A kind of graded packing method of heavy oil hydrotreating 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: 2018-07-13
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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  • A kind of graded packing method of heavy oil hydrotreating catalyst
  • A kind of graded packing method of heavy oil hydrotreating catalyst
  • A kind of graded packing method of heavy oil hydrotreating catalyst

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Experimental program
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Effect test

Embodiment 1

[0056] 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 HDS1A and HDS2A, the volume ratio of the two agents is 1:1; the third reactor is filled 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 denitrogenation catalyst is 3:4:3. The protective agents and catalysts mentioned above 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: the inlet temperature of the first reactor is 380°C, the volume ratio of hydrogen to oil is 800:1; the inlet temperature of th...

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 filled with desulfurization catalysts HDS3A and HDS4A, the volume ratio of the two agents is 1:1; the third reactor is filled 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 denitrogenation catalyst is 3:4:3. The protective agents and catalysts mentioned above 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: the inlet temperature of the first reactor is 300°C, the volume ratio of hydrogen to oil is 800:1; the inlet temperature...

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 loading method for heavy oil hydrotreating catalysts, the reaction system includes two or more hydrogenation reactors in series, starting from the second reactor, in the same reactor, according to the order of contact with the reactant stream , both the catalyst activity and the possible pore size show a decreasing trend; in two adjacent reactors, according to the order of contact with the reactant stream, the activity of the catalyst at the bottom of the former reactor is lower than that of the catalyst at the top of the latter reactor, and the catalyst at the bottom of the former reactor The pore diameter of the catalyst at the top of the latter reactor is not greater than the pore diameter of the catalyst at the top of the latter reactor; at the same time, the activity of the catalyst at the bottom of the former reactor is lower than that of the catalyst at the bottom of the latter reactor, and the pore diameter of the catalyst at the bottom of the former reactor is larger than that of the catalyst at the top of the latter reactor Can be several apertures.

Description

technical field [0001] The method belongs to the gradation loading method of heavy oil hydrotreating, more specifically, it is a series reaction system of multiple reactors suitable for processing high-sulfur heavy oil. Background technique [0002] In the fixed-bed residual oil hydroprocessing technology, major companies in the world use catalyst graded packing technology, that is, use two or more catalysts with different functions, including hydrogenation protecting agent, hydrodemetallization catalyst, For hydrodesulfurization catalysts, hydrodenitrogenation catalysts, etc., the loading sequence is generally to use raw material oil to contact with 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 significantly reduce the pressure drop of the catalyst bed; the use of the catalyst graded packing technology can...

Claims

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Application Information

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Patent Type & Authority Patents(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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