Method producing light fuel oil and propylene from poor residual oil

A technology for light fuel oil and residual oil, which is applied in the treatment of hydrocarbon oil, petroleum industry, and hydrocarbon cracking to produce hydrocarbons, etc., can solve the problems of low yield of light oil and application limitation of coking process, etc., and achieve the effect of efficient utilization.

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light oil yield of the coking process is low, and the outlet of high-sulfur petroleum coke has to be found. With the increasingly stringent product quality and environmental protection regulations, the application of the coking process will be limited

Method used

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  • Method producing light fuel oil and propylene from poor residual oil
  • Method producing light fuel oil and propylene from poor residual oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]The residue raw material A is mixed with the extracted oil extracted from catalytic cracking heavy oil aromatics, and enters the residue hydrogenation unit together with hydrogen. The reaction is carried out under the action of the residual oil hydrogenation catalyst, and the hydrogenated oil enters the hot high-pressure separator to be separated into a gas phase stream and a liquid phase stream, wherein the gas phase stream is recycled after being purified and boosted. The liquid phase stream is fractionated at normal pressure to obtain gas, hydrogenated gasoline, hydrogenated diesel oil and hydrogenated residual oil. The hydrogenated residual oil is used as the raw material for catalytic cracking, and the reaction is carried out in the presence of a catalytic conversion catalyst, and the reaction products are separated to obtain dry gas and liquefied gas. , FCC gasoline, FCC diesel and FCC heavy oil. The obtained catalytic cracking heavy oil accounts for 30% by weight ...

Embodiment 2

[0029] In this embodiment, residual oil B is used as the raw material, and the process flow is the same as that in Embodiment 1. The operating conditions and product distribution are shown in Table 2.

[0030] As can be seen from Table 2, both Example 1 and Example 2 have achieved relatively high liquid yields (liquefied gas+gasoline+diesel), which are 81.76% and 86.34% respectively. Propylene yields reached 3.91% and 4.90%, respectively. The invention organically combines processes such as hydrogenation treatment, catalytic cracking, aromatics extraction, etc., and produces propylene and light fuel oil from inferior raw materials to the maximum extent, thereby realizing efficient utilization of petroleum resources.

[0031] Table 1

[0032] Raw oil number

A

B

Density (20℃), kg / m 3

1023.8

970.0

Kinematic viscosity (100℃), mm 2 / Second

1570

481.3

Carbon residue, wt%

20.2

13.95

Nitrogen, w...

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Abstract

The invention discloses a method producing light fuel oil and propylene from poor residual oil, wherein residual oil raw materials and the extract oil of catalytic cracking heavy oil aromatics extraction are reacted in a residual oil hydrogenation unit, the obtained hydrogenation residual oil and the extract oil of the catalytic cracking heavy oil aromatics extraction enter a catalytic cracking device to react, the obtained catalytic cracking heavy oil enters an aromatics extraction device, then the raffinate oil and the extract oil are obtained after the treatment, the obtained extract oil is circulated to the residual oil hydrogenation unit, and the raffinate oil is circulated to the catalytic cracking device. The method organically combines hydrotreatment, catalytic cracking and aromatics extraction technologies, and produces propylene and light fuel oil from poor raw materials to the maximum extent.

Description

technical field [0001] The invention relates to a method for catalytically converting low-quality residue raw materials into light fuel oil and propylene through the organic combination of hydrogenation treatment, catalytic cracking and aromatics extraction processes. Background technique [0002] In recent years, with the aggravation of heavy and inferior crude oil, the difficulty of crude oil processing has increased, and the yield of light oil products has decreased, while the market demand for high-quality light oil products has continued to increase. The oil refining industry is facing more severe challenges, and the processing and full utilization of heavy oil is becoming a major topic of concern for the global oil refining industry. [0003] The deep processing of heavy components in crude oil mainly has two ways: decarburization and hydrogenation. At present, the residual oil processing methods widely used in industry include delayed coking, flexible coking, solvent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00C07C11/06C07C4/06
CPCY02P20/584
Inventor 刘涛戴立顺许友好王子军牛传峰杨清河孙淑玲邵志才
Owner CHINA PETROLEUM & CHEM CORP
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