Antisludging agent for low-phosphorous reverse osmosis membrane and preparation method of antisludging agent

A technology of reverse osmosis membrane and scale inhibitor, applied in the field of low phosphorus reverse osmosis membrane scale inhibitor and its preparation, can solve the problems of poor scale inhibition stability, poor corrosion inhibition effect, poor temperature resistance, etc. Low dosage and long shelf life

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, the present application provides a low-phosphorus reverse osmosis membrane scale inhibitor and its preparation method to solve the technical problems of existing water treatment scale inhibitors such as high cost, poor temperature resistance, poor scale inhibition stability and poor corrosion inhibition effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add tolyltriazole and deionized water into a four-necked flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 30°C, stir for 20min, add dropwise 2-butane phosphonate- 1,2,4-tricarboxylic acid and polyepoxysuccinic acid were heated to 40°C and reacted for 1 hour.

[0025] Add ethylenediamine, benzotriazole, sodium polyacrylate and ferrous sulfate, raise the temperature to 70°C, react for 0.5h, raise the temperature to 100°C, add the remaining raw materials, and stir for 70min to obtain the low phosphorus reverse osmosis membrane scale inhibitor.

[0026] Used in a wide pH range of feed water, it can effectively control calcium carbonate, calcium sulfate, barium sulfate, silicon dioxide and other deposited scales, and the corrosion inhibition rate is 0.01mm / a; compared with conventional phosphorus-containing scale inhibitors and dispersants , reduce the hidden dangers of biological pollution and bacteria exceeding the standar...

Embodiment 2

[0029] Add tolyltriazole and deionized water into a four-necked flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 50°C, stir for 40min, and dropwise add 2-butane phosphonate- 1,2,4-Tricarboxylic acid and polyepoxysuccinic acid were heated to 60°C and reacted for 1.5 hours.

[0030] Add ethylenediamine, benzotriazole, sodium polyacrylate and ferrous sulfate, raise the temperature to 90°C, react for 1 hour, raise the temperature to 120°C, add the remaining raw materials, and stir for 90 minutes to obtain the low phosphorus reverse osmosis membrane scale inhibitor.

[0031] Used in a wide pH range of feed water, it can effectively control calcium carbonate, calcium sulfate, barium sulfate, silicon dioxide and other deposited scales, with a corrosion inhibition rate of 0.008mm / a; compared with conventional phosphorus-containing scale inhibitors and dispersants , reduce the hidden dangers of biological pollution and bacteria exceedi...

Embodiment 3

[0034] Add tolyltriazole and deionized water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 30°C, stir for 20min, add 2-butane phosphonate- 1,2,4-tricarboxylic acid and polyepoxysuccinic acid were heated to 40°C and reacted for 1 hour.

[0035] Add ethylenediamine, benzotriazole, sodium polyacrylate and ferrous sulfate, raise the temperature to 70°C, react for 0.5h, raise the temperature to 100°C, add the remaining raw materials, and stir for 70min to obtain the low phosphorus reverse osmosis membrane scale inhibitor.

[0036] Used in a wide pH range of feed water, it can effectively control calcium carbonate, calcium sulfate, barium sulfate, silicon dioxide and other deposited scales, with a corrosion inhibition rate of 0.005mm / a; compared with conventional phosphorus-containing scale inhibitors and dispersants , reduce the hidden dangers of biological pollution and bacteria exceeding the standard in the me...

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PUM

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Abstract

The application discloses an antisludging agent for a low-phosphorous reverse osmosis membrane and a preparation method of the antisludging agent, which takes the following components according to matching parts by weight: 2-phosphonobutane-1,2,4-tricarboxylic acid, polyepoxysuccinicacid, sodium polyacrylate, oxyhydrogen sodium, deionized water, mercapto-benzothiazole, polymerization inhibitor, benzotriazole, methyl-benzotriazole, ferrous sulfate and dispersing agent. The corrosion inhibition velocity is 0.001 to 0.01 mm/a; the sludge inhibiting ratio reaches 98 to 100 percent; the guarantee period is long; the sludge inhibiting effect is 99 to 100 percent after being placed under the temperature of 60 to 70 DEG C for a month.

Description

technical field [0001] The application belongs to the technical field of ring reagents, and in particular relates to a low-phosphorus reverse osmosis membrane scale inhibitor 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, impermeability, 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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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/08
Inventor 金可心凌云凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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