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Method for reducing alkene and sulfur content in gasoline and method for producing propylene

A technology of olefin content and gasoline, which is applied in the production of bulk chemicals, chemical instruments and methods, and treatment of hydrocarbon oil, etc. It can solve the problems of low propylene selectivity and poor sulfur reduction effect, and achieve high olefin conversion and low-carbon olefins Effects of productivity, high propylene selectivity, and high propylene yield

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

AI Technical Summary

Problems solved by technology

But this method has low propylene selectivity, and does not involve reducing the sulfur content of sulfur-containing and olefinic gasoline, and the sulfur-reducing effect is poor

Method used

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  • Method for reducing alkene and sulfur content in gasoline and method for producing propylene
  • Method for reducing alkene and sulfur content in gasoline and method for producing propylene
  • Method for reducing alkene and sulfur content in gasoline and method for producing propylene

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preparation example Construction

[0011] Preferably, the preparation method of the regular structure catalyst comprises:

[0012] (1) Molecular sieves, vanadium components, alkaline earth metal components are mixed with water, and ground to obtain a mixture slurry whose particle diameter (d90) is 1 to 10 microns; 2 o 5 The weight ratio of the vanadium component to the molecular sieve on a dry basis is 0.1 to 35:100, and the molar ratio of vanadium to alkaline earth metal is 10:1 to 1:60;

[0013] (2) Mix the slurry obtained in step (1) and the phosphorus-aluminum binder component, with or without adding a dispersant, to obtain a coating slurry; wherein the phosphorus-aluminum binder component is a particle diameter of less than 100nm Phosphorus aluminum glue and / or particle diameter less than 100nm can form the precursor material of phosphorus aluminum oxide; The content of molecular sieve in the described coating slurry is 3~60% by weight, and P in the phosphorus aluminum binder component 2 o 5 and Al 2 o...

Embodiment 1

[0031] (1) 108 grams of HY type molecular sieve (on a dry basis) powder (d90=14 microns, industrial grade, product of Sinopec Catalyst Qilu Branch) and 3.86 grams of ammonium metavanadate (NH 4 VO 3 , chemically pure, produced by Beijing Chemical Plant), 55.5 grams of anhydrous magnesium nitrate (Mg(NO 3 ) 2 , chemically pure, produced by Beijing Chemical Plant) and 834.2 grams of deionized water are mixed uniformly, wet ball milled into a slurry, and the particle diameter of the mixture is d90=5 microns;

[0032] (2) Add 128 grams of phosphoraluminosol to the slurry obtained in step (1) (preparation method: make a slurry of pseudoboehmite and decationized water, add concentrated phosphoric acid with a concentration of 85% by weight under stirring, and heat up to 70°C Prepared by reacting for 1 hour. Wherein it contains 18% by weight of phosphorus pentoxide, 3% by weight of aluminum oxide, the pH value is 1.2, the particle diameter is 27~55nm, and the average particle diamet...

Embodiment 2

[0035] (1) 11 gram of ammonium metavanadate (specification is the same as Example 1), 13.9 gram of anhydrous magnesium nitrate (specification is the same as Example 1) are mixed homogeneously, the obtained solid mixture is roasted at 800 DEG C for 2 hours, obtain vanadium and Alkaline earth metal composite oxide VA1. The composition of VA1 is listed in Table 1-1;

[0036] (2) (1) obtained composite oxide VA1 and 120 grams of rare earth Y-type molecular sieves (on a dry basis, the same below) powder (d90=12 microns, RE 2 o 3 Content 3% by weight, product of Sinopec Catalyst Qilu Branch) and 252 grams of deionized water are mixed, wet ball milled into a slurry, and the particle diameter of the slurry is d90=8 microns;

[0037] (3) add 40 gram of phosphoraluminum glues in the slurry that (2) obtains (with the SB aluminum hydroxide powder that German Condex company produces, beat with decationized water, add the concentrated phosphoric acid that concentration is 85% by weight un...

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Abstract

The invention relates to a method for reducing alkene and sulfur content in gasoline and a method for producing propylene, which comprises a step that the gasoline containing alkene and sulfur enables a contact reaction with a structured catalyst composed of a cellular carrier and an active coating, the active coating comprises a molecular sieve, a vanadium component, an alkaline earth metal component and a phosphor aluminum binder; wherein the mol ratio of vanadium and alkaline earth metal is 10:1-1:60. The method is used for cracking hydrocarbon oil containing alkene and sulfur to prepare propylene, the sulfur content and alkene content in the gasoline product can be reduced to obtain a clean gasoline is reduced, and the method has higher propylene selectivity.

Description

technical field [0001] The invention relates to a method for producing propylene and clean gasoline by cracking olefin and sulfur gasoline. Background technique [0002] The sulfur content and olefin content requirements of vehicle fuels are becoming more and more stringent worldwide. 85% of my country's gasoline comes from catalytic cracking, and catalytic cracking gasoline contains a large amount of olefins and sulfur, which is difficult to meet the requirements of high-standard gasoline standards, and usually needs to be used as vehicle fuel after treatment. At present, the method for removing sulfur in sulfur-containing gasoline is usually to carry out hydrogenation pretreatment on raw oil, or carry out hydrogenation post-refining on gasoline to achieve the purpose of reducing sulfur in gasoline. However, these two methods require large investment, operate under high pressure, and have high operating costs, and are not suitable for reducing the olefin content of gasolin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C11/06C07C4/06C10G49/08B01J29/16B01J29/48B01J29/85
CPCY02P20/52
Inventor 朱玉霞王鹏田辉平孙言达志坚石德先
Owner CHINA PETROLEUM & CHEM CORP
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