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Catalytic cracking catalyst and preparation method and application thereof

A catalytic cracking and catalyst technology, applied in the field of processing paraffinic base oil or Fischer-Tropsch synthetic oil, catalyst additives or sub-catalysts, can solve the problems of increased catalyst consumption, reduced tower bottom oil yield, and affecting refinery benefits, etc., to achieve Good cracking activity and lower octane number

Inactive Publication Date: 2016-11-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main active component of this type of additive is ZSM-5 molecular sieve. Although the ZSM-5 based additive has an obvious effect on increasing the yield of LPG, there are also insurmountable problems. The main defect is to dilute the activity of the main agent and reduce the The conversion rate of heavy oil and the increase of catalyst consumption will affect the efficiency of refinery
[0005] At present, there are few catalysts or additives on the market that can meet multiple needs of refineries at the same time, especially catalysts that increase the conversion of heavy oil, reduce the yield of tower bottom oil, and increase the yield of gasoline and diesel

Method used

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  • Catalytic cracking catalyst and preparation method and application thereof
  • Catalytic cracking catalyst and preparation method and application thereof
  • Catalytic cracking catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] This example illustrates the preparation of an aluminum phosphate binder used in the catalyst of the present invention, which is prepared according to the method described in patent CN200910237012.5.

[0068] 4.39 kg of pseudo-boehmite (containing A1 2 o 3 3 kilograms) and 5.4 kilograms of decationized water beating for 30 minutes, under stirring, add 10.3 kilograms of 85% concentrated phosphoric acid in the slurry, then add 5.28 kilograms of 68% concentrated nitric acid, continue to stir and react for 45 minutes, and the colorless and transparent phosphoraluminum sol is obtained. Its pH is 1.3. After analysis, the aluminum phosphate contains 11.1% by weight of P, 6.5% by weight of Al, and P / Al (weight)=1.77.

Embodiment 2

[0070] This example illustrates the preparation of a Beta zeolite for use in the catalyst according to the invention.

[0071]Get 0.6g of aluminum sulfate (containing 18 g water of crystallization) and 0.318g of sodium hydroxide dissolved in 7.36ml of deionized water, stir for 30 minutes, then add 0.72g of white carbon black, continue to stir for 10 minutes to form a silica-alumina gel, 0.036 g Beta zeolite seeds were added. Continue to stir the gel obtained above for 10 minutes, put it into a stainless steel reaction kettle with polytetrafluoroethylene lining, and conduct hydrothermal crystallization at 120° C. for 72 hours. After cooling, filter at room temperature and dry at 120°C. Get the product, its n(SiO 2 ) / n(A1 2 o 3 ) = 10.2.

Embodiment 3

[0073] This example illustrates the preparation of a catalyst according to the method of the invention.

[0074] (1) Add 300 g of the sample obtained in Example 2 to pulp with 2.8 L of deionized water, add 150 g of ammonium sulfate and 150 g of oxalic acid, adjust the pH to 2.5, react at 80° C. for 1 hour, filter, wash, and dry at 120° C. Repeat this 3 times. Before the third filtration, add La(NO 3 ) 3 Solution (La 2 o 3 (103.13g / L) 160.9ml, stirred for 30min, filtered off the liquid, dried the solid sample at 120°C for 4h, and calcined at 550°C for 2h to obtain the desired modified Beta zeolite. The relative crystallinity of the sample measured by XRD is 58%, and the Na 2 O is 0.05%, RE 2 o 3 5.4%, SiO 2 / A1 2 o 3 for 45.

[0075] (2) While stirring, mix 1780g of kaolin and 2855ml of decationized water for 30min, add La(NO 3 ) 3 Solution (La 2 o 3 103.13g / L) 264ml, stirred for 1h, 1.18kg of aluminum phosphate prepared according to the method in Example 1 was a...

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Abstract

Provided is a preparation method of a catalytic cracking catalyst. The method comprises the following steps that beating is conducted on clay with decationized water, mixing is conducted to be uniform, water glass and a precursor of aluminum oxide and RE2O3 are added, stirring is conducted to be uniform, aluminum phosphate sol is added, stirring is conducted continuously for 30 min to 2 h, a Beta molecular sieve is added, continuously stirring and mixing are conducted to be uniform, a catalyst slurry of which the solid content ranges from 20.0 wt% to 50.0 wt% is obtained, the catalyst slurry is subjected to spray drying shaping finally, and the catalyst is obtained. The catalyst can be used for Fischer-Tropsch synthesis oil catalytic cracking.

Description

technical field [0001] The invention relates to a method for preparing a catalytic cracking catalyst and its application, in particular to a method for preparing a catalytic cracking catalyst comprising modified Beta zeolite, aluminum oxide, phosphorus oxide and rare earth oxide and its application. Specifically, it relates to a catalyst aid or sub-catalyst, which not only resists poisoning by heavy metals Ni and V, reduces dry gas and coke yields, improves heavy oil conversion, increases gasoline and diesel yields, and does not reduce the octane number of gasoline . The catalyst is especially suitable for processing paraffinic base oil or Fischer-Tropsch synthetic oil. Background technique [0002] In recent years, with the continuous heavy and inferior quality of crude oil processed by FCC, due to the high content of Ni and V in heavy oil, Ni and V will be deposited on the catalyst to poison them, especially the V deposited and accumulated on the catalyst will Destroying...

Claims

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Application Information

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IPC IPC(8): B01J29/06C10G11/05
Inventor 庞新梅沈宜泓王文清王骞刘其武李兆飞高健马俊王晓化李发永
Owner PETROCHINA CO LTD
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