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Pretreatment method for desulphurization adsorbents and desulphurization method for sulfur-containing hydrocarbon raw materials

An adsorbent and pretreatment technology, applied in the field of desulfurization of hydrocarbon raw materials, can solve the problems of overheating of the reactor, large loss of anti-violence index of desulfurization products, and long time, so as to reduce the difficulty of start-up, improve the adsorption desulfurization effect, and shorten the time. Effect

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The method of this patent application needs to pre-sulfurize the adsorbent, and the pre-sulfurization process takes a long time, usually about 30 hours
[0004] Moreover, in the gasoline adsorption desulfurization process, when olefin-containing raw materials (such as catalytically cracked gasoline) are used as the start-up raw materials of the unit, a large amount of olefins will be saturated during the start-up stage, causing the reactor to overheat, and resulting in desulfurization products in the start-up stage The resistance index loss is larger

Method used

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  • Pretreatment method for desulphurization adsorbents and desulphurization method for sulfur-containing hydrocarbon raw materials
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  • Pretreatment method for desulphurization adsorbents and desulphurization method for sulfur-containing hydrocarbon raw materials

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Embodiment 1

[0058] This example is used to illustrate the pretreatment method of the desulfurization adsorbent and the desulfurization method of sulfur-containing hydrocarbon feedstock in the present invention.

[0059] Pretreat the desulfurization adsorbent according to the above-mentioned pretreatment process outside the desulfurization adsorbent, and use the pretreated desulfurization adsorbent to desulfurize the sulfur-containing hydrocarbon raw material, wherein the pretreatment process is carried out in a cycle for 2 hours, and the pretreatment The implementation conditions of the process and the desulfurization process and the related parameters of the final desulfurized gasoline product are shown in Table 2.

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Abstract

The invention relates to a pretreatment method for desulphurization adsorbents. The pretreatment method comprises: desulphurization adsorbents and hydrocarbon raw materials containing alkenes are subjected to contact reaction under a non-hydrogen condition. The invention also relates to a desulphurization method for sulfur-containing hydrocarbon raw materials. The desulphurization method comprises: desulphurization adsorbents are pretreated according to the above method, and the pretreated desulphurization adsorbents are obtained; sulfur-containing hydrocarbon raw materials, hydrogen donors and the pretreated desulphurization adsorbents are subjected to contact reaction under an adsorption desulphurization reaction condition. The pretreatment method for desulphurization adsorbents takes an obviously short time, and when catalytic cracking gasoline with high content of alkenes is subjected to desulphurization, the pretreated desulphurization adsorbents obtained through the pretreatment method can prevent reactor temperature runaway phenomena caused by vast alkene saturation during the startup process effectively, and the startup difficulty is lowered.

Description

technical field [0001] The invention relates to a pretreatment method for a desulfurization adsorbent and a desulfurization method for sulfur-containing hydrocarbon raw materials. Background technique [0002] As people pay more and more attention to environmental protection, the restrictions on the sulfur content in light hydrocarbons used as fuels are becoming more and more stringent. Taking gasoline as an example, the European Union has stipulated that the sulfur content should not exceed 50 μg / g in 2005, and the Euro V gasoline standard planned to be implemented in 2010 stipulates that the sulfur content should be less than 10 μg / g. China's National III Standard, which was implemented on December 31, 2009, stipulates that the sulfur content of gasoline shall not exceed 150 μg / g, and plans to promote and implement the National IV Standard of gasoline sulfur content of not greater than 50 μg / g in 2014. [0003] The S-Zorb gasoline adsorption desulfurization process has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/20C10G25/09C10L3/12B01D53/83B01D53/48
Inventor 王文寿毛安国刘宪龙徐莉刘玉良
Owner CHINA PETROLEUM & CHEM CORP
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