Process for viscosity breaking of deoiled asphalt

A technology of visbreaking and deoiling asphalt, which is applied in the direction of cracking, catalytic cracking, non-catalytic thermal cracking, etc., and can solve the problems of increasing costs and expenses

Inactive Publication Date: 2005-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • 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 initiato

Method used

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  • Process for viscosity breaking of deoiled asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw material for solvent deasphalting used in this example is vacuum residue A, and the vacuum residue A is deasphalted with propane to obtain deoiled asphalt, and the yield of deoiled asphalt is 50m%. The properties of vacuum residue A and deoiled bitumen are shown in Table 1 and Table 2, respectively. It can be seen from Table 2 that the kinematic viscosity of deoiled asphalt at 100°C is 5 times that of vacuum residue A, the crackable component saturated hydrocarbon is only 15.4m%, and the colloid is as high as nearly 50m%.

[0027] After the catalytic cracking oil slurry is settled in the settling tank at 150°C for 48 hours, the ash content is reduced by 75%, and the metal aluminum content is reduced by more than 80%. The catalytic cracking clarified oil and the above-mentioned deoiled asphalt were mixed according to the weight ratio of 0.042:1, and then visbreaking was carried out. The visbreaking test was carried out on a medium-sized visbreaking device with a ...

Embodiment 2

[0029] Visbreaking test was carried out after mixing the catalytic cracking decant oil and deoiled asphalt in Example 1 at a weight ratio of 0.087:1. The properties of the mixture of FCC clarified oil and deoiled asphalt are shown in Table 3, and Table 4 shows the visbreaking process conditions and material balance of the mixture. Table 5 shows the properties of the visbroken residue. It can be seen from Table 5 that the viscosity (100°C) of deoiled asphalt has dropped to 118.3mm 2 / s, the effect of reducing viscosity is obvious.

Embodiment 3

[0031] The visbreaking test was carried out after mixing the catalytic cracking decant oil and deoiled bitumen in the weight ratio of 0.111:1 in Example 1. The properties of the mixture of FCC clarified oil and deoiled asphalt are shown in Table 3, and Table 4 shows the visbreaking process conditions and material balance of the mixture. Table 5 shows the properties of the visbroken residue. It can be seen from Table 5 that the viscosity (100°C) of deoiled asphalt has dropped to 105.8mm 2 / s, the effect of reducing viscosity is obvious.

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Abstract

A process for viscosity breaking of deoiled asphalt produced by the apparatus using solvent to remove oil from asphalt features that said deoiled asphalt and the catalytic cracking clean oil (1-50%) are fed in the flow-up viscosity breaking apparatus and a low-temp long-stay operation manner is used. It has high effect on reducing viscosity.

Description

technical field [0001] The invention belongs to a method for non-catalytic thermal cracking of hydrocarbon oil in the absence of hydrogen, more specifically, the invention relates to visbreaking of a heavy residual oil by deoiling bitumen produced by a solvent deasphalting device Methods. Background technique [0002] The visbreaking process is one of the means of lightening heavy oil, and is a special application in the thermal cracking process of heavy residue oil. Its main purpose is to minimize the viscosity of residue oil and reduce the amount of diluted light oil in commercial fuel oil. . Visbreaking of heavy residue oil is a heavy residue oil processing technology in which cracking and condensation thermal reactions in two different directions occur at a certain temperature. The decrease in viscosity is mainly due to thermal cracking of non-asphaltenes. [0003] Solvent deasphalting process is a deep processing process of heavy residue oil with a history of more th...

Claims

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Application Information

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IPC IPC(8): C10G9/16C10G11/00
Inventor 李锐黄伟祈王子军李铮
Owner CHINA PETROLEUM & CHEM CORP
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