Matrix asphalt production method

A production method and technology of base asphalt, which is applied in the direction of distillation processing of tar pitch/petroleum pitch/natural pitch, petroleum industry, and only multi-stage serial refining process, can solve the problems that industrial production is difficult to realize, and achieve reduction Operating severity, ensuring qualification and stability, and improving yield

Active Publication Date: 2015-05-13
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

This method uses vacuum distillation to produce straight-run asphalt, and the cutting temperature reaches above 600°C, which is difficult to realize in industrial production

Method used

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  • Matrix asphalt production method

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Embodiment 1

[0032] Embodiment 1, Tahe crude oil is produced matrix asphalt experiment according to the method of the present invention.

[0033] The properties of Tahe crude oil are shown in Table 1. It can be seen from the table that Tahe crude oil is a heavy intermediate base crude oil with high metal content and residual carbon value, low light oil yield, and its atmospheric residue and vacuum residue Not suitable for catalytic cracking process.

[0034] Table 1 Properties of Tahe crude oil.

[0035] Analysis Project Tahe 2012-1 Heavy Crude Oil API° 18.0 Density (20℃), g / cm 3 0.9434 Kinematic viscosity (50℃), mm 2 / s 360.6 Kinematic viscosity (80℃), mm 2 / s 69.99 Freezing point / ℃ -8 Pour point / ℃ -6 Carbon residue value / wt% 15.00 Ash content / wt% 0.050 Carbon content / wt% 85.76 Hydrogen content / wt% 11.29 Sulfur content / wt% 2.00 Nitrogen content / wt% 0.32 Chlorine content / wt% 0.12 Flash point (...

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Abstract

The present invention discloses a matrix asphalt production method, which comprises that: normal pressure residual oil obtained from normal pressure distillation on raw oil enters a coking main fractionation tower and contacts coking reaction oil gas at the desuperheating section of the coking main fractionation tower, the obtained material falls into the bottom of the coking fractionation tower and is mixed with coking circulating oil, one part of the coking circulating oil is pumped into a pressure reducing distillation tower to carry out pressure reducing distillation, the relatively-light distillate is extracted from the pressure reducing distillation tower, and the pressure reducing tower bottom oil is extracted as the raw material for asphalt production. According to the method of the present invention, the process is short, the process is advanced and reasonable, the high-quality direct distillation asphalt can be significantly increased, the aromatic-rich and wax-poor distillate oil is reduced or is not used to blend the asphalt raw material, and the high-quality matrix asphalt yield increase purpose is achieved.

Description

technical field [0001] The invention belongs to the field of petroleum refining, and in particular relates to a production method of matrix asphalt. technical background [0002] With the deepening of the construction of the global road network, the quality requirements of the road construction industry for road asphalt materials are constantly improving. Especially in recent years, in the construction of high-grade roads with large traffic volume and heavy loads, the demand for high-grade road asphalt is greater and the quality requirements are stricter. [0003] At present, the production processes of high-grade road asphalt at home and abroad mainly include vacuum distillation (deep drawing), solvent deasphalting, asphalt oxidation and asphalt modification, among which the simplest and most economical method is to directly produce high-grade road asphalt by vacuum distillation. Grade road asphalt. However, there are few crude oils in the world that can directly produce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/06C10G7/00
CPCC10G7/00C10G53/02C10G2300/107
Inventor 张龙李经伟王明星王岩
Owner CHINA PETROLEUM & CHEM CORP
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