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Heavy oil hydrotreatment method with effect of improving utilization ratio of catalyst

A technology for hydrogenation and treatment of heavy oil, which is applied in the treatment of hydrocarbon oil, petroleum industry, refining to remove heteroatoms, etc., can solve the problems of small increase in the operation period of the device and the like

Active Publication Date: 2018-05-08
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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  • Heavy oil hydrotreatment method with effect of improving utilization ratio of catalyst
  • Heavy oil hydrotreatment method with effect of improving utilization ratio of catalyst
  • Heavy oil hydrotreatment method with effect of improving utilization ratio of catalyst

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Experimental program
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Effect test

Embodiment 1

[0064] 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

[0070] according to figure 1 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

[0076] 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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PUM

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Abstract

The invention discloses a heavy oil hydrotreatment method with the effect of improving the utilization ratio of a catalyst. Heavy oil feedstock oil saturatedly dissolves hydrogen, then passes througha hydrogenation pretreatment reaction zone and undergoes hydrodemetallization and partial desulfurization reactions, and the reaction effluent saturatedly dissolves hydrogen against, then 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 higher reaction temperature so that the most of the metal impurities in the material areremoved 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 metaldeposition 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 hydrotreating 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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IPC IPC(8): C10G45/02
CPCC10G45/02C10G2300/202
Inventor 吴锐韩照明刘涛吴长安黄新露王永庆付涛徐加龙冷冬
Owner CHINA PETROLEUM & CHEM CORP