Hydrocracking catalyst containing silicon oxide-alumina

A silicon oxide-containing, hydrocracking technology, used in hydrocarbon oil cracking, petroleum industry, etc., can solve the problems of low hydrocracking activity and catalyst hydrocracking activity, and achieve improved hydrocracking activity and good selectivity. Effect

Active Publication Date: 2005-11-02
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a hydrocracking catalyst with high activity and a preparation method thereof for the disadvantages of low hydrocracking activity of existing catalysts
This is an important reason for the low hydrocracking activity of this type of catalyst

Method used

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  • Hydrocracking catalyst containing silicon oxide-alumina

Examples

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preparation example Construction

[0017] A preferred preparation k value is 0.5-13A·(cm 2 g) -1 And the method of silica-alumina having one or more alumina X-ray diffraction spectrograms among characteristic γ, η, θ, δ and χ is: the hydrate of alumina is mixed with at least one free The sequenced silicon-containing molecular sieve or the composition containing the disordered silicon-containing molecular sieve is uniformly mixed, and calcined at 350-850° C. for 2-8 hours, preferably at 450-650° C. for 3-6 hours. The alumina hydrate is selected from one or more mixtures of trihydrate alumina, monohydrate alumina and amorphous aluminum hydroxide; or a hydrate containing silicon, titanium, magnesium, boron, zirconium, One or more mixtures of one or more of thorium, niobium, and rare earth alumina trihydrate, alumina monohydrate, and amorphous aluminum hydroxide; it can also be: will be selected from γ, η One or more crystal forms of alumina among , θ, δ and χ are directly mixed evenly with at least one disordere...

example 1

[0040] 800 grams of NaY type molecular sieve (SiO 2 / Al 2 o 3 =4.8, crystallinity is defined as 100%, Changling Oil Refinery product) is placed in 4000 milliliters, concentration is in the ammonium chloride (Beijing Chemical Plant product, analytical pure) aqueous solution of 1.0 mole, exchange 1 hour under stirring at 90 ℃, Filter, wash with deionized water until no chlorine ions are detected, dry at 120°C, and bake at 550°C for 4 hours. Repeat above-mentioned process twice to obtain the Y-type molecular sieve A of sodium content (in sodium oxide) 0.35% by weight (measured by flame atomic absorption spectrometry), record sample crystallinity with X-ray diffraction method and be 76%, get Y-type molecular sieve A 200 grams were placed in 1000 ml of ammonium fluoride (product of Beijing Chemical Plant, analytically pure) aqueous solution with a concentration of 0.2 moles, stirred at room temperature for 1 hour, filtered, dried at 120°C, and calcined at 600°C for 4 hours to obt...

example 2

[0042] Take by weighing 12 grams of example 1 disordered Y-type molecular sieve B and 100 grams of SB powder (gibbsite produced by Condea, Germany) and mix to obtain the precursor Si-2 of silicon oxide-alumina (dry basis 74% by weight) , the Si-2 was calcined at 550°C for 4 hours, its X-ray diffraction spectrum is shown in figure 1 b, the silicon oxide content and k value are shown in Table 1

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Abstract

A silicon oxide - aluminum oxide contained hydrocracking catalyst contains a silicon oxide - aluminum oxide, a beta zeolite, metallic component containing at least a ferrum, cobalt or nickel from the VIII group and containing at least a molybdenum or wolfram from the VIB group, and the K value of said silicon oxide - aluminum oxide being from 0.4 to 15 A.(cm2.g)-1, catalyst as the datum, the weigh ratio of silicon oxide - aluminum oxide being from 10 to 99 percent, beta zeolite being from 1 to 50 percent, counted as oxidate, the weigh content ratio of metallic ingredient of the VIII group being from 1 to 10 percent, and the weigh content ratio of metallic ingredient of the VIB group being from 5 to 40 percent. The catalyst has a high hydrocracking activity, and a good selectivity to intermediate fraction oil.

Description

technical field [0001] The present invention relates to a hydrocracking catalyst, and more particularly to a silica-alumina-containing hydrocracking catalyst. Background technique [0002] In recent years, the trend of heavy and inferior crude oil has become increasingly obvious worldwide. At the same time, the demand for middle distillates and reforming and steam cracking raw materials has continued to increase, which promotes the use of high-quality and light-quality heavy distillates. The hydrocracking technology for the purpose of hydrocracking has developed rapidly, and the hydrocracking catalyst is one of the most important and key factors. [0003] Hydrocracking catalyst is a dual-functional catalyst, which has cracking activity and hydrogenation activity at the same time, that is, it contains acidic components and hydrogenation active components at the same time, and its acidity is mainly composed of heat-resistant inorganic oxides and / or va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G47/04
Inventor 毛以朝聂红石亚华李大东王奎张润强熊震霖胡志海
Owner CHINA PETROLEUM & CHEM CORP
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