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Oil sand asphalt treating method

A kind of technology of oil sand asphalt and treatment method, which is applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, only multi-stage serial refining and cracking process treatment, processing tar asphalt/petroleum asphalt/natural asphalt by selective extraction, etc., It can solve the problems of high cost and high processing cost, and achieve the effect of low equipment cost, low operating cost and high investment cost

Inactive Publication Date: 2006-05-24
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] An object of the present invention is to provide a method for processing oil sand asphalt with low processing and pipeline costs in order to overcome the disadvantages of high cost and high processing cost for oil sand asphalt in pipeline transportation in the prior art

Method used

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Examples

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Effect test

Embodiment 1

[0036] This example is used to illustrate the oil sand bitumen treatment method provided by the present invention.

[0037] according to figure 1 In the process shown, the oil sand bitumen is fed to the distillation unit, so that the components in the oil sand bitumen with a boiling point lower than 200 ° C can be directly separated from the oil sand bitumen as components that can be transported by pipeline, and the remaining high boiling point The distillation residue oil enters the visbreaking unit for visbreaking. The visbreaking conditions are temperature of 400°C, pressure of 0.5 MPa, and residence time of 2 hours. The visbroken product enters the light hydrocarbon separation unit for separation , the components with a boiling point lower than 500°C are separated as components that can be transported in pipelines, and the remaining high-boiling heavy components are used as raw materials for solvent deasphalting, using n-butane solvent for contact extraction in the solvent...

Embodiment 2

[0039] This example is used to illustrate the oil sand bitumen treatment method provided by the present invention.

[0040] according to figure 2The process shown feeds the oil sands bitumen to an atmospheric distillation unit to separate the overhead components of the oil sands bitumen with a boiling point below 200°C directly from the oil sands bitumen as components that can be transported by pipeline , then feed the atmospheric residue at the bottom of the tower to the vacuum distillation unit, separate the vacuum overhead oil with a boiling point of 200-500°C and the vacuum residue with a boiling point greater than 500°C, and combine the vacuum residue with The pentane mixed solvent is subjected to contact extraction in the solvent deasphalting unit. The conditions for solvent deasphalting are that the temperature at the bottom of the tower is 150°C, the temperature at the top of the tower is 170°C, the pressure is 5 MPa, and the solvent ratio is 4:1. After deasphalting,...

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Abstract

The invention relates to a process method for oil sand asphalt that includes the steps of taking solvent deasphalt and visbreaking to gain deoiled asphalt that could be transferred by pipeline. The method is easy to operate and the device costs low. It could improve the product yield and increase income. The technology would make recycle sulfur in oil and asphalt easier in the follow-up process and sharply decrease the recycle cost.

Description

technical field [0001] The invention relates to a treatment method for oil sand asphalt, in particular to a treatment method for improving the pipeline transportation performance of oil sand asphalt. Background technique [0002] Oil sand bitumen is essentially a high-viscosity bitumen, with high density (0.97-1.015 g / cm3 under normal temperature and pressure), high viscosity (100000-1000000 cSt at room temperature), high sulfur content, and The carbon content in the average composition is 83.2%, the hydrogen content is 10.4%, the carbon-hydrogen ratio is very high, the viscosity is very high, and it can hardly flow at room temperature. [0003] At present, there are three main methods of mining oil sand bitumen: [0004] 1. Cyclic steam stimulation method: inject high-pressure steam into the oil sand layer and stay there for several weeks. The heat softens the bitumen, the steam dilutes it and separates it from the sand, and the flowable bitumen is pumped to the surface. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/00C10C3/08
CPCC10G1/002C10G55/04
Inventor 郑长波张玉贞何仲文刘强黄惠泽
Owner CHINA NAT OFFSHORE OIL CORP
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