Fluorescent tracing scale inhibitor and preparation thereof

A fluorescent tracer and antiscalant technology, which is applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. Scale and, high-efficiency dispersion performance, good compatibility effect

Inactive Publication Date: 2009-07-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, low-phosphorus or phosphorus-free formulations have the defect that it is difficult to detect the concentration of scale inhibitors in real time. In order to quickly and easily measure the concentration of scale inhibitors in industrial circulating water systems, fluorescent tracer technology is used to realize the on-line monitoring of water treatment chemicals. Research on monitoring and automatic dosing control technology has always been a hot spot

Method used

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  • Fluorescent tracing scale inhibitor and preparation thereof
  • Fluorescent tracing scale inhibitor and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1: At room temperature, add 210.0 g of citric acid monohydrate into a four-neck flask equipped with a stirring device and a reflux condenser, then add 215 mL of sulfuric acid aqueous solution with a volume concentration of 60%, heat and stir, and react at 125 ° C for 7 h. Cool to 40°C, filter with suction to obtain a yellow solid, wash with glacial acetic acid three times, recrystallize twice with glacial acetic acid, and dry under vacuum at 50°C for 5 hours to obtain aconitic acid;

[0023] in N 2 Atmosphere and room temperature, add 13.1g 8-hydroxyl-1,3,6-sodium pyrenetrisulfonate, 5.0g vinylbenzyl chloride liquid, 3g 50wt% NaOH aqueous solution and 110mL dimethyl sulfoxide to the four-necked flask, Stir at room temperature for 6 hours, filter, and distill the filtrate under reduced pressure at 50°C to remove dimethyl sulfoxide, add 150 mL of acetone, filter to obtain a yellow solid, and dry it in vacuum at 50°C for 48 hours to obtain 8-(4-vinylbenzyloxy)-1. ...

Embodiment 2

[0026] Example 2: At room temperature, add 210.0 g of citric acid monohydrate into a four-necked bottle equipped with a stirring device and a reflux condenser, then add 150 mL of sulfuric acid aqueous solution with a volume concentration of 80%, heat and stir, and react at 130 ° C for 6 h. Cool to 50°C, filter with suction to obtain a yellow solid, wash with glacial acetic acid three times, recrystallize with glacial acetic acid three times, and dry under vacuum at 60°C for 6 hours to obtain aconitic acid;

[0027] in N2 Atmosphere and room temperature, add 13.1g 8-hydroxyl-1,3,6-sodium pyrenetrisulfonate, 6.5g vinylbenzyl chloride liquid, 3.5g 50wt% NaOH aqueous solution and 125mL dimethyl sulfoxide to the four-necked flask , stirred at room temperature for 5h, filtered, and the filtrate was distilled off under reduced pressure at 60°C to remove dimethyl sulfoxide, then added 180mL of acetone, filtered to obtain a yellow solid, and dried in vacuo at 40°C for 36h to obtain 8-(4...

Embodiment 3

[0030] Example 3: At room temperature, add 258.0 g of sodium citrate into a four-necked flask equipped with a stirring device and a reflux condenser, then add 250 mL of sulfuric acid aqueous solution with a volume concentration of 50%, heat and stir, react at 140 ° C for 5 h, and cool to Suction filtration at 30°C to obtain a yellow solid, which was washed twice with glacial acetic acid and recrystallized twice with acetic acid, and dried in vacuum at 40°C for 5 hours to obtain sodium aconitate;

[0031] in N 2 Atmosphere and room temperature, add 13.1g 8-hydroxyl-1,3,6-sodium pyrenetrisulfonate, 6.0g vinylbenzyl chloride liquid, 5.0g 50wt% NaOH aqueous solution and 150mL dimethyl sulfoxide to the four-necked flask , stirred at room temperature for 6h, filtered, and the filtrate was distilled off under reduced pressure at 50°C to remove dimethyl sulfoxide, then added 100mL of acetone, filtered to obtain a yellow solid, dried in vacuo at 60°C for 48h, and obtained 8-(4-vinylben...

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PUM

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Abstract

The invention provides a fluorescent tracing antisludging agent and a preparation method thereof. The fluorescent tracing antisludging agent is an aqueous solution with solid content of between 20 and 50 weight percent through a free radical polymerization reaction of aconitic acid or salts thereof, an unsaturated double bond monomer containing vinyl and a benzyloxy vinyl monomer containing pyrene fluorophore. The structural formula of the fluorescent tracing antisludging agent is the formula, wherein B represents a constitutional repeating unit of the polymerized unsaturated double bond monomer containing vinyl; M is combination of one or more of H, NH4, Na or K; and m, n, and p represent the degree of polymerization, wherein m is between 1 and 5,000, n is between 1 and 5,000, and p is between 1 and 5,000.

Description

technical field [0001] The invention relates to a fluorescent trace scale inhibitor and a preparation method thereof, which belongs to the technical field of circulating cooling water treatment and has good scale inhibition and dispersion effects. Background technique [0002] In the circulating cooling water system in industrial production, due to the evaporation of water, the change of pH value, the change of temperature, the impurities in water, the pressure of the system and other factors during use, the alkaline earth metal cations contained in the water, such as Ca 2+ , Mg 2+ 、Ba 2+ and small amounts of other cations such as Fe 2+ , Fe 3+ 、Cu 2+ 、Al 3+ , Zn 2+ etc., will react with SO in water 4 2- , CO 3 2- 、HCO 3 - , OH - 、PO 4 3- , SiO 3 2- and other anions to form insoluble inorganic salts such as CaCO 3 , MgCO 3 , CaSO 4 , Ca 3 (PO 4 ) 2 , Mg(OH) 2 Scale (commonly known as scale) is deposited on the surface of pipes and heat exchangers, and...

Claims

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Application Information

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IPC IPC(8): C02F5/10
Inventor 周钰明余洁杜琨吴文导
Owner SOUTHEAST UNIV
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