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Scale inhibition dispersion agent for circulation cooling water

A technology of scale inhibitor and dispersant and circulating cooling water, applied in the field of scale inhibitor and dispersant, it can solve the problems of inability to meet the technical requirements of zero discharge, narrow water quality adaptation range, large compound dosage, etc., and achieve good scale inhibition and dispersion effect. , Wide range of uses, high scale inhibition and dispersion rate

Inactive Publication Date: 2018-11-23
芜湖市颂晖商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic water treatment manufacturers and the "Industrial Circulating Cooling Water Treatment Design Regulations" require cooling water treatment parameters: calcium hardness (in terms of CaCO 3 In terms of) + methyl orange alkalinity (as CaCO 3 Total) ≤ 1100mg / L, but this index is far from meeting the technical requirements of zero emission, which brings great pressure to the follow-up treatment
In addition, the currently used antiscalant and dispersant products have a high concentration, a large amount of compounding, and a narrow range of adaptation to water quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An antiscaling and dispersing agent for circulating cooling water, calculated in parts by weight, comprising the following components:

[0022] 20 parts of acrylic acid-acrylate-sulfonate copolymer, 25 parts of polyaspartic acid derivatives, 4 parts of sodium salicylate, 10 parts of polycarboxylic acid compounds, 4 parts of zinc chloride, and 50 parts of water. The polycarboxylic acid compound is a mixture of polyitaconic acid and polyepoxysuccinic acid, and the mass ratio of polyitaconic acid and polyepoxysuccinic acid is 3:1.

[0023] The preparation method of polyaspartic acid derivative comprises the following steps:

[0024] Put polysuccinyl in water and ultrasonically vibrate to form a suspension, raise the temperature of the water bath to 42°C, then add the aqueous solution of sodium lignosulfonate and sodium aspartate dropwise to the suspension, and adjust the pH to 8 with ammonia water, React for 8 hours; wash the reaction product with ethanol, and then dry it...

Embodiment 2

[0026] An antiscaling and dispersing agent for circulating cooling water, calculated in parts by weight, comprising the following components:

[0027] 15 parts of acrylic acid-acrylate-sulfonate copolymer, 30 parts of polyaspartic acid derivative, 8 parts of sodium salicylate, 8 parts of polycarboxylic acid compound, 8 parts of zinc chloride, and 60 parts of water. The polycarboxylic acid compound is a mixture of polyitaconic acid and polyepoxysuccinic acid, and the mass ratio of polyitaconic acid and polyepoxysuccinic acid is 2:1.

[0028] The preparation method of polyaspartic acid derivative comprises the following steps:

[0029] Put polysuccinyl in water and ultrasonically vibrate to form a suspension, raise the temperature of the water bath to 45°C, then add the aqueous solution of sodium lignosulfonate and sodium aspartate dropwise to the suspension, and adjust the pH to 9 with ammonia water, React for 10 hours; wash the reaction product with ethanol, and then dry it t...

Embodiment 3

[0031] An antiscaling and dispersing agent for circulating cooling water, calculated in parts by weight, comprising the following components:

[0032] 25 parts of acrylic acid-acrylate-sulfonate copolymer, 20 parts of polyaspartic acid derivatives, 6 parts of sodium salicylate, 12 parts of polycarboxylic acid compounds, 8 parts of zinc chloride, and 40 parts of water. The polycarboxylic acid compound is a mixture of polyitaconic acid and polyepoxysuccinic acid, and the mass ratio of polyitaconic acid and polyepoxysuccinic acid is 1:1.

[0033] The preparation method of polyaspartic acid derivative comprises the following steps:

[0034] Put polysuccinyl in water and ultrasonically vibrate to form a suspension, raise the temperature of the water bath to 40°C, then add an aqueous solution of sodium lignosulfonate and sodium aspartate dropwise to the suspension, and adjust the pH to 10 with ammonia water. React for 12 hours; wash the reaction product with ethanol, and then dry i...

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PUM

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Abstract

The invention provides a scale inhibition dispersion agent for circulation cooling water. The scale inhibition dispersion agent for circulation cooling water is prepared from the following ingredientsin parts by weight: 15 to 30 parts of acrylic acid-acrylate-sulfonate copolymer, 15 to 30 parts of polyaspartic acid derivatives, 4 to 8 parts of sodium salicylate, 8 to 12 parts of polycarboxylic acid compounds, 4 to 8 parts of zinc chloride and 40 to 60 parts of water. The polyaspartic acid derivatives are mainly prepared from polysuccinimide, sodium lignin sulfonate and sodium aspartate. The scale inhibition dispersion agent for circulation cooling water has the advantages that the scale inhibition dispersion rate is high; the application range is wide; the environmental-friendly effect isgood.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a scale inhibitor and dispersant for circulating cooling water. Background technique [0002] During the use of cooling water, with the continuous circulation and concentration, the content of minerals in the water will continue to increase, which aggravates the scaling problem of equipment. In addition, due to the shortage of water resources and the demand for environmental protection, many power plants and chemical plants have begun to implement zero discharge. The general process of zero discharge is to perform membrane re-concentration treatment on the concentrated brine discharged from the circulating water, and the salt brine discharged from the membrane concentration is usually sent to Go to the evaporation pond for natural evaporation and crystallization, or send it to the crystallizer, and the crystallization will be dried to form a solid, which will be transport...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/12C02F103/02
CPCC02F5/105C02F5/125C02F2103/023C02F2303/08
Inventor 汪泽维汪鹏
Owner 芜湖市颂晖商贸有限公司
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