High acid value hydrocarbon oil delayed coking method
A delayed coking method and high acid value hydrocarbon technology, which is applied in cracking, petroleum industry, non-catalytic thermal cracking, etc., can solve problems such as corrosion and fractionation tower corrosion, and achieve the effect of reducing corrosion and prolonging the coking start-up period
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[0034] Example 1
[0035] The atmospheric residual oil with a total acid value of 6mgKOH / g is heated to 410°C in the convection section and the upper part of the radiant section of the heating furnace, and then enters the reactor for moderate thermal cracking reaction. The pressure in the reactor is 0.2MPa, and the residence time is 30min. Sampling and analysis of the stream going to the middle and lower part of the radiant section of the heating furnace shows that the total acid value is 0.6 mgKOH / g, and the total acid value of the light oil at the top of the reactor is 0.3 mgKOH / g.
Example Embodiment
[0036] Example 2
[0037] The vacuum residue with a total acid value of 4mgKOH / g is heated to 420°C in the convection section and the upper part of the radiant section of the heating furnace, and then enters the reactor for moderate thermal cracking reaction. The pressure in the reactor is 0.3MPa, and the residence time is 40min. Sampling and analysis of the stream going to the middle and lower part of the radiant section of the heating furnace shows that the total acid value is 0.5 mgKOH / g, and the total acid value of the light oil at the top of the reactor is 0.2 mgKOH / g.
Example Embodiment
[0038] Example 3
[0039] The crude oil with a total acid value of 12mgKOH / g was heated to 430°C through the convection section and the upper part of the radiant section of the heating furnace, and then entered the reactor for moderate thermal cracking reaction. The pressure in the reactor was 0.3MPa, and the residence time was 50min. The upper part of the reactor went to the heating furnace. The total acid value of the stream in the middle and lower part of the radiation section is 1.5 mgKOH / g, and the total acid value of the light oil at the top of the reactor is 0.6 mgKOH / g.
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