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Low-phosphorus scale-inhibiting dispersing agent

A scale inhibitor and dispersant technology, applied in the field of water treatment, can solve the problems of natural water pollution, large dosage of chemicals, scaling, etc., and achieve the effect of wide application range and small dosage of chemicals

Inactive Publication Date: 2018-05-29
新疆水处理工程技术研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the rapid development of my country's petroleum, chemical and steel industries, industrial water consumption is increasing. With the increase of the concentration ratio of industrial circulating water, the concentration of various ions in the water will increase greatly with the concentration, which will easily cause corrosion and corrosion of equipment. Scaling affects the perforation and heat conduction of equipment, and even causes production accidents
[0003] In order to solve the problem of equipment corrosion and scaling, the circulating cooling water usually adopts the method of adding scale inhibitors and dispersants. Most of the scale inhibitors and dispersants in the domestic market are inorganic phosphorus or organic phosphorus corrosion inhibitors with high phosphorus content. , the pollution of natural water bodies is relatively serious, which will cause eutrophication of water bodies, promote the excessive reproduction of microorganisms, especially algae, and the rate of organic matter production far exceeds the rate of consumption, destroying the ecological balance of water bodies; The amount of dosing is large, and the efficiency of scale inhibition and dispersion is limited. Therefore, low-phosphorus and high-efficiency scale inhibition and dispersants have become the development direction of water treatment chemicals

Method used

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  • Low-phosphorus scale-inhibiting dispersing agent

Examples

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Embodiment 1

[0023] A low-phosphorus antiscaling and dispersing agent, comprising the following components by weight percentage: carboxylate-sulfonate-N-tert-butylacrylamide terpolymer 15%, 2-phosphonic acid butane-1, 2,4-tricarboxylic acid 15%, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer 15%, carboxylic acid-sulfonic acid-acrylate terpolymer 15%, zinc sulfate heptahydrate 12% and the remainder of deionized water.

[0024] A method for preparing a low-phosphorus scale-inhibiting dispersant, the method steps are as follows: Weigh each component and add it to a stirrer in turn, stir for 1 hour at normal temperature and pressure at a stirring speed of 100 rpm.

Embodiment 2

[0026] A low-phosphorus antiscaling and dispersing agent, comprising the following components by weight percentage: carboxylate-sulfonate-N-tert-butylacrylamide terpolymer 25%, 2-phosphonic acid butane-1, 10% of 2,4-tricarboxylic acid, 15% of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, 10% of carboxylic acid-sulfonic acid-acrylate terpolymer, 12% of zinc sulfate heptahydrate and the remainder of deionized water.

[0027] A method for preparing a low-phosphorus scale-inhibiting dispersant, the steps of which are as follows: Weigh each component and put them into a stirrer in turn, and stir for 2 hours at normal temperature and pressure at a stirring speed of 60rpm.

Embodiment 3

[0029] A low-phosphorus anti-scaling dispersant, comprising the following components by weight percentage: carboxylate-sulfonate-N-tert-butylacrylamide terpolymer 20%, 2-phosphonic acid butane-1, 2,4-tricarboxylic acid 10%, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer 20%, carboxylic acid-sulfonic acid-acrylate terpolymer 13%, zinc sulfate heptahydrate 10% and the remainder of deionized water.

[0030] A preparation method of a low-phosphorus scale-inhibiting dispersant, the method steps are as follows: Weigh each component and add it to a stirrer in turn, and stir for 1.5 hours at normal temperature and pressure at a stirring speed of 80rpm.

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Abstract

The invention relates to a low-phosphorus scale-inhibiting dispersing agent. The low-phosphorus scale-inhibiting dispersing agent comprises the following components in percent by weight: 40-60% of polycarboxylic dispersing agents, 10-15% of a scale inhibitor, 8-12% of zinc salt and the balance of deionized water. Through compounding of the three polycarboxylic dispersing agents and the scale inhibitor, the low-phosphorus scale-inhibiting dispersing agent provided by the invention can effectively control corrosion of equipment and pipelines and deposition of CaCO3 and CaSO4 deposits under a relatively wide water quality condition; the low-phosphorus scale-inhibiting dispersing agent provided by the invention is a low-phosphorus high-efficiency product, so that compared with the conventionalscale-inhibiting dispersing agent, the low-phosphorus scale-inhibiting dispersing agent provided by the invention has the characteristics of a small dosage and a wide application range. Experiments prove that the low-phosphorus scale-inhibiting dispersing agent provided by the invention has the scale-inhibiting rate of 96% or above, and has the corrosion rate significantly lower than that of a contrast; in addition, after the low-phosphorus scale-inhibiting dispersing agent is used for water treatment, the total phosphorus content of water is 0.29-0.43mg / L.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a low phosphorus scale inhibitor dispersant. Background technique [0002] With the rapid development of my country's petroleum, chemical and steel industries, industrial water consumption is increasing. With the increase of the concentration ratio of industrial circulating water, the concentration of various ions in the water will increase greatly with the concentration, which will easily cause corrosion and corrosion of equipment. Scaling will affect the perforation and heat conduction of equipment, and even cause production accidents. [0003] In order to solve the problem of equipment corrosion and scaling, the circulating cooling water usually adopts the method of adding scale inhibitors and dispersants. Most of the scale inhibitors and dispersants in the domestic market are inorganic phosphorus or organic phosphorus corrosion inhibitors with high phosphor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
CPCC02F5/145
Inventor 徐进峰曾凡付王刚
Owner 新疆水处理工程技术研究中心有限公司