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Scale inhibitor for industrial cooling water system and preparation method thereof

A cooling water system and antiscalant technology, which is applied in chemical instruments and methods, natural water treatment, non-polluted water treatment, etc., can solve the problems of low scale inhibition rate, small tolerance and high phosphorus content of antiscalants. Achieve good dispersion, prevent scaling, and good water solubility

Inactive Publication Date: 2017-05-31
JIANGSU JINGWEI TECH INNOVATION CONSULTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention provides a scale inhibitor for industrial cooling water systems and a preparation method thereof, which solves the technical problems of low scale inhibition rate, high corrosion rate, low tolerance and high phosphorus content of existing scale inhibitors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The first step: weigh according to the ratio of parts by mass: 100 parts of ultrapure water; 45 parts of polyacrylic acid; 20 parts of acrylic acid binary copolymer; 0.05 part of benzotriazole; 1 part of hydrolyzed polymaleic acid; 0.1 part of phenol polyoxyethylene ether; 10 parts of hydroxyethylene diphosphonic acid; 2 parts of dodecyl dimethyl benzyl ammonium chloride; 10 parts of amino trimethylene phosphonic acid; 6 parts of methylphosphonic acid.

[0025] Step 2: Put benzotriazole, hydrolyzed polymaleic acid, ethanol and acrylic acid binary copolymer into a reaction kettle equipped with a thermometer, heating device and stirring device, raise the temperature to 40°C, stir for 50 minutes, and stir at a speed of 90 rev / min.

[0026] Step 3: heat up to 80°C, add polyamino polyether group methylene phosphonic acid and remaining raw materials, and stir for 1 hour.

[0027] Wide range of sources of raw materials, good water solubility, suitable for industrial water sy...

Embodiment 2

[0029] The first step: weigh according to the ratio of parts by mass: 100 parts of ultrapure water; 65 parts of polyacrylic acid; 40 parts of acrylic acid binary copolymer; 0.25 parts of benzotriazole; 5 parts of hydrolyzed polymaleic acid; 0.5 parts of phenol polyoxyethylene ether; 30 parts of hydroxyethylene diphosphonic acid; 6 parts of dodecyl dimethyl benzyl ammonium chloride; 15 parts of amino trimethylene phosphonic acid; 10 parts of methylphosphonic acid.

[0030] Step 2: Put benzotriazole, hydrolyzed polymaleic acid, ethanol and acrylic acid binary copolymer into a reaction kettle equipped with a thermometer, a heating device and a stirring device, raise the temperature to 60°C, stir for 90 minutes, and the stirring speed is 110 rev / min.

[0031] Step 3: heat up to 100°C, add polyamino polyether group methylene phosphonic acid and remaining raw materials, and stir for 5 hours.

[0032] Wide range of sources of raw materials, good water solubility, suitable for indus...

Embodiment 3

[0034]The first step: weighing according to the ratio of parts by mass: 100 parts of ultrapure water; 50 parts of polyacrylic acid; 25 parts of acrylic acid binary copolymer; 0.1 part of benzotriazole; 2 parts of hydrolyzed polymaleic acid; 0.2 parts of phenol polyoxyethylene ether; 15 parts of hydroxyethylene diphosphonic acid; 3 parts of dodecyl dimethyl benzyl ammonium chloride; 11 parts of amino trimethylene phosphonic acid; 7 parts of methylphosphonic acid.

[0035] Step 2: Put benzotriazole, hydrolyzed polymaleic acid, ethanol and acrylic acid binary copolymer into a reaction kettle equipped with a thermometer, heating device and stirring device, raise the temperature to 40°C, stir for 50 minutes, and stir at a speed of 90 rev / min.

[0036] Step 3: heat up to 80°C, add polyamino polyether group methylene phosphonic acid and remaining raw materials, and stir for 1 hour.

[0037] Wide range of sources of raw materials, good water solubility, suitable for industrial water...

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Abstract

A scale inhibitor for an industrial cooling water system contains raw materials of ultrapure water, polyacrylic acid, binary acylic copolymer, benzotriazole, hydrolyzed polymaleic acid, ethanol, phenol polyoxyethylene, hydroxyethylidene-1,1-diphosphonic acid, dodecyl dimethyl benzyl ammonium chloride, amino trimethylene phosphonic acid and polyamino polyether methylene phosphonate. The scale inhibitor for the industrial cooling water system is applicable to industrial water systems, boiler systems and central air conditioning systems; the phosphorus value in exterior drainage water is 0.05-0.25 mg / L; the scale inhibitor for the industrial cooling water system achieves very good complexing ability for metal ions in the water and effectively stops scaling; the crystal lattice sequence of sediments is effectively destroyed, the corrosion rate of carbon steel is 0.001-0.005 mu m / a<-1>, the adhesive speed is 1.5-3 mcm and the scale inhibiting ratio of calcium carbonate is 99.5-99.9%, the dispersion effect is good and a very good inhibiting and eliminating effect on the sediments in the water is achieved.

Description

technical field [0001] The invention relates to an environment-friendly material, in particular to a scale inhibitor for an industrial cooling water system and a preparation method thereof. Background technique [0002] Scale inhibitor: It is a class of agents that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects on metal equipment . [0003] From the perspective of the mechanism of action, the role of scale inhibitors can be divided into three parts: chelation, dispersion and lattice distortion. And in the laboratory evaluation test, the dispersion effect is the remedial measure of the chelation effect, and the lattice distortion effect is the remedial measure of the dispersion effect. [0004] The cold water flows through the production equipment that needs to be cooled, called heat exchange equipment, such as heat exchangers, co...

Claims

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Application Information

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IPC IPC(8): C02F5/10C02F5/14C02F103/02
CPCC02F5/10C02F5/14C02F2103/023C02F2303/22
Inventor 王静
Owner JIANGSU JINGWEI TECH INNOVATION CONSULTING CO LTD
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