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Gradation filling method of heavy oil hydrogenation treatment catalyst

A hydrotreating and grading packing technology, which is applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of out-of-sync deactivation of catalysts of different brands and large bed temperature rise, etc.

Active Publication Date: 2016-10-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for effectively controlling the temperature rise of the bed layer and realizing synchronous deactivation of catalysts of different brands in view of the problem that the bed temperature rise of the residual oil hydrotreating catalyst is relatively large and the deactivation of different brands of catalysts is prone to be out of sync. Catalyst loading method for residual oil hydrotreating

Method used

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  • Gradation filling method of heavy oil hydrogenation treatment catalyst
  • Gradation filling method of heavy oil hydrogenation treatment catalyst
  • Gradation filling method of heavy oil hydrogenation treatment catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0056] The first reactor is loaded with protective agents HG1 and HG2 and demetallization catalysts HDM1 and HDM2 from top to bottom, and the volume ratio of the four agents is 1:1:4:4; the second reactor is loaded with desulfurization catalysts HDS1A and HDM2 from top to bottom. HDS2A, the volume ratio of the two agents is 1:1; the third reactor is loaded with denitrification catalysts HDN1A and HDN2A from top to bottom, and the volume ratio of the two agents is 1:1. The volume ratio of demetallization catalyst, desulfurization catalyst and denitrification catalyst is 3:4:3. The above-mentioned protective agent and catalyst are all independently developed by China Petroleum and Petrochemical Research Institute. The catalyst carrier is alumina, and the supported metals are nickel and molybdenum. The properties are shown in Table 1. The operating conditions of the device are as follows: the inlet temperature of the first reactor is 380°C, and the volume ratio of hydrogen to oil...

Embodiment 2

[0061] The first reactor is filled with protective agents HG1 and HG2 and demetallization catalysts HDM1 and HDM2 from top to bottom, and the volume ratio of the four agents is 1:1:4:4; the second reactor is loaded with desulfurization catalysts HDS3A and HDS3A from top to bottom. HDS4A, the volume ratio of the two agents is 1:1; the third reactor is loaded with denitrification catalysts HDN3A and HDN4A from top to bottom, and the volume ratio of the two agents is 1:1. The volume ratio of demetallization catalyst, desulfurization catalyst and denitrification catalyst is 3:4:3. The above-mentioned protective agent and catalyst are all independently developed by China Petroleum and Petrochemical Research Institute. The catalyst carrier is silicon oxide, and the supported metals are nickel and molybdenum. The properties are shown in Table 2. The operating conditions of the device are as follows: the inlet temperature of the first reactor is 300°C, and the volume ratio of hydrogen...

Embodiment 3

[0066] The first reactor is filled with protective agents HG1 and HG2 and demetallization catalysts HDM1 and HDM2 from top to bottom, and the volume ratio of the four agents is 1:1:4:4; the second reactor is filled with desulfurization catalysts HDS5A and HDS6A, the volume ratio of the two agents is 1:1; the third reactor is filled with denitrification catalysts HDN5A and HDN6A from top to bottom, and the volume ratio of the two agents is 1:1. The volume ratio of demetallization catalyst, desulfurization catalyst and denitrogenation catalyst is 3:4:3. The above protective agents and catalysts were all developed by China Petroleum and Petrochemical Research Institute. The catalyst carrier is alumina-silicon oxide, and the supported metals are cobalt and tungsten. The properties are shown in Table 3. The operating conditions of the device are: the inlet temperature of the first reactor is 490°C, the volume ratio of hydrogen to oil is 800:1; the inlet temperature of the second re...

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Abstract

A gradation filling method of a heavy oil hydrogenation treatment catalyst. A reaction system includes two or more hydrogenation reactors connected in series. From the second reactor, the activity and probable pore size of the catalyst are both gradually decreased according to the sequence of contact with a reaction material flow in the same reactor. Between two adjacent reactors, according to the sequence of contact with the reaction material flow, the activity of the catalyst at the bottom of one reactor is lower than that at the top of the next one reactor, and the probable pore size of the catalyst at the bottom of one reactor is not more than that at the top of the next one reactor. Meanwhile, the activity of the catalyst at the bottom of one reactor is lower than that at the bottom of the next one reactor, and the probable pore size of the catalyst at the bottom of one reactor is large than that at the top of the next one reactor.

Description

technical field [0001] The method belongs to a gradation filling method for heavy oil hydrotreating, and more specifically, is a series reaction system of multiple reactors suitable for processing high-sulfur heavy oil. Background technique [0002] In the fixed-bed residue hydrotreating technology, major companies in the world use catalyst grading and packing technology, that is, two or more catalysts with different functions are used, including hydrogenation protective agent, hydrodemetallization catalyst, For hydrodesulfurization catalysts, hydrodenitrogenation catalysts, etc., the filling sequence is generally to use the feedstock oil to contact the hydroprotectant, hydrodemetallization, hydrodesulfurization, and hydrodenitrogenation catalysts in sequence. The graded packing of the catalyst can not only increase the fouling capacity of the catalyst bed, but also can significantly reduce the pressure drop of the catalyst bed; the use of catalyst graded packing technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04
Inventor 范建光赵愉生胡长禄崔瑞利周志远谭青峰赵元生于双林张春光程涛张志国刘佳澎王燕由慧玲
Owner PETROCHINA CO LTD
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