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Boiling-bed residual-oil hydrocracking and catalytic-cracking combined process method

A catalytic cracking and hydrocracking technology, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, can solve problems such as full play of uncharacteristic features, reduce energy consumption, improve feed properties, and reduce total investment cost effect

Active Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

The combined process is only a reasonable matching of processing means according to the feed requirements of the device and the properties of the logistics after the reaction, and the characteristics of each combined process technology have not been brought into full play.

Method used

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Examples

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Embodiment

[0028] This example is a reaction process of residual oil hydrogenation using a catalytic cracking combined process of fluidized bed hydrocracking and two-stage regeneration. First, the residual oil raw material heated to 360°C in the heating furnace is contacted with the 540°C regenerated catalyst discharged from the charcoal burning process of the first-stage regenerator of catalytic cracking to exchange heat to 440°C. The weight ratio of the two is 1:3.4, and then the solid-liquid mixture flows Enter the centrifugal separator to separate the solid catalyst in the residual oil. After the heat exchange, the residual oil raw material is mixed with hydrogen and enters the ebullated bed reactor for hydrocracking reaction. The reactant flows through the high-pressure and high-temperature separator to obtain a light fraction of 350°C, in which the hydrogenated tail oil enters the catalytic cracking reactor for cracking reaction, and the catalyst to be regenerated after the catalytic ...

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Abstract

The invention discloses a boiling-bed residual-oil hydrocracking and catalytic-cracking combined process method which comprises the following steps that: a residual-oil raw material enters a boiling-bed residual-oil hydrogenation device for hydrocracking reaction after exchanging heat with a high-temperature regeneration catalyst from a catalytic cracking regenerator, total or partial boiling-bed hydrocracked tail oil enters a catalytic cracking device for cracking reaction to obtain a gasoline fraction and a diesel oil fraction, and after a catalytic cracking catalyst is regenerated, one part of the regenerated catalyst is circulated back to the catalytic cracking device, and the other part of the regenerated catalyst is used for preheating the incoming material of the boiling-bed residual oil to reaction temperature. The process characteristics of the hydrocracking and the catalytic cracking of a boiling bed are organically combined together through the combined process, respective advantages are fully exerted, the incoming material of a boiling-bed device is preheated by utilizing the high-temperature regenerated catalytic cracking catalyst, energy sources are saved, meanwhile, the heat load of a heating furnace is reduced.

Description

technical field [0001] The invention relates to a process method for producing light distillate oil from inferior residue oil, in particular to a combined process method for producing light distillate oil by organically combining fluidized bed hydrocracking and catalytic cracking processes. Background technique [0002] With the rapid development of the global economy, the demand for light and clean fuel oil is increasing rapidly, and the quality of crude oil is getting worse and worse, and the content of heavy components is getting higher and higher. How to effectively use non-renewable petroleum resources to achieve maximum lightness of residue Quality, production of high-value petroleum products is an important issue we are currently facing. [0003] Residual oil processing technology mainly includes two processes: hydrogenation and decarbonization. The decarburization process mainly includes solvent deasphalting, coking, heavy oil catalytic cracking, etc., and the hydrog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/04
Inventor 贾丽季洪海蒋立敬胡长禄
Owner CHINA PETROLEUM & CHEM CORP
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