Method for prolonging operation period of hydrogenation device
A technology of hydrogenation unit and operating cycle, which is applied in the petroleum industry, refining to remove heteroatoms, and treat hydrocarbon oil, etc. It can solve problems such as complex operation, increase economic benefits, realize long-term operation, and increase operational complexity. Effect
Active Publication Date: 2012-05-09
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
[0030] according to figure 1The reactor structure shown adopts FHRS-1 (hydrogenation silicon trapping agent), FZC-102B (hydrogenation protection agent) and FH-40C (main hydrorefining catalyst) developed and produced by Fushun Petrochemical Research Institute. Two catalyst beds are set up, the first catalyst bed is filled with FHRS-1, an overflow pipe with pressure difference control is set in the middle, and the pressure burst membrane is made of stainless steel. The second catalyst bed is filled with a small amount of FHRS-1, FZC-102B, and FH-40C. The properties of raw oil are shown in Table 1, and the process conditions and product properties after 2 months of operation are shown in Table 2.
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Abstract
The invention discloses a method for prolonging the operation period of a hydrogenation device. An overflow pipe is arranged on an upper catalyst bed layer of a reactor, the upper end of the overflow pipe passes through the upper catalyst bed layer, the lower end of the overflow pipe is connected with a gas and liquid distributor near a lower catalyst bed layer in the reactor, the upper end of the overflow pipe is sealed by a pressure blasting film, and the blasting pressure difference of the pressure blasting film is smaller than 0.45MPa and is greater than 0.1MPa. When the pressure reduction of the upper catalyst bed layer of the reactor exceeds the blasting limit of the pressure blasting film, the pressure blasting film of the overflow pipe is broken, and gas and liquid material flows pass through the upper catalyst bed layer through the overflow pipe to enter the lower catalyst bed layer for continuously carrying out hydrogenation reaction. The method has the advantages that only the pressure blasting overflow pipe is arranged in the existing device, the pressure difference of the catalyst bed layers of the reactor can be reduced, the catalyst bed skimming period can be reduced, and the operation time of the device is prolonged.
Description
technical field [0001] The invention relates to a method for prolonging the operation period of a hydrogenation device, belonging 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 utilization of residual oil. 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 u...
Claims
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IPC IPC(8): C10G45/02C10G45/00C10G49/00
Inventor 王喜彬刘建宇孙万付曾榕辉
Owner CHINA PETROLEUM & CHEM CORP