Method for fluid catalytic cracking of hydrocarbon feedstock
US5997726A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | May 12, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A hydrocarbon catalytic cracking process in which, a substantial portion of the hydrocarbons is pulverized and placed in contact with a specific contact zone, which is composed of: a mixing chamber having a maximum section S.sub.2, the upper part of which is fed with a heated regenerated catalyst through an upper opening delimiting a catalyst-flow section S.sub.1, and a descending-flow reaction area, in which the solid-gas mixture emanating from the mixing chamber is poured through an intermediate opening having a section S.sub.3 located in the lower part of said chamber. The ratios S.sub.2 /S.sub.1 and S.sub.2 /S.sub.3 have values of between 1.5 and 8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.