Antiosmosis compound scale inhibitor and preparation method thereof

A compound antiscalant and reverse osmosis technology, which is applied in the field of reverse osmosis compound antiscalant and its preparation, can solve the problems of high cost of water treatment scale inhibitor, water pollution, poor thermal stability, etc., and achieve cost savings, The effect of using less amount and improving the anti-scaling performance

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] In view of the above technical problems, the present application provides a reverse osmosis composite antiscalant and its preparation method, which solves the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add hydrolyzed maleic anhydride and distilled water into a four-necked flask equipped with electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 60°C, stir for 30min, add polyacrylic acid and dodecyldimethylbenzyl dropwise ammonium chloride, heated to 85°C, and reacted for 3h.

[0024] Add ethylenediamine, polyamino polyether group methylene phosphonate, sulfonated styrene and hydroxyethylene diphosphonic acid, raise the temperature to 110°C, react for 2h, raise the temperature to 130°C, add the remaining raw materials, stir for 90min, Instantly.

[0025] The product controls large-scale fouling of calcium carbonate, calcium sulfate, barium sulfate, etc. on the reverse osmosis membrane, prolongs the service life of the membrane, and reduces the operating cost of the equipment; the synergistic effect of each component improves the antiscalant effect on the reverse osmosis concentrated water. Limited scale inhibition performance, suitable for vario...

Embodiment 2

[0028] Add hydrolyzed maleic anhydride and distilled water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 80°C, stir for 50min, add polyacrylic acid and dodecyldimethylbenzyl dropwise ammonium chloride, heated to 105°C, and reacted for 5h.

[0029] Add ethylenediamine, polyamino polyether group methylene phosphonate, sulfonated styrene and hydroxyethylene diphosphonic acid, raise the temperature to 130°C, react for 4h, raise the temperature to 150°C, add the remaining raw materials, stir for 110min, Instantly.

[0030] The product controls large-scale fouling of calcium carbonate, calcium sulfate, barium sulfate, etc. on the reverse osmosis membrane, prolongs the service life of the membrane, and reduces the operating cost of the equipment; the synergistic effect of each component improves the antiscalant effect on the reverse osmosis concentrated water. Limited scale inhibition performance, suitable for va...

Embodiment 3

[0033] Add hydrolyzed maleic anhydride and distilled water into a four-necked flask equipped with electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 60°C, stir for 30min, add polyacrylic acid and dodecyldimethylbenzyl dropwise ammonium chloride, heated to 85°C, and reacted for 3h.

[0034] Add ethylenediamine, polyamino polyether group methylene phosphonate, sulfonated styrene and hydroxyethylene diphosphonic acid, raise the temperature to 110°C, react for 2h, raise the temperature to 130°C, add the remaining raw materials, stir for 90min, Instantly.

[0035] The product controls large-scale fouling of calcium carbonate, calcium sulfate, barium sulfate, etc. on the reverse osmosis membrane, prolongs the service life of the membrane, and reduces the operating cost of the equipment; the synergistic effect of each component improves the antiscalant effect on the reverse osmosis concentrated water. Limited scale inhibition performance, suitable for vario...

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PUM

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Abstract

The invention discloses an antiosmosis compound scale inhibitor and a preparation method thereof. Polyacrylic acid, dodecyl dimethyl benzyl ammonium chloride, sulfonated styrene, methyl acrylate, distilled water, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, lignin, polyamino polyether methylene phosphonic acid salt, hydrolytic polymaleic anhydride, hydroxyethylidene diphosphonic acid and polyepoxysuccinic acid are weighed in parts by weight. The usage amount of the scale inhibitor is less and is only 2 to 8 mg/L; after the scale inhibitor is placed for one month at 50 to 60 DEG C, the scale inhibiting ratio is 96 to 100 percent.

Description

technical field [0001] The application belongs to the field of environmental protection reagent technology, and in particular relates to a reverse osmosis composite antiscalant with environmental protection and 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 alkali...

Claims

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Application Information

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IPC IPC(8): B01D65/08
Inventor 金可心凌云凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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