.0% of sodium molybdate, 6.6%-19.0% of sodium gluconate, 3.3%-9.5% of sodium citrate, 2.0%-4.8% of sodium hydroxide, 0.8%-2.4% of polyethylene glycol, 2.5%-6.0% of polyepoxysuccinic acid, 2.5-6.0% of dodecyl dimethyl benzyl ammonium chloride, 1.3-2.4% of sodium lactate and the balance of deionized water. The preparation method comprises the following steps: according to the mass ratio, firstly dissolving the sodium molybdate, the sodium gluconate, the sodium citrate and the sodium hydroxide in the deionized water completely to obtain a solution I; dissolving the polyethylene glycol, the polyepoxysuccinic acid, the dodecyl dimethyl benzyl ammonium chloride and the sodium lactate in the deionized water completely to obtain a solution II; and uniformly mixing the solution I and the solution II to obtain the organic-alcohol cold carrying system.

Description

technical field [0001] The invention relates to a corrosion and scale inhibitor, in particular to a corrosion and scale inhibitor for organic alcohol cooling systems and a preparation method thereof. Background technique [0002] At present, indirect cooling technology is widely used in the fields of brine ice making, central air conditioning and industrial cooling. In a refrigeration device using this technology, the substance that transfers the heat of the cooled object to the evaporating refrigerant is called a refrigerant. Commonly used refrigerants include water, brine, and organic alcohols. In the field of low-temperature refrigeration and heat pumps, aqueous solutions of organic alcohols are often used as refrigerants. The refrigerant of the organic alcohol aqueous solution will be oxidized by the oxygen in the air to form acid substances during long-term operation, which will seriously corrode the metal; in addition, the organic alcohol aqueous solution contains ca...

Claims

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Application Information

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IPC IPC(8): C02F5/12C23F11/08F25B45/00F25B47/00
CPCC02F5/125C02F2303/04C02F2303/08C02F2305/04C23F11/08F25B45/00F25B47/003
Inventor 苏超宋喆
Owner CHAOYANG GUANGDA CHEM
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