Preparation method of silicon-containing cracking catalyst

A catalyst and binder technology, which is applied in the field of catalytic cracking catalyst preparation, can solve the problems of colloids being easy to condense and lose fluidity, and achieve the effects of good wear resistance, low preparation cost and high pore volume

Active Publication Date: 2009-06-17
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome the problem that the colloids existing in the process of preparing cracking catalysts containing silicon-containing binders from silica sol are easy to coagulate and lose fluidity, and provide a new preparation of cracking catalysts containing silicon-containing binders method

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  • Preparation method of silicon-containing cracking catalyst

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preparation example Construction

[0033] The catalyst preparation method according to the present invention also includes the step of introducing rare earth oxides. The rare earth oxide can be introduced in any step (1), (2), (3), (4) or (5). The rare earth oxide is introduced by introducing a solution containing a rare earth compound during the preparation of the catalyst, preferably the solution of the rare earth compound is introduced into the slurry in step (5). The rare earth compound is one or more of mixed rare earth chlorides, nitrates or lanthanide metal chlorides and nitrates. Based on the weight of the catalyst, the content of the rare earth oxide in the catalyst is 0.5-2% by weight.

[0034] According to the catalyst preparation method of the present invention, it may also include the step of introducing additives, such as oxides of P, Fe, Co, Ni, Mg, based on the weight of the catalyst, and the introduction amount of the additives shall not exceed 20% by weight. The additive can be introduced a...

example 1

[0040] With 40Kg decationized water, 8.64Kg pseudo-boehmite (industrial product of Shandong Aluminum Factory, solid content 63% by weight) is beaten, and hydrochloric acid (technical grade, concentration 31% by weight, the same hydrochloric acid used in the following examples and comparative examples) The pH value was adjusted to 3, and then 4.0 Kg of 1-ethynyl-1-cyclopentanol was added and stirred evenly. 44.44Kg of halloysite slurry (industrial product of Suzhou China Clay Company, solid content of 45% by weight) was beaten for 15 minutes with 2.72Kg of water glass solution (silicon oxide content 26.9% by weight, modulus 3.1, the same below). Mix the above two slurries, add 25kg of water, then add 32.92kg of ZSM-5 (silicon to aluminum ratio, produced by Sinopec Catalyst Qilu Branch) molecular sieve slurry (the concentration of the slurry is 37.97% by weight), beat for 15 minutes, and then add water glass Solution 42.63kg (silica content 26.9% by weight), beating for 20 minut...

example 2

[0042] 11.9Kg pseudo-boehmite (industrial product of Shandong Aluminum Factory, solid content 63m%) is beaten with 50Kg decationized water, its pH value is adjusted to 2.5 with hydrochloric acid, then 970g of 1-ethynyl-1-cyclohexanol is added Stir well. 44.44Kg of halloysite slurry (industrial product of Suzhou China Clay Company, solid content of 45% by weight) was beaten for 15 minutes with 6.49Kg of water glass solution (silica content of 26.9% by weight). Mix the above two slurries, add 22kg of water, and then add 19.08kg of molecular sieve slurry (the concentration of the slurry is 34.65%, wherein ZRP molecular sieve (silicon-aluminum ratio 55, produced by Sinopec Catalyst Qilu Branch) accounts for 92%, and β molecular sieve (Sinopec Catalyst Qilu Branch) Produced by the company, the silicon-aluminum ratio is 30) accounting for 8%), stirred for 15 minutes, then added 22.56 kg of water glass solution (26.9% by weight of silicon oxide content), stirred evenly, added phospho...

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Abstract

The invention provides a method for preparing a catalytic cracking catalyst. The method comprises the following steps: (1) deionized water and aluminum binder are mixed, beaten and added with acid and anticoagulant polymerization inhibitor; (2) part of silicon binder and clay are mixed and beaten; (3) molecular sieves and the deionized water are mixed and beaten; (4) serous fluids in steps (1), (2) and (3) are mixed and beaten; (5) a serous fluid obtained in a steps (4) is added with silicon binder, beaten and then added with acid; and (6) the serous fluid in step (5) is dried. The method is used for preparing the cracking catalyst containing silicon binder, can overcome the disadvantages that colloid in a method using silica sol to prepare the catalyst is easy to solidify, loses fluidity and is incapable of spray molding, and is low in preparation cost. The cracking catalyst prepared by the method has the advantages of good wear resistance, low bulk density, large pore volume, large aperture and good heavy oil cracking capability.

Description

technical field [0001] The invention relates to a preparation method of catalytic cracking catalyst. Background technique [0002] Generally speaking, the cracking catalyst containing silica sol binder has good wear resistance and low preparation cost. [0003] USP3867308 discloses the method for preparing cracking catalyst using sodium-containing silica sol as a binder. The catalyst prepared by this method has good wear resistance, but the bulk density is large, which is not conducive to fluidization, and the surface area is low, and the pore volume is small, which is not conducive to Catalytic cracking of heavy oil. [0004] USP4022714 and USP4107088 disclose a kind of catalyst and preparation method prepared by titanium, zirconium, iron, cerium, boron modified sodium-containing silica sol, modify the silica sol by these metals, to improve the specific surface and cracking activity of the fresh catalyst, However, there are also problems such as high packing density and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40B01J21/16C10G11/05
Inventor 刘宇键龙军田辉平朱玉霞许昀赵留周严加松
Owner CHINA PETROLEUM & CHEM CORP
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