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Method for treating heavy oil by combined process

A combined process and heavy oil technology, which is applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., and 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

However, this method is more complex

Method used

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  • Method for treating heavy oil by combined process
  • Method for treating heavy oil by combined process
  • Method for treating heavy oil by combined process

Examples

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Effect test

Embodiment 1

[0081] 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

[0087] according to figure 1In 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 catal...

Embodiment 3

[0090] 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 4:5 : 1. Catalyst B and Catalyst C are installed in the reactor 3 of the hydroprocessing reaction zone, and the filling volume ratio of t...

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Abstract

The invention discloses a method for treating heavy oil by a combined process. The method for treating the heavy oil by the combined process comprises the following steps: after mixing inferior raw oil with hydrogen, enabling the mixture to pass through a hydrogenation pretreatment zone at first; after separating reaction effluent, enabling the reaction effluent and catalytic cracking circulatingoil to enter a hydrotreating reaction zone; and separating the obtained reaction effluent to obtain hydrogenated residual oil, and carrying out catalytic cracking reaction on the hydrogenated residualoil to obtain circulating oil and / or oil slurry which are recycled to the hydrotreating reaction zone to obtain another part of circulating oil which is recycled to the hydrotreating reaction zone, wherein the reaction temperature t1 of the hydrotreating reaction zone is higher than the reaction temperature t2 of the hydrotreating reaction zone. According to the method, the utilization rate of ahydrotreating main catalyst can be increased, the running period of a combined device is prolonged, and the running efficiency of the device is improved.

Description

technical field [0001] The invention relates to the field of petroleum refining, in particular to a method for treating heavy residue 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 develope...

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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