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Catalytic gasoline hydrogenation deep desulfurization method

A technology for deep desulfurization and catalytic gasoline, applied in the petroleum industry, processing hydrocarbon oil, refining to remove heteroatoms, etc., can solve the problem of increasing the effective production cycle of the hydrodesulfurization system, poor desulfurization effect, and reducing the processing capacity of the hydrodesulfurization system, etc. problems, to achieve the effect of improving the quality of aromatics, increasing the temperature space, reducing consumption and replacement frequency

Active Publication Date: 2021-05-14
宁波科元精化股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for deep desulfurization of catalytic gasoline hydrogenation to solve the problem of poor desulfurization effect in the prior art, increase the effective production cycle of the hydrodesulfurization system, and reduce the processing capacity of the hydrodesulfurization system

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  • Catalytic gasoline hydrogenation deep desulfurization method

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Embodiment 1

[0023] A method for deep desulfurization of catalytic gasoline hydrogenation disclosed in this embodiment comprises the following steps:

[0024] S1. The raw material is filtered and sent to the buffer tank. After being boosted by the raw gas compressor, it is sent to the preheating furnace and pre-mixed with hydrogen to form a mixed gas, which is preheated to 280°C, and then exchanged with the desulfurized output gas. Heat and cool down to 245°C, enter the next step;

[0025] S2. Control the bed temperature in the hydrogenation reactor at 320°C, then send the mixed gas in step S1 into the hydrogenation reactor, add a hydrogenation catalyst first, and under the action of the hydrogenation catalyst, olefin saturation reaction occurs, At the same time, organic sulfur conversion reaction and organic chlorine conversion reaction occur, so that organic sulfur is converted into infinite sulfur, and organic chlorine is converted into inorganic chlorine and removed;

[0026] S3, then...

Embodiment 2

[0038] A method for deep desulfurization of catalytic gasoline hydrogenation disclosed in this embodiment comprises the following steps:

[0039]S1. The raw material is filtered and sent to the buffer tank. After being boosted by the raw gas compressor, it is sent to the preheating furnace and pre-mixed with hydrogen to form a mixed gas, which is preheated to 280°C, and then exchanged with the desulfurized output gas. Heat and cool down to 245°C, enter the next step;

[0040] S2. Control the bed temperature in the hydrogenation reactor at 320°C, then send the mixed gas in step S1 into the hydrogenation reactor, add a hydrogenation catalyst first, and under the action of the hydrogenation catalyst, olefin saturation reaction occurs, At the same time, organic sulfur conversion reaction and organic chlorine conversion reaction occur, so that organic sulfur is converted into infinite sulfur, and organic chlorine is converted into inorganic chlorine and removed;

[0041] S3, then ...

Embodiment 3

[0047] A method for deep desulfurization of catalytic gasoline hydrogenation disclosed in this embodiment comprises the following steps:

[0048] S1. The raw material is filtered and sent to the buffer tank. After being boosted by the raw gas compressor, it is sent to the preheating furnace and pre-mixed with hydrogen to form a mixed gas, which is preheated to 280°C, and then exchanged with the desulfurized output gas. Heat and cool down to 245°C, enter the next step;

[0049] S2. Control the bed temperature in the hydrogenation reactor at 320°C, then send the mixed gas in step S1 into the hydrogenation reactor, add a hydrogenation catalyst first, and under the action of the hydrogenation catalyst, olefin saturation reaction occurs, At the same time, organic sulfur conversion reaction and organic chlorine conversion reaction occur, so that organic sulfur is converted into infinite sulfur, and organic chlorine is converted into inorganic chlorine and removed;

[0050] S3, then...

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Abstract

The invention discloses a catalytic gasoline hydrogenation deep desulfurization method, and the method comprises: S1, filtering a raw material, feeding the material into a buffer tank, pressurizing the material through a raw material gas compressor, feeding the material into a preheating furnace, pre-mixing the material with hydrogen to form a mixed gas, pre-heating the mixed gas to a temperature of 280 DEG C, carrying out heat exchange with the desulfurized output gas, and performing cooling to a temperature of 245 DEG C; S2, controlling the bed temperature in a hydrogenation reactor at 320 DEG C, then feeding the mixed gas in the step S1 into the hydrogenation reactor, firstly adding a hydrogenation catalyst, carrying out an olefin saturation reaction under the action of the hydrogenation catalyst, and simultaneously carrying out an organic vulcanization conversion reaction and an organochlorine conversion reaction, so the organic vulcanization is converted into electrodeless sulfur, and organic chlorine is converted into inorganic chlorine to be removed; S3, enabling the raw gas to enter a zinc oxide desulfurization reactor, enabling zinc oxide and hydrogen sulfide to be subjected to a desulfurization reaction, removing sulfur in the raw gas, and thus obtaining refined oil with the sulfur content lower than 1 ppm. The denitrification effect is improved.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a method for deep desulfurization of catalytic gasoline hydrogenation. Background technique [0002] With the rapid development of catalytic cracking heavy oil lightening in my country, catalytic light aromatics are also increasing. With the heavy and high sulfurization of raw materials, the sulfur and olefin content of catalytic light aromatics are also increasing. Hydrofining is one of the core technologies for the processing of sulfur-containing raw materials and the production of clean energy. After decades of research and development and industrial practice, my country's hydrogenation refining technology has generally approached the advanced level in the world, and occupies a relatively high position in China. market share, making an important contribution to the development of the petrochemical industry. With the upgrading of market products, the country's environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04
CPCC10G45/04C10G2300/202C10G2300/70Y02P20/52
Inventor 陶春风滕明才瞿滨刘海星杨先庆
Owner 宁波科元精化股份有限公司
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