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Heavy oil catalytic cracking catalyst and preparation method thereof and heavy oil catalytic cracking method

A cracking catalyst, heavy oil catalysis technology, applied in catalytic cracking, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problem that the yield of light oil is not obvious, the coke effect is not obvious, the ratio of catalyst molecular sieve to carrier is not suitable, dry gas, The problem of high liquefied gas yield can achieve the effect of improving catalyst conversion rate, high activity stability, and improving total liquid yield.

Active Publication Date: 2015-04-29
HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, the ratio of the catalyst molecular sieve to the carrier prepared by the method disclosed above is not suitable, and the heavy oil cracking ability is not enough and the selectivity is not good. The problem of high yield of liquefied gas

Method used

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  • Heavy oil catalytic cracking catalyst and preparation method thereof and heavy oil catalytic cracking method
  • Heavy oil catalytic cracking catalyst and preparation method thereof and heavy oil catalytic cracking method
  • Heavy oil catalytic cracking catalyst and preparation method thereof and heavy oil catalytic cracking method

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preparation example Construction

[0028] The present invention also provides a method for preparing a heavy oil catalytic cracking catalyst, the method comprising: (1) mixing clay with water and performing acidification for the first time to obtain an acidified slurry, mixing alumina hydrate with the acidified slurry to obtain slurry, mixing at least one silicon source with the slurry to obtain a carrier slurry; (2) mixing the carrier slurry, surfactant and molecular sieve and performing second acidification to obtain a catalyst slurry; Spray granulation, roasting, washing and drying.

[0029] In the preparation method of the heavy oil catalytic cracking catalyst provided by the present invention, no aluminum sol binder is used in the preparation of the carrier slurry in step (1), which can ensure smooth pores of the prepared heavy oil catalytic cracking catalyst. The first acidification is carried out before the hydrated alumina, and the first acid solution added in the first acidification can react with the ...

Embodiment 1

[0051] This example illustrates the preparation method of the catalyst provided by the present invention.

[0052] (1) Prepare carrier slurry. After mixing 15.38 kg of kaolin (China Kaolin Company, with an alumina content of 36% by weight and a content of 78% by weight on a dry basis) and 48.00 kg of deionized water to make a slurry, acidify with 2180 ml of 30% by weight hydrochloric acid for 20 minutes. Add 14.75 kg of pseudo-boehmite (Hunan Yueyang Changke Chemical Co., Ltd., the content of alumina is 61% by weight, and the content of dry basis is 63% by weight), and after fully stirring for 40 minutes, add 10 kg of water glass at a uniform speed under rapid stirring (produced by Jinan Guoshi Weiye Co., Ltd., SiO 2 15% by weight, 20% by weight on a dry basis) and 3.75 kg of polyethyl silicate (produced by Qingdao Jiyida Silicone Reagent Factory, SiO 2 The content is 40% by weight, and the content on a dry basis is 70% by weight), the addition time is controlled to be 30 mi...

Embodiment 2

[0056] This example illustrates the preparation method of the catalyst provided by the present invention.

[0057] (1) Prepare carrier slurry. 21.15 kg of kaolin and 41.25 kg of decationized water were mixed and beaten evenly, and acidified with 2400 ml of 30% by weight hydrochloric acid for 40 minutes. Add 10.82 kg of boehmite, stir thoroughly for 20 minutes, then add 10.67 kg of water glass and 2.67 kg of silica sol (produced by Qingdao Jiyida Silica Gel Reagent Factory, SiO 2 The content is 30% by weight, the content on a dry basis is 30.5% by weight), the total addition time is controlled to be 20 minutes, and the reaction is fully performed for 40 minutes to obtain a carrier slurry.

[0058] (2) Catalyst preparation. Add 225 grams of diethanolamine aqueous solution to the carrier slurry obtained in step (1), stir for 30 minutes, add 15.52 kilograms of REY molecular sieve slurry (the content on a dry basis is 29% by weight, produced by Shandong Qilu Huaxin Hi-Tech Co., Ltd...

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Abstract

The invention discloses a heavy oil catalytic cracking catalyst, a preparation method of the heavy oil catalytic cracking catalyst and a heavy oil catalytic cracking method. The heavy oil catalytic cracking catalyst contains a molecular sieve and a carrier, wherein the carrier contains clay, aluminum oxide and silicon dioxide, and the weight ratio of the molecular sieve to the carrier is (0.136-0.37):1; the catalyst is prepared from the following components in percentage by weight: 40-55wt% of clay, 20-30wt% of aluminum oxide, 12-27wt% of molecular sieve and 5-10wt% of silicon dioxide. According to the heavy oil catalytic cracking catalyst, the weight ratio of molecular sieve to the carrier is appropriate, the catalyst has strong heavy oil cracking ability and high conversion rate, the total liquid yield is improved, the light toil yield is improved, the production rate of dry gas and liquefied gas is reduced and the coke has good selectivity.

Description

technical field [0001] The present invention relates to a heavy oil catalytic cracking catalyst and a preparation method thereof and a heavy oil catalytic cracking method, in particular to a heavy oil catalytic cracking catalyst, a preparation method of a heavy oil catalytic cracking catalyst and the heavy oil catalytic cracking catalyst prepared therefrom, And a method for catalytic cracking of heavy oil. Background technique [0002] Fluid Catalytic Cracking (FCC) process is an important means of deep processing of crude oil. The FCC catalyst used in this process mainly includes two parts: carrier and active component. The early FCC catalyst carrier mainly provided the catalyst with basic physical properties such as good anti-wear performance and moderate bulk density. To improve the reaction performance of the catalyst was mainly through the modification of the active component or increasing the proportion of the active component in the catalyst. to fulfill. [0003] W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08C10G11/05
Inventor 李华伍小驹文彬朱小顺佘喜春陈文良陈伟君包建国张烈清阳清
Owner HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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