A kind of environment-friendly crude oil decalcification agent and preparation method thereof
A crude oil decalcification agent, an environmentally friendly technology, applied in the refining of hydrocarbon oil, petroleum industry and other directions, can solve the problems of easy sediment blockage of equipment pipelines, strong corrosiveness of industrial equipment, expensive chemicals, etc., and achieve a green and environmentally friendly preparation process. , The effect of low production cost and simple use process
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Embodiment 1
[0019] Example 1: at N 2 Add 80g of allyloxypolyethylene glycol monoether and 20g of cysteine into the reaction kettle and mix them evenly at 25°C, adjust the pH to 3 with 10wt% hydrochloric acid, react with microwave for 0.1h, and the microwave power is 300W. After the microwave reaction, continue to react at 90°C for 2 hours, then weigh 30g of allylthiourea, 20g of monoethyl maleate, 10g of mercaptoethanol and 300g of distilled water into the reaction kettle and mix evenly. After cooling down to 85°C, add 50g of 4wt% sodium persulfate aqueous solution, dripped for 1 hour, continued to react at 85°C for 3 hours after the dropwise addition, and after dropping to 25°C, a brown-red transparent environment-friendly crude oil decalcifier was obtained.
[0020] Taking Luning Pipeline Oil as the experimental crude oil, the calcium content is 25.6ppm, and the iron content is 7.3ppm. When the dosage of the obtained environment-friendly crude oil decalcifier is 115ppm, the decalcific...
Embodiment 2
[0021] Example 2: at N 2 Add 100g of allyloxypolyethylene glycol monoether and 30g of asparagine into the reaction kettle and mix them evenly at 25°C, adjust the pH to 2.5 with 10wt% hydrochloric acid, react with microwave for 0.3h, and the microwave power is 500W. After the reaction, continue to react at 60°C for 3 hours, then weigh 50g of allylthiourea, 30g of monoethyl maleate, 10g of mercaptopropionic acid and 250g of distilled water into the reaction kettle and mix evenly. After the temperature rises to 85°C, add 50g of The 6wt% ammonium persulfate aqueous solution was dropped for 2 hours. After the dropwise addition, the reaction was continued at 85° C. for 4 hours. After the temperature was lowered to 25° C., a brown-red transparent environment-friendly crude oil decalcifier was obtained.
[0022] Taking Luning Pipeline Oil as the experimental crude oil, its calcium content is 27.7ppm, and its iron content is 6.9ppm. When the dosage of the obtained environment-friendly ...
Embodiment 3
[0023] Example 3: In N 2 Add 120g of allyloxypolyethylene glycol monoether and 35g of cysteine into the reaction kettle and mix them evenly at 25°C, adjust the pH to 3.5 with 15wt% hydrochloric acid, react with microwave for 0.5h, and the microwave power is 700W. After the microwave reaction, continue to react at 80°C for 5 hours, then weigh 45g of allylthiourea, 30g of monomethyl fumarate, 15g of mercaptopropionic acid and 300g of distilled water into the reaction kettle and mix evenly. After heating to 85°C, add dropwise 50g of 8wt% sodium persulfonate aqueous solution was dropped for 0.5h. After the dropwise addition, the reaction was continued at 85°C for 6h, and after the temperature dropped to 25°C, a brown-red transparent environment-friendly crude oil decalcifier was obtained.
[0024] Taking Luning Pipeline Oil as the experimental crude oil, its calcium content is 29.7ppm, and its iron content is 7.7ppm. When the dosage of the obtained environment-friendly crude oil...
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