Method for hydrotreating coking distillate
A technology for coking distillate oil and hydrotreating, applied in hydrotreating process, treating hydrocarbon oil, petroleum industry, etc., can solve problems such as complicated operation, increase economic benefit, reduce sediment filtration burden, and increase the maximum allowable operating pressure poor effect
Active Publication Date: 2014-07-23
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
But this method needs to add a reactor, and the operation is complicated
Method used
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Embodiment 1
[0026] according to figure 1 In the reactor structure shown, the catalyst bed gradation decreases from bottom to top in order of particle size, and the void ratio of the catalyst bed also decreases in order. The three catalysts are FH-40C, FHRS-1, and FZC-102B developed and produced by Fushun Petrochemical Research Institute. 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 properties of raw oil 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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Abstract
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 method for hydrotreating coking distillate oil, 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 residual oil lightening. As a kind of decarbonization technology, residual oil coking process has the advantages of low investment and low operating cost, so it has been widely developed. [0003] Coking distillate oil (coking naphtha, coking diesel oil, coking wax oil) has high olefin content, high content of sulfur, nitrogen, silicon and other heteroatoms, and poor stability. It cannot be used directly as a product, or even directly as a feed for downstream devices. In order to make the coker distillate meet the end product standard or meet the feed requirements of downstream units, hy...
Claims
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IPC IPC(8): C10G65/04
Inventor 王喜彬刘雪玲曹春青曲涛李扬
Owner CHINA PETROLEUM & CHEM CORP
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