Hydrocracking catalyst and preparation method thereof and heavy raw oil hydrocracking method

A hydrocracking and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of high catalyst conversion cost and unsolved carbon deposition, and achieve low coke yield and product High conversion rate and good product selectivity

Active Publication Date: 2019-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst used in this application needs to use noble metals, which makes the conversion cost of the catalyst higher, and does not overcome the carbon deposition problem

Method used

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  • Hydrocracking catalyst and preparation method thereof and heavy raw oil hydrocracking method

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preparation example Construction

[0035] The second aspect of the present invention provides a method for preparing the above-mentioned hydrocracking catalyst, wherein the method comprises:

[0036] (1) In the presence of an acid, a binder precursor slurry is prepared from an alumina source and a silicon oxide source;

[0037] (2) providing a carrier slurry containing a binder precursor slurry, a silica-alumina molecular sieve and an alkaline metal oxide, and spraying, drying and roasting the carrier slurry to obtain a carrier;

[0038] (3) The carrier is loaded with an active metal compound, then dried and roasted to obtain a catalyst precursor; the active metal compound is a compound containing a metal promoter;

[0039] (4) Reducing the catalyst precursor.

[0040] According to the present invention, in step (1), the alumina source can be the alumina source conventionally used in the art to prepare binders, such as hydrated alumina, alumina sol, boehmite, pseudoboehmite One or more of bauxite, alumina tri...

Embodiment 1

[0079] This example is used to illustrate the hydrocracking catalyst and its preparation method of the present invention.

[0080] (1) USY molecular sieves (purchased from Sinopec Catalyst Qilu Branch, with a dry basis content of 3kg), ZSM-5 molecular sieves (purchased from Sinopec Catalyst Qilu Branch, with a dry basis content of 0.8kg), oxidation Zinc powder (purchased from Headhorse Company, purity 99.7%, 0.66kg) was mixed with 6.57kg deionized water, and after stirring for 30 minutes, a mixed slurry containing USY molecular sieve, ZSM-5 molecular sieve and zinc oxide was obtained;

[0081] (2) kaolin (purchased from Suzhou Kaolin Factory S1 series, with a dry basis content of 1.5kg) and pseudoboehmite (purchased from Aluminum Corporation of China Shandong Branch, with a dry basis content of 1.35kg) were stirred and mixed, and then added 5.6kg of deionized water was mixed evenly, and then 500mL of hydrochloric acid (concentration of 30% by weight, purchased from Beijing Che...

Embodiment 2

[0086] This example is used to illustrate the hydrocracking catalyst and its preparation method of the present invention.

[0087] (1) PREHY molecular sieve (purchased from Sinopec Catalyst Qilu Branch, with a dry basis content of 4.6kg), ZRP molecular sieve (purchased from Sinopec Catalyst Qilu Branch, with a dry basis content of 1.2kg), magnesium oxide Powder (purchased from Weifang Lihe Powder Technology Co., Ltd., with a purity of more than 95%, 1.26 kg) was mixed with 8.6 kg of deionized water, and stirred for 30 minutes to obtain a mixed slurry containing PREHY molecular sieve, ZRP molecular sieve and magnesium oxide;

[0088] (2) Expanded perlite (purchased from Mantanghong Abrasives Factory in Gongyi City, with a dry basis content of 2.06kg, 30-60 mesh) and pseudo-boehmite (purchased from China Aluminum Shandong Branch, with a dry basis content of 1.48kg) was stirring and mixing, then added 5.6kg of deionized water and mixed evenly, then added 500mL of hydrochloric aci...

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Abstract

The invention relates to the field of hydrocracking, and particularly relates to a hydrocracking catalyst and a preparation method thereof and a heavy raw material oil hydrocracking method. The catalyst comprises a carrier and a supported metal accelerator, wherein the carrier is composed of a binder, a silicon-aluminum molecular sieve and an alkaline metal oxide; the total weight of the catalystis taken as a reference, the content of the silicon-aluminum molecular sieve is 10-65 wt %, the content of the metal accelerator is 1-30% by weight, the content of the alkaline metal oxide is 0.5-30 wt %, and the content of the binder is 5-50 wt %; the silicon-aluminum molecular sieve is a combination of a silicon-aluminum molecular sieve with a twelve-membered ring pore structure and a silicon-aluminum molecular sieve with an MFI structure. The hydrocracking catalyst disclosed by the invention is suitable for increased yield production of high-octane gasoline, the high-octane gasoline contains higher BTX, the product conversion rate is high, the product selectivity is good, the coke yield is relatively low, and the method is suitable for producing low-sulfur high-octane-value gasoline andliquefied gas for a long time.

Description

technical field [0001] The invention relates to the field of hydrocracking, in particular to a hydrocracking catalyst, a preparation method thereof, and a method for hydrocracking heavy raw oil. Background technique [0002] The existing low-quality catalytic diesel oil is used as light cycle oil in the catalytic cracking unit for re-refining operation to generate gasoline, cracked gas and coke. Although it can be partially converted, the re-refining ratio is large, the selectivity of gasoline is low, coke and dry gas The productive rate is too high, and the economic benefit is low. In recent years, for the purpose of environmental protection and improving economic benefits, many technologies use hydrocracking technology to upgrade low-quality diesel oil. [0003] The existing technologies mainly include the LCO Unicracking process launched by UOP Company to produce high-quality gasoline and low-sulfur diesel by LCO hydrocracking. The raw materials are hydrocracked after hy...

Claims

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Application Information

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IPC IPC(8): B01J29/80B01J37/02B01J37/08B01J37/18C10G47/20
Inventor 于敬川毛安国刘宪龙郭大为
Owner CHINA PETROLEUM & CHEM CORP
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