Seawater desalination corrosion inhibitor and preparation method and application thereof
A technology of corrosion inhibitor and n-butanol, which is applied in the field of seawater desalination corrosion inhibitor and its preparation, can solve the problems of Louis corrosion of carbon steel pipes, increase processing costs, and affect processing efficiency, so as to reduce corrosion speed, increase service life, The effect of simple preparation process
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[0019] Example 1
[0020] A seawater desalination corrosion inhibitor, comprising the following parts by weight of raw materials: 20 parts of n-butanol, 12 parts of 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, 1-(4 -10 parts of trifluoromethyl benzene)imidazoline-2-thione, 4 parts of sodium tripolyphosphate, 4.6 parts of tartaric acid, 2 parts of isoamyl iodide.
[0021] A preparation method of seawater desalination corrosion inhibitor, including the following steps:
[0022] (1) Add 1-(2-chlorophenyl)-3-methyl-5-pyrazolone and 1-(4-trifluoromethylbenzene)imidazolin-2-thione into a stirred heating kettle, Under the protection of nitrogen, heat to 195°C under the condition of stirring at 400 rpm, add 1 / 2 tartaric acid after stirring for 2 hours, continue stirring for 20 minutes, and cool for use after completion;
[0023] (2) Add sodium tripolyphosphate to 2 times its weight in deionized water, add the remaining tartaric acid, stir at 200 rpm and 40°C until it is completely dissolved, th...
Example Embodiment
[0025] Example 2
[0026] A seawater desalination corrosion inhibitor, comprising the following parts by weight of raw materials: 25 parts of n-butanol, 13 parts of 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, 1-(4 -11 parts of trifluoromethylbenzene)imidazoline-2-thione, 5 parts of sodium tripolyphosphate, 5 parts of tartaric acid, 3 parts of isoamyl iodide.
[0027] A preparation method of seawater desalination corrosion inhibitor, including the following steps:
[0028] (1) Add 1-(2-chlorophenyl)-3-methyl-5-pyrazolone and 1-(4-trifluoromethylbenzene)imidazolin-2-thione into a stirred heating kettle, Under the protection of nitrogen, heat to 198°C with stirring at 450 rpm, add 1 / 2 tartaric acid after stirring for 2.5 hours, continue stirring for 25 minutes, and cool for use after completion;
[0029] (2) Add sodium tripolyphosphate to 2.5 times its weight in deionized water, add the remaining tartaric acid, stir at 220 rpm and 45°C until it is completely dissolved, then add isoamyl io...
Example Embodiment
[0031] Example 3
[0032] A seawater desalination corrosion inhibitor, comprising the following parts by weight of raw materials: 30 parts of n-butanol, 14 parts of 1-(2-chlorophenyl)-3-methyl-5-pyrazolone, 1-(4 -12 parts of trifluoromethyl benzene) imidazoline-2-thione, 6 parts of sodium tripolyphosphate, 5.5 parts of tartaric acid, 4 parts of isoamyl iodide.
[0033] A preparation method of seawater desalination corrosion inhibitor, including the following steps:
[0034] (1) Add 1-(2-chlorophenyl)-3-methyl-5-pyrazolone and 1-(4-trifluoromethylbenzene)imidazolin-2-thione into a stirred heating kettle, Under the protection of nitrogen, heat to 200°C under the condition of stirring at 500 rpm, add 1 / 2 tartaric acid after stirring for 3 hours, continue stirring for 30 minutes, and cool for use after completion;
[0035] (2) Add sodium tripolyphosphate to 3 times its weight in deionized water, add the remaining tartaric acid, stir at 250 rpm and 50°C until it is completely dissolved, t...
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