Thermal cracking process with reduced coking
US5446229A · kind A · utility
30Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1993 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Dec 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G9/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the production of olefins in an olefin plant, which includes an olefin pyrolysis furnace having pyrolysis tubes in which hydrocarbon feedstock is cracked, comprises introducing hydrocarbon feed substantially free of phosphorous-containing compounds into the pyrolysis furnace and operating the furnace under pyrolysis conditions producing olefin-containing effluent therefrom wherein the pyrolysis tubes have an effective passivator of metal catalytic sites bonded to the exposed metal surface by injecting an effective passivator into the furnace at a point above the dew point of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.