Catalytic conversion method for preparing light fuel oil and propylene

A light fuel oil, catalytic conversion technology, applied in catalytic cracking, cracking, organic chemistry, etc., can solve the problems of dry gas and coke yield increase, and achieve the reduction of oil slurry yield, increase of operation cycle, and improvement of properties Effect
CN101724431BActive Publication Date: 2012-12-12CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2012-12-12

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Abstract

The invention relates to a catalytic conversion method for preparing light fuel oil and propylene, comprising: leading inferior crude oil to enter a catalytic conversion reactor to be contacted with catalyst and have reaction; separating the reaction product, and obtaining the product containing the propylene, crude gasoline and catalytic wax oil, wherein leading the crude gasoline to enter another catalytic conversion reactor to be contacted with catalytic conversion catalyst to have reaction; treating the catalytic wax oil by hydrotreating or / and solvent extraction; and taking the catalyticwax oil obtained by hydrotreating or / and raffinate oil of the catalytic wax oil as raw material of the catalytic conversion reactor or other catalytic conversion reactors. In the method, after the catalytic wax oil which is obtained by carrying out mild catalytic conversion on the inferior crude oil is treated by hydrotreating or / and solvent extraction, the obtaining catalytic wax oil obtained byhydrotreating or / and raffinate oil contains alkane or cycloparaffin, and is very suitable for catalytic conversion, thus realizing high efficiency utilization of oil resources.
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Description

technical field

[0001] The present invention belongs to the catalytic conversion method of hydrocarbon oil, more specifically, is the method for converting inferior raw material into a large amount of light fuel oil and propylene by the combination of catalytic cracking of hydrocarbon oil and hydrotreating / solvent extraction process. Background technique

[0002] The quality of crude oil is getting worse with the continuous increase of crude oil extraction, mainly manifested in the increase of crude oil density, viscosity, heavy metal content, sulfur content, nitrogen content, colloid and asphaltene content and acid value. At present, the price difference between low-quality crude oil and high-quality crude oil is also increasing with the shortage of oil resources, resulting in more and more attention to low-priced low-quality crude oil extraction and processing methods, that is, to increase as much as possible from low-quality crude oil. The yield of light oil has brought h...

Claims

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