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Combined process for pretreating and catalytically cracking hydrocarbon oil

A catalytic cracking and combined process technology, applied in hydroprocessing process, petroleum industry, hydrocarbon oil treatment, etc., can solve problems such as operational flexibility limitations, achieve the effects of reducing costs, improving desulfurization efficiency, and improving flexible operability

Inactive Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the weight content of residual oil in raw oil cannot exceed 50%, and the hydrotreating catalyst needs to adopt a graded packing method and has strict requirements on the pore volume of the catalyst used, so the operational flexibility of this method is greatly limited

Method used

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  • Combined process for pretreating and catalytically cracking hydrocarbon oil
  • Combined process for pretreating and catalytically cracking hydrocarbon oil
  • Combined process for pretreating and catalytically cracking hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 7

[0046] Example 7 is directly hydrogenated without demetallization, and Example 8 is hydrogenated after demetallization. The rest of the reaction conditions are the same, and the hydrogenation oil after 3000 hours of operation of the device has the properties of oil.

[0047] Table 10 FCC process conditions and main product properties

[0048]

[0049] As can be seen from the above examples, the inventive method has produced high-quality catalytic cracking raw materials through a simple process and mild process operating conditions, and the inventive method can effectively process residues including , catalytic cracking tail oil, low-quality wax oil, light wax oil and coker wax oil and other raw materials.

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PUM

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Abstract

The invention discloses a combined process for pretreating and catalytically cracking hydrocarbon oil. The process comprises the following steps of: feeding a residual oil raw material and catalytic cracking slurry oil into a solvent de-asphalting device for performing de-asphalting treatment; mixing de-asphalted oil with deep drawing VGO (Vacuum Gas Oil), feeding into a hydrogenation demetalization reaction area, and undergoing a reaction under the actions of hydrogen and a demetalization catalyst; mixing one or two of obtained hydrogenation demetalization effluent, light wax oil and coking gas oil, feeding into a hydrotreatment reaction area, and undergoing a reaction in the presence of hydrogen and a hydrotreatment catalyst, wherein a liquid phase separated from hydrotreatment reactor effluent is taken as a catalytic cracking raw material; and feeding the catalytic cracking raw material into a catalytic cracking device for reacting, and circularly returning the catalytic cracking slurry oil to the solvent de-asphalting device for performing circular processing. Due to the adoption of a method disclosed by the invention, different catalytic cracking raw materials can be treated segmentally, the operating flexibility and desulfuration efficiency of a device are increased, and the cost is lowered.

Description

technical field [0001] The invention relates to a hydrocarbon oil pretreatment and catalytic cracking combined process, in particular to a hydrocarbon oil pretreatment and catalytic cracking combined process capable of processing various raw materials. Background technique [0002] At present, the nature of crude oil in the world is gradually becoming heavier and worse, coupled with the continuous development of the world economy and increasingly stringent environmental protection regulations, it is necessary to produce a large amount of light and clean fuels, all of which require the improvement and improvement of the existing refining technology to Produce products that meet the requirements at the lowest cost. [0003] Catalytic cracking (FCC) continues to play an important role in the processing of heavy feedstocks to produce light products. The quality of light oil products directly produced by catalytic cracking technology is poor, especially the sulfur content of cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/04
Inventor 崔哲刘涛刘继华黄新露孙士可
Owner CHINA PETROLEUM & CHEM CORP
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