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Process for preparing olefin hydrocarbon and light aromatic hydrocarbon with poor oil in high limit

A technology of inferior oil and processing technology, used in the petroleum industry, refined hydrocarbon oil, cracking and other directions, can solve the problems of long process flow, severe losses, and coking diesel cannot be sold as commercial oil.

Inactive Publication Date: 2008-12-03
袁培林 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material of the catalytic cracking unit is a mixture of the above-mentioned low-quality oil and coker wax oil. Although the above-mentioned disadvantages have improved, the problem has not been fundamentally solved; Build a hydrorefining unit
At present, the price of oil is getting more and more expensive, and the fuel-based refineries will even lose money in the conventional production of liquefied gas, gasoline, and diesel oil, especially when the hydrofining unit is added, which makes the process very long and the loss is even worse

Method used

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  • Process for preparing olefin hydrocarbon and light aromatic hydrocarbon with poor oil in high limit
  • Process for preparing olefin hydrocarbon and light aromatic hydrocarbon with poor oil in high limit
  • Process for preparing olefin hydrocarbon and light aromatic hydrocarbon with poor oil in high limit

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Embodiment

[0018] The present invention will be further described below with specific examples and comparative examples.

[0019] The percentages in the following comparative examples and examples are weight percentages unless otherwise specified.

Embodiment 1

[0029] Example 1 A petrochemical group in Shandong Province has established a delayed coking unit with an annual processing capacity of 1 million tons and a double-riser catalytic cracking unit with an annual processing capacity of 600,000 tons. The raw material of the catalytic cracking unit of Comparative Example 1 was used as the feed of the delayed coking unit, and conventional delayed coking process conditions were adopted, and the material balance was 4% of coking gas, 21% of coke, and 75% of coking oil. The physical and chemical properties of coking oil are shown in Table 5. The oil produced by coking is used as the feed to the main riser of the dual riser catalytic cracking unit, and the obtained catalytic gasoline is used as the feed to the auxiliary riser, and cracked under the process conditions given in Table 3. The catalyst used was the Flex-Tec catalyst produced by Engelhard, and the physical and chemical properties of the catalyst balancer are shown in Table 2. ...

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Abstract

The invention provides a process for maximizing the production of alkenes and light arenes from poor-quality oil, wherein the poor-quality oil is fed into a delayed coking device, and the mixture of the produced coker gasoline, coker diesel and coker gatch is used as the feeding material form the main riser of a double-riser catalytic cracking device; and the catalytic gasoline containing C4 component or even partial diesel is used as the feeding material for the auxiliary riser.

Description

technical field [0001] The invention belongs to the technical field of catalytic cracking technology in petroleum processing, and in particular relates to delayed coking of inferior oil materials, and the oil produced by coking is used as the raw material of a double-riser catalytic cracking device to produce as much liquefied petroleum gas (mainly as much propylene) as possible. , Benzene, toluene, mixed xylene processing technology. Background technique [0002] The world's demand for oil is increasing, and catalytic cracking processing of inferior raw materials is an inevitable problem. As far as our country is concerned, due to insufficient supply of crude oil, the catalytic cracking units of some refineries use imported fuel oil as raw material for catalytic cracking, such as Russia's M100 fuel oil. Fuel heavy oil has very low hydrogen content, high metal content such as Ni, V, Fe, Na, high content of polycyclic aromatic hydrocarbons, high content of S and N, high dens...

Claims

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Application Information

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IPC IPC(8): C10G11/00C10G21/00
Inventor 袁培林李鸿涛毛恒涛
Owner 袁培林
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