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A fluorescent tracer scale inhibitor and its preparation method and application

A fluorescent tracer and scale inhibitor technology, applied in the field of scale inhibitors, can solve the problems of difficulty in inhibiting calcium phosphate dispersing iron oxide, difficulty in quickly and conveniently detecting scale inhibitors, and no tracer detection function, etc. Corrosion inhibition performance, online monitoring and automatic drug delivery functions, the effect of excellent calcium phosphate inhibition and dispersed iron oxide performance

Active Publication Date: 2021-04-06
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: Aiming at the problems that the existing antiscalants do not have trace detection function in application, it is difficult to quickly and conveniently detect the content of the antiscalant, and it is difficult to inhibit calcium phosphate and disperse iron oxide, etc., the present invention provides a new Fluorescent tracer type scale inhibitor and its preparation method and application

Method used

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  • A fluorescent tracer scale inhibitor and its preparation method and application
  • A fluorescent tracer scale inhibitor and its preparation method and application
  • A fluorescent tracer scale inhibitor and its preparation method and application

Examples

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Embodiment 1

[0039] Weigh 4-bromo-1,8-naphthalene dicarboxylic anhydride and dissolve it in absolute ethanol. Under stirring conditions, the mixed solution is slowly heated to 60 o C, then add ethanolamine dropwise, reflux for 3h after dropping within 0.5h (the mass ratio of 4-bromo-1,8-naphthalene dicarboxylic anhydride, ethanolamine, and ethanol is 1:0.3:40, and the magneton speed is 80r / min) . After the reaction, the product was filtered while it was hot, the filtrate was cooled, and filtered with suction, the obtained filter cake was recrystallized, and a light yellow solid product was obtained after drying.

[0040] Add the light yellow solid product obtained in the previous step into ethylene glycol methyl ether, stir while heating to fully dissolve, stir to form a uniform mixed solution, and then heat up to 80 oC, then add N-methylpiperazine dropwise, reflux for 5h after dripping in 0.5h (the mass ratio of light yellow solid product, N-methylpiperazine and ethylene glycol methyl et...

Embodiment 2

[0047] Weigh 4-bromo-1,8-naphthalene dicarboxylic anhydride and dissolve it in absolute ethanol. Under stirring conditions, the mixed solution is slowly heated to 60 o C, then add ethanolamine solution dropwise, and reflux for 3h after dropping within 0.5h (the mass ratio of 4-bromo-1,8-naphthalene dicarboxylic anhydride, ethanolamine, and ethanol is 1:0.6:60, and the magneton speed is 80r / min ). After the reaction, the product was filtered while it was hot, the filtrate was cooled, and filtered with suction, the obtained filter cake was recrystallized, and a light yellow solid product was obtained after drying.

[0048] Add the light yellow solid product obtained in the previous step into ethylene glycol methyl ether, stir while heating to fully dissolve, stir to form a uniform mixed solution, and then heat up to 80 o C, then drop N-methylpiperazine, reflux for 5h after dripping in 0.5h (the mass ratio of light yellow solid product, N-methylpiperazine and ethylene glycol met...

Embodiment 3

[0055] Weigh 4-bromo-1,8-naphthalene dicarboxylic anhydride and dissolve it in absolute ethanol. Under stirring conditions, the mixed solution is slowly heated to 60 o C, then add ethanolamine dropwise, reflux for 3h after dropping within 0.5h (the mass ratio of 4-bromo-1,8-naphthalene dicarboxylic anhydride, ethanolamine, and ethanol is 1:0.5:70, and the magneton speed is 80r / min) . After the reaction, the product was filtered while it was hot, the filtrate was cooled, and filtered with suction, the obtained filter cake was recrystallized, and a light yellow solid product was obtained after drying.

[0056] Add the light yellow solid product obtained in the previous step into ethylene glycol methyl ether, stir while heating to fully dissolve, stir to form a uniform mixed solution, and then heat up to 80 o C, then add N-methylpiperazine dropwise, reflux for 5h after dripping in 0.5h (the mass ratio of light yellow solid product, N-methylpiperazine and ethylene glycol methyl e...

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Abstract

The invention discloses a fluorescent tracer scale inhibitor and its preparation method and application. The general structural formula of the fluorescent tracer scale inhibitor is as follows: wherein, the number of repeating units n is 5-60, and in the structural formula The ratio range of the number of units a:b:c is (50‑300):(3‑25):1. Compared with the prior art, the fluorescent tracer scale inhibitor obtained by the invention can be monitored quickly and accurately on-line, and has a good inhibitory effect on inorganic scale, especially calcium phosphate and dispersed iron oxide.

Description

technical field [0001] The invention relates to a fluorescent tracer scale inhibitor and its preparation method and application, belonging to the technical field of scale inhibitors. Background technique [0002] China's economy is in a period of rapid growth, urban and industrial water use has increased significantly, and the contradiction between water supply and demand has become increasingly acute. The shortage of water resources is one of the main factors restricting the development of the country, especially in the west. In human water, industrial water accounts for a very large proportion, and with the rapid development of industrial production, industrial water consumption is increasing day by day, and cooling water accounts for more than 60%-70% of industrial water. Since there are various salts dissolved in industrial water, such as bicarbonate, carbonate, sulfate, silicate, phosphate and chloride, etc., calcium phosphate is a slightly soluble salt with a solubilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/12C08F220/06C08F216/18C08F226/06
CPCC02F5/12C08F220/06C08F216/18C08F226/06
Inventor 杨维本张少鹏杨朕符嫦娥侯天阳耿星月
Owner NANJING NORMAL UNIVERSITY
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