Method for upgrading steam cracker tars
US5443715A · kind A · utility
19Cited by
24References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1993 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Mar 25, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G69/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the production of gaseous olefins which involves introducing a hydrocarbon feedstock stream into a high temperature thermal cracking zone to produce a high temperature cracked product stream, quenching the cracked product stream to stop the cracking reactions, injecting at least one HDD (hydrogen donor diluent) into the cracked product stream at or downstream of the point at which the reaction is quenched, recovering normally gaseous olefins from the cracked product stream, and recovering a liquid product stream containing a diminished asphaltene content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.