Hydrodesulfurization catalyst grading method

A hydrodesulfurization and catalyst technology, which is applied in refining to remove heteroatoms, etc., can solve the problems of increasing the catalyst loading weight, and achieve the effects of better accommodating mechanical impurities, improving loading ratio, and better material distribution performance.

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, if the performance of the whole reactor is to be improved, the main means can only be to increase the loading weight of the catalyst and improve the loading effect.

Method used

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  • Hydrodesulfurization catalyst grading method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] In this example, the top of the reactor is a catalyst bed with a low bulk ratio, accounting for 10% of the volume of the entire reactor. The ratio of large-diameter catalyst to small-diameter catalyst in the bed is 10:1 by weight, and the packing ratio is 0.993g / cm 3 , the calculated bed porosity is 33.8%.

[0025] The lower part of the reactor is a high heap ratio catalyst bed, accounting for 90% of the entire reactor volume. The ratio of large-diameter catalyst to small-diameter catalyst in the bed is 2:1 by weight, and the packing ratio is 1.042g / cm 3 , the calculated bed porosity is 30.5%.

[0026] The activity evaluation of the catalyst loaded in this example was carried out, and the evaluation results were compared with the evaluation results of the FHUDS-6 catalyst with a diameter of only 2.3 mm (see Comparative Example 1). Based on the hydrodesulfurization activity after 48 hours of operation in Comparative Example 1 as 100%, the relative hydrodesulfurization...

Embodiment 2

[0028] In this example, the top of the reactor is a catalyst bed with a low bulk ratio, accounting for 20% of the volume of the entire reactor. The ratio of large-diameter catalyst to small-diameter catalyst in the bed is 5:1 by weight, and the packing ratio is 1.007g / cm 3 , the calculated bed porosity is 32.9%.

[0029] The lower part of the reactor is a high heap ratio catalyst bed, accounting for 80% of the entire reactor volume. The ratio of large-diameter catalyst to small-diameter catalyst in the bed is 1:1.5 by weight, and the packing ratio is 1.035g / cm 3 , the calculated bed porosity is 31.0%.

[0030] The activity evaluation of the catalyst loaded in this example was carried out, and the evaluation results were compared with the evaluation results of the FHUDS-6 catalyst with a diameter of only 2.3 mm (see Comparative Example 1). Based on the hydrodesulfurization activity after 48 hours of operation in Comparative Example 1 as 100%, the relative hydrodesulfurizatio...

Embodiment 3

[0032] In this example, the top of the reactor is a catalyst bed with a low stack ratio, accounting for 25% of the total reactor volume. The ratio of large-diameter catalyst to small-diameter catalyst in the bed is 4:1 by weight, and the packing ratio is 1.012g / cm 3 , the calculated bed porosity is 32.5%.

[0033] The lower part of the reactor is a high heap ratio catalyst bed, accounting for 75% of the entire reactor volume. The ratio of large-diameter catalyst to small-diameter catalyst in the bed is 1:2 by weight, and the packing ratio is 1.020g / cm 3 , the calculated bed porosity is 32.0%.

[0034]The activity evaluation of the catalyst loaded in this example was carried out, and the evaluation results were compared with the evaluation results of the FHUDS-6 catalyst with a diameter of only 2.3 mm (see Comparative Example 1). Based on the hydrodesulfurization activity after 48 hours of operation in Comparative Example 1 as 100%, the relative hydrodesulfurization activity...

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Abstract

The invention discloses a hydrodesulfurization catalyst grading method, the hydrodesulfurization catalyst grading method is as follows: a hydrogenation reactor comprises at least two catalyst beds, in accordance with the reaction material contact order, an upstream catalyst bed is a low-bulk-ratio catalyst bed, the bulk ratio of a downstream catalyst bed is higher than that of the adjacent upstream catalyst bed, each catalyst bed is loaded with more than two catalysts with different diameters in a grading manner. Compared with a single-diameter catalyst, the physical mixtures have smaller voidage and larger loading bulk ratio, the hydrodesulfurization performance of a whole reaction system can be improved, the operation period is prolonged, on the basis of no addition of fixed investment, production performances of ultra-low-sulfur and low-sulfur clean fuels can be improved in a low cost.

Description

technical field [0001] The invention relates to a gradation method of hydrodesulfurization catalyst. The catalyst gradation system of the invention is suitable for hydrodesulfurization processes of various distillate oils, especially the hydrodesulfurization processes of gasoline, kerosene and diesel oil. Background technique [0002] With the gradual reduction of sulfur content in vehicle fuel oil standards to 50ppm and 10ppm, hydrodesulfurization has become an indispensable way to process inferior raw materials to produce clean fuel. In the process of producing low-sulfur, ultra-low-sulfur clean fuel, the hydrodesulfurization activity of the reaction system determines the economic benefits of the entire hydrodesulfurization process. The activity of the reaction system is affected by various factors such as process conditions, catalyst activity, and material distribution in the reactor. At present, the main ways to produce low-sulfur and ultra-low-sulfur clean fuels inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08
Inventor 杨成敏郭蓉方向晨段为宇姚运海孙进丁莉李扬
Owner CHINA PETROLEUM & CHEM CORP
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