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Environment-friendly water treatment barium-strontium anti-scaling agent and preparation method thereof

A scale inhibitor and water treatment technology, applied in the field of environmental protection barium strontium scale inhibitor for water treatment and its preparation, can solve the problems of water pollution, poor slow release performance, poor thermal stability, etc., and achieve less usage and thermal stability. Good sex, long-lasting effect

Inactive Publication Date: 2015-11-11
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above technical problems, this application provides an environment-friendly barium strontium scale inhibitor for water treatment and its preparation method, which solves the technical problems of existing water treatment scale inhibitors such as high cost, pollution to water bodies, poor thermal stability, and poor slow-release performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add maleic anhydride and distilled water into a four-necked flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 55°C, stir for 25min, add acrylic acid and methyl acrylate dropwise, heat up to 80°C, and react 2h.

[0025] Add ethylenediamine, sodium tripolyphosphate, ammonium persulfate and hydroxyethylidene diphosphonic acid, heat up to 110°C, react for 1 hour, heat up to 140°C, add the remaining raw materials, stir for 80min, and get the environment-friendly barium strontium scale inhibitor .

[0026] The product disperses calcium carbonate and calcium phosphate microcrystals, even if scale is formed, it is relatively loose and easily washed away by water flow; it has excellent corrosion inhibition effect, non-toxic, and good thermal stability; the amount of scale inhibitor used is only 10mg / L, Save the cost of use; the effect is long-lasting, and the scale inhibition effect is 98% after being placed at 50°C for one mont...

Embodiment 2

[0029] Add maleic anhydride and distilled water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 75°C, stir for 45min, add acrylic acid and methyl acrylate dropwise, heat up to 100°C, and react 6h.

[0030] Add ethylenediamine, sodium tripolyphosphate, ammonium persulfate and hydroxyethylene diphosphonic acid, raise the temperature to 130°C, react for 3 hours, raise the temperature to 160°C, add the remaining raw materials, and stir for 100min to obtain the environment-friendly barium strontium scale inhibitor .

[0031] The product disperses calcium carbonate and calcium phosphate microcrystals, even if scale is formed, it is relatively loose and is easily washed away by water; it has excellent corrosion inhibition effect, non-toxic, and good thermal stability; the amount of scale inhibitor used is only 8mg / L, Save the cost of use; the effect is long-lasting, and the scale inhibition effect is 100% after bei...

Embodiment 3

[0034] Add maleic anhydride and distilled water into a four-necked flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 55°C, stir for 25min, add acrylic acid and methyl acrylate dropwise, heat up to 80°C, and react 2h.

[0035] Add ethylenediamine, sodium tripolyphosphate, ammonium persulfate and hydroxyethylidene diphosphonic acid, heat up to 110°C, react for 1 hour, heat up to 140°C, add the remaining raw materials, stir for 80min, and get the environment-friendly barium strontium scale inhibitor .

[0036]The product disperses calcium carbonate and calcium phosphate microcrystals, even if scale is formed, it is relatively loose and is easily washed away by water; it has excellent corrosion inhibition effect, non-toxic, and good thermal stability; the amount of scale inhibitor used is only 5mg / L, Save the cost of use; the effect is long-lasting, and the scale inhibition effect is 99% after being placed at 56°C for one month. I...

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PUM

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Abstract

The invention discloses an environment-friendly water treatment barium-strontium anti-scaling agent and a preparation method thereof. Acrylic acid, methyl acrylate, ammonium persulfate, amino trimethylene phosphonic acid, distilled water, ethylene diamine tetraacetic acid, unsaturated organic acid, sodium tripolyphosphate, maleic anhydride, hydroxyethylidene diphosphonic acid and a catalyst are weighed according to a weight ratio. According to the anti-scaling agent, calcium carbonate and calcium phosphate micro-crystals are dispersed; even if scales are generated, the scales are relatively loose and are easily washed away by flow; the anti-scaling agent is excellent in corrosion inhibition, non-toxic and high in thermal stability; the using amount of the anti-scaling agent is as small as 1 to 10mg / L, and the using cost is reduced; the effect is enduring, after the anti-scaling agent is placed for a month at the temperature of 50 to 60 DEG C, the anti-scaling effect is 98 to 100 percent, and the anti-scaling agent is mainly applied to a recycled sewage and oil delivery pipeline of an oil field and is used for preventing metal ions from scaling.

Description

technical field [0001] The application belongs to the technical field of ring reagents, and in particular relates to an environment-friendly barium strontium scale inhibitor for water treatment with good corrosion inhibition performance and a preparation method thereof. Background technique [0002] Scale inhibitor: It is a kind of agent 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 of metal equipment. The anti-corrosion and anti-scaling agent for cold-changing equipment is formulated with epoxy resin and specific amino resin as the base material, adding appropriate amount of various anti-rust, anti-corrosion and other additives, and is a single component. It has excellent shielding, anti-seepage, anti-rust properties, good scale resistance, thermal conductivity, excellent resistance to weak acids, strong alkalis, organic s...

Claims

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Application Information

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IPC IPC(8): C02F5/08C02F5/10C02F5/14
Inventor 金可心凌云凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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