A Combinatorial Approach to Producing High-Value Products

A combined method and high-value technology, applied in the field of hydrocarbon oil cracking, can solve the problems of small improvement in product quality and high coke yield, and achieve the effects of increasing overall economic benefits, increasing yield, and reducing yield

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires separate hydrotreating of heavy cycle oil, which increases equipment investment a lot, and only solves the problem of high coke yield in catalytic cracking units, and does not greatly improve product quality.

Method used

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  • A Combinatorial Approach to Producing High-Value Products
  • A Combinatorial Approach to Producing High-Value Products
  • A Combinatorial Approach to Producing High-Value Products

Examples

Experimental program
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Embodiment Construction

[0039] The method provided by the present invention will be further described below in conjunction with the drawings. The accompanying drawing is a schematic flow diagram of the combination method provided by the present invention. Many devices are omitted in the figure, such as pumps, heat exchangers, compressors, etc., but this is well known to those of ordinary skill in the art.

[0040] After the inferior wax oil feedstock from line 8 is mixed with fresh hydrogen from line 9 and circulating hydrogen from line 15, the mixed material enters hydrotreating reactor 1 through line 10, and is successively combined with hydroprotective agent, hydrodemetalization and desulfurization. After the catalyst and the wax oil hydrotreating catalyst are in contact, the hydrodesulfurization, hydrodenitrogenation, aromatic hydrogenation saturation, and hydrodemetalization reactions are carried out. The resulting hydrogenated oil enters the vapor-liquid high-pressure separator 2 through the pipel...

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Abstract

Provided is a combination method for raising yields of high-value products. A wax oil raw material goes to a hydrotreatment reaction zone, and is subjected to reactions of hydrodesulfurization, hydrodenitrification, aromatic hydrogenation saturation, hydrodemetallization and the like under action of hydrogenation catalysts. The obtained hydrogenated oil is subjected to separation and gas stripping. Both the obtained hydrogenated diesel oil fraction and hydrogenated wax oil fraction go to a catalytic cracking unit, a cracking reaction is carried out in the presence of catalytic cracking catalysts, gases, catalytic gasoline, light catalytic diesel oil, heavy catalytic diesel oil and catalytic circulation oil are obtained after fractionation, and the heavy catalytic diesel oil and the catalytic circulation oil are mixed and recycled back to the hydrotreatment reaction zone. Through the method, yields of high-value products of catalytic gasoline and the like can be raised, and yields of low-value products of coke, gases and the like can be lowered.

Description

Technical field [0001] The invention relates to a hydrocarbon oil cracking method for obtaining low boiling point fractions in the presence of hydrogen, and more specifically, to a method for producing high-octane gasoline components and low-sulfur diesel blending components from diesel raw materials. Hydrogen method. Background technique [0002] In the processing flow of the refinery, the wax oil fraction (generally its distillation range is around 350-570°C) cannot be directly used as vehicle fuel. It is necessary to adopt light processing techniques such as catalytic cracking and hydrocracking to make wax Only by splitting oil distillation into components with lower molecular weight and lighter distillation range can qualified gasoline and diesel components for vehicles be obtained. The catalytic cracking process has the advantages of good operational flexibility, high gasoline yield, and low one-time investment. However, the wax oil raw materials with high sulfur content, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 蒋东红张毓莹胡志海许友好龙湘云任亮高晓冬
Owner CHINA PETROLEUM & CHEM CORP
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