Two stage catalytic process for pyrolysis oil upgrading to BTX
US11578276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2021 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Jul 1, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for upgrading pyrolysis oil includes contacting a pyrolysis oil feed with hydrogen in the presence of a mixed metal oxide catalyst in a first slurry reactor, where: the pyrolysis oil feed comprises multi-ring aromatic compounds comprising greater than or equal to sixteen carbon atoms, and contacting the pyrolysis oil feed with hydrogen in the presence of the mixed metal oxide catalyst in the first slurry reactor to convert at least a portion of the multi-ring aromatic compounds in the pyrolysis oil feed to light aromatic compounds comprising di-aromatic compounds, tri-aromatic compounds, or both, passing an intermediate stream comprising the light aromatic compounds to a second slurry reactor downstream of the first slurry reactor; and contacting the intermediate stream with hydrogen in the presence of a mesoporous zeolite supported metal catalyst in a second slurry reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.