Fouling basket and hydrogenation technological method for reducing skimming of catalyst
A catalyst and catalyst bed technology, applied in chemical instruments and methods, petroleum industry, chemical/physical processes, etc., can solve the problems of reaction material passing, reactor pressure drop, etc., to increase the operation cycle, improve the fouling capacity, The effect of prolonging the effective time of action
Active Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, when the ordinary fouling basket is blocked, the reaction material cannot pass through, causing the pressure drop of the reactor to be too high
Method used
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Embodiment 1
[0034] 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 a fouling basket with a pressure burst membrane overflow pipe is set in the middle of the first catalyst 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 4 months of operation are shown in Table 2.
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Abstract
The invention discloses a fouling basket and a hydrogenation technological method for reducing the skimming of a catalyst. The fouling basket which runs through a whole catalyst bed layer is adopted; a partition plate is arranged at the middle and the bottom of the fouling basket; an overflow pipe is welded on each partition plate; a pressure rupture film is arranged at the top of each overflow pipe; and the bottoms of the overflow pipes are communicated with the lower part of the fouling basket or a gas-liquid distribution disk of a next catalyst bed layer through the partition plates. The rupture differential pressure of the pressure rupture films is lower than 0.45 MPa and higher than 0.1 MPa. With the adoption of the fouling basket and the hydrogenation technological method, when the upper part of the catalyst bed layer is subjected to coking or blockage, the shutdown of a device for the skimming is not needed, and the catalyst at the lower part of the bed layer can also be maximally utilized, so that the waste is reduced.
Description
technical field [0001] The invention relates to a fouling basket for reducing catalyst skimming and a hydrogenation process, 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): B01J8/02C10G45/04C10G45/00C10G49/02
Inventor 王喜彬孙万付刘建宇曾榕辉
Owner CHINA PETROLEUM & CHEM CORP