Synthetic method for water-soluble fluorescent tracer

A fluorescent tracer and synthesis method technology, applied in the field of synthesis of water-soluble fluorescent tracers, can solve the problems of rare fluorescent tracers

Inactive Publication Date: 2010-03-10
MAOMING SUNION GUOSONG FINE CHEM
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few fluorescent tracers that can be used in industrial circulating water that are not affected by oxidative bactericides.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Synthetic method for water-soluble fluorescent tracer
  • Synthetic method for water-soluble fluorescent tracer
  • Synthetic method for water-soluble fluorescent tracer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 25g of 1.8-naphthalene dicarboxylic anhydride; 15g of o-phenylenediamine and 200g of glacial acetic acid in a four-necked flask equipped with a stirring device and a reflux condenser at room temperature. Mix and stir evenly, and slowly raise the temperature to 110-120°C, react under reflux for 3 hours, then distill off the glacial acetic acid and collect the glacial acetic acid fraction (it can be used repeatedly instead of glacial acetic acid), and about 195g of glacial acetic acid can be collected. Green glacial acetic acid distillate. About 40 g of orange-yellow solid material was obtained in a four-necked bottle. Then weigh 200 g of concentrated sulfuric acid and 0.5 g of catalyst and put them into a four-neck flask, slowly raise the temperature to 150° C., and react at 150 to 180° C. for 3 hours, while keeping continuous stirring. After the reaction was completed, the temperature was lowered to below 50° C., and then 800 ml of deionized water was added into th...

Embodiment 2

[0021] Embodiment 2: the stability test of water-soluble fluorescent tracer to oxidative bactericide:

[0022] In order to fully simulate the working conditions of the industrial circulating water system, the test water is taken from the on-site water of a circulating water field with a concentration factor of 5.6 in the normal operation of a refinery. Oxidizing fungicides were taken from strong chlorine and organic bromine fungicides (produced by Shanghai Future Company) used on site by an enterprise. According to the needs of the experiment, take three 250ml brown volumetric flasks and label them with A, B, and C respectively. In bottle A, use test water and water-soluble fluorescent tracer to prepare 5ppm tracer test water aqueous solution. In bottle B, use test water to prepare 5ppm tracer, 1ppm strong chlorine essence (as Cl 2 meter) test aqueous solution. In bottle C, use test water to prepare 5ppm tracer, 1ppm organic bromine fungicide (as Cl 2 meter) test aqueous s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Sensitivityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a synthetic method for a water-soluble fluorescent tracer, which comprises the following steps: (1) 10 portions to 25 portions of 1, 8-naphthalic anhydride and 3 portions to 10 portions of o-phenylenediamine are added into 80 portions to 200 portions of organic solvent, and the mixture of the 1, 8-naphthalic anhydride, the o-phenylenediamine and the organic solvent are heated to 80 DEG C to 150 DEG C for reflux reaction for 2 hours to 4 hours and the organic solvent is distilled out, thus obtaining an orange fluorescent solid matter; and (2) the solid matter obtained from step (1) is subjected to sulfonation reaction, wherein the dosage of a sulfonating agent is 5 times to 20 times the solid matter in respect of weight; and the reaction temperature is 150 DEG C to300 DEG C and reaction time is 3 hours to 5 hours. The water-soluble fluorescent tracer has simple preparation and good using effect and water solubility, has synergistic effect when being mixed witha water stabilizer and can resist against the influence of oxidative bactericide and non-oxidative bactericide commonly used in an industrial circulating water system.

Description

technical field [0001] The invention relates to a synthesis method of a water-soluble fluorescent tracer. The fluorescent tracer can be used as an inert tracer in industrial circulating cooling water for on-line trace and on-line analysis, thereby realizing automatic dosing control. Background technique [0002] In order to control the corrosion and scaling of circulating water, it is usually achieved by adding a certain concentration of corrosion and scale inhibitors. In order to obtain a good water treatment effect, in addition to selecting an excellent formula, the key is to strictly control the concentration of the water stabilizer within the specified range. At present, the domestic circulating water system generally adopts artificial timing and uniform dosing, and the effective value of the concentration of the chemical in the water is obtained through analysis, and the opening of the metering pump is adjusted based on this. However, due to the large volume of the sys...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/06C09K11/06G01N21/64
Inventor 梁汉国
Owner MAOMING SUNION GUOSONG FINE CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap