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Method for producing high grade of diesel oil by 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 the problems of affecting the stable operation of production equipment, affecting the yield of diesel oil, and being easy to coke, so as to achieve stable operation and reduce gas production. efficiency and reduce energy consumption

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 by 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 Fig. 1. In the comparative example, the coking gasoline and diesel raw materials are directly entered into the hydrofinishing reaction zone without fractionation, and the hydrofinishing catalyst is filled with a hydrogenation protecting agent, and its loading volume is 20% of the catalyst volume, the follow-up process is the same as in Figure 1.

[0030] The hydrorefining catalyst used in each embodiment and comparative example is FH-98 (FH-98 is the catalyst brand) produced by Wenzhou Catalyst Factory, and the hydrogenation pretreatment catalyst is 3996 (3996 is catalyst brand) 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 test base of Fushun Petrochemical Research Institute, wherein the hydrogenation protection agent is loaded before the hydrogenation pretreatment catalyst, and its filling volume is hydro...

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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 oil of coking into light fraction oil (containing part of light diesel oil fraction) and heavy fraction oil (containing heavy diesel oil fraction), hydrogenation-modifying the heavy fraction oil in the presence of beta-zeolite-containing hydrogenation catalyst, hydrogenation-refining the light fraction oil, and fractionating the effluent. The method can obtain high-quality cloean 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 processing method of coking whole distillate oil, especially a method for processing coking whole distillate oil by using a combined hydrogenation process, which is used to produce high-quality diesel products. The produced diesel products have low sulfur and nitrogen contents 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, international and domestic crude oil has shown a trend of heavy and inferior crude oil, and the range of oil fields involved is becoming more and more extensive. In addition, the continuous development of the world economy and the increasingly stringent environmental protection regulations require the production of a large amount of light clean fuels. All of these require the perfection and improvement of the existing oil refining technology to produc...

Claims

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Application Information

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IPC IPC(8): C10G45/00C10G7/02
Inventor 关明华黄新露廖娜吴子明刘涛张学辉
Owner CHINA PETROLEUM & CHEM CORP
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