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Gasoline and diesel oil combined hydrogenation method

A diesel and gasoline technology, which is applied in the fields of dearomatization, hydrodesulfurization, and deolefination of gasoline and diesel. The effect of easing conditions

Active Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] Aiming at the problems in the prior art that the temperature rise of the reactor is large and the heat of reaction cannot be fully utilized, the present invention provides a method for processing gasoline and diesel distillate oil, which can utilize the heat of reaction of coking gasoline and / or catalytic gasoline, and the process is simple , less energy consumption

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  • Gasoline and diesel oil combined hydrogenation method
  • Gasoline and diesel oil combined hydrogenation method
  • Gasoline and diesel oil combined hydrogenation method

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Embodiment Construction

[0019] In the gasoline and diesel combined hydrogenation method of the present invention, the catalysts described in step (1), step (2) and step (3) refer to non-noble metal hydrogenation with functions of hydrodesulfurization, olefin hydrogenation, and aromatic hydrogenation saturation. Catalyst, the function of the catalyst can focus on certain aspects. The non-noble metal catalyst generally exists in an oxidized state before use, and needs to be pre-sulfided to convert the non-noble metal oxide into a sulfide to have reactivity. Therefore, the non-noble metal catalyst must maintain the sulfided state during use. The hydrogenation catalyst used in the present invention can be a conventional gasoline hydrorefining catalyst or diesel hydrorefining catalyst. Generally, the metal of group VIB and / or group VIII is the active component, and the alumina or silicon-containing alumina is the carrier. Group VIB metals are generally Mo and / or W, and Group VIII metals are generally Co an...

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Abstract

The invention discloses a gasoline and diesel oil combined hydrogenation method, comprising the following steps: the raw gasoline is mixed with hydrogen, the mixture passes through a first reaction zone under the condition of gasoline hydrofining, a hydrofining catalyst is used in the first reaction zone and the raw gasoline is coker gasoline and / or fluid catalytic cracking gasoline; the reactor effluent from the first reaction zone is mixed with the raw diesel oil, the mixture passes through a second reaction zone under the condition of diesel oil hydrodearomatization, a hydrofining catalystis used in the second reaction zone and the raw diesel oil is one or more of straight-run diesel oil, coker diesel oil or fluid catalytic cracking diesel oil; and the reactor effluent from the secondreaction zone passes through a third reaction zone under the condition of diesel oil hydrodesulfurization and a hydrodesulfurization catalyst is used in the third reaction zone. The method effectively utilizes the heat emitted during secondary processing gasoline hydrogenation, is simple in process and low in energy consumption and can obtain high-quality gasoline and diesel oil products.

Description

Technical field [0001] The invention relates to a hydrocarbon hydrotreating method, in particular to a hydrotreating method for gasoline and diesel hydrodesulfurization, deolefin and dearomatization. Background technique [0002] The heaviness of crude oil is becoming a trend. Therefore, in order to increase the output of gasoline and diesel, most of the heavy crude oil requires secondary processing methods such as delayed coking and catalytic cracking. The secondary processing oil products are blended in gasoline and diesel. The proportion of components is getting larger and larger. However, because secondary processed gasoline and diesel contain a large amount of impurities such as sulfur, nitrogen, olefins, aromatics, etc., they cannot be directly used as a blending component, and can be used as a blending component after general hydrofining. For example, delayed coking is a commonly used method for lightening residual oil. The coking process is a secondary processing process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/08
Inventor 柳伟王震宋永一牛世坤李士才徐大海
Owner CHINA PETROLEUM & CHEM CORP
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