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Conversion method for hydrogenation of heavy and residual oil suspension bed

A hydrogenation conversion and suspension bed technology, applied in the petroleum industry, refined hydrocarbon oil, etc., can solve the problems of long-term operation of unfavorable reactions, difficulty in uniform dispersion, inability to fully contact, etc., to eliminate local non-hydrogenation reaction states, improve Catalytic efficiency, solving the effect of not being able to run stably for a long period of time

Active Publication Date: 2009-05-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, for the suspended bed technology, since the reactor is mainly an empty cylinder structure, the gas and liquid phases of the reaction materials are not easy to disperse evenly. The two phases cannot be fully contacted, and the raw material of the heavy oil in the liquid phase is in a partial non-hydrogen reaction state, which is prone to side reactions such as coking, which is not conducive to the stable long-term operation of the reaction

Method used

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  • Conversion method for hydrogenation of heavy and residual oil suspension bed
  • Conversion method for hydrogenation of heavy and residual oil suspension bed

Examples

Experimental program
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Effect test

Embodiment 1

[0019] In the absence of a dispersed catalyst, a honeycomb structural monolithic reactor was used for testing. The inner wall of the honeycomb was loaded with active metal components such as Ni and Mo. Each liter of honeycomb structure catalyst contained 5g of NiO and MoO 3 12g, the hydrogenation active component is mixed with aluminum hydroxide and coated on the honeycomb structure filler, then dried and roasted. The properties of raw materials are shown in Table 1, and Table 2 is the data obtained after the experiment.

[0020] A cylindrical aluminum oxide-immobilized catalyst honeycomb body with a diameter of 50 mm and a length of 600 cm was selected for testing. Each channel has a diameter of 4 mm and a channel wall thickness of 0.05 mm.

[0021] Table 1 Properties of raw oil

[0022] project Residue 1 Residue 2 Residue 3 Residue 4 Density (20℃), Kg m -3 1002 995 987 978 Sulfur, wt% 4.2 3.5 4.1 2.9 Nitrogen, μg g -1 5899 4214 ...

Embodiment 2

[0026] The diameter of each channel is 6 mm, the wall thickness is 0.2 mm, and the structure and active metal content are the same as those in Example 1. Add a small amount of dispersed catalyst, the dispersed catalyst is the catalyst described in CN97121844.7 embodiment 2, and the add-on is by metal weight.

[0027] Table 3 Example 2 Heavy and Residual Suspension Bed Hydrogenation Results

[0028] Example 2-1 Comparative example 1 2-2 2-3 2-4 raw material Residue 3 Residue 3 Residue 2 Residue 2 Residue 4 Reaction pressure, MPa 12 12 8 10 8 Reaction temperature, °C 435 435 435 438 436 Catalyst addition amount, μg.g -1 50 50 30 30 30 Liquid product distribution, wt% Atmospheric distillate oil 31.50 29.07 43.51 32.60 46.27 Vacuum Distillate 41.40 31.46 40.90 49.04 40.33 tail oil 26.88 39.13 14.70 18.30 12.70 Toluene insoluble matter, wt% 0.12 2.94 0.29 0.06 0.21 ...

Embodiment 3

[0031] The diameter of each channel is 2mm, and the wall thickness is 0.2mm. The structural monolithic packing of the honeycomb structure made of ceramics is used for testing, and no active metal components are included. A small amount of dispersed catalyst was added, and the dispersed catalyst was the same as in Example 2, and the consumption was 50 μg / g.

[0032] Table 4 Example 3 Heavy and Residual Suspension Bed Hydrogenation Results

[0033] Example 3-1 3-2 3-3 3-4 raw material Residue 3 Residue 3 Residue 4 Residue 4 Reaction pressure, MPa 7 8 9 8 Reaction temperature, °C 435 435 438 436 Liquid product distribution, wt% naphtha 3.7 8.5 7.5 4.7 diesel fuel 45.5 47.4 43.57 41.27 wax oil 39.3 38.4 34.15 36.50 tail oil 11.5 5.7 14.78 17.53

[0034] Table 5 Example 2-1 and comparative example 1 reaction product mass comparison

[0035]

[0036] As can be seen from Table 5, ado...

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Abstract

The invention discloses a conversion method of heavy and residual oil suspension bed hydrogenation. The method comprises the steps as follows: a feeding flow containing hydrogen and heavy and residual oil passes through a honeycomb-shaped or similar structure integrated reactor of a hydrogenation catalyst; the linear speed of liquid and gas in a hollow tower is controlled and a taylor flow is formed in the structural integrated reactor; and as the gas and the liquid are uniformly distributed in each passage, better gas-liquid distribution can be formed, the catalytic efficiency of the reactor can be greatly improved, and the running period can be effectively prolonged.

Description

technical field [0001] The invention relates to a conversion method for heavy and residual oil suspended bed hydrogenation. Background technique [0002] With the gradual heavy and inferior quality of crude oil in the world, the demand for light oil increases, so the research on lightening processing technology for inferior and heavy oil products has been paid more attention. In the lightening process of inferior and heavy oil products, the suspended bed technology has become an important research direction due to its advantages of simple process and high conversion rate. Since the suspension bed hydrogenation uses a one-time catalyst or additive, there is no need to consider the problem of catalyst deactivation, so it can process inferior heavy oil with high content of heavy metals, sulfur, nitrogen and high carbon residue value, which has great advantages Superiority. The heavy oil suspension bed hydrogenation process generally uses oil-soluble or water-soluble dispersed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/00
Inventor 刘建锟杨涛胡长禄李鹤鸣贾永忠
Owner CHINA PETROLEUM & CHEM CORP
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