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Fluorescent-traced green and environment-friendly polyether corrosion and scale inhibiting and dispersing agent and preparation method thereof

A corrosion and scale inhibition, green and environmental protection technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. Poor effect, no phosphorus and other problems, to achieve the effect of on-line detection and automatic drug delivery, green and environment-friendly preparation process, good biodegradation performance

Inactive Publication Date: 2012-12-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The more researched phosphorus-free water treatment agents are carboxylic acid water treatment agents, such as polyacrylic acid (PAA), polyepoxysuccinic acid (PESA), etc., although US patents 5,062,962 and 5,147,555 show that PESA has an 3 and CaSO 4 It has good scale inhibition effect, but the effect of calcium phosphate inhibition is very poor, and the dispersion and corrosion inhibition performance is poor
American Betz company launched a new generation of sulfonate copolymer AA-APES (acrylic acid-allyloxypolyethoxysulfate copolymer) in 2003, blocking Ca 3 (PO 4 ) 2 The efficiency of AA-APES is significantly improved, and AA-APES has a higher tolerance to water hardness, suspended solids, and temperature. It is the latest generation of Ca 3 (PO 4 ) 2 Phosphorus-free water treatment agent for scale, but APES still contains nitrogen elements that cause eutrophication of water sources and the effect of inhibiting calcium sulfate scale is poor
In addition, a major disadvantage of phosphorus-free water treatment agents is that they do not contain phosphorus in their structure, so they cannot be detected by the commonly used ammonium molybdate spectrophotometric method, so that online detection and automatic administration of the concentration of water treatment agents cannot be performed.

Method used

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  • Fluorescent-traced green and environment-friendly polyether corrosion and scale inhibiting and dispersing agent and preparation method thereof
  • Fluorescent-traced green and environment-friendly polyether corrosion and scale inhibiting and dispersing agent and preparation method thereof

Examples

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Effect test

example 1

[0019] Example 1: at N 2 Add 100g of allyl polyethylene glycol monoether to the protected reactor, add 100g of maleic anhydride and react at 65°C for 2 hours to obtain a polyether carboxylic acid reaction monomer; add 0.5g of 8-allyloxy-1,3 , 6-Pyrene trisulfonate, then add 200g of water, mix well and adjust the temperature to 70°C, then add 12g of sodium persulfate (dissolved in 60g of water) dropwise, after 1.5h of dropwise addition, raise the temperature to 80°C to continue After reacting for 3 hours and cooling down to room temperature, a fluorescent tracer green and environment-friendly polyether corrosion and scale inhibitor dispersant (APEYYG) was prepared.

[0020] When the dosage of the obtained APEYYG is 8mg / L, the Ca 3 (PO 4 ) 2 Scale inhibition rate up to 99.5%, for CaCO 3Scale inhibition rate is 92.7%, for CaSO 4 The scale inhibition rate is 95.8%, the light transmittance of the solution containing Fe(III) which characterizes the performance of dispersing iro...

example 2

[0021] Example 2: at N 2 Add 150g of allyl polyethylene glycol monoether and 100g of maleic anhydride to the protected reactor to react at 70°C for 1.5h to obtain a polyether carboxylic acid reaction monomer; add 5g of 8-allyloxy-1,3 , 6-pyrene trisulfonate sodium, then add 80g of water, mix well and adjust the temperature to 75°C, then add dropwise 15g of potassium persulfate (7g) and sodium persulfate (8g) mixture (dissolved in 80g of water), drop After the addition, the temperature was raised to 90°C, and the reaction was continued for 2.5 hours. After cooling down to room temperature, a fluorescent tracer green and environment-friendly polyether corrosion and scale inhibitor dispersant (APEYYG) was prepared.

[0022] When the obtained APEYYG dosage is 8mg / L, to Ca 3 (PO 4 ) 2 Scale inhibition rate up to 99.6%, for CaCO 3 Scale inhibition rate is 91.9%, for CaSO 4 The scale inhibition rate is 95.2%. , The light transmittance of Fe(III) solution, which characterizes th...

example 3

[0023] Example 3: at N 2 Add 120g allyl polyethylene glycol monoether to the protected reactor, add 130g maleic anhydride and react at 100°C for 2 hours, add 20g 8-allyloxy-1,3,6-pyrene trisulfonate sodium, and then add 280g of water, after mixing evenly, adjust the temperature to 80°C, then add 16g of sodium persulfate (dissolved in 60g of water) dropwise, after the dropwise addition, raise the temperature to 95°C, continue the reaction for 2 hours, and after cooling down to room temperature, obtained Fluorescent tracer green environment-friendly polyether corrosion and scale inhibitor dispersant (APEYYG).

[0024] When the obtained APEYYG dosage is 8mg / L, to Ca 3 (PO 4 ) 2 Scale inhibition rate up to 97.1%, for CaCO 3 Scale inhibition rate is 88.9%, for CaSO 4 The scale inhibition rate is 92.5%, the light transmittance of Fe(III) solution, which characterizes the performance of dispersing iron, is 16.9%, and the corrosion inhibition rate of carbon steel can reach 92.8%....

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Abstract

The invention provides a fluorescent-traced green and environment-friendly polyether corrosion and scale inhibiting and dispersing agent (APEYYG) and a preparation method of the fluorescent-traced green and environment-friendly polyether corrosion and scale inhibiting and dispersing agent. The fluorescent-traced green and environment-friendly polyether corrosion and scale inhibiting and dispersing agent is prepared by copolymerizing a polyether carboxylic reactive monomer and a fluorescent monomer with unsaturated double bonds through free radicals; the agent has a structural formula (see the accompanying drawing), wherein A is a repetition structure unit obtained by copolymerizing the fluorescent monomer with unsaturated double bonds, the polymerization degree x is 5 to 5000, the polymerization degree y is 5 to 5000 the polymerization degree p is 5 to 5000, and the repetitive unit n is 1 to 100.

Description

technical field [0001] The invention relates to a fluorescent tracer green environment-friendly polyether corrosion and scale inhibitor dispersant (APEYYG) and a preparation method thereof, which is a phosphorus-free, nitrogen-free, biodegradable and capable of realizing A multifunctional water treatment agent with on-line detection and automatic administration is used for the corrosion and scale inhibition dispersion treatment of water quality, and belongs to the preparation and application technology of the corrosion and scale inhibition dispersion agent in the technical field of water treatment. Background technique [0002] In the circulating cooling water system in industrial production, due to the evaporation of water, the change of pH value, the rise of temperature, the change of water flow rate, 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C08F290/06
Inventor 周钰明刘广卿黄镜怡姚清照凌磊王虎传曹科刘亚辉吴文导孙伟
Owner SOUTHEAST UNIV
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