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A process for adsorption and desulfurization of cracked gasoline

A technology for cracking gasoline and adsorption desulfurization, which is applied in the petroleum industry, hydrotreating process, processing hydrocarbon oil, etc., can solve the problems of poor desulfurization effect and difficult to achieve industrial application, and achieves convenient filling, easy industrial application, and no loss. The effect of octane

Active Publication Date: 2016-06-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The adsorption, desorption and regeneration of the LADS process can be carried out in the same reactor, but its desulfurization effect is relatively poor, and it is difficult to realize industrial application

Method used

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  • A process for adsorption and desulfurization of cracked gasoline
  • A process for adsorption and desulfurization of cracked gasoline
  • A process for adsorption and desulfurization of cracked gasoline

Examples

Experimental program
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Effect test

Embodiment 1

[0034]Catalytic gasoline A which has undergone selective hydrodesulfurization is used as raw material, see Table 1, and the desulfurization adsorbent is prepared according to Example 3 of ZL03139159.1, and the process conditions and product properties are shown in Table 2 by using the method of the present invention. It can be seen from Table 2 that the sulfur content of the product is 9.7 μg / g, and the RON octane number does not lose.

Embodiment 2

[0038] In the case of the same raw materials as in Example 1, the desulfurization adsorbent was prepared according to Example 5 of ZL03139159.1. Using the method of the present invention, the adsorption desulfurization process conditions and product properties are shown in Table 2. It can be seen from Table 2 that the sulfur content of the product is 12.1 μg / g, and the RON octane number does not lose.

Embodiment 3

[0042] Catalytic gasoline B through selective hydrodesulfurization was used as raw material, see Table 1, and the desulfurization adsorbent was prepared according to Example 3 of ZL03139159.1. Using the method of the present invention, the adsorption desulfurization process conditions and product properties are shown in Table 2. It can be seen from Table 2 that the sulfur content of the product was 9.8 μg / g, and the RON octane number lost 0.1 units.

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Abstract

The invention discloses an adsorption desulfurization process of a cracked gasoline. The adsorption desulfurization process is a method for producing clean gasoline meeting the European V sulfur index requirement (less than 10 micrograms / gram of sulfur content) by combining non-hydrogenation physical adsorption desulfurization and a hydrogenation treatment adsorbent. The adsorption desulfurization process is characterized in that the catalytic gasoline (less than 150 micrograms / gram of sulfur content) treated by selective hydrodesulfurization is selected as the raw material and goes into a fixed bed reactor to contact with a desulfurization adsorbent, the catalytic gasoline desulfurized by adsorption goes out of the fixed bed reactor, the feeding of the raw material oil is stopped until saturated adsorption of the desulfurization adsorbent, the hydrogen gas is introduced to pass through the bed layer of the desulfurization adsorbent to perform hydrogenation treatment on the desulfurization adsorbent, and the hydrogenated desulfurization adsorbent can be continuously used for adsorbing sulfides in the catalytic gasoline. The adsorption desulfurization process of the cracked gasoline can be joined with the existing selective hydrodesulfurization process to produce the clean gasoline meeting the European V sulfur index requirement; the adsorption desulfurization process is low in equipment investment, convenient in desulfurization adsorbent loading, high in desulfurization rate, simple in process procedure, free of loss of octane number, and suitable for industrial application.

Description

technical field [0001] The invention relates to a method for adsorption and desulfurization of catalytic cracking gasoline, which belongs to the technical field of petroleum processing. Background technique [0002] The main problem of gasoline quality in my country is the high content of sulfur and olefins, because the proportion of catalytic cracked gasoline in the gasoline pool is too high. In my country, FCC gasoline is the main blending component of gasoline, accounting for more than 75%. Using catalytic cracking olefin reduction catalysts, additives and new catalytic cracking technology can reduce the olefin content in catalytic gasoline After passing through the traditional selective hydrodesulfurization process, the olefin content will be further reduced, and then through deployment, the refinery gasoline can reach an olefin content of less than The goal. However, it is difficult to meet the requirement that the sulfur content is less than 50 μg / g or further les...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/06
CPCC10G25/003C10G25/12C10G2300/202C10G2300/4006C10G2300/4012C10G2300/4018
Inventor 周金波高雄厚李长明李吉春董炳利王艳飞任海鸥田亮苟文甲程中克倪岩宋帮勇孔祥冰张松显许江李秋颖程琳
Owner PETROCHINA CO LTD