Cracking catalyst

A technology of catalyst and cracking activity, which is applied in the field of fluidized catalytic cracking catalysts to achieve the effects of improved hydrothermal activity stability, low wear index, and reduced heavy oil yield

Active Publication Date: 2006-11-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of the concept of mesoporous has provided the possibility for the preparation of new catalysts, but the current research results mostly focus on the use of expensive organic templates and organic silicon sources, and most of them have to go through high-temperature hydrothermal post-treatment process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The mesoporous silicon-aluminum material adopts the mesoporous silicon-aluminum material SA-1 of Example 1 in CN1565733A, and the chemical composition of SA-1 is 0.12 Na 2 O 73.7 Al 2 o 3 26.2 SiO2 2 , with a specific surface area of ​​362m 2 / g, the pore volume is 1.19ml / g, the average pore diameter is 12.8nm, and the most probable pore diameter is 10nm. Prepare SA-1 into a slurry, add 36% hydrochloric acid (chemically pure, produced by Beijing Chemical Plant) at 60°C for acidification, the acid-aluminum ratio is 0.20, the acidification time is 1.5 hours, and the acidified medium is obtained after filtration. Porous silicon-aluminum material, code number SH-SA-1.

[0029] Pseudoboehmite (solid content 65.8% by weight, produced by Shandong Aluminum Factory) was added to quantitative deionized water, after stirring evenly, adding hydrochloric acid with a concentration of 36% for acidification treatment, the acid-aluminum ratio was controlled at 0.15-0.2, at this time...

Embodiment 2～4

[0043] Examples 2-4 are used to illustrate the effects of different substitution amounts of acidified mesoporous silica-alumina materials on the physicochemical properties and cracking properties of catalysts.

[0044] After acidifying pseudo-boehmite, add kaolin slurry, aluminum sol and acidified mesoporous silica-alumina material SH-SA-1, stir for 20 minutes, then add REHY molecular sieve to the mixed slurry, stir for 20 minutes and then spray Form microsphere catalysts, and obtain catalysts C-2-4 after roasting, washing and drying, in which the acidified mesoporous silica-alumina material SH-SA-1 is used in amounts of 8%, 12% and 16% respectively.

[0045] The composition of catalyst C-2 is: REHY 35.0%, kaolin 28.0%, pseudoboehmite 22.0%, aluminum sol 7.0%, SH-SA-1 8.0%.

[0046] The composition of catalyst C-3 is: REHY 35.0%, kaolin 28.0%, pseudo-boehmite 18.0%, aluminum sol 7.0%, SH-SA-1 12.0%.

[0047] The composition of catalyst C-4 is: REHY 35.0%, kaolin 25.0%, pseudo...

Embodiment 5～7

[0058] Examples 5-7 illustrate the effect of substituting the acidified mesoporous silica-alumina material SH-SA-1 for different components in the catalyst on the physical and chemical properties and cracking performance of the catalyst.

[0059] The specific process of spraying the catalyst is the same as in Example 1, but in the preparation process, the acidified mesoporous silica-alumina material SH-SA-1 is used to replace one or two or three of the active component molecular sieve, kaolin and binder. The mixture of catalysts C-5-7 was prepared.

[0060] The composition of catalyst C-5 is: 30.0% of REHY, 28.0% of kaolin, 25.0% of pseudoboehmite, 7.0% of aluminum sol, and 10.0% of acidified mesoporous silica-alumina material SH-SA-1.

[0061] The composition of catalyst C-6 is: 35.0% REHY, 23.0% kaolin, 25.0% pseudo-boehmite, 7.0% aluminum sol, and 10.0% acidified mesoporous silica-alumina material SH-SA-1.

[0062] The composition of catalyst C-7 is: 30.0% REHY, 26.0% kaol...

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Abstract

This invention published a fluidization cracking catalyst. The main components of the catalyst are 5~70% (w/w) cracked active component, 5~80%clay and 10~60%agglomerant. Y-type of molecular sieve and 3~20% sialic material which based on catalyst and had been acidized within the cracked active component is the characteristic of the catalyst. The sialic material has a phase structure as thin diaspore. Its formula (calculated by weight of oxidants) is (0-0.3) Na2O . (40-90) Al2O3 . (10-60) SiO2. It has specific area 200~400m2/g, average aperture 8~20nm, most probable aperture 5~15nm.The acidification treatment mentioned was inorganic acid and sialic material (ratio of the tow: 0.1~0.3) kept contacting for 0.5~3h under room-temperature ~80DEG C.This catalyst has well intensity, high stability of activity, low yield of heavy oil and strong capability of conversion for crude oil.

Description

technical field [0001] The invention relates to a cracking catalyst, in particular to a fluid catalytic cracking catalyst containing mesoporous silicon-aluminum material. 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 zeolite catalyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/18
Inventor 郑金玉欧阳颖罗一斌
Owner CHINA PETROLEUM & CHEM CORP
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