Method for producing gasoline blend component with high octane value by using cracking gasoline heavy fractions

A technology for high-octane gasoline and pyrolysis gasoline, which is applied in hydrocarbon oil cracking, petroleum industry, etc., to achieve the effects of low operating cost, simple process flow, and guaranteed operation cycle.

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is not suitable for the treatment of heavy fractions of pyrolysis gasoline

Method used

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  • Method for producing gasoline blend component with high octane value by using cracking gasoline heavy fractions
  • Method for producing gasoline blend component with high octane value by using cracking gasoline heavy fractions
  • Method for producing gasoline blend component with high octane value by using cracking gasoline heavy fractions

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] pyrolysis gasoline C 9 + Distillate raw material 1 enters the reactor after being contacted with hydrogen, and undergoes hydrofining reaction. The main process conditions are: hydrogen partial pressure 2.6MPa, volume space velocity 4.0h -1 . The reaction temperature is 90° C., the volume ratio of hydrogen to oil is 180:1, and there is no circulation operation. The properties of raw oil and test results are listed in Table 2.

[0027] It can be seen from Table 2 that this technology can effectively improve the stability of the oil, basically no loss of octane number, the actual gum content is less than 5mg / 100mL, and the induction period is more than 480 minutes, which meets the quality index of motor gasoline.

[0028] Table 2 Raw oil properties and test results

[0029]

Embodiment 2

[0031] pyrolysis gasoline C 9 ~C 10 Distillate raw material 2 enters the reactor after being contacted with hydrogen, and undergoes hydrofining reaction. The main process conditions are: hydrogen partial pressure 2.2MPa, volume space velocity 4.5h -1 , The reaction temperature is 98°C, the volume ratio of hydrogen to oil is 200:1, and the volume ratio of circulating oil to fresh raw oil is 0.5:1. The properties of raw oil and test results are listed in Table 3.

[0032] It can be seen from Table 3 that the technology can effectively improve the stability of the oil, basically no loss of octane number, the actual gum content is less than 5mg / 100mL, and the induction period is more than 480 minutes, which meets the quality index of motor gasoline.

[0033] Table 3 Raw oil properties and test results

[0034]

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Abstract

The invention relates to a method for producing a gasoline blend component with a high octane value by using cracking heavy fractions of gasoline. In the method, a single segment double catalyst matching filling process is adopted, materials of cracking gasoline heavy fractions and hydrogen gas are contacted with two hydrogenation catalysts under a milder process condition, reaction products are separated in a separator, hydrogen enriched gas is recycled, and liquid products are the gasoline blend component with a high octane value. The method aims at the cracking gasoline C9+ fractions difficultly treated by petrochemical processing enterprises; and by the process method, the economic benefits are improved, the process flow is simple, the operation is stable, the product quality is better, the investment and operating costs are lower, and the process method is suitable for new building of a hydrogenation plant as well as modification of the old hydrogenation plant.

Description

technical field [0001] The present invention relates to a kind of method of producing high-octane number gasoline blending component from pyrolysis gasoline heavy fraction, specifically with the C of pyrolysis gasoline 9 + (higher than C 9 Fraction, containing C 9 Distillate) The distillate is used as raw material, and under milder hydrogenation conditions, diolefins and gums are selectively removed. The method for improving the stability of products and increasing the yield of high-octane gasoline blending components is suitable for petrochemical enterprises with cracking devices. Background technique [0002] Pyrolysis gasoline heavy fraction generally refers to the by-product pyrolysis gasoline C of hydrocarbon steam cracking ethylene plant 9 + Distillate, the output accounts for about 10% to 15% of the total ethylene output. Because it contains a large amount of alkenyl aromatic hydrocarbons and dienes, the properties of the product are relatively unstable, and it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G47/02
Inventor 徐大海刘继华李扬牛世坤
Owner CHINA PETROLEUM & CHEM CORP
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