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Method for producing high grade of diesel oil from charking full distillate oil

A technology of coking whole distillate oil and coking heavy distillation, which is applied in the processing field of coking whole distillate oil, can solve problems such as the influence of diesel oil yield, easy coking, and affecting the stable operation of production equipment, so as to prolong the production operation cycle, avoid coking, The effect of saving heat exchange equipment or heating equipment

Active Publication Date: 2007-07-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

This method is to hydrocrack all the coking distillate oil, which has a great influence on the yield of diesel oil. At the same time, the whole coking fraction, especially the distillate, contains more olefins and diolefins, and it is carried out at a higher temperature. During hydrocracking, these components are easy to coke, which affects the stable operation of the production unit

Method used

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  • Method for producing high grade of diesel oil from charking full distillate oil

Examples

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Embodiment 1-4 and comparative example 1

[0029] The flow chart of Examples 1 to 4 is shown in Figure 1. The comparative example is that the coking gasoline and diesel raw materials are directly fed into the hydrorefining reaction zone without fractionation. The hydrorefining catalyst is filled with a hydrogenation protective agent, and its filling volume is hydrorefining 20% of the catalyst volume, the follow-up process is the same as in Figure 1.

[0030] The hydrorefining catalyst used in each example and comparative example is FH-98 (FH-98 is the catalyst brand) produced by Wenzhou Catalyst Factory, and the hydrotreating pretreatment catalyst is 3996 (3996 is the catalyst produced by Fushun Petrochemical Company Catalyst Factory). Brand), the hydrogenation protection agent is FZC-102 (FZC-102 is the catalyst brand) produced by the pilot plant of Fushun Petrochemical Research Institute, where the hydrogenation protection agent is filled before the hydrogenation pretreatment catalyst, and its filling volume is hydrogena...

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Abstract

This invention discloses a method for producing high-quality diesel oil from whole fraction oil of coking. The method comprises: separating whole fraction of coking into light fraction oil of coking (containing part of light diesel oil fraction) and heavy fraction oil of coking (containing heavy diesel oil fraction), hydrogenation-modifying heavy fraction oil of coking in the presence of beta-zeolite-containing hydrogenation catalyst, mixing the modification product with light fraction oil of coking, and hydrogenation-refining. The method can obtain high-quality clean diesel oil and high-quality naphtha, and has such advantages as simple process and low energy consumption.

Description

Technical field [0001] The invention relates to a method for processing coking full distillate oil, in particular to a method for processing coking full distillate oil using a combined hydrogenation process, which is used to produce high-quality diesel products with low sulfur and nitrogen content and cetane number High, low freezing point, good storage stability, the obtained heavy naphtha can be used as high-quality catalytic reforming raw materials. Background technique [0002] At present, the international and domestic crude oil has a tendency to become heavier and deteriorate faster, and the range of oil fields involved is becoming wider and wider. In addition to the continuous development of the world economy and the increasingly stringent environmental regulations, it is necessary to produce a large number of light clean fuels. All these require the improvement and improvement of the existing oil refining technology to produce products that meet the requirements at the lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04C10G7/02
Inventor 石友良黄新露张宝香潘德满吴子明孙洪江
Owner CHINA PETROLEUM & CHEM CORP
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