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Bitumen-containing high-quality bitumen and its preparation method

A high-quality, asphalt technology for solvent refining by deasphalting, processing of tar pitch/petroleum pitch/natural pitch, processing of tar pitch/petroleum pitch/natural pitch by mixing fractions, etc.

Active Publication Date: 2011-12-14
SK INNOVATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Additionally, the direct production of high-quality bitumen from vacuum residue suffers from the following drawbacks: Gas oil is used as a feedstock for high value processes such as hydrocracking and fluid catalytic cracking, so operating vacuum distillation units to ensure bitumen quality results in low quality or yields of more expensive vacuum gas oils , which is undesirable

Method used

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  • Bitumen-containing high-quality bitumen and its preparation method
  • Bitumen-containing high-quality bitumen and its preparation method

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Embodiment 1

[0037] The raw material comprising atmospheric residue (AR) and vacuum residue (VR) having the properties shown in Table 1 mixed at a volume ratio of 18:11 was subjected to solvent deasphalting under the conditions shown in Table 2 below, thereby producing deasphalted oil and asphalt. The results are shown in Table 3 below. In order to control the permeability of the bitumen thus produced, a middle distillate vacuum residue was also added to produce bitumen. The properties of the bitumen thus obtained are shown in Table 4 below.

[0038] As can be clearly seen from Table 4, when using asphalt to prepare asphalt, compared with the conventional asphalt prepared from the vacuum residue produced by using a vacuum distillation device, the asphalt prepared by the present invention has a higher content Aromatics and resins and a lower content of saturated compounds, so high-quality bitumen with low wax content and high ductility after film oven test can be produced. Since the bitu...

Embodiment 2

[0046] The raw material containing atmospheric residue and vacuum residue with the properties shown in Table 1 mixed in a volume ratio of 18:11 was subjected to solvent deasphalting under the conditions shown in Table 5 below to obtain deasphalted oil and asphalt . The results are listed in Table 6 below. The bitumen so produced is blended with vacuum residue and then with middle distillate vacuum residue to control its permeability to produce bitumen. The properties of the bitumen thus obtained are listed in Table 7 below.

[0047] From Table 7 it is evident that bitumens made using asphalt demonstrate better ductility after film oven testing than bitumens made from vacuum residue under the same permeability conditions.

[0048] Table 5 Conditions for solvent deasphalting: 70% asphalt

[0049] Feed AR / VR (18 / 11 volume ratio) solvent propane Asphalt yield, wt% 70 Pressure, kg / cm 2 gram 45.7 Asphaltenes separator temperature 88

[0...

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Abstract

A high quality asphalt containing pitch is generated as a by-product in a solvent deasphalting process and a method of preparing the same. The pitch is obtained by subjecting a mixture comprising a first vacuum residue and a first petroleum distillate, which is lighter than the vacuum residue and has high amounts of aromatic and resin, to solvent deasphalting. The operation conditions of the solvent deasphalting process are appropriately controlled, such that aromatic and resin components contained in the atmospheric residue and vacuum residue can be distributed to the pitch, and as well, a saturate can be removed.

Description

technical field [0001] The present invention relates generally to high quality asphalt containing pitch produced as a by-product of a solvent deasphalting process, and more particularly to wax content and after film oven testing, and methods for its preparation ductility to obtain improved high-quality bitumen by mixing conventional vacuum resid with bitumen of controlled chemical composition, by using a solvent deasphalting and petroleum distillates similar to atmospheric residues, the invention also relates to a process for the preparation of said high quality bitumen. Background technique [0002] According to use such as figure 1 The conventional method for preparing bitumen in a vacuum distillation unit shown is to carry out vacuum distillation treatment on the atmospheric residue obtained by using a crude oil distillation unit to separate a vacuum residue with controlled permeability, and then the vacuum residue directly into asphalt. [0003] The bitumen thus produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C3/00
CPCC10G2300/44C10C3/00C10G2300/4025C10G21/003C10G2300/1074C10G2300/1077C10G2300/107C10C3/005
Inventor 刘益相金明俊车淳万金奎泰金哲中金基炳朴城範黄润萌
Owner SK INNOVATION CO LTD
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