Fluorescent tracing-type scale inhibitor and preparation method and application thereof

A technology of fluorescent tracer and scale inhibitor, applied in the field of scale inhibitor, can solve the problems of no tracer detection effect, difficulty in inhibiting calcium phosphate dispersing iron oxide, difficulty in detecting scale inhibitor quickly and conveniently, etc. On-line monitoring and automatic drug delivery function, the effect of improving corrosion inhibition performance, excellent calcium phosphate inhibition and dispersing iron oxide performance

Active Publication Date: 2018-07-27
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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  • Fluorescent tracing-type scale inhibitor and preparation method and application thereof
  • Fluorescent tracing-type scale inhibitor and preparation method and application thereof
  • Fluorescent tracing-type scale inhibitor and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0039] Weigh 4-bromo-1,8-naphthalene dicarboxylic anhydride and dissolve it in absolute ethanol. Under the condition of stirring, slowly heat the mixed solution to 60°C, then add ethanolamine dropwise, and reflux for 3h ( 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, then raise the temperature to 80°C, then add N-methylpiperazine dropwise, within 0.5h Reflux for 5 hours after dropping (the mass ratio of light yellow solid product, N-methylpiperazine, and ethylene glycol methyl ether obt...

Embodiment 2

[0047] Weigh 4-bromo-1,8-naphthalene dicarboxylic anhydride and dissolve it in absolute ethanol. While stirring, heat the mixed solution slowly to 60°C, then add ethanolamine solution dropwise, and reflux for 3 hours after dropping within 0.5h (The mass ratio of 4-bromo-1,8-naphthalic 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, then raise the temperature to 80°C, then add N-methylpiperazine dropwise, within 0.5h Reflux for 5 hours after dropping (the mass ratio of light yellow solid product, N-methylpiperazine, and ethylene glycol methyl...

Embodiment 3

[0055] Weigh 4-bromo-1,8-naphthalene dicarboxylic anhydride and dissolve it in absolute ethanol. Under the condition of stirring, slowly heat the mixed solution to 60°C, then add ethanolamine dropwise, and reflux for 3h ( The mass ratio of 4-bromo-1,8-naphthalic 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, then raise the temperature to 80°C, then add N-methylpiperazine dropwise, within 0.5h Reflux for 5 hours after dropping (the mass ratio of light yellow solid product, N-methylpiperazine, and ethylene glycol methyl ether obtained in the ...

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Abstract

The invention discloses a fluorescent tracing-type scale inhibitor and a preparation method and an application thereof. A structural general formula of the fluorescent tracing-type scale inhibitor isshown as the specification, wherein a repeating unit number n is 5-60, and a proportion scope of the unit numbers a to b to c in the structural formula is (50-300):(3-25):1. Compared with the prior art, the fluorescent tracing-type scale inhibitor realizes rapid and accurate on-line monitoring, has good inhibition effect for inorganic scale, and especially has excellent effects for inhibiting calcium phosphate and dispersing 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 Applications(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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