A method for hydrogenation of heavy oil with improved catalyst utilization

A heavy oil hydrogenation and catalyst technology, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., and can solve the problems such as the small increase in the operating cycle of the device

Active Publication Date: 2020-02-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method does not greatly increase the operating cycle of the device.

Method used

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  • A method for hydrogenation of heavy oil with improved catalyst utilization
  • A method for hydrogenation of heavy oil with improved catalyst utilization
  • A method for hydrogenation of heavy oil with improved catalyst utilization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] according to figure 1 In the process flow, the hydrogenation pretreatment reaction zone includes a switchable first hydrogenation pretreatment reaction zone and a second hydrogenation pretreatment reaction zone, the first hydrogenation pretreatment reaction zone is provided with a reactor 1, and the second hydrogenation pretreatment reaction zone is provided with a reactor 1. A reactor 2 is arranged in the second hydrogenation pretreatment reaction zone, and the hydrogenation treatment reaction zone includes a reactor 3 and a reactor 4 arranged in series. According to the material flow direction, the reactor in the hydrogenation pretreatment reaction zone (only one hydrogenation pretreatment reaction zone is online during operation) is filled with catalyst A, catalyst B and catalyst C, and the loading volume ratio of each catalyst is 2:7 : 1. Catalyst B and Catalyst C are installed in the reactor 3 of the hydrotreating reaction zone, and the loading volume ratio of the...

Embodiment 2

[0069] according to figure 2 In the described process flow, only one hydrogenation pretreatment reaction zone is set, and a reactor 1 is set in this hydrogenation pretreatment reaction zone, and the hydrogenation treatment reaction zone includes reactor 3 and reactor 4 arranged in series, and adding The catalyst loading in the hydrogen pretreatment reaction zone accounts for 36% of the total catalyst loading in the device. According to the material flow direction, catalyst A, catalyst B and catalyst C are filled in the reactor 1 of the hydrogenation pretreatment reaction zone, and the loading volume ratio of the three catalysts is 2:6:2. Catalyst B and catalyst C are housed in hydrotreating reaction zone reactor 3, and the loading volume ratio of two kinds of catalysts is 3: 7, and catalyst C and catalyst D are filled in reactor 4, and the loading volume ratio of two kinds of catalysts is 3: 7. The conditions and test results of reactor hydrotreating are listed in Table 2. ...

Embodiment 3

[0075] according to figure 1 In the process flow, the hydrogenation pretreatment reaction zone includes a switchable first hydrogenation pretreatment reaction zone and a second hydrogenation pretreatment reaction zone, the first hydrogenation pretreatment reaction zone is provided with a reactor 1, and the second hydrogenation pretreatment reaction zone is provided with a reactor 1. A reactor 2 is arranged in the second hydrogenation pretreatment reaction zone, and the hydrogenation treatment reaction zone includes a reactor 3 and a reactor 4 arranged in series. According to the material flow direction, the reactor in the hydrogenation pretreatment reaction zone (only one hydrogenation pretreatment reaction zone is online during operation) is filled with catalyst A, catalyst B and catalyst C, and the loading volume ratio of each catalyst is 3:6 : 1. Catalyst B and catalyst C are housed in hydrotreating reaction zone reactor 3, and the loading volume ratio of two kinds of cata...

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Abstract

The invention discloses a heavy oil hydrogenation method for improving the utilization ratio of a catalyst. After the heavy oil feedstock oil and hydrogen are mixed, the mixture passes through a hydrogenation pretreatment reaction zone and undergoes hydrodemetallization and partial desulfurization reactions, and a liquid separated from the reaction effluent enters a hydrotreatment reaction zone and then undergoes hydrodesulfurization and hydrodenitrogenation reactions, wherein the reaction temperature in the hydrogenation pretreatment reaction zone is higher than the reaction temperature in the hydrotreatment reaction zone. The hydrogenation pretreatment reaction zone has a high reaction temperature so that the most of the metal impurities in the material are removed and the reason of deactivation of the desulfurization catalyst and / or the denitrification catalyst in the hydrotreatment reaction zone is changed into carbon deposition deactivation from metal deposition and carbon deposition deactivation and thus the desulfurization catalyst and the denitrification catalyst can be regenerated after one cycle, the operation cycle of the hydrogenation device is prolonged, the device operation efficiency is increased and economic efficiency is improved.

Description

technical field [0001] The invention relates to the field of petroleum refining, in particular to a heavy oil hydrogenation method for improving catalyst utilization. Background technique [0002] At present, the demand for light and medium oil products in the domestic and foreign oil product markets will continue to rise, while the demand for heavy oil products such as fuel oil will show a downward trend. In addition, due to the increasing pressure of environmental protection, countries have generally raised the quality standard requirements of petroleum products, especially gasoline and diesel products for vehicles. Under the above-mentioned market trend, the refining technology that can not only realize the lightening of heavy oil at a more economical and reasonable price, but also make the obtained products meet the increasingly stringent specifications of gasoline and diesel products has become a key technology developed by domestic and foreign refining technology devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/202
Inventor 吴锐韩照明刘涛葛培忠王军杨大为王镇江战庆杰付涛
Owner CHINA PETROLEUM & CHEM CORP
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