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Preparation of a new environmentally friendly and efficient water quality stabilizer rg-9

A water quality stabilizer, RG-9 technology, applied in the field of polymers, can solve the problems of single function of polycarboxylic acid, increase of phosphorus content, eutrophication of water body and other problems, achieve inhibition of side reactions, low cost, easy transportation and storage Effect

Active Publication Date: 2020-10-16
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyphosphate has the disadvantages of being easy to hydrolyze and generate calcium phosphate, and the function of polycarboxylic acid is relatively single
[0007] The fourth stage: In the late 1970s, in view of the shortcomings of polyphosphate and polycarboxylic acid, organic phosphonate scale inhibitors were developed, which have excellent scale inhibition performance, but the resulting phosphorus in the circulating cooling water drainage The content increases, causing eutrophication hazards to the water body

Method used

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  • Preparation of a new environmentally friendly and efficient water quality stabilizer rg-9
  • Preparation of a new environmentally friendly and efficient water quality stabilizer rg-9
  • Preparation of a new environmentally friendly and efficient water quality stabilizer rg-9

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 29g of fatty alcohol polyoxyethylene ether (AEO-9) and 5.4g of maleic anhydride (MA) into a round-bottomed flask equipped with a stirrer, control the temperature at 74°C, and obtain the monomer MA- AEO-9; 5.9g maleic anhydride (MA), 0.1g catalyst ammonium ferric sulfate, 6.9g monomer MA-AEO-9 and 37mL distilled water were added to a three-necked flask equipped with a stirrer, and the temperature was raised to 95°C. 5.2 g of hydrogen peroxide solution (H 2 o 2 content is 30%), then stop the reaction after constant temperature for 2h to obtain the water quality stabilizer RG-9 with a solid content of 25%.

Embodiment 2

[0033] Add 29g fatty alcohol polyoxyethylene ether (AEO-9) and 5.4g maleic anhydride (MA) respectively in the round bottom flask, control temperature to be 74 ℃, obtain monomer MA-AEO-9 after constant temperature reaction 4.0h; Add 5.9g maleic anhydride (MA), 0.1g catalyst ferric ammonium sulfate, 6.9g monomer MA-AEO-9 and 37mL distilled water to a three-necked flask equipped with a stirrer, raise the temperature to 85°C, and drop it within 1.5h 5.2g hydrogen peroxide solution (H 2 o 2 content is 30%), constant temperature reaction 2h to obtain the final product water quality stabilizer RG-9.

Embodiment 3

[0035] Add 29g fatty alcohol polyoxyethylene ether (AEO-9) and 5.4g maleic anhydride (MA) respectively in the round bottom flask, control temperature to be 70 ℃, obtain monomer MA-AEO-9 after constant temperature reaction 4.5h; Add 7.8g of maleic anhydride (MA), 0.12g of catalyst ammonium ferric sulfate, 6.2g of monomer MA-AEO-9 and 42mL of distilled water into a three-necked flask equipped with a stirrer, raise the temperature to 95°C, and drop in 1.5h Complete 6.7g hydrogen peroxide solution (H 2 o 2 content is 30%), constant temperature reaction 2h to obtain the final product water quality stabilizer RG-9.

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Abstract

The invention provides preparation of a novel environmentally friendly and efficient water quality stabilizer RG-9. According to the stabilizer, water is taken as a solvent, monomers containing carboxylic acid group, ester group and ether group are aggregated into a copolymer water quality stabilizer RG-9 under the action of evocating agent and catalyst. The resisting capability on calcium carbonate scales can reach up to 95% when the concentration of CaCO3 is 900 mg / L and the inputting mount of the RG-9 is 8 mg / L in water.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to a preparation method of an environment-friendly and high-efficiency water quality stabilizer. Background technique [0002] With the continuous progress of human society and the rapid development of industrial and agricultural production, the water consumption of industry, agriculture and people's daily life is increasing day by day, which makes the earth's fresh water resources increasingly scarce, and human society is facing a serious threat of "water crisis". Among the total amount of water used in industry, agriculture and people's daily life, industrial water occupies the first place, and the amount of wastewater generated in industrial production processes also ranks first in the total amount of wastewater. How to reduce industrial water use and rationally treat and reuse industrial wastewater has drawn more and more attention. [0003] In order to reduce industrial w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/06C08F222/16C02F5/10
CPCC02F5/10C02F2303/06C08F222/06C08F222/16
Inventor 王良成卢鑫柳鸿斌常立民王良璧王璐张昆苏梅武祥张强常竞文
Owner LANZHOU JIAOTONG UNIV