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Combined technologic process for manufacturing petroleum residue

A combined process and residual oil technology, which is applied in the field of residual oil processing combined process, can solve the problems of increasing costs and expenses

Inactive Publication Date: 2004-03-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the start-up period can be extended under moderate conditions, the free radical initiators and chain transfer agents added are all organic compounds, which increases the cost and expense

Method used

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  • Combined technologic process for manufacturing petroleum residue

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Experimental program
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Effect test

Embodiment 1

[0031] The raw material that present embodiment adopts is vacuum residue A, and its property sees 1, and table 2 is the deoiled bitumen property that vacuum residue A obtains after propane deasphalting, and deasphalting oil yield is 50% (weight), It can be seen from Table 2 that the kinematic viscosity of deoiled bitumen at 100°C is 5 times that of vacuum residue A, and the crackable component of saturated hydrocarbon is only 15.40% and the colloid is as high as nearly 50%.

[0032] Trials were carried out on a medium-sized solvent deasphalting unit with a RIPP capacity of 10 kg / h and a visbreaker at 5 kg / h.

[0033] Table 3 shows the visbreaking process conditions, material balance and visbreaking residue properties of the mixture. It can be seen from Table 3 that the viscosity of deoiled asphalt (at 100°C) has dropped to 188.5mm 2 / s, the effect of reducing viscosity is obvious.

Embodiment 2

[0035] The raw material used in this embodiment is vacuum residue B, whose properties are shown in 1. Table 2 shows the properties of deoiled asphalt obtained after deasphalting vacuum residue B with butane. The yield of deasphalted oil is 63% (weight). , as can be seen from Table 2, the kinematic viscosity of deoiled asphalt at 100 ° C is about 10 times higher than that of vacuum residue B, saturated hydrocarbons as crackable components are only 5.2%, and colloids are as high as 52%.

[0036] The tests were carried out on a medium-sized solvent deasphalting unit with a RIPP capacity of 10 kg / h and a mild thermal cracking unit at 5 kg / h.

[0037] Table 3 shows the visbreaking process conditions, material balance and visbreaking residue properties of the mixture. It can be seen from Table 3 that the viscosity of deoiled asphalt (at 100°C) has dropped to 347.9mm 2 / s, the effect of reducing viscosity is obvious.

[0038] Example 1

[0039] Example 1

[00...

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Abstract

A method of processing residual oil. It comprises: after preheating, introducing the raw material into the upper portion of a solvent deasphalting extraction tower, the solvent is introduced into thelower portion of the extraction tower at the predetermined proportion, residual oil and the solvent contacting refluently and extracting, recycling solvent from deasphalted oil containing a great amount of the solvent, deasphalted oil containing a small quality of the solvent is discharged from the bottom of the tower without recycling solvent and enters the heating oven for heating, then entering a fractionating tower, fractionating gases, gasoline and residual oil with reduced viscosity.

Description

technical field [0001] The invention belongs to a non-catalyzed thermal cracking method of hydrocarbon oil in the absence of hydrogen, more specifically, it is a residual oil processing combined process method for increasing the liquid yield of residual oil. Background technique [0002] Solvent deasphalting is an important process for upgrading residual oil. It is a physical liquid-liquid extraction process, and the residual oil is separated according to the basic principle that hydrocarbon solvents have different solubility for each component in the residual oil. Solvent deasphalting adjusts the operating conditions and controls the dissolving power of the solvent used to mainly dissolve saturated hydrocarbons and aromatic hydrocarbons, and remove most of the colloids and asphaltenes in the residual oil. In this way, the deasphalted The oil has the properties of high hydrogen-to-carbon ratio, low carbon residue, and low impurity content, which can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/04
Inventor 李锐申海平王玉章黄伟祈王子军
Owner CHINA PETROLEUM & CHEM CORP
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