Phosphate-free corrosion inhibition antisludging agent and preparation method thereof
A phosphorus-free corrosion and scale inhibitor technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve water eutrophication, affect the service life of pipelines, pipelines Reduced thermal conductivity and other issues, to achieve the effect of saving processing costs, good corrosion inhibition effect, and preventing the decline of thermal conductivity
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Embodiment 1
[0017] Select benzoic acid as agent A, toluene as solvent C, ethylenediamine as agent B, and sodium acetate as agent D, stir at 150°C for 1 hour, then keep at 170°C for 3 hours, and distill at 120°C for 1 hour. The brownish-yellow viscous liquid obtained is product 1#.
Embodiment 2
[0019] Select benzoic acid as agent A, toluene as solvent C, diethylenetriamine as agent B, and sodium acetate as agent D, stir at 150°C for 1 hour, then keep at 170°C for 3 hours, and distill at 120°C for 1 hour, namely The brownish-yellow viscous liquid that can be obtained is product 2#.
Embodiment 3
[0021] Choose sodium benzoate as agent A, xylene as solvent C, diethylenetriamine as agent B, and sodium dodecylbenzenesulfonate as agent D. Stir at 150°C for 2 hours, then at 180°C for 3 hours, and then at 110°C After distilling under reduced pressure at ℃ for 1 hour, a brown-yellow viscous liquid is obtained, which is the product 3#.
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