A kind of hydrocracking method for producing jet fuel from straight-run diesel oil
A technology of hydrocracking and straight-run diesel oil, which is applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems of multi-equipment, complex operation, large circulation of kerosene fraction, etc., and achieve the effect of improving yield
Active Publication Date: 2020-10-16
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, this method needs to increase more equipment, and the circulation of kerosene fraction is relatively large, which increases the investment of the device, and the operation is more complicated
Method used
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Embodiment 1～6
[0028] In this example, two kinds of straight-run diesel oils A and B were used as feedstock oils. The catalysts were all commercial catalysts developed by Fushun Petrochemical Research Institute. The hydrocracking reaction zone was filled with FC-50 hydrocracking catalyst. The hydrofinishing reaction zone is filled with FF-46 hydrofinishing catalyst, and the specific operation process used is shown in the attached figure 1 . In the embodiment, the form of two reactors connected in series is adopted. The properties of the feedstock oil are shown in Table 1, the basic properties of the catalyst are shown in Table 2, the feedstock oil of Examples 1 to 3 is straight-run diesel oil A, and its process operating conditions and results are shown in Tables 3 to 4; the feedstock oils of Examples 4 to 6 are Straight-run diesel oil B, its process operating conditions and results are shown in Table 5-Table 6;
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The invention discloses a hydrocracking method for producing jet fuel by straight-run diesel oil. The method comprises the following steps: (1) mixing a straight-run diesel oil raw material with hydrogen gas, without the need of carrying out hydrogenation treatment; directly enabling a mixture to enter a hydrocracking reaction region; enabling the mixture to be in contact with a hydrocracking catalyst and carrying out hydrocracking reaction; (2) after cooling a full-fraction hydrocracking product obtained by step (1), enabling the product to enter a hydrogenation refining reaction region; under a condition of relatively low temperature and / or a large volume space velocity, carrying out aromatic hydrogenation saturation reaction, hydrogenation and desulfurization reaction and hydrogenation and denitrification reaction; (3) enabling a refined full-fraction product obtained by step (2) to enter a separation and fractionation system, so as to obtain naphtha and jet fuel products. Compared with the prior art, the method disclosed by the invention can be used for producing the straight-run diesel oil into the jet fuel at maximum.
Description
technical field [0001] The invention relates to a production method of jet fuel, in particular to a production method for producing high-quality jet fuel through straight-run diesel hydrocracking. Background technique [0002] With the continuous expansion of the international air transport industry, the global demand for jet fuel is increasing year by year, with an annual growth rate of about 5.0%, far higher than the annual growth rate of gasoline and diesel of 1.0% to 1.5%, which has greatly driven the global The demand for high-quality jet fuel products in the oil market has also promoted the rapid development of jet fuel production technology in the oil refining industry. Worldwide, the existing jet fuel production technologies are mainly straight-run jet fuel distillate hydrotreating technology and hydrocracking technology. Compared with diesel or gasoline products, jet fuel products have more advantages in profit, which greatly promotes major oil refineries. Enterpri...
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IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/1055C10G2300/1059
Inventor 郭蓉彭冲方向晨曾榕辉吴子明孙洪江
Owner CHINA PETROLEUM & CHEM CORP