Heavy-oil catalytic-cracking catalyst and preparing method

A cracking catalyst and heavy oil catalysis technology, applied in catalytic cracking, cracking, reforming naphtha, etc., can solve the problem of inability to reduce the olefin content of gasoline, improve gasoline quality, high aromatics and isoparaffin content, and increase production. rate effect

Active Publication Date: 2006-08-09
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] 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 an aluminum compound capable of forming χ-alumina, or an aluminum compound capable of forming η-alumina and / or Or a mixture of aluminum compounds capable of forming χ-alumina and aluminum compounds capable of forming γ-alumina.

[0020] The aluminum compound capable of forming η-alumina can be any aluminum compound capable of forming η-alumina in the catalyst preparation process, preferably β-alumina trihydrate; the aluminum compound capable of forming x-alumina can be Any aluminum compound capable of forming x-alumina during catalyst preparation, preferably α-alumina trihydrate.

[0021] The aluminum compound capable of forming γ-alumina can be any aluminum compound capable of forming γ-alumina during the catalyst preparation process, selected from one of boehmite, pseudoboehmite, aluminum sol or Several kinds...

example 1-6

[0036] The following examples illustrate the catalysts provided by the invention and their preparation.

[0037] Mix β-alumina trihydrate or β-alumina trihydrate with pseudoboehmite, molecular sieves, phosphorus compounds, rare earth metal compounds and water (sometimes with clay) and spray-dry the resulting slurry to a diameter of 40 -150 micron particles and 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 the amount of rare earth chloride solution 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

[0052] The following examples illustrate the catalytic performance of the catalysts provided by the present invention.

[0053] 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 Catalyzed cracking was carried out to the raw material oil shown in Table 8, and the catalyst loading was 9 grams. The reaction conditions and reaction results are listed in Table 9.

[0054] 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

This invention relates to a catalytic cracking catalyst of heavy oil, which includes Al2O and molecular sieves and clays or not, in which, said Al2O is eta or chi, or mixture of eta and / or chi and gamma-Al2O, said catalyst contains P and rare earth metal, the content of eta-Al2O and / or chi-Al2O is 0.5-50 weight%, that of the gamma-Al2O is 0-50weight% and that of the clay is 0-75% taking the gross of the catalyst as the primary standard, content of P is 0.1-8weight % counted in P205, the rare earth is 0.1-2% and the molecular sieve is 10-70% counted in oxide and the molecular sieve is Y- type zeolite.

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 an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/05C10G35/095
Inventor 邱中红龙军张久顺达志坚陆友宝田辉平朱玉霞张万虹王振波李才英
Owner CHINA PETROLEUM & CHEM CORP
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