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Cracking catalyst containing mesoporous silica-alumina materials

A technology of cracking catalyst and mesoporous silica-alumina, which is applied in the direction of physical/chemical process catalyst, molecular sieve catalyst, cracking, etc. It can solve the problems that it is difficult to increase the colloidal solid content, so as to improve the conversion capacity of crude oil, strong conversion capacity of heavy oil, and reduce The effect of production costs

Active Publication Date: 2011-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the existing preparation process of catalytic cracking catalyst, the colloidal solid content of the catalyst is usually controlled at about 25-28%, and the high solid content can generally reach about 33-35%. It is difficult to further increase the colloidal solid content under the existing process conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation of catalyst CAT-1: kaolin slurry (content is 40% by weight, produced by China Kaolin Company), aluminum sol (Al 2 o 3 Content 21.5% by weight, produced by Qilu Catalyst Factory), mesoporous silica-alumina material SA-1, and REHY molecular sieve (RE 2 o 3 12.3 wt%, Na 2 O 5.1% by weight, silicon-aluminum ratio 4.7, produced by Qilu Catalyst Factory) and a certain amount of deionized water were mixed and beaten, the colloidal solid content was about 35%, stirred for 30 minutes, and then spray-dried to make a microsphere catalyst. The microsphere catalyst was calcined at 500°C for 1 hour, and then heated at 60°C with (NH 4 ) 2 SO 4 Washing ((NH 4 ) 2 SO 4 : Catalyst: H 2 O=0.5:1:10) to Na 2 O < 0.25% by weight, finally washed with a large amount of deionized water, filtered and dried at 110°C to obtain catalyst CAT-1.

[0029] Wherein the mesoporous silicon-aluminum material adopts the mesoporous silicon-aluminum material SA-1 of Example 1 in CN15...

Embodiment 2～5

[0033] Examples 2-5 illustrate the effect of substituting mesoporous silica-alumina materials for different components in the catalyst on the cracking performance of the catalyst.

[0034] The specific process of spraying the catalyst is the same as in Example 1, but in the preparation process, mesoporous silica-alumina materials are used to replace one or two or three mixtures of the active component molecular sieve, kaolin and binder, and adjust the catalyst The colloidal solid content is between 35% and 45%, and the catalysts CAT-2-CAT-5 are prepared.

[0035] The composition of the catalyst CAT-2 is: 35.0% of REHY molecular sieve, 40.0% of kaolin, 10.0% of aluminum sol, and 15.0% of mesoporous silica-alumina material SA-1.

[0036] The composition of the catalyst CAT-3 is: 35.0% of REHY molecular sieve, 26.0% of kaolin, 14.0% of aluminum sol, and 25.0% of mesoporous silica-alumina material SA-1.

[0037] The composition of the catalyst CAT-4 is: 30.0% of REHY molecular si...

Embodiment 6～8

[0052] The preparation process of the catalyzer among the embodiment 6~8 is the same as embodiment 1, but in the preparation process, the cracking active component molecular screening uses Y type molecular sieve, ZSM-5 molecular sieve (Na 2 O 2.8%, silicon-aluminum ratio 60, produced by Qilu Catalyst Factory) and beta zeolite (silicon-aluminum ratio 30, produced by Qilu Catalyst Factory) or a mixture of two or three, and adjust the colloidal solid content of catalyst at 35~ Between 45%, catalysts CAT-6, CAT-7, and CAT-8 were prepared.

[0053] The composition of the catalyst CAT-6 is: 32.0% REHY molecular sieve, 3.0% ZSM-5 molecular sieve, 40.0% kaolin, 10.0% aluminum sol, and 15.0% mesoporous silica-alumina material SA-1.

[0054] The composition of catalyst CAT-7 is: REY molecular sieve (RE 2 o 3 14.0%, Na 2 O 3.2%, silicon-aluminum ratio 5.4, produced by Changling Catalyst Factory) 30.0%, beta molecular sieve 5.0%, kaolin 33.0%, aluminum sol 12.0%, mesoporous silicon-al...

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PUM

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Abstract

The invention discloses a cracking catalyst containing mesoporous silica-alumina material, wherein the cracking catalyst is composed of cracking active components: clay, adhesive and mesoporous silica-alumina material. The mesoporous silica-alumina material is of a pseudo-boehmite crystal phase structure. In case of the weight of oxide, the anhydrous chemical expression formula is: (0-0.3) Na2O (40-90) Al2O3 (10-60) SiO2, the specific surface area is 200-400m<2> / g, pore volume is 0.5-2.0ml / g, the average pore size is 8-20nm, and the most probable pore size is 5-15nm. The adhesive is selected from one or two mixtures of silica sol or aluminum sol. Compared with the conventional catalyst with pseudo-boehmite, the cracking catalyst has the advantages of low production cost and better crude oil conversion capacity.

Description

technical field [0001] The invention relates to a heavy oil cracking catalyst, in particular to a fluid catalytic cracking catalyst with low cost and high heavy oil conversion capacity. Background technique [0002] Catalytic cracking is a petroleum refining process, which is widely used in the petroleum processing industry. As the most important processing process in the secondary processing of crude oil, this process is the main production method of liquefied petroleum gas, gasoline, kerosene and diesel oil. occupy a pivotal position in the In catalytic cracking and hydrocracking processes, heavy fractions such as vacuum distillates or residues of heavier components are reacted in the presence of catalysts to convert them into gasoline, distillates and other liquid cracking products as well as lighter four-carbon The following gaseous cracking products usually require the use of catalytic materials with high cracking activity during these reactions. [0003] Microporous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/70B01J29/08B01J29/40C10G11/05
Inventor 郑金玉李明罡罗一斌宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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