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
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[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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