Method for hydrotreating coking distillate
A technology for coking distillate oil and hydrotreating, which is applied in hydrotreating process, treating hydrocarbon oil, petroleum industry, etc., can solve problems such as complicated operation, increase economic benefits, avoid excessive pressure drop increase, and reduce sediment filtration burden effect
Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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Embodiment 1
[0026] according to figure 1 In the reactor structure shown, the particle size of the catalyst bed gradation decreases from bottom to top, and the porosity of the catalyst bed also decreases. The three catalysts are FH-40C, FHRS-1, FZC-102B developed and produced by Fushun Petrochemical Research Institute. FH-40C is the main hydrorefining catalyst, FHRS-1 is the hydrogenation silicon trapping agent, and FZC-102B is the additive Hydrogen protectant. The main properties of the catalyst are shown in Table 1. The volume ratio of the three catalyst beds of FZC-102B, FHRS-1 and FH-40C is 2:2:6. The raw oil properties are shown in Table 2, and the process conditions and product properties after 2 months of operation are shown in Table 3.
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The invention discloses a method for hydrotreating coking distillate. In the method, after being mixed, raw material oil and hydrogen enter into a reactor from the bottom, a part of mechanical impurities, such as fine coke power, coke particles, iron sulfide, and the like, are separated after the raw oil and the hydrogen pass through a mechanical impurity sedimentation and deposition region, the material flow goes up to contact a hydrogenation catalyst bed layer for carrying out the hydrogenation reaction, and then the material flow is discharged from the top of the reactor. The method can be used as the pre-hydrogenation process of the coking distillate, also can be used as the main hydrogenation process of the coking distillate, or can be used in the pre-hydrogenation process and the main hydrogenation process at the same time. The method for hydrotreating coking distillate does not need to make great change to the traditional devices, and can realize long-period operation of the devices and enhance economic benefits with small investment.
Description
Technical field [0001] The invention relates to a coking distillate hydrotreating method, which belongs to the technical field of petrochemical industry. Background technique [0002] In recent years, due to the increasing scarcity of petroleum resources worldwide and the increasing demand for energy in various countries, people have paid more and more attention to the technology of lightening residual oil. As a kind of decarburization technology, the residue coking process has the advantages of low investment and low operating cost, so it has been widely developed. [0003] Coking distillate (coking naphtha, coking diesel oil, coking wax oil) has high olefin content, high sulfur, nitrogen, silicon and other heteroatom content, and poor stability. It cannot be used directly as a product or even directly used as a feed for downstream devices. In order to make the coking distillate oil meet the end product standards or meet the feed requirements of downstream devices, it must be hyd...
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Inventor 王喜彬刘雪玲曹春青曲涛李扬
Owner CHINA PETROLEUM & CHEM CORP
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