Environment-friendly polyglycol ether multifunctional water treatment agent and preparation method thereof
A technology of polyglycol ether and polyglycol ether carboxylic acid, which is applied in the field of environment-friendly multifunctional water treatment agent, water treatment agent preparation and application, achieves good corrosion inhibition performance, low production cost, and green preparation process. friendly effect
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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. 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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