Fluorescence labeling acrylic acid-sodium acrylic sulphonate co-polymer water treatment agent and preparation method thereof

A sodium propylene sulfonate, fluorescent labeling technology, applied in water/sludge/sewage treatment, chemical instruments and methods, descaling and water softening, etc., can solve the problems of limited development and application, rare and difficult reaction raw materials, etc. Achieve the effect of improving management level, simplifying on-site operation and good dispersion performance

Inactive Publication Date: 2009-03-11
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current domestic research is mainly focused on the modification of polymers, which requires that the original water treatment agent must have modifiable amine or carboxyl groups, and the conditions required for polymer modification are relatively high, such as high temperature and high pressure. , so it is relatively difficult
For example, Chinese patent CN1229091A discloses a water treatment agent with tracer and scale inhibition and dispersion functions, but the water treatment agent is m

Method used

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  • Fluorescence labeling acrylic acid-sodium acrylic sulphonate co-polymer water treatment agent and preparation method thereof
  • Fluorescence labeling acrylic acid-sodium acrylic sulphonate co-polymer water treatment agent and preparation method thereof
  • Fluorescence labeling acrylic acid-sodium acrylic sulphonate co-polymer water treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0043] Example 2 Add 120 g of water, 14.4 g of sodium propylene sulfonate, 2.5 g of sodium hypophosphite and the fluorescent monomer (FC) 0.4 g, heated to 80°C under stirring, then added dropwise 33g of 10% ammonium persulfate solution and 36g of acrylic acid, the temperature was controlled at 90°C, the dripping was completed within 10 minutes, the temperature was continued for 3-5 hours, and the product was cooled and discharged to obtain the product of the present invention FC-AA-SAS (yellow liquid), namely

[0044] Fluorescently labeled acrylic acid-propylene sulfonate sodium copolymer water treatment agent, the general formula of the polymer is:

[0045]

[0046] Wherein n and m are 1-20.

[0047] The polymer has multiple functions such as fluorescent tracer function, scale inhibition and dispersion.

[0048] The ultraviolet absorption spectrum of the polymer is similar to that of the fluorescent monomer, and has absorption at 233nm and 388nm respectively. Its excita...

Embodiment 3

[0050] Example 3 The static scale inhibition method was used to evaluate the scale inhibition performance of FC-AA-SAS in Example 2 on calcium phosphate. The test conditions are as follows: temperature: 80°C; medicament: the product of Example 2; dosing concentration: 25mg·L -1 ;Test time: 10h; Test configuration water: Ca 2+ 250mg·L -1 , HCO 3 - 250mg·L -1 (both CaCO 3 count), PO 4 3- 5mg·L -1 , and the pH value is 9.0; at the same time, do a blank experiment without adding any medicament.

[0051] According to this method, the scale inhibition rate of the agent to calcium phosphate reaches 86.5%.

Embodiment 4

[0052] Example 4 The static scale inhibition method was used to evaluate the scale inhibition performance of FC-AA-SAS in Example 2 on calcium sulfate. The test conditions are as follows: temperature: 80°C; medicament: the product of Example 2; dosing concentration: 15mg·L -1 ;Test time: 10h; Test configuration water: Ca 2+ 2940mg·L -1 (as CaCO 3 Count), SO 4 2- 7200mg·L -1 , and the pH value is 7.5; at the same time, do a blank experiment without adding medicine.

[0053] According to this method, the scale inhibition rate of the agent to calcium sulfate is 98.9%.

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Abstract

The present invention discloses a fluorescence labeled acroleic acid-sodium allylsulfonate copolymer and a method for preparing the same. The method comprises the following steps: 4-bromine-1,8-naphthalic anhydride, methylamine, N-methyl diethylenediamine, and the like are used as material and is subject to amidation reaction, amination reaction, and quaternization reaction to be synthesized, and a novel fluorescence monomer 4-(N'-methyl-1-diethylenediamine)-N-methyl-1,8-naphthalimide allyl chloride quaternary ammonium salt is obtained by synthesis; and then the fluorescence monomer is copolymerized with sodium hypophosphite, acroleic acid and sodium allylsulfonate to obtain the FC-AA-SAS product. The raw materials for synthesizing the fluorescence monomer and the polymer are easy to obtain and the reaction conditions are mild. When the product is used in circulating water, the thickness of a medicament in a circulating water system can be accurately, duly and quickly measured through the variation of the fluorescence intensity, and the on-line medicine addition and the quantitative control are realized. Therefore, the on-site operation is largely simplified, and the management level is improved. The functional groups, such as sulfonic group, phosphino group and the like, are introduced into molecules, and thus the polymer has a plurality of functions, such as fluorescent tracing, anti-precipitation, disgregation and the like.

Description

Technical field: [0001] The invention relates to a scale-inhibiting dispersant for an industrial circulating cooling water system and a preparation method thereof, in particular to a fluorescently marked acrylic acid-sodium propylene sulfonate copolymer and a preparation method thereof. Background technique: [0002] In the process of using water treatment chemicals, dosing concentration is a very important parameter. If the concentration is too high, it will cause waste, increase the treatment cost and water pollution; if the concentration is too low, it will not be able to play the role of water treatment agent. The traditional technical process of detecting water treatment chemicals is complicated and has many interference factors, which does not meet the conditions of on-line measurement and real-time control. [0003] The use of fluorescent tracer technology to realize the online detection of water treatment chemicals and the research of automatic dosing control techno...

Claims

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Application Information

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IPC IPC(8): C02F5/00G01N21/00
Inventor 张跃华张其平石玉军雷武夏明珠王风云
Owner NANTONG UNIVERSITY
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