Catalytic cracking with reduced emission of noxious gases
US4221677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1979 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Mar 19, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cyclic, fluidized catalytic cracking process providing reduced emissions of noxious effluents in regeneration zone flue gases is operated with homogeneous or non-homogeneous, regenerable, fluidized, solid particles which are circulated throughout the catalytic cracking process cycle and which comprise (1) a molecular sieve-type cracking catalyst, comprising a cracking catalyst matrix containing crystalline aluminosilicate distributed throughout said matrix and (2) a metallic reactant which reacts with a sulfur oxide to form a metal- and sulfur-containing compound in the solid particles. The method involves regeneration of the cracking catalyst in the presence of a metallic oxidation promoter which can also be a component of the solid particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.