Combined process of catalytic gasoline selective hydrodesulfurization and light gasoline etherification

A catalytic cracking gasoline and combined process technology, applied in the field of catalytic cracking gasoline selective hydrodesulfurization and light gasoline etherification combined process, can solve the problems of increasing investment costs of enterprises, reduce olefin content, save equipment investment costs and production Operating cost, effect of increasing octane number

Active Publication Date: 2014-01-22
NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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  • Application Information

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Problems solved by technology

However, such technologies are set up separately and become an independent device, which undoubtedly increases the investment cost of the enterprise.

Method used

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  • Combined process of catalytic gasoline selective hydrodesulfurization and light gasoline etherification
  • Combined process of catalytic gasoline selective hydrodesulfurization and light gasoline etherification
  • Combined process of catalytic gasoline selective hydrodesulfurization and light gasoline etherification

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Embodiment Construction

[0023] 1. The raw material oil (catalytic cracking gasoline 1) is first sent to the raw material buffer tank 1-1 after removing impurities and particles of 10 μm, and then boosted by the catalytic gasoline pump 1-2, mixed with hydrogen 2, and enters the selective In the hydrogenation reactor 1-3, and under the action of the commercially available hydrogenation catalyst FDJY-01 produced by Jiangsu Jiayuxin Co., Ltd., selective hydrogenation is carried out to remove dienes and colloid components in the raw oil, and make part of Hydrocarbons are isomerized. The operating conditions of the hydrogenation process are: hydrogen partial pressure 1.6MPa, inlet reaction temperature 120-180°C, liquid hourly space velocity 5-15h-1. Then enter the pre-desulfurization reactor 1-4, and remove active sulfur under the action of commercially available catalyst FDJZ-05. The reaction conditions are: reaction inlet temperature 230-260°C, outlet temperature 240-270°C, operating pressure 1.0 ~2.0MP...

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Abstract

The invention relates to a combined process of catalytic gasoline selective hydrogenation process and light gasoline etherification. The process innovatively unites catalytic gasoline selective hydrogenation hydrogen and light gasoline etherification as one. The selective hydrogenation process is employed for removing sulfur and nitrogen; the separated light gasoline component with high tertiary olefin content is then subjected to a methanol etherification with methanol to generate tert-amyl methyl ether, thus effectively reducing the olefin content of the light gasoline component and increasing octane number of the light gasoline. The sulfide removal rate is greater than 90%; dialkene is almost removed; and after etherification unit, the octane number can be increased by 2-6 units. The combined process shortens the process, saves equipment investment cost and operation cost and reduces land occupation of equipment.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a combined process of catalytic cracking gasoline selective hydrodesulfurization and light gasoline etherification. Background technique [0002] With the serious pollution of cities and the worsening of air quality, the NOx in the exhaust gas emitted by motor vehicles in various countries x , SO x And the restrictions on aromatics content are more stringent. On July 1, 2007, my country's national III standard for motor gasoline was officially implemented nationwide, requiring the sulfur content to be reduced from the original standard of 500ppm to below 150ppm. However, due to the limitations of quite a few refinery technology levels, especially in the traditional hydrodesulfurization process, there will be a large amount of saturation of olefins at the same time as hydrogenation, which directly leads to a significant decrease in octane number, increased hydrogen consum...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 孔德林马利海顾宝忠梁玉新杨晓丽
Owner NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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