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Octane value recovering catalyst and its use

A technology of octane recovery and catalyst, which is applied in the field of octane recovery catalyst and its application, which can solve the problems of unsatisfactory anti-coking ability, lower gasoline product yield, and intensified cracking reaction.

Inactive Publication Date: 2003-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the anti-coking ability of the acidic zeolite impregnated oxide catalyst is not ideal, and the range of improving the octane number to restore the stability of the catalyst is not large.
In addition, the increase in the amount of L acid also intensifies the cracking reaction, generating more C 3 -C 4 On the one hand, it reduces the yield of isomerized hydrocarbons, especially high-octane multi-branched isomeric hydrocarbons, and also reduces the yield of gasoline products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] This example prepares 2.0m%NiO / Beta+ZSM-5 (Beta / ZSM-5:80 / 20) octane recovery catalyst A.

[0032] Weigh 164.4g HBeta, 65.2g HZSM-5, 140.0g Al 2 o 3 , and grind and mix them evenly, add 150ml of dilute nitric acid solution with a concentration of 3.6g / 100ml, and grind them into a powder cake with suitable humidity. Extrude into rods with a diameter of 2.0 mm on a rod extruder. After air drying at room temperature, it was dried at 120° C. for 10 hours and calcined at 520° C. for 8 hours to prepare catalyst carrier A.

[0033] Take by weighing 100g of the above-mentioned catalyst carrier A and put it into a spray immersion tank, and start the rotary pump. A solution containing 2 g of NiO, 52 ml of nickel nitrate, was sprayed onto the catalyst support A within 30 minutes. After air drying at room temperature, it was dried at 120°C for 10 hours and calcined at 500°C for 8 hours to prepare catalyst A.

[0034] Weigh 100ml of the above-mentioned catalyst A and put it into...

example 2

[0037] This example prepares 2.0m% NiO / Beta+ZSM-5 (Beta / ZSM-5: 50 / 50) octane recovery catalyst B.

[0038] Weigh 118.8g HBeta, 106.0g HZSM-5, 140.0g Al 2 o 3 , and grind and mix them evenly, add 170ml of dilute nitric acid solution with a concentration of 4.6g / 100ml, and grind them into a powder cake with suitable humidity. Extrude into rods with a diameter of 2.0 mm on a rod extruder. After air drying at room temperature, it was dried at 120°C for 10 hours, and calcined at 520°C for 8 hours to prepare catalyst carrier B.

[0039] Weigh the catalyst carrier B 100g and put it into the spray tank, and start the rotary pump. A nickel nitrate solution containing 4 g NiO in 55 ml was sprayed onto catalyst support B within 30 minutes. After air drying at room temperature, it was dried at 120°C for 10 hours and calcined at 500°C for 8 hours to prepare catalyst B.

[0040] Weigh 100ml of the above-mentioned catalyst B and put it into a vertical test catalyst activation furnace, t...

example 3

[0043] This example prepares 2.0m% NiO / Beta+ZSM-5 (Beta / ZSM-5: 20 / 80) octane recovery catalyst C.

[0044] Weigh 71.3g HBeta, 148.3g HZSM-5, 140.0g Al 2 o 3 , and grind and mix them evenly, add 180ml of dilute nitric acid solution with a concentration of 5.6g / 100ml, and grind them into a powder cake with suitable humidity. Extrude into rods with a diameter of 2.0 mm on a rod extruder. After air drying at room temperature, it was dried at 120°C for 10 hours, and calcined at 520°C for 8 hours to prepare catalyst carrier C.

[0045] Weigh 100 g of the above-mentioned catalyst carrier C and put it into the spray tank, and start the rotary pump. The catalyst carrier C was sprayed with 60 ml of nickel nitrate solution containing 6 g of NiO in 30 minutes. After air drying at room temperature, it was dried at 120°C for 10 hours and calcined at 500°C for 8 hours to prepare catalyst C.

[0046] Weigh 100ml of the above-mentioned catalyst C and put it into a vertical test catalyst a...

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Abstract

The present invention discloses a kind of octane number restoring catalyst and its preparation and application. The catalyst has nickel oxide / ZSM-5+Beta as main component and alumina adhesive, and has a total acid amount of 0.31-0.65 mmol / g, L acid amount of 0.30-0.60 mmol / g and B acid amount of 0.03-0.06 mmol / g. The preparation process of the catalyst includes first loading active metal onto thecarrier and then hydrothermal treatment. The catalyst of the present invention is applied in the selective hydrogenating and desulfurizing of gasoline and has powerful carbon deposition resistance.

Description

1. Technical field [0001] The invention relates to an octane recovery catalyst and its application in catalytic gasoline selective hydrodesulfurization process. 2. Background technology [0002] With the rapid development of my country's automobile industry, the air pollution caused by automobile exhaust has attracted more and more attention. Due to the reduction of sulfur and olefin content in gasoline, CO and NO in automobile exhaust can be reduced x Therefore, the "Control Standards for Hazardous Substances in Motor Gasoline" formulated by the State Environmental Protection Administration of my country requires that the sulfur content of motor gasoline in my country is less than 800 μg / g, and the olefin content is less than 35 (v)%. This standard has been implemented in the three major cities of Beijing, Shanghai and Guangzhou since July 1, 2000, and will be implemented nationwide on January 1, 2003. With my country's accession to the World Trade Organization (WTO), my ...

Claims

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Application Information

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IPC IPC(8): C10G45/04
Inventor 赵乐平张丽娟陈玉琢宠宏段为宇
Owner CHINA PETROLEUM & CHEM CORP
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