High quality asphalt containing pitch and preparing method thereof

A high-quality asphalt technology, applied in the direction of solvent refining through deasphalting, processing of tar pitch/petroleum pitch/natural pitch, processing of tar pitch/petroleum pitch/natural pitch through mixed fractions, etc., can solve the problem of vacuum gas oil quality or Problems such as low yield and negative impact on economic benefits

Active Publication Date: 2008-07-23
SK INNOVATION CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the price of crude oil accounts for a large portion of the refinery process costs, it may have an undesired negative impact on economics
[0005] In addition, the direct production of high-quality bitumen from vacuum residue suffers from the disadvantage that the vacuum gas oil produced together with the vacuum residue is used in high-value processes such as hydrocracking and Catalytic cracking) raw materials, so when operating the vacuum distillation unit to ensure the quality of bitumen, the quality or yield of the more expensive vacuum gas oil will be very low, which is undesirable.

Method used

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  • High quality asphalt containing pitch and preparing method thereof

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Effect test

Embodiment 1

[0034] A raw material containing atmospheric residue (AR) and vacuum residue (VR) 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 2 below to prepare Get deasphalted oil and asphalt. The results are shown in Table 3 below. In order to control the permeability of the asphalt prepared in this way, a middle distillate vacuum residue is also added to prepare the asphalt. The properties of the asphalt thus prepared are shown in Table 4 below.

[0035] It can be clearly seen from Table 4 that when asphalt is used to prepare asphalt, the asphalt prepared from the asphalt of the present invention has a higher content than conventional asphalt prepared from vacuum residue produced by a vacuum distillation device. Aromatic compounds and resins and a lower content of saturated compounds, so it is possible to produce high-quality asphalt with low wax content and high film oven test ductility. Since ...

Embodiment 2

[0043] The raw materials containing the normal pressure residue oil and the vacuum residue oil having the properties shown in Table 1 mixed in a volume ratio of 18:11 were 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 asphalt thus prepared is mixed with vacuum residue, and then mixed with middle distillate vacuum residue to control its permeability to prepare asphalt. The properties of the asphalt thus prepared are listed in Table 7 below.

[0044] It can be clearly seen from Table 7 that it is proved that the ductility of asphalt made from asphalt after thin film oven test is better than that of asphalt made from vacuum residue under the same permeability conditions.

[0045] Table 5 Conditions for solvent deasphalting: 70% asphalt

[0046] Feed

AR / VR (18 / 11 volume ratio)

Solvent

Propane

Asphalt yield, wt%

70

Pressure, kg / c...

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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 generally relates to high-quality asphalt containing pitch, which is prepared as a by-product of a solvent deasphalting process, and more specifically, the present invention relates to wax content and film oven testing The ductility of an improved high-quality bitumen is obtained by mixing conventional vacuum residue with asphalt, which has a controlled chemical composition, by using a solvent deasphalting device, which is composed of atmospheric residue Prepared from a mixture of petroleum distillate similar to atmospheric residue, the present invention also relates to a method for preparing the high-quality asphalt. Background technique [0002] According to the conventional method of preparing asphalt using the vacuum distillation device as shown in Fig. 1, the atmospheric residue produced by the crude oil distillation device is subjected to vacuum distillation treatment to separate the vacuum residue with controlled permeability, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/00
CPCC10G2300/1077C10C3/00C10C3/005C10G2300/4025C10G2300/44C10G21/003C10G2300/107C10G2300/1074
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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