FCC process for producing enhanced yields of C.sub.4 /C.sub.5 olefins
US5472594A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Jul 18, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J29/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for converting a hydrocarbon charge to a product containing improved yields of C.sub.4 /C.sub.5 olefins with a reduction in the loss of gasoline yield which comprises: PA0 passing said hydrocarbon charge into contact with a catalyst comprising a phosphorus-containing medium pore zeolite mixed as an additive with Y-zeolite in a weight ratio of 0.005 to 0.10, said zeolites in separate or composite spray dried particles, PA0 wherein the catalyst to oil ratio is 0.1 to 10, reacting said hydrocarbon charge at a temperature of 800.degree. F. to 1200.degree. F., a pressure of 0 to 150 psig, and in the absence of added hydrogen, thereby producing a product containing improved yields of C.sub.4 /.sub.5 olefins and reduced loss in gasoline yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.