Upgrading of pyrolysis tar using acidic catalysts
US4740291A · kind A · utility
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15Claims
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Key dates
| Filing date | Dec 20, 1984 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Dec 20, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pyrolysis tars are upgraded by hydrotreatment thereof in the presence of an acidic catalyst. The treated pyrolysis tars are used to produce premium cokes useful in the production of graphite electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.