Cracking catalyst for hydrocarbon and preparation method

A cracking catalyst and catalyst technology, which are used in cracking, catalytic cracking, petroleum industry and other directions, can solve the problems of not being able to reduce the olefin content of gasoline and increasing the content of low-carbon olefins and isobutane, etc.

Active Publication Date: 2006-02-01
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 ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] According to the preparation method of the catalyst provided by the present invention, the aluminum compound is an aluminum compound capable of forming η-alumina and / or x-alumina, or an aluminum compound capable of forming η-alumina and / or x-alumina and mixtures of aluminum compounds capable of forming gamma-alumina.

[0023]The aluminum compound capable of forming η-alumina and / or x-alumina can be any aluminum compound capable of forming η-alumina and / or x-alumina during the preparation of the catalyst, preferably α-trihydrate Alumina and / or β-alumina trihydrate, more preferably β-alumina trihydrate.

[0024] 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.

[0025] The phosphorus compound can be added at any step before roasting, for example, it can be added to the aluminum compound, molecular sieve and water, c...

example 1-6

[0034] The following examples illustrate the catalysts provided by the invention and their preparation.

[0035] 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 consumption of β-alumina trihydrate and pseudo-boehmite (or aluminum sol), the type and dosage of clay, the type and dosage of molecular sieve, and the kind and dosage of phosphorus compound are listed in Table 1-4 respectively. The spray drying temperature, calcination temperature and time are listed in Table 5. Catalyst C 1 -C 6 The composition is listed in Table 6.

example 7-12

[0049] The following examples illustrate the catalytic performance of the catalysts provided by the present invention.

[0050] Catalyst C 1 -C 6 Aged at 800°C for 8 hours with 100% steam. On the microfluidized bed reaction device, with the above-mentioned aged catalyst C 1 -C 6 The feed oil shown in Table 7 was subjected to catalytic cracking, and the catalyst loading was 9 grams. The reaction conditions and reaction results are listed in Table 8.

[0051] Among them, conversion rate = dry gas yield + liquefied gas yield + gasoline yield + coke yield; total liquid yield = liquefied gas yield + gasoline yield + diesel yield. Gasoline means the distillation range is C 5 Distillate at -221°C, diesel oil refers to the fraction with a distillation range of 221-343°C, liquefied gas refers to C 3 -C 4 fraction, the dry gas is H 2 -C 2 fractions.

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Abstract

A hydrocarbon cracking catalyst contains eta-alumina and/or x- alumina or the mixture of said alumina (0.5-50 Wt %) and gamma-alumina (0-50), the mixture of Y zeolite (30-90) and MFI zeolite (10-70), clay (0-75) and P(0.1-8). Its advantage is high quality of gasoline and liquefied gas.

Description

technical field [0001] The invention relates to a hydrocarbon cracking catalyst and a preparation method thereof. Background technique [0002] The heavy tendency of catalytic cracking raw oil is becoming more and more serious, which requires cracking catalysts and cracking processes to have strong cracking capacity to achieve the purpose of producing more light oil (gasoline and diesel) and liquefied gas. [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 order to make up for the loss of gasoline octane value caused by the decrease of olefin content, it is necessary to increase the content of isoparaffins and aromatics in gasoline, which requires the development of gasoline with lower olefin content and higher content of aromatics and isoparaffins. Hydrocarbon cracking catalyst ...

Claims

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Application Information

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IPC IPC(8): C10G11/05
Inventor 达志坚邱中红田辉平陆友宝朱玉霞龙军张久顺张万虹王振波李才英
Owner CHINA PETROLEUM & CHEM CORP
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