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Combined technique for processing heavy oil

A combined process, heavy oil technology, applied in the direction of selective solvent extraction tar processing, only multi-stage series refining and cracking process treatment, etc., to achieve the effect of reducing wax content, improving quality and increasing yield

Inactive Publication Date: 2007-10-10
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to propose a combination process for heavy oil processing, which organically combines solvent deasphalting process, catalytic cracking process, catalytic cracking oil slurry topping process, visbreaking and asphalt blending process to overcome the shortcomings of a single processing process , optimize the properties of raw materials, realize the mutual supply of raw materials, and improve the added value of products and the overall efficiency of heavy oil processing

Method used

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  • Combined technique for processing heavy oil
  • Combined technique for processing heavy oil
  • Combined technique for processing heavy oil

Examples

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Embodiment 2

[0060] Solvent deasphalting process: blending the mixed vacuum residue A of Zhongyuan crude oil (paraffin base) and Oman crude oil (intermediate base) with a blending ratio of 30:70 (by weight), first with the circulating gum B from the bottom of the gum settler Mix in primary mixer 31, then mix in secondary mixer 32 with dilute solvent butane C that accounts for 16% of total solvent weight, then mix with main solvent D that accounts for 70% of total solvent weight in tertiary mixer 33 After mixing in the medium, enter the asphaltene extractor 34 for liquid phase extraction and sedimentation separation, and use the temperature control valve to control the temperature at 115 ° C; the stream drawn from the top of the extractor enters the deasphalted oil desolvent treatment unit 37, The deasphalted oil F is obtained after the solvent butane is separated by flash evaporation and stripping. In order to make the extraction more thorough, inject from the bottom of the asphaltenes ext...

Embodiment 3

[0080] Solvent deasphalting process: blending the mixed vacuum residue A of Zhongyuan crude oil (paraffin base) and Oman crude oil (intermediate base) with a blending ratio of 40:60 (by weight), first with the circulating gum B from the bottom of the gum settler Mix in primary mixer 31, then mix in secondary mixer 32 with dilute solvent butane C that accounts for 8% of total solvent weight, and then mix with main solvent D that accounts for 80% of total solvent weight in tertiary mixer 33 After mixing in the medium, enter the asphaltene extractor 34 for liquid phase extraction and sedimentation separation, and use the temperature control valve to control the temperature at 112 ° C; the stream drawn from the top of the extractor enters the deasphalted oil desolvent treatment unit 37, The deasphalted oil F is obtained after the solvent butane is separated by flash evaporation and stripping. In order to make the extraction more thorough, inject the secondary solvent butane G acco...

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Abstract

This invention relates to a process for processing heavy oil. The process comprises: removing asphalt from vacuum residual oil by butane deasphalting to obtain asphalt-free oil and oil-free hard asphalt, mixing asphalt-free oil with one or two of atmospheric residual oil and vacuum wax oil, catalytically pyrolyzing to obtain light hydrocarbons, gasoline and diesel oil with high added values, vacuum-distilling residual oil slurry to obtain light oil slurry and tapped heavy oil slurry, mixing light oil slurry with part of oil-free hard asphalt, pyrolyzing to obtain 7# commercial fuel oil, and adequately mixing tapped heavy oil slurry with the other part of oil-free hard asphalt in a static mixer to obtain advanced petroleum asphalt for road construction.

Description

technical field [0001] The present invention relates to heavy oil processing technology, and mainly proposes a heavy oil processing combined process, which is composed of five processing processes: solvent deasphalting process, catalytic cracking process, catalytic cracking oil slurry topping process, visbreaking process and asphalt blending process A heavy oil processing combination process for more efficient processing of heavy oil. Background technique [0002] The secondary processing of heavy oil (especially vacuum residue) has always been a subject of concern and research, and the choice of processing technology has an important impact on the economic benefits of refineries. At present, the secondary processing methods of heavy oil mainly include: blending as raw material for catalytic cracking; solely as raw material for coking unit or visbreaking unit; producing bitumen through vacuum deep drawing or semi-oxidation. Due to the generally high content of residual carb...

Claims

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Application Information

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IPC IPC(8): C10G55/06C10C1/18
Inventor 赵振辉柴志杰任满年李中新杨书显杨志强黄建林
Owner CHINA PETROLEUM & CHEM CORP
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