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A kind of hydrotreating method of hydrocarbon oil

A technology of hydrogenation treatment and hydrogenation pretreatment, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., and can solve problems such as inability to guarantee long-term stable work, lower yield of liquid products, and unsolvable filtration technology. Achieve the effects of avoiding carbon deposition and pressure drop rise, alleviating high temperature carbon deposition inactivation, and reducing reaction temperature

Active Publication Date: 2016-03-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional filtration method can only filter out a part of relatively large solid particle impurities, and it is difficult to control the fine particles of solid particle impurities (such as particle size less than 25μm). If the precision filter is used for high filtration cost and frequent operation, Long-term stable operation cannot be guaranteed, and the filtration technology cannot solve the coking problem caused by olefins, dienes, and aromatics
[0010] CN102191072A proposes to use distillation to reduce the above-mentioned solid particulate impurities, but the distillation process will generate large additional energy consumption, and the yield of liquid products will decrease
However, this method always has a protective reactor offline, and the utilization efficiency of the protective reactor is only 50%, wasting precious reactor space

Method used

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  • A kind of hydrotreating method of hydrocarbon oil
  • A kind of hydrotreating method of hydrocarbon oil
  • A kind of hydrotreating method of hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] In the hydroprocessing unit used in this example, the main hydroprocessing reactor is a preprocessing reactor A, the standby hydroprocessing reactor is a preprocessing reactor B, and the hydroprocessing unit C is a fixed bed hydrogenation unit, such as figure 1 shown.

[0057] The pretreatment reactor A is filled with 30mL of RG-20 catalyst, 30mL of RG-30E catalyst, 30mL of RG-30A catalyst, 30mL of RG-30B catalyst and 30ml of RDM-35 catalyst in sequence, totaling 150mL; the pretreatment reactor B is filled with RG 10mL of -20 catalyst, 10mL of RG-30E catalyst, 10mL of RG-30A catalyst, 10mL of RG-30B catalyst and 10ml of RDM-35 catalyst, totaling 50mL; 30 catalyst 200mL and RN-32V catalyst 600mL, a total of 900mL.

[0058] The properties of coal liquefied oil are shown in Table 1.

[0059] The coal liquefied oil is mixed with hydrogen and enters the pretreatment reactor A, and then enters the fixed-bed hydrogenation unit reactor. The feed rate of coal liquefied oil i...

Embodiment 2

[0077] In the hydroprocessing unit used in this example, the main hydroprocessing reactor is a preprocessing reactor A, the standby hydroprocessing reactor is a preprocessing reactor B, and the hydroprocessing unit C is a fixed bed hydrogenation unit, such as figure 1 shown.

[0078] The pretreatment reactor A is filled with 30mL of RG-20 catalyst, 30mL of RG-30E catalyst, 30mL of RG-30A catalyst, 30mL of RG-30B catalyst and 30ml of RDM-35 catalyst in sequence, totaling 150mL; the pretreatment reactor B is filled with RG 10mL of -20 catalyst, 10mL of RG-30E catalyst, 10mL of RG-30A catalyst, 10mL of RG-30B catalyst and 10ml of RDM-35 catalyst, totaling 50mL; 30 catalyst 200mL and RN-32V catalyst 600mL, a total of 900mL.

[0079] The properties of coal tar are shown in Table 3.

[0080]Coal tar mixed with hydrogen enters the pretreatment reactor A, and then enters the fixed-bed hydrogenation unit reactor. The coal tar feed rate is 254g / h, the hydrogen flow rate is 367L / h, t...

Embodiment 3

[0098] In the hydroprocessing unit used in this example, the main hydroprocessing reactor is a preprocessing reactor A, the standby hydroprocessing reactor is a preprocessing reactor B, and the hydroprocessing unit C is a fixed bed hydrogenation unit, such as figure 1 shown.

[0099] The pretreatment reactor A is filled with 30mL of RG-20 catalyst, 30mL of RG-30E catalyst, 30mL of RG-30A catalyst, 30mL of RG-30B catalyst and 30ml of RDM-35 catalyst in sequence, totaling 150mL; the pretreatment reactor B is filled with RG 10mL of -20 catalyst, 10mL of RG-30E catalyst, 10mL of RG-30A catalyst, 10mL of RG-30B catalyst and 10ml of RDM-35 catalyst, totaling 50mL; 30 catalyst 200mL and RN-32V catalyst 600mL, a total of 900mL.

[0100] The properties of biomass tar are shown in Table 5.

[0101] Biomass tar is mixed with hydrogen and enters pretreatment reactor A, and then enters fixed bed hydrogenation unit reactor. The feed rate of biomass tar is 360g / h, the hydrogen flow rate ...

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Abstract

The invention provides a hydrocarbon oil hydrotreatment method. The method comprises the following steps: a hydrocarbon oil raw material and hydrogen contacts with a plurality of hydrogenation catalyst bed layers in a hydrotreatment device; and a main hydrogenation pretreatment reactor and a standby hydrogenation pretreatment reactor are alternately used, and the online time of the main hydrogenation pretreatment reactor is greater than the online time of the standby hydrogenation pretreatment reactor. The method allows solid particle impurities in inferior hydrocarbon oil to deposit in a hydrogenation pretreatment unit without greatly improving the running energy consumption of the apparatus, reduces the reaction temperature of a subsequent hydrotreatment unit, effectively protects a hydrogenation catalyst at a rear portion, alleviates the high temperature carbon deposit inactivation and prolongs the service cycle of the hydrogenation catalyst.

Description

technical field [0001] The invention relates to a method for hydrotreating hydrocarbon oil. Background technique [0002] The coal liquefaction process (also known as the coal-to-oil process) refers to the process of converting solid coal into liquid fuels, chemical raw materials and other products through chemical processing. According to different processing routes, coal liquefaction can be divided into two categories: direct liquefaction and indirect liquefaction: indirect liquefaction technology is to first gasify all coal into synthesis gas, and then use coal-based synthesis gas (carbon monoxide and hydrogen) as raw materials to catalyze synthesis into Liquid hydrocarbon fuels and other chemical products; direct coal liquefaction is at high temperature (usually above 400°C) and high pressure (usually above 10MPa), under the action of catalysts and solvents, coal molecules are cracked and hydrogenated, and directly converted into liquid hydrocarbons , and then further p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/02C10G65/12
Inventor 牛传峰董凯吴昊戴立顺高晓冬邵志才刘涛邓中活施瑢李猛张毓莹杨清河胡大为孙淑玲
Owner CHINA PETROLEUM & CHEM CORP
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