Method of lowering olefine content in gasoline

A technology for olefin content and gasoline, which is applied in the petroleum industry, cracking, catalytic cracking, etc., can solve problems such as the inability to effectively improve the quality of gasoline products, and achieve the effect of reducing olefin content

Active Publication Date: 2007-06-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for reducing the olefin content in gasoline that can effectively improve the quality of gasoline products in order to overcome the disadvantage that the existing technology for reducing the olefin content in gasoline cannot effectively improve the quality of gasoline products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation method of the catalyst can be prepared by the preparation method of the regular structure catalyst known to those skilled in the art, the difference is that the active components are different. For example, the preparation method of the catalyst can refer to the method described in CN1199733C. The method for preparing the catalyst used in the present invention includes, for example, preparing a slurry of active components and distributing the resulting slurry of active components onto the inner and / or outer surfaces of a support having a regular structure. The active components are commercially available or prepared by various methods. For example, mixed rare earth metals containing phosphorus, germanium, tin, antimony, bismuth, lead, copper, silver, zinc, cadmium, vanadium, molybdenum, tungsten, manganese, iron, cobalt, nickel, lanthanum, cerium, rich cerium, rich The salt of one or several elements in the lanthanum mixed rare earth metal or the compou...

Embodiment 1

[0026] This example is used to illustrate that the present invention provides a method for reducing the olefin content in gasoline.

[0027] Stir pseudoboehmite, ferric chloride, cerous chloride, and lanthanum chloride in deionized water evenly, adjust the pH to 10.5 with sodium bicarbonate, stir at a constant temperature of 80°C for 110 minutes, and filter and wash until the water content is 70% by weight of the wet cake was used. HZSM-5 molecular sieve (SiO 2 / Al 2 o 3 50) was added into deionized water, stirred and homogenized at 80°C for 30 minutes to obtain a uniform slurry, 70% by weight of the slurry was taken out, and the remaining slurry was adjusted to pH=4 with citric acid, and then the taken out The slurry and the wet filter cake are added together and stirred at 80°C for 70 minutes, baked at 130°C for 4 hours, and calcined at 850°C for 6 hours to obtain the ZSM-5 molecular sieve active component containing cerium, iron, and lanthanum. The addition amount of ZS...

Embodiment 2

[0031] This example is used to illustrate the method for reducing the olefin content in gasoline provided by the present invention.

[0032] HZSM-5 molecular sieve (SiO 2 / Al 2 o 3 200) the active component is added to deionized water, adjusted to pH=4, made into a slurry with a solid content of 25% by weight, and then wet ball milled to a particle diameter of 10 microns, after which the active component will be equivalent to the dry weight of the active component 1.0% by weight of polyvinyl alcohol solution (adjusting pH=4 with formic acid in advance) joins in the above-mentioned slurry, is coated on the foam alumina carrier after stirring (the cross-sectional hole density is 31 holes / square centimeter, and the hole cross-sectional area is 4 square millimeters), dried at 120°C for 6 hours and then calcined at 600°C for 1 hour to obtain the regular structure catalyst of the present invention. Based on the total amount of the structured catalyst, the content of the active co...

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Abstract

The method of lowering olefin content in gasoline is to contact gasoline containing olefin with water and catalyst to obtain gasoline product with lowered olefin content. The catalyst is regular catalyst comprising carrier in regular structure and active component coating distributed in the inner surface and outer surface of the carrier, and active component is composition containing molecular sieve. The method of the present invention can lower the olefin content in gasoline from 51.9 wt% to 22.28 wt% and convert olefin into propylene and ethylene in the yield as high as 18 % and 2 % separately.

Description

technical field [0001] The invention relates to a method for reducing olefin content in gasoline. Background technique [0002] Olefins are one of the main unclean components in gasoline products. In my country's gasoline blending components, 80-88% of the olefins come from catalytic cracking gasoline containing olefins. Therefore, the quality of gasoline products containing olefins is an important factor affecting the quality of oil products in my country. [0003] Existing technologies for reducing olefin content in olefin-containing gasoline mainly focus on developing new catalysts or additives for selectively reducing olefin content in olefin-containing gasoline, using new process technologies, or catalytically converting olefins into other hydrocarbons Compounds such as ethers, aromatics or alkanes to achieve the purpose of reducing the olefin content in gasoline containing olefins. [0004] However, the current technology of direct production of low-olefin gasoline ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/05
Inventor 贺振富邵潜龙军李阳田辉平达志坚段启伟
Owner CHINA PETROLEUM & CHEM CORP
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