Title:
CATALYTIC CRACKING CATALYST COMPRISING LARGE-PARTICLE-SIZE SOL AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/066153
Kind Code:
A1
Abstract:
A catalytic cracking catalyst comprising large-particle-size sol, and preparation method therefor. The catalytic cracking catalyst comprises, based on the total weight thereof, 15-50 wt% of β zeolite, 10-75 wt% of clay, and 10-50 wt% of large-particle-size sol. Pore distribution is measured by a low-temperature nitrogen adsorption method, and the total pore volume is not less than 0.200mL/g, wherein the pore volume of mesopores having a parameter of 4-50 nm is 60% or more of the total pore volume. The large-particle-size sol comprises 10-40 wt% of Al2O3, 50-85 wt% of P2O5, and 0.2-10 wt% of SiO2, wherein the mass ratio of P2O5:Al2O3 is (1.5-5.0):1, the mass ratio of SiO2:Al2O3 is (0.01-0.3):1, and the average particle size distribution of the sol is centered on 20-50 nm. The preparation method comprises: mixing an aluminum source and deionized water to obtain first slurry; mixing the first slurry with a phosphorus source to obtain second slurry; adding silica sol to the second slurry to obtain third slurry; aging the third slurry to obtain large-particle-size sol; and uniformly mixing the large-particle-size sol with clay and β zeolite to obtain fourth slurry, and spray drying and roasting the fourth slurry. The catalyst is applied to a catalytic cracking process, and can greatly improve the yield and selectivity of C4 olefins.
Inventors:
YU SHANQING (CN)
YAN JIASONG (CN)
YUAN SHUAI (CN)
ZHANG JIEXIAO (CN)
LI JIAXING (CN)
YAN JIASONG (CN)
YUAN SHUAI (CN)
ZHANG JIEXIAO (CN)
LI JIAXING (CN)
Application Number:
PCT/CN2022/125358
Publication Date:
April 27, 2023
Filing Date:
October 14, 2022
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC RES INSTITUTE OF PETROLEUM PROCESSING CO LTD (CN)
SINOPEC RES INSTITUTE OF PETROLEUM PROCESSING CO LTD (CN)
International Classes:
B01J27/16; B01J29/40; B01J29/70; B01J35/02; B01J35/10; B01J37/00; C10G11/05
Foreign References:
| CN108025298A | 2018-05-11 | |||
| CN107303507A | 2017-10-31 | |||
| CN102049284A | 2011-05-11 | |||
| CN109675616A | 2019-04-26 | |||
| US20170151554A1 | 2017-06-01 | |||
| US6355591B1 | 2002-03-12 | |||
| CN1055105C | 2000-08-02 | |||
| CN103785456A | 2014-05-14 | |||
| CN1417296A | 2003-05-14 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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