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

A technology for coking whole distillate oil and coking heavy distillate, which is applied to the processing field of coking whole distillate oil, can solve the problems of easy coking, influence on diesel yield, influence on stable operation of production equipment, etc. The effect of saving heat exchange equipment or heating equipment

Active Publication Date: 2009-05-20
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
  • 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 charts of Examples 1 to 4 are shown in figure 1 , the comparative example is that the coking gasoline and diesel raw materials are directly entered into the hydrotreating reaction zone without fractionation, and the hydrotreating catalyst is filled with a hydrogenation protection agent, and its filling volume is 20% of the volume of the hydrotreating catalyst. The follow-up process is the same as figure 1 .

[0030] The hydrorefining catalyst used in each embodiment and the comparative example is FH-98 (FH-98 is a catalyst grade) produced by Wenzhou Catalyst Factory, and the hydropretreatment catalyst is 3996 (3996 is a catalyst produced by Fushun Petrochemical Company Catalyst Factory) brand), the hydrogenation protective agent is FZC-102 (FZC-102 is a catalyst brand) produced by the pilot base of Fushun Petrochemical Research Institute, wherein the hydrogenation protective agent is filled before the hydrogenation pretreatment catalyst, and its filling volume ...

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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 whole distillate oil, in particular to a method for processing coking whole distillate oil by a combined hydrogenation process, which is used for producing high-quality diesel products. The produced diesel products have low sulfur and nitrogen content and low cetane number. High, low freezing point, good storage stability, the obtained heavy naphtha can be used as a high-quality catalytic reforming raw material. Background technique [0002] At present, the international and domestic crude oil has shown a trend of heavier and inferior quality, and the scope of oilfields involved has become more and more extensive. In addition, the continuous development of the world economy and the increasingly strict environmental protection regulations require the production of a large amount of light and clean fuels. These require refinements and improvements to existing refining technologies to produce product...

Claims

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Application Information

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Patent Type & Authority Patents(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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