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Method for treating inferior residual oil by combined process

A combined process, inferior technology, applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., can solve problems such as complex operation

Active Publication Date: 2019-11-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can prolong the stable operation period of the device, but the operation of this method is more complicated

Method used

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  • Method for treating inferior residual oil by combined process
  • Method for treating inferior residual oil by combined process
  • Method for treating inferior residual oil by combined process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] 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 hydrogen mixing tank 6 , a reactor 3 , a hydrogen mixing tank 7 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 hydrotreat...

Embodiment 2

[0088] 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 hydrogen mixing tank 6 , a reactor 3 , a hydrogen mixing tank 7 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 reacto...

Embodiment 3

[0091] 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 hydrogen mixing tank 6 , a reactor 3 , a hydrogen mixing tank 7 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 4:5 : 1. Catalyst B and Catalyst C are installed in the reactor 3 of the hydroproce...

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Abstract

The invention discloses a method for treating inferior residual oil by a combined process. The method includes the steps that after heavy oil raw oil is saturated and dissolved in hydrogen, firstly, hydrodemetallization and partial desulfurization are carried out in a hydrotreating pretreatment area; the reaction effluent is saturated and dissolved in hydrogen again and then enters a hydrotreatingreaction area for hydrodesulfurization and hydrodenitrification; the reaction temperature in the hydrotreating pretreatment reaction area is higher than that in the hydrotreating reaction area. According to the method, the hydrotreating pretreatment reaction area reacts at a higher temperature, most of metal impurities in materials can be removed, so that the deactivation reason of a desulfurization catalyst and / or denitrification catalyst in the hydrotreating reaction area is changed from previous metal deposition and carbon deposition deactivation to only carbon deposition deactivation, further the desulfurization catalyst and denitrification catalyst can be subjected to regeneration treatment after being used a cycle, the operation cycle of a hydrogenation unit is prolonged, and thus the operation efficiency of the unit is increased, and the economy is improved.

Description

technical field [0001] The invention relates to the field of petroleum refining, in particular to a method for treating inferior residue oil by adopting a combined process of residue oil hydrotreating and catalytic cracking. 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 d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02
Inventor 吴锐刘涛韩照明黄新露吴长安
Owner CHINA PETROLEUM & CHEM CORP
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