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Method for selective hydrodesulfurization of gasoline

A technology for hydrodesulfurization and gasoline hydrogenation, which is used in hydrotreating processes, chemical instruments and methods, and hydrocarbon oil treatment, etc., and can solve problems such as loss of octane number of products

Active Publication Date: 2015-07-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using traditional catalysts and processes, while hydrodesulfurization is being performed, the substantial hydrogenation saturation of olefins will cause a large loss in the octane number of the product

Method used

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  • Method for selective hydrodesulfurization of gasoline
  • Method for selective hydrodesulfurization of gasoline
  • Method for selective hydrodesulfurization of gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Take 100g of pseudo-boehmite powder produced by Catalyst Changling Branch, add 4.0g of methyl cellulose, 3.0g of scallop powder and 95mL of deionized water, fully stir and mix evenly, after kneading evenly by an extruder, extrude to form A wet form of aluminum hydroxide is obtained. Place the wet aluminum hydroxide molding in an oven at 150°C for 12 hours to dry. The molded carrier Z1 was obtained, and the radial crushing strength, water absorption rate and δ value (strength loss rate) of Z1 were measured, and the results are listed in Table 1.

Embodiment 2

[0059] Take 50g of pseudo-boehmite powder produced by Catalyst Changling Branch, 50g of self-made amorphous aluminum hydroxide powder, add 2.0g of methylcellulose, 3.0g of hydroxyethylmethylcellulose and 95mL of deionized water, fully stir and mix Uniform, after being kneaded evenly by extruder, extruded to obtain wet molding of aluminum hydroxide. Place the wet aluminum hydroxide molding in an oven at 220°C to dry for 6 hours. The molded carrier Z2 was obtained, and the radial crushing strength, water absorption rate and δ value of Z2 were measured, and the results are listed in Table 1.

Embodiment 3

[0061] Get 60g of pseudo-boehmite powder produced by Catalyst Changling Branch, 40g of aluminum hydroxide trihydrate, add 1.0g of methylcellulose, 2.0g of hydroxypropylmethylcellulose, 3.0g of kale powder and 95mL of deionized water , fully stirred and mixed evenly, after being kneaded evenly by an extruder, extruded to obtain a wet molded product of aluminum hydroxide. Place the wet aluminum hydroxide molding in an oven at 80°C for 12 hours to dry. The molded carrier Z3 was obtained, and the radial crushing strength, water absorption rate and δ value of Z3 were measured, and the results are listed in Table 1.

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Abstract

The invention discloses a method for selective hydrodesulfurization of gasoline. The method comprises that a gasoline distillate oil raw material contacts with a catalyst under gasoline hydrodesulfurization reaction conditions, wherein the catalyst comprises a forming carrier containing hydrated alumina, at least one non noble metal component loaded on the forming carrier and selected from the group VIII, and at least one metal component selected from the group VIB; the catalyst is taken as a reference, the content of the group VIII metal component is 0.1-6wt% by oxide, the content of the group VIB metal component is 1-25wt% by oxide, and the content of the carrier is 69-98wt%. Compared with the prior art, the method obviously improves gasoline hydrodesulfurization activity and has good hydrodesulfurization selectivity.

Description

technical field [0001] The invention relates to a hydrodesulfurization method, in particular to a method for selective hydrodesulfurization of gasoline. Background technique [0002] Air pollution is a serious environmental problem, and a large amount of engine emissions is one of the important causes of air pollution. In recent years, in order to protect the environment, countries around the world have put forward stricter restrictions on the composition of engine fuel in order to reduce the emission of harmful substances. [0003] At present, 90% to 99% of the sulfur in my country's finished gasoline comes from FCC gasoline. Therefore, reducing the sulfur content of FCC gasoline is the key to reducing the sulfur content of finished gasoline. [0004] To reduce the sulfur content of FCC gasoline, there are usually two technical solutions: hydropretreatment of FCC feedstock (pre-hydrogenation) or hydrodesulfurization of FCC gasoline (post-hydrogenation). Among them, the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/08C10G67/02B01J31/34
Inventor 李明丰褚阳曾双亲王奎李会峰聂红朱玫屈锦华李大东
Owner CHINA PETROLEUM & CHEM CORP
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