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Method for reducing sulfur content of catalytic cracking product

A technology of catalytic cracking and sulfur content, applied in the cracking field of hydrocarbon oil, can solve the problems of reducing the sulfur content of catalytic cracking gasoline, desulfurization ability and heavy oil conversion ability, and achieve the effect of high heavy oil cracking ability and high desulfurization ability

Active Publication Date: 2006-10-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0013] The purpose of the present invention is to overcome the shortcomings of the prior art that the desulfurization ability and heavy oil conversion ability are not high, and provide a new method for reducing the sulfur content of catalytic cracking products with higher desulfurization ability and heavy oil conversion ability, especially to reduce catalytic cracking Gasoline Sulfur Content Method

Method used

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preparation example Construction

[0028] In the preparation method of the cracking catalyst containing vanadium and molecular sieve, the method of introducing vanadium component in molecular sieve and / or inorganic oxide matrix and / or and precursor can adopt various existing methods, such as can adopt The method of ion-exchanging the vanadium compound aqueous solution with the molecular sieve can adopt the method of impregnating the molecular sieve and / or the inorganic oxide substrate with the vanadium compound, and can adopt the vanadium-containing compound and / or the vanadium-containing compound aqueous solution and the molecular sieve and / or heat-resistant inorganic The method of mixing the oxide matrix, grinding or not grinding, can adopt the precipitation method to deposit the vanadium in the vanadium compound aqueous solution onto the molecular sieve and / or the inorganic oxide matrix, and also can adopt the method of mixing the vanadium compound aqueous solution with the molecular sieve and / or A method in ...

example 1

[0040] This example illustrates the cracking catalyst containing vanadium and molecular sieve used in the method provided by the invention and its preparation method.

[0041] 529.4 grams of rare earth Y zeolite (unit cell constant is 24.6 angstroms, sodium oxide content 1.5% by weight, rare earth oxide content 18.9% by weight, wherein lanthanum oxide content 7.0% by weight, cerium oxide content 10.4% by weight, other rare earth oxide content 1.5% by weight, solid content 85% by weight, Zhoucun Catalyst Factory produces), 64.3 grams of ammonium metavanadate (NH 4 VO 3 , chemically pure, produced by Beijing Chemical Plant), 1850 grams of anhydrous magnesium nitrate (Mg(NO 3 ) 2 , chemically pure, produced by Beijing Chemical Plant) and 834.2 grams of deionized water were evenly mixed, dried at a temperature of 150 ° C, and then roasted at 750 ° C for 1 hour to obtain a compound containing only molecular sieves, vanadium components and alkaline earth metal components. Vanadiu...

example 2

[0043] This example illustrates the cracking catalyst containing vanadium and molecular sieve used in the method provided by the invention and its preparation method.

[0044] (1) with 5 kilograms of pseudo-boehmite (solid content is 61% by weight, produced by Shandong Aluminum Factory), 1.1 kilograms of ammonium metavanadate (the same as example 1), 1.39 kilograms of anhydrous magnesium nitrate (the same as example 1 for the specification) Mix evenly with 15 kilograms of deionized water to obtain a slurry with a solid content of 15% by weight, add 0.549 kilograms of hydrochloric acid aqueous solution with a concentration of 31% by volume under stirring, continue stirring until a uniform sol is formed, and place the obtained sol at 280 ° C spray-dried at 800°C for 1 hour to obtain an inorganic oxide matrix VA1 containing a vanadium component and an alkaline earth metal component, where the inorganic oxide matrix is ​​alumina. The composition of VA1 is listed in Table 1-1.

[...

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Abstract

A method for reducing the sulfur content of a catalytically cracked product, the method comprising, under cracking conditions, mixing a sulfur-containing petroleum feedstock with a vanadium-containing component, a molecular sieve and an alkaline-earth metal component, and the molar ratio of vanadium and alkaline-earth metal is 10:1 - 1:60 cracking catalyst, or a catalyst mixture containing the catalyst and a catalytic cracking catalyst is contacted. Compared with the prior art, the method has higher desulfurization and heavy oil conversion capacity.

Description

technical field [0001] The present invention relates to a method for cracking hydrocarbon oil, more specifically, relates to a method for reducing the sulfur content of catalytic cracking products. Background technique [0002] In recent years, due to environmental protection considerations, the requirements for fuel oil standards have been continuously increased worldwide. Take China as an example. In 1999, the State Bureau of Quality Supervision formulated the "Control Standard for Hazardous Substances in Motor Gasoline". According to the requirements of this standard, the sulfur content of finished gasoline should be less than 800ppm. In fact, more than 90% of the sulfur in finished gasoline comes from FCC gasoline. On the other hand, Middle East crude oil with higher sulfur content accounts for an increasing proportion of crude oil in Chinese refineries. Therefore, reducing the sulfur in FCC gasoline Content is critical to the production of cle...

Claims

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Application Information

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IPC IPC(8): C10G11/05B01J23/22B01J23/02B01J29/16C10G11/02
Inventor 何鸣元田辉平侯典国朱玉霞张万虹王鹏张瑞弛宗保宁龙军
Owner CHINA PETROLEUM & CHEM CORP
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