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Hydrogenation process method for catalytically cracked gasoline

A technology of catalytic cracking gasoline and process method, which is applied in the field of hydrogenation process of gasoline fraction, and can solve difficult problems

Active Publication Date: 2013-08-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has good desulfurization selectivity, but it is still difficult to process high sulfur, high olefins, and strict restrictions on sulfur content

Method used

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  • Hydrogenation process method for catalytically cracked gasoline
  • Hydrogenation process method for catalytically cracked gasoline

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Embodiment Construction

[0015] In the gasoline hydrogenation process of the present invention, the catalysts in the first reaction zone and the second reaction zone refer to non-precious metal hydrogenation catalysts capable of hydrodesulfurization, hydrodenitrogenation, and olefin saturation, and the functions of the catalysts can be focused on certain aspects. The non-precious metal catalyst generally exists in an oxidized state before use, and it needs to be pre-sulfurized so that the non-precious metal oxide can be converted into a sulfide to have reactivity. The vulcanization method is well known to those skilled in the art. The hydrogenation catalyst used in the present invention can be a conventional gasoline hydrotreating catalyst, generally with VIB group and / or Group VIII metal as an active component, with alumina or silicon-containing alumina as a carrier, and the VIB group metal is generally Mo and / or W, the Group VIII metal is typically Co and / or Ni. Based on the weight of the catalyst,...

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Abstract

The invention discloses a hydrogenation process method for catalytically cracked gasoline. The method comprises the following steps of: fractionating and cutting a full-range gasoline raw material into three fractions, namely a light fraction, an intermediate fraction and a heavy fraction; performing deep hydrodesulfurization, hydrodenitrogenation and olefins saturated reaction on the heavy fraction in a first reaction area; mixing effluent and the intermediate fraction, and performing selective hydrodesulfurization on the mixture in a second reaction area; and mixing hydrogenated gasoline fraction separated from the reaction effluent of the second reaction area and the light fraction, and performing alkali-free deodorization to obtain a low-sulfur and high-octane gasoline product. Compared with the prior art, the method can perform deep desulfurization and simultaneously further reduce the octane loss of the gasoline product.

Description

technical field [0001] The invention relates to a process for hydrogenation treatment of hydrocarbons, in particular to a process method for hydrogenation of gasoline fractions. Background technique [0002] In order to reduce vehicle exhaust emissions, new standards for clean gasoline formulated by countries around the world have put forward stricter restrictions on sulfur content. Therefore, reducing the sulfur content in gasoline is a major issue facing refineries. my country's catalytic cracking (FCC) gasoline accounts for more than 80% of the finished gasoline, and FCC gasoline has the characteristics of high sulfur content and high olefin content, and olefin is a high-octane component of gasoline. The desulfurization process often results in oversaturation of olefins and a large loss of gasoline octane number. Therefore, minimizing the loss of octane number during hydrodesulfurization has become an urgent problem to be solved in FCC gasoline hydrodesulfurization techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02C10G65/04
Inventor 柳伟
Owner CHINA PETROLEUM & CHEM CORP
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