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Loading method of hydroprocessing catalyst

A catalyst and catalyst bed technology, used in refining to remove heteroatoms, etc., can solve the problems of easy coking, large bed temperature rise, low hydrogen partial pressure, etc. The effect of the pressure drop rising too fast

Inactive Publication Date: 2006-06-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high bed temperature rise, low hydrogen partial pressure, and easy coking of high activity catalyst bed in residue oil hydrotreating, a residue oil that effectively controls bed temperature rise, reduces cold hydrogen volume, and prolongs catalyst service life is provided. Hydrotreating catalyst loading method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]On a test device with three reactors of 3 liters, a full range of residual oil hydrotreating catalysts developed by Fushun Petrochemical Research Institute was used for testing. The upper inert bed of each reactor is made of inert ceramic rings, and the lower inert bed is made of inert alumina balls and ceramic rings. The loading conditions of the catalysts in each reactor are as follows: one reverse is filled with CEN-2, CEN-4, FZC from top to bottom -16, CEN-5, CEN-6, the filling ratio (V) is: 1: 1.5: 2.2: 2.4: 13; ZTS01, ZTS02 are loaded from top to bottom with the second-pass, and the filling ratio volume is 1: 1; The catalysts ZTN-01 and A are loaded from top to bottom, the filling volume ratio of the two is 70%:30%, and the filling volume ratio of the three reactors is 45:20:35. The above-mentioned inert ceramic rings, inert alumina balls, CEN-2, CEN-4, FZC-16, CEN-5, and CEN-6 catalysts are produced by the pilot base of Fushun Petrochemical Research Institute, ZTS...

Embodiment 2

[0026] On a test device with three reactors of 3 liters, the same catalyst, standard test conditions, and raw oil evaluation test as in Example 1 were adopted. The loading of catalysts for the first and second reverses is the same as in Example 1; the catalysts ZTN-01 and A are loaded for the three reverses from top to bottom, and the loading volume ratio of the two is 60%:40%. The filling volume ratio of the three reactors is 45:20:35. After 1000 hours, 2000 hours, and 3000 hours of stable operation of the residual oil, the device was tested with the raw material oil in Table 2 under the operating conditions of Example 1, and the test results are shown in Table 4.

[0027] running time, h

Embodiment 3

[0029] On a test device with three reactors of 3 liters, the same catalyst, standard test conditions, and raw oil evaluation test as in Example 1 were adopted. The loading of catalysts for the first and second reverses is the same as in Example 1; the catalysts ZTN-01, B, and C are loaded for the three reverses from top to bottom, and the volume ratio of the three is 40%:30%:30%. The catalyst loading volume ratio of the three reactors is 45:20:35. After 1000 hours, 2000 hours, and 3000 hours of stable operation of the residual oil, the device was tested with the raw material oil in Table 3 under the operating conditions of Example 1, and the test results are shown in Table 5.

[0030] running time, h

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Abstract

The invention discloses a loading method of residual oil hydrotreating catalyst, which is different from the gradation loading scheme of conventional catalysts. The activity of the hydrodenitrogenation catalyst is slightly lower than that of the adjacent upstream hydrodenitrogenation catalyst, and the pore size is slightly larger than the latter. The filling method can effectively control the temperature rise of the hydrodenitrogenation catalyst bed; reduce the amount of cold hydrogen and reduce the hydrogen consumption of the device; slow down the carbon deposition speed of the catalyst bed and reduce the bed pressure drop; prolong the life of the catalyst service life.

Description

technical field [0001] The invention relates to a loading method of a hydrogenation treatment catalyst, in particular to a filling method of a high-activity heavy oil hydrogenation treatment catalyst, and the filling method is especially suitable for a fixed-bed hydrogenation treatment process of heavy oil. Background technique [0002] As we all know, the most widely used and mature technology for residual oil hydrotreating in industry is fixed bed. In fixed-bed residual oil hydroprocessing technology, major companies in the world such as UOP, Chevron, United Oil, IFP, etc. all use catalyst graded packing technology, that is, use two or more catalysts with different functions, including adding Hydrogen protection agent, hydrodemetallization catalyst, hydrodesulfurization catalyst, hydrodenitrogenation catalyst, etc., the loading sequence is generally to make the raw material oil sequentially mix with hydrogenation protection agent, hydrodemetallization, hydrodesulfurization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/04
Inventor 韩照明蒋立敬胡长禄耿新国彭派卢宏杰
Owner CHINA PETROLEUM & CHEM CORP
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