Preparation method of in-situ crystallization catalytic cracking catalyst

• Main Authors: ZHAO XIAOZHENG, HU QINGXUN, TENG QIUXIA, LIU HONGHAI, ZHAO HONGJUAN, XIONG XIAOYUN, WANG JIUJIANG, TIAN AIZHEN, WANG BAOJIE, YANG ZHOUXIA, SUN XUEQIN, ZHANG LI
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2019
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a preparation method of an in-situ crystallization catalytic cracking catalyst. Specifically, an in-situ crystallization process is adjusted, that is, the method comprises the steps of firstly mixing roasted soil balls and a sodium hydroxide solution for crystallization, and directly adding a guiding agent for crystallization without adding any external silicon sources to directly obtain an in-situ crystallization product with high crystallinity, a large pore volume and a low bulk density, and the method provided by the invention avoids a conventional method of adding special functional components into kaolin microspheres to improve a pore structure and improve crystallinity; the method provided by the invention reduces the production costs of the in-situ crystallization product, specifically, the raw material costs are low, and additional silicon sources are not required to be added; in the synthetic process, the liquid-solid ratio is reduced, and the single-kettle yield is increased;