Method for separating saturated hydrocarbons and aromatic hydrocarbons from lightweight cycle oil

A technology for light cycle oil and aromatics, applied in the preparation of test samples, weighing by removing certain components, etc., can solve problems such as distortion of saturated hydrocarbons and aromatics analysis results, and achieve good technical effects
CN102749262AActive Publication Date: 2012-10-24CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2012-10-24

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Abstract

The invention relates to a method for separating saturated hydrocarbons and aromatic hydrocarbons from lightweight cycle oil to mainly solve a problem of analytic result distortion of the saturated hydrocarbons and the aromatic hydrocarbons in the high-aromatic-hydrocarbon-content lightweight cycle oil in present separation technologies. The method which treats the lightweight cycle oil as an analytic material comprises the following steps: 1, adsorbing the analytic material with an adsorption column of a silica adsorbent I, flushing with an n-pentane solvent I to obtain a solution I, adsorbing through allowing the solution I to enter an adsorption column of an alumina adsorbent II, and flushing with the n-pentane solvent I to obtain a solution II; 2, flushing the adsorption column of the silica adsorbent I with a dichloromethane solvent II to obtain a solution III; 3, flushing the adsorption column II of the alumina adsorbent II with the dichloromethane solvent II to obtain a solution IV; 4, steaming the solution II to remove the n-pentane solvent I, and obtaining the content of the saturated hydrocarbons through a normalization method; and 5, steaming a mixture of the solution III and the solution IV to remove the dichloromethane solvent II, and obtaining the content of the aromatic hydrocarbons through the normalization method. The method well solves the problem through above technical scheme and can be applied to the industrial analysis of the saturated hydrocarbons and the aromatic hydrocarbons in the lightweight cycle oil.
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Description

technical field

[0001] The invention relates to a method for separating saturated hydrocarbons and aromatic hydrocarbons in light cycle oil. Background technique

[0002] Light cycle oil, usually used as a lower quality blended diesel component, is typically blended with straight run diesel. The annual processing capacity of catalytic cracking units in my country has exceeded 68 million tons, and the annual production capacity of LCO has exceeded 10 million tons. The content of sulfur, nitrogen and aromatics in FCC light cycle oil is relatively high, and the cetane number is low, so it cannot be used as a blending component of clean diesel oil, but can only be used as a blending component of fuel oil. However, the demand for fuel oil is relatively small, and how to use catalytic light cycle oil to get the maximum benefit is a growing problem. At present, the demand for aromatics and olefins in the international market is growing even faster than gasoline and diesel. In th...

Claims

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