Process method for prolonging operation period of hydrogenation device
A technology of operation cycle and process method, which is applied in the petroleum industry, refining to remove heteroatoms, and treat hydrocarbon oil. It can solve the problems of catalyst bed blockage, reduce pressure drop, ensure production safety, and have a simple method. Effect
Active Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
Ordinary gas-liquid distribution plate only has the function of gas-liquid distribution, and has no effect on alleviating the blockage of the catalyst bed
Method used
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Embodiment 1
[0033] FHRS-1 (hydrogenation silicon scavenger), FZC-102B (hydrogenation protection agent) and FH-40C (main hydrorefining catalyst) developed and produced by Fushun Petrochemical Research Institute are used. according to figure 1 As shown in the schematic structure, the reactor is equipped with two catalyst beds, the first catalyst bed is filled with FHRS-1, and the long center pipe on the gas-liquid distribution plate extends downward to the middle of the bed. The second catalyst bed is filled with FZC-102B and FH-40C. The properties of raw oil are shown in Table 1, and the process conditions and product properties after 100 days of operation are shown in Table 2.
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Abstract
The invention provides a process method for prolonging the operation period of a hydrogenation device. A gas and liquid distribution disc is arranged on the top of a catalyst bed layer of a hydrogenation reactor, conventional gas and liquid distributors and standby bubble cap type gas and liquid distributors are arranged on the gas and liquid distribution disc, the standby bubble cap type gas and liquid distributors and the conventional gas and liquid distributors are distributed at intervals, the standby bubble cap type gas and liquid distributors are provided with long center pipes, the long center pipes downward extend into the top catalyst bed layer of the hydrogenation reactor, bubble caps are arranged at the upper parts of the long center pipes, in addition, gaps for flowing materials are formed between the bubble caps and the long center pipes, and the tops of the long center pipes are sealed by pressure blasting films. The method has the advantages that great change on the existing device is not needed, the long-period operation of the device can be realized under the condition of low investment, in addition, catalysts of the whole bed layer are sufficiently utilized, simultaneously, the pressure reduction of the reactor is reduced, the production safety is ensured, and the economic benefits are increased.
Description
technical field [0001] The invention relates to a process method for prolonging the operation cycle of a hydrogenation unit, 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 downstr...
Claims
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IPC IPC(8): C10G45/02C10G45/00C10G49/00
Inventor 王喜彬曾榕辉刘建宇孙万付
Owner CHINA PETROLEUM & CHEM CORP
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