Cracking catalyst for hydrocarbon and preparation method

A cracking catalyst and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, cracking, etc., can solve the problems of not being able to reduce the olefin content of gasoline and insufficient resistance to heavy metal pollution, and achieve strong resistance to heavy metal pollution, low Effect of Olefin Content, High Light Oil Yield

Active Publication Date: 2007-04-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has strong heavy oil cracking activity and good light oil selectivity, but it cannot reduce the olefin content in gasoline, and the ability to resist heavy metal pollution is not enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] According to the preparation method of the catalyst provided by the invention, the aluminum compound is an aluminum compound capable of forming η-alumina and / or χ-alumina, or an aluminum compound capable of forming η-alumina and / or χ-alumina and mixtures of aluminum compounds capable of forming gamma-alumina.

[0021] The aluminum compound that can form η-alumina and / or χ-alumina can be any aluminum compound that can form η-alumina and / or χ-alumina in the catalyst preparation process, preferably α-trihydrate Alumina and / or β-alumina trihydrate, more preferably β-alumina trihydrate.

[0022] The aluminum compound capable of forming γ-alumina may be any aluminum compound capable of forming γ-alumina during the catalyst preparation process, preferably boehmite, pseudoboehmite and / or aluminum sol.

[0023] The phosphorus and alkaline earth metal compound can be added in any step before roasting, as can be added to the aluminum-containing compound, molecular sieve and water...

example 1-6

[0033] The following examples illustrate the catalysts provided by the invention and their preparation.

[0034] Mix β-alumina trihydrate or β-alumina trihydrate with pseudo-boehmite, molecular sieves, phosphorus compounds and water (sometimes clay) for slurry, and spray-dry the obtained slurry to form a diameter of 40-150 microns Particles are also calcined to obtain catalyst C provided by the invention 1 -C 6 . Wherein, prepare catalyst by the method for example 6, be to replace pseudo-boehmite described in example 5 with aluminum sol, obtain catalyst C 6 . The amount of β-alumina trihydrate and pseudo-boehmite, the type and amount of clay, the type and amount of molecular sieve, the type and amount of phosphorus compound and alkaline earth metal compound are listed in Table 1-5 respectively. The spray drying temperature, calcination temperature and time are listed in Table 6. Catalyst C 1 -C 6 The composition is listed in Table 7.

example 7-12

[0056] The following examples illustrate the catalytic performance of the catalysts provided by the present invention.

[0057] Catalyst C 1 -C 6 To carry out nickel, vanadium and iron pollution, that is, immerse in a kerosene solution containing nickel and vanadium naphthenate for 1 hour, dry at 120°C, then impregnate the catalyst with an aqueous ferric chloride solution for 1 hour, dry at 120°C, and dry at 550°C Calcined for 4 hours, and finally aged at 800°C with 100% steam for 8 hours to contaminate the catalyst with 4000ppm of nickel, 1500ppm of vanadium and 3000ppm of iron. On the small-scale fluidized bed reactor, use the above-mentioned polluted catalyst C 1 -C 6 , carry out catalytic cracking to the raw material oil shown in Table 8, and the catalyst loading is 90 grams. The reaction conditions and reaction results are listed in Table 9.

[0058] Among them, conversion rate = dry gas yield + liquefied gas yield + gasoline yield + coke yield; light oil = gasoline ...

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Abstract

A cracking catalyst for hydrocarbon contains the eta-alumina and / or x-alumina or the mixture of said alumina (0.5-50 Wt %) and gamma-alumina (0-50), Y zeolite (10-70), clay (0-75), P (0.1-4) and alkali-earth metal (0.1-4). It has high resistance to heavy metal pollution.

Description

technical field [0001] The invention relates to a hydrocarbon cracking catalyst and a preparation method thereof. Background technique [0002] The heavy and inferior tendency of catalytic cracking feedstock oil is becoming more and more serious. Metal pollutants such as nickel, vanadium, and iron contained in the feedstock will deposit on the surface of the catalyst, causing catalyst poisoning and deactivation, thereby deteriorating the selectivity and lightening the catalyst. The yield of quality oil decreased, while the yield of hydrogen and coke increased. This requires the cracking catalyst and cracking process to have a strong ability to resist heavy metal pollution, so as to achieve the purpose of producing more light oil (gasoline and diesel). [0003] For FCC gasoline, olefins, aromatics and isoparaffins are the main contributors to the octane number. Due to environmental protection requirements, it is necessary to reduce the olefin content in FCC gasoline. In ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/14C10G11/05
Inventor 陆友宝邱中红朱玉霞田辉平张万虹王振波龙军张久顺李才英
Owner CHINA PETROLEUM & CHEM CORP
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