Process for the steam-cracking of heavy feedstocks
US4180453A · kind A · utility
60Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Feb 10, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fresh charge containing aromatic hydrocarbons is hydrotreated in admixture with a recycle fraction, in the presence of a bifunctional catalyst, a portion of the effluent is subjected to steam-cracking, thereby recovering a gas oil fraction which is subjected to hydrogenation and forms said recycle fraction. The mixture of recycle fraction and charge is advantageously treated with hydrogen in the presence of a monofunctional catalyst to hydrogenate olefins, at a lower temperature than the hydrotreatment, and then passed to the hydrotreatment zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.