Demetallization agent for hy drocarbon oil and its operation method
A demetallization agent and hydrocarbon oil technology, applied in the field of metals, can solve the problems of low removal efficiency, high cost, unfavorable industrialization, etc.
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Embodiment 1
[0021] The compound demetallization agent prepared in the laboratory consists of A: 10% formic acid, 10% acetic acid, 25% propionic acid; B: 40% maleic acid; C: 0.1% polyacrylamide; D: 1% 2-mercaptobenzo Thiazole; the remainder is deionized water.
[0022] The crude oil used in the experiment is heavy oil from the ninth district of Karamay, containing 240ppm calcium. The demulsifier FC9301 and demetallizer are made into an aqueous solution, the amount of demulsifier added is 50ppm, and the water injection rate is 10%. Then stir and mix with crude oil in the mixer to fully contact the oil and water, pour the oil-water mixture into the conical glass tank, put the conical tank into the DP-II electric desalter, the electric field gradient of the desalter is 200v / cm, and the temperature is 80°C. Time 1 hour. After the oil and water are separated, take the de-oiled oil sample and use the plasma emission spectrometer to measure the calcium content. Table 1 is the experimental resu...
Embodiment 2
[0025] The compound demetallization agent prepared in the laboratory is composed of A: 30% formic acid, 30% acetic acid, 10% butyric acid; B: 20% maleic acid; C: 0.2% polyacrylamide; D: 0.5% HPAA; ionized water.
[0026] The oil used in the experiment is the mixed oil (82.8ppm calcium) mixed with Beijiang crude oil (calcium content: 112.3ppm) and southern Xinjiang crude oil (calcium content 14ppm) at a ratio of 7:3. The experimental method is the same as in Example 1. The demulsifier is NS-9906, and the dosage is 50ppm. Table 2 is the experimental results.
Embodiment 3
[0029] The compound demetallization agent prepared in the laboratory consists of A: 30% propionic acid, 30% formic acid, 20% acetic acid; B: 10% succinic acid; C: 0.1% polyacrylamide; D: 0.5% hydroxyethylene di Phosphonic acid; remainder is deionized water.
[0030] The oil used in the experiment is Beijiang crude oil (calcium-containing: 112.3ppm), and the experiment method is the same as in Example 2. The demulsifier is NS-9906, the dosage is 50ppm. The experimental results are shown in Table 3.
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