Production of fluid catalytic cracking catalysts
US4443553A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1982 |
| Grant date | Apr 17, 1984 |
| Priority date | — |
| Expiry date | Sep 20, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J29/084
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the process of preparing fluid catalytic cracking catalysts where an aqueous slurry, containing a zeolite, or zeolites, an alumina-containing binder, a clay and a silica source, is subjected to drying to form essentially water-free solid catalyst particles, the viscosity of the aqueous slurry can be significantly reduced by incorporation of a small but effective amount of [Al.sub.2 (OH).sub.6-y Cl.sub.y ].sub.x additive. Due to this decrease in viscosity, the solids content of the slurry can be raised until the original, additive-free viscosity level, is reached, which, in turn, results in increased solids throughput rate in the drying step with corresponding savings of thermal energy and improved catalyst production efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.