Process for manufacturing an upgraded bio-oil from black liquor
US12043957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2020 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Mar 18, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for manufacturing an upgraded bio-oil derived from black liquor, comprising the following steps: —Providing black liquor, which comes from the pulp and paper manufacturing industry; —Subjecting black liquor to a pyrolysis treatment with formation of a pyrolyzed black liquor gas and a solid mass, which comprises char and salts; —Catalytic conversion of said pyrolyzed black liquor gas by contacting at least part of the latter with a bi-metallic modified zeolite catalyst with formation of the upgraded bio-oil, which comprises benzene, toluene, xylene (BTX), naphthalene and non-BTX products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.