Environment-friendly polyglycol ether multifunctional water treatment agent and preparation method thereof

A technology of polyethylene glycol ether and polyethylene glycol ether carboxylic acid, which is applied in the preparation and application of water treatment agents, and the field of environmentally friendly multifunctional water treatment agents, achieving simple and convenient operation, good corrosion inhibition performance, and good biodegradation performance. Effect

Inactive Publication Date: 2012-11-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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 is significantly improved, and it is the latest generation of Ca barrier 3 (PO 4 ) 2 Phosphorus-free water treatment agent for scale, but APES still contains nitrogen elements that cause eutrophication of water sources

Method used

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  • Environment-friendly polyglycol ether multifunctional water treatment agent and preparation method thereof
  • Environment-friendly polyglycol ether multifunctional water treatment agent and preparation method thereof

Examples

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Effect test

example 1

[0017] Example 1: at N 2 Add 100g of polyethylene glycol methyl ether into the protected reactor, add 120g of maleic anhydride and react at 65°C for 3.5h to obtain the reaction monomer of polyethylene glycol ether carboxylic acid; after adjusting the temperature to 70°C, add 50g of Aconic acid, potassium persulfate (1g), sodium persulfate (1g) and potassium metabisulfinate (1g) mixture, 220g water, after completion, continue to react at 70°C for 5.5h, after cooling down to room temperature, green environmental protection Polyethylene glycol ether multifunctional water treatment agent (PEGEY).

[0018] Gained PEGEY water treatment agent is when dosage is 8mg / L, to Ca 3 (PO 4 ) 2 Scale inhibition rate up to 99.1%, for CaCO 3 Scale inhibition rate is 91.3%, for CaSO 4 The scale inhibition rate is 93.6%. , 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 ...

example 2

[0019] Example 2: at N 2 Add 100g of polyethylene glycol n-butyl ether into the protected reactor, add 50g of maleic anhydride and react at 60°C for 1.5h to obtain the reaction monomer of polyethylene glycol ether carboxylic acid; after adjusting the temperature to 70°C, add 80g of acrylic acid , 3g of sodium persulfate, and 360g of water. After completion, the temperature was raised to 80°C to continue the reaction for 3 hours. After cooling down to room temperature, a green and environment-friendly polyethylene glycol ether multifunctional water treatment agent (PEGEY) was prepared.

[0020] When the dosage of the obtained PEGEY water treatment agent was 8mg / L, the Ca 3 (PO 4 ) 2 Scale inhibition rate up to 98.4%, for CaCO 3 Scale inhibition rate is 90.5%, for CaSO 4 The scale inhibition rate is 92.9%, the light transmittance of the solution containing Fe(III) which characterizes the performance of dispersing iron is 17.3%, and the corrosion inhibition rate of carbon ste...

example 3

[0021] Example 3: at N 2 Add 150g of polyethylene glycol lauryl ether into the protected reactor, add 260g of maleic anhydride and react at 100°C for 2.8h to obtain the reaction monomer of polyethylene glycol ether carboxylic acid; after adjusting the temperature to 80°C, add 120g of hydroxypropyl acrylate, 16g of sodium persulfate, and 870g of water. After completion, the reaction was continued at 80°C for 6.5h, and after cooling down to room temperature, a green and environmentally friendly polyglycol ether multifunctional water treatment agent (PEGEY) was prepared.

[0022] Gained PEGEY water treatment agent is when dosage is 8mg / L, to Ca 3 (PO 4 ) 2 Scale inhibition rate can reach 98.2%, for CaCO 3 Scale inhibition rate is 89.7%, for CaSO 4 The scale inhibition rate is 90.5%, the light transmittance of the Fe(III) solution, which characterizes the performance of dispersing iron, is 17.9%, and the corrosion inhibition rate for carbon steel can reach 89.7%.

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Abstract

An environment-friendly polyglycol ether multifunctional water treatment agent (namely PEGEY) is prepared through free radical copolymerization of polyglycol ether carboxylic acid reaction monomers and monomers containing vinyl unsaturated double bonds. The structural formula of the environment-friendly polyglycol ether multifunctional water treatment agent is figured as follows, wherein A represents a constitutional repeating unit formed after the polymerization of the monomers containing the vinyl unsaturated double bonds, the polymerization degree x is 1-5,000, the polymerization degree y is 1-5,000, the number m of repeating units is 3-1,000, and R represents C1-C18 saturated alkyl.

Description

technical field [0001] The invention relates to a green and environment-friendly polyglycol ether multifunctional water treatment agent (PEGEY) and a preparation method thereof, which is a phosphorus-free, nitrogen-free, biodegradable environment-friendly polyglycol ether suitable for industrial circulating cooling water systems. The functional water treatment agent is used for the dispersed treatment of corrosion and scale inhibition of water quality, and belongs to the preparation and application technology of the water treatment agent in the technical field of water treatment. Background technique [0002] The use of circulating cooling water is a common way to save industrial water, but inorganic metal ions such as calcium and magnesium ions in the water after repeated use of cooling water can easily form inorganic salts such as calcium phosphate, calcium carbonate, calcium sulfate, magnesium carbonate, etc. At the same time, due to supplementary water, residual rust in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C08F290/06
Inventor 周钰明黄镜怡刘广卿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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