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Method for producing asphalt for high grade road

A technology of road asphalt and production method, which is applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, processing tar asphalt/petroleum asphalt/natural asphalt by selective extraction, and petroleum industry, and can solve the problem of reducing the wax content of asphalt blending components Content, poor applicability and other problems, to achieve the effect of optimizing operation, solving the problem of operating rate and improving yield

Inactive Publication Date: 2007-10-03
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
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Problems solved by technology

However, this method does not propose measures to reduce the wax content of the two asphalt blending components, so it is less applicable to paraffin-intermediate base, intermediate-paraffinic base and intermediate base crude oil with higher wax content

Method used

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  • Method for producing asphalt for high grade road
  • Method for producing asphalt for high grade road

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0034] The mixed vacuum residue A with the blending ratio of Zhongyuan crude oil (paraffin base) and Oman crude oil (intermediate base) at a blending ratio of 30:70 (weight) enters the first-stage mixer 31 together with the circulating gum B, where it is fully mixed, and then beaten The diluent butane C, which accounts for 16% of the total solvent weight, enters the secondary mixer 32 for thorough mixing, and then the main solvent D, which accounts for 70% of the total solvent weight, is injected, and the temperature is controlled to 115°C. The lower part of 34 is driven into the sub-solvent butane G, which accounts for 14% of the total solvent weight, and the continuously sinking asphalt phase is further extracted on the tray to reduce the wax content of the asphalt phase. The butane solvent is used throughout the extraction process. The volume ratio of (dilution solvent + main solvent + auxiliary solvent) to vacuum residue is 8:1. The bitumen solution extracted from the bottom o...

Embodiment 3

[0043] The mixed vacuum residue A with the mixing ratio of Zhongyuan crude oil (paraffin base) and Oman crude oil (intermediate base) at a blending ratio of 40:60 (weight) enters the first-stage mixer 31 together with the circulating gum B, where it is fully mixed, and then beaten Into the diluent solvent butane C accounting for 8% of the total solvent weight enters the secondary mixer 32 for thorough mixing, and then enters the main solvent D accounting for 80% of the total solvent weight, and the temperature is controlled to 112°C. From the asphaltene extractor 34 The as-solvent butane G, which accounts for 12% by weight of the total solvent, is injected into the lower part of the solvent, and the continuously sinking asphalt phase is further extracted on the tray to reduce the wax content of the asphalt phase. The butane solvent ( The volume ratio of dilution solvent + main solvent + auxiliary solvent) to vacuum residue is 6:1. The bitumen solution extracted from the bottom of ...

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Abstract

This invention belongs to petrochemical industry technology. This production method of high order road asphalt is broke into three steps: vacuum residuum hand led by butane deasphalt craft, obtain high softening point, low waxen oil removing uintahite as hard component of pitch adjustment; carry out topping hand le(namely decompression fractionation) to catalytic cracking oil, obtain high flash point, low waxen topping heavy oil slurry as low-energy component of pitch adjustment; carry out on-line concoction to oil removing uintahite and topping heavy oil slurry, obtain high order road asphalt. This invention mostly utilize butane oil removing uintahite of paraffin - intermediate base or middle -paraffin base commingled crude oil, and sixpenny catalytic cracking topping heavy oil slurry to high order road asphalt, enlarge crude resources of road asphalt production, advance start work of butane deasphalt unit.

Description

Technical field [0001] The invention belongs to petrochemical technology and mainly proposes a method for producing high-grade road asphalt. Background technique [0002] The quality of road asphalt is closely related to the nature of crude oil. Generally speaking, the wax content of naphthenic and intermediate base crude oils is relatively low. Using traditional distillation, oxidation, blending and their combination methods, high-quality road asphalt can be produced; while for paraffin base crude oil, because It contains a lot of wax, and it is impossible to produce qualified road asphalt using traditional methods. [0003] my country is a country dominated by paraffin-based crude oil. Paraffin-based crude oil accounts for more than 80% of the total crude oil output. Crude oil resources suitable for the production of road asphalt (especially high-grade road asphalt) are limited. Since the 1980s, as the nature of crude oil has continued to heavier and deteriorate, butane deaspha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/00C10C3/08
Inventor 赵振辉任满年杨书显柴志杰杨志强黄建林李中新陈卫平王正岳利梅
Owner CHINA PETROLEUM & CHEM CORP
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