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Catalyzing and cracking process of inferior oil

A technology of catalytic cracking and processing technology, which is applied in catalytic cracking, cracking, petroleum industry, etc. It can solve the problems of increased unit processing capacity and decreased coke output, and achieve the effect of reducing unit consumption and increasing yield

Inactive Publication Date: 2006-03-15
邓先樑 +4
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  • Claims
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Problems solved by technology

The refined oil is extracted with dual solvents to obtain high-purity heavy aromatics, and the raffinated oil is returned to the catalyst. As a result, the processing capacity of the unit increases and the coke production decreases

Method used

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  • Catalyzing and cracking process of inferior oil

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Embodiment 1

[0024] Example 1 Using the same heavy oil catalytic cracking unit and low-quality oil as in Comparative Example 1, the extraction unit used the newly-built 40,000 tons / year heavy diesel oil aromatics extraction unit of the Petrochemical Group Company, and the solvent extraction was carried out in a rotary tower. The structure of the tower is the same as that of the common rotary table tower for furfural extraction of lubricating oil. The extraction adopts double solvent extraction, the first solvent is wet furfural with water content of 5-8%, and the second solvent is solvent oil with boiling point range between 90-120°C and aromatic content <5%. The heavy diesel oil enters from the bottom of the middle part of the rotary table, the wet furfural enters from the top of the tower, and the second solvent enters from the bottom of the tower. Heavy diesel oil: wet furfural: solvent oil (weight ratio)=1: 0.8: 0.5. Extraction temperature: 80°C at the top of the tower, 65°C at the mi...

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Abstract

A catalytic and cracking process of inferior oil is characterized by catalytic cracking the inferior oil to obtain light diesel fuel cut fraction, returning it to catalytic cracker to recycle, extracting the obtained heavy diesel fuel cut fraction from solvent, extracting residual oil and returning to catalytic cracker to recycle. It has higher recovery rate, better quality and more yield of product. It can be used for various inferior fuel heavy oils, catalytic raw materials, shale oil and coal tar.

Description

technical field [0001] The invention belongs to the technical field of catalytic cracking process for oil raw materials, and in particular relates to a catalytic cracking process for obtaining high value-added products through catalytic cracking of inferior oil products as raw materials. Background technique [0002] The world's demand for oil is increasing, and the processing of low-quality oil raw materials by catalytic cracking units is an inevitable problem. As far as our country is concerned, due to the shortage of crude oil supply, the catalytic cracking units of some refineries use imported heavy fuel oil as the raw material for catalytic cracking, for example, Russian M100 heavy fuel oil is used as the raw material for catalytic cracking. The fuel heavy oil has ultra-low hydrogen content, ultra-high metal content such as Ni, V, Fe, Na, high content of polycyclic aromatic hydrocarbons, high S and N content, high density, high carbon residue value, and is difficult to ...

Claims

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Application Information

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IPC IPC(8): C10G21/16C10G11/00
Inventor 邓先樑袁培林刘松鹤李洪涛毛恒涛
Owner 邓先樑
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