Method for producing light arene product and clean fuel oil product from catalytic cracking diesel oil

A technology for catalytic cracking of diesel oil and light aromatics, which is applied in the fields of hydrocarbon oil cracking, petroleum industry, and hydrocarbon oil treatment. It can solve problems such as difficulty in meeting clean fuel quality requirements, high content of sulfur and nitrogen compounds, and large loss of extraction solvents. Achieve the effects of long operating period of the device, good activity stability, and good adaptability of raw materials
CN103865577BActive Publication Date: 2015-05-27CHINA NAT OFFSHORE OIL CORP +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2015-05-27

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Abstract

The invention discloses a method for producing a light arene product and a clean fuel oil product from catalytic cracking diesel oil. The method is characterized by comprising the following steps: (1) mixing the catalytic cracking diesel oil with hydrogen, mixing with a cracking product and simultaneously performing a hydro-refining reaction so as to remove sulfur and nitrogen impurities, and performing an olefin saturation process and an arene hydrogenation saturation process; (2) catalyzing distillate oil of the diesel oil for cutting after the hydro-refining process is finished, wherein the distillate oil at a temperature greater than 355 DEG C is returned for hydrocracking after being mixed with the hydrogen; (3) extracting the cut distillate oil to obtain extract oil rich in poly-aromatic hydrocarbon and raffinate oil rich in alkane; (4) taking the raffinate oil rich in alkane as a clean diesel oil blending component; (6) cutting and separating an extract oil hydro-cracking product, wherein the distillate oil at a temperature greater than 195 DEG C is taken as the clean diesel oil blending component, and the distillate oil at a temperature less than195 DEG C is utilized to obtain the light arene product and the clean gaseous blending component.
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Description

technical field

[0001] The invention relates to the technical field of petroleum catalytic cracking, in particular to a method for producing light aromatics and clean fuel oil products by utilizing catalytic cracking diesel oil. Background technique

[0002] Under the situation of developing low-carbon economy, circular economy and realizing sustainable development, the pace of upgrading the quality of oil products in China has been significantly accelerated, and the requirements for the content of aromatics in diesel are becoming more and more stringent. The production of clean oil products has become one of the key points in the development of China's oil refining industry. In China's diesel composition, 25-30% is FCC diesel. FCC diesel has the characteristics of high aromatics content (aromatics content > 60%), low cetane number, and its quality is poor. The cost of hydrogen upgrading operation is high, the conditions are harsh, and the increase of cetane number is l...

Claims

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