Making method of corrosion and scale inhibitor
A kind of anti-corrosion and anti-scaling agent, the technology of manufacturing method, applied in the direction of processing equipment corrosion/inhibiting dirt, petroleum industry, processing hydrocarbon oil, etc., can solve the problem of catalyst toxicity and side effects, and achieve the effect of preventing corrosion
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Embodiment 1
[0013] Add 110g of diethylenetriamine and 200g of oleic acid into a three-necked flask, stir and raise the temperature to 150°C for 5 hours under reduced pressure, and then raise the temperature to 200°C for 4 hours to completely dehydrate. Cool down to 130°C, add 70g of lactic acid, heat up to 150°C and react for 2 hours. The reaction solution was cooled to room temperature, and water and hydroxyethylene diphosphonic acid were added to adjust the pH value to 8 to obtain a water-soluble corrosion and scale inhibitor.
[0014] Example 1:
[0015] Add 110g of diethylenetriamine and 200g of oleic acid into a three-necked flask, stir and raise the temperature to 180°C for 4.5 hours under reduced pressure, and then raise the temperature to 200°C for 4 hours to completely dehydrate. Cool down to 130°C, add 70g of lactic acid, heat up to 150°C and react for 2 hours. The reaction solution was cooled to room temperature to obtain water-soluble imidazoline amide. Add 900g of water an...
Embodiment 2
[0017] Add 120g of triethylenetetramine and 220g of naphthenic acid into a three-necked flask, stir and raise the temperature to 200°C for 3 hours under reduced pressure, and then keep the temperature at 200°C for 4 hours until complete dehydration. Cool down to 130°C, add 80g of lactic acid, heat up to 150°C and react for 2 hours. The reaction solution was cooled to room temperature to obtain water-soluble imidazoline amide. Add 900g of water and 10g of hydroxyethylene diphosphonic acid to adjust the pH value to 7.5 to obtain a water-soluble corrosion and scale inhibitor.
Embodiment 3
[0019] Add 110g of diethylenetriamine and 200g of oleic acid into a three-necked flask, stir and raise the temperature to 150°C for 3 hours under reduced pressure, and then raise the temperature to 200°C for 4 hours to completely dehydrate. Cool down to 130°C, add 70g of glycolic acid, and heat up to 150°C for 2 hours. The reaction solution was cooled to room temperature to obtain water-soluble imidazoline amide. Add 900g of water and 8g of ethylenediamine methylene phosphonic acid to adjust the pH value to 8.0 to obtain a water-soluble corrosion and scale inhibitor.
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