Multi-stage upgrading of hydrocarbon pyrolysis tar using recycled interstage product
US10894924B2 · kind B2 · utility
2Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2018 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | Jul 2, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/802
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A multi-stage process is described for upgrading pyrolysis tar, such as steam cracker tar, by hydroprocessing in at least two stages. Hydroprocessing in a first stage is performed in the presence of a utility fluid. The utility fluid has a boiling point distribution from about 120° C. to about 480° C. and is separated from the first stage product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.