Demetalization method for crude oil
A technology for demetallization and crude oil, which is applied in the field of hydrocarbon oil refining, can solve the problems of further improvement of demetallization rate, large amount of chemical agents, harsh reaction conditions, etc., and achieves the advantages of simple operation, simple equipment, low reaction temperature and pressure Effect
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[0027] Example 1
[0028] A domestic crude oil, metal content: nickel 33.5μg / g, vanadium 222.4μg / g, calcium 17.5μg / g, magnesium 1.6μg / g, iron 6.8μg / g.
[0029] 1700 μg / g of dimethyl phosphite and 300 μg / g of tert-butyl benzene peroxide were added to the crude oil, and the mixture was stirred and mixed at 130° C. and reacted for 180 min. Then, 100 μg / g of polyether demulsifier ST-14 (purchased from Shandong Binzhou Chemical Group) and 6% water of crude oil mass were added to the crude oil. Dehydration in an electric field of cm for 80 min to obtain an oil sample with metal removed. The metal content of the oil samples was determined by inductively coupled plasma emission spectroscopy, and the results are shown in Table 1.
[0030] Table 1
[0031] project
Example Embodiment
[0032] Example 2
[0033] The test crude oil was the same as in Example 1. The metals in the crude oil were removed by the same method as in Example 1, except that the consumptions of dimethyl phosphite and tert-butylbenzene peroxide were both 15% of the consumptions of Example 1. The experimental results are shown in Table 2.
[0034] Table 2
[0035] project
Example Embodiment
[0036] Example 3
[0037] The test crude oil was the same as in Example 1. The same method as in Example 1 was adopted to remove metals from crude oil, except that the amount of dimethyl phosphite was 1940 μg / g, and the amount of tert-butylbenzene peroxide was 60 μg / g. The test results are shown in Table 3.
[0038] table 3
[0039] project
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