Method for directly producing road asphalt by mild cracking super-heavy crude oil

A technology of road asphalt and crude oil, applied in the field of grade road asphalt, which can solve the problems of unsatisfactory, low asphalt flash point, small penetration, etc.

Inactive Publication Date: 2010-03-24
PETROCHINA CO LTD
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Problems solved by technology

However, when the traditional distillation method is used to produce high-grade road asphalt, due to its light and medium components, the produced asphalt has a low flas

Method used

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  • Method for directly producing road asphalt by mild cracking super-heavy crude oil
  • Method for directly producing road asphalt by mild cracking super-heavy crude oil
  • Method for directly producing road asphalt by mild cracking super-heavy crude oil

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Embodiment 1-5

[0013] Table 1 lists the ultra-heavy crude oil produced in Liaohe Oilfield as raw material. figure 1 Under the technological process, the experimental results were carried out according to the conditions of different temperatures and residence times in the above description. The table lists the main properties of super-heavy crude oil after shallow cracking and the main properties of high-grade road asphalt produced after distillation. . Table 2 lists the properties of the products produced by this technology in industrial plants. Compared with the requirements of GB / T15180, they fully meet the technical requirements of high-grade road asphalt.

[0014] Table 1 Laboratory research example of direct production of high-grade road asphalt by shallow cracking of ultra-heavy crude oil in Liaohe

[0015]

[0016]

[0017] Table 2 Industrial application examples and national standards of direct production of high-grade road asphalt by shallow cracking of ultra-heavy crude oil ...

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Abstract

The invention discloses a method for directly producing high-grade road asphalt by super-heavy crude oil, comprising the following steps: the super-heavy crude oil is heated by a heat exchanger and then enters a dehydrating tower, then enters a heating furnace after a small amount of water-containing gasoline is separated by the dehydrating tower; after being heated to 380-430 DEG C, the super-heavy crude oil is heated by the heating furnace, then enters a mild-cracking reactor and stays in the reactor for 20-120min; the viscosity of the super-heavy crude oil is controlled to be 100-600mm<2>/sat 100 DEG C after mild cracking; and the super-heavy crude oil after mild cracking enters a distillation tower, the temperature is controlled at 410-430 DEG C to separate gasoline, diesel oil and gas oil, and then the high-grade road asphalt is obtained. The yield of light weight oil is increased to 18%, the flash point of asphalt is enhanced to 245 DEG C, the evaporation of asphalt is reduced by 0.8%, the paradox between small needle penetration and high soft softening point of asphalt can not occur again, and all performance indexes of asphalt can meet GB/T15180 index.

Description

Technical field: [0001] The invention relates to a method for directly producing high-grade road asphalt for roads from super-thick crude oil in the petroleum refining process. Background technique: [0002] Super thick crude oil refers to the density of 980 ~ 1010kg / m 3 At the same time, heavy crude oil with high viscosity is mainly produced in Liaohe Oilfield in China, and the heavy oil produced by other oilfields does not have this crude oil property. Ultra-heavy crude oil belongs to low-sulfur inferior naphthenic crude oil, which has obvious characteristics such as large specificity, high viscosity, high acid value, high content of colloid and asphaltene, high content of residual carbon and metal impurities, and basically does not contain gasoline in the composition of crude oil , only contains a small amount of diesel oil, and more than 90% of the residual oil belongs to asphalt substances, but it does not meet the national standards or industry standards of various as...

Claims

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Application Information

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IPC IPC(8): C10C3/02
Inventor 黄鹤刘海澄孙丽年成春王春江马作侠刘艳清汪太龙王宏德
Owner PETROCHINA CO LTD
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