Process for production of carbon black
US7655209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2008 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | May 31, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J19/0006
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Off-gas from a carbon black furnace is employed as a combustion gas feed stream to the burner or combustion zone of the same or a different carbon black furnace in accordance with certain embodiments, suitable conduit and valving is provided to pass off-gas, from which carbon black has been substantially removed, from any and all of multiple different carbon black furnaces to the burner. The off-gas is heated, preferably by plasma heating, and dewatered. Carbon dioxide stripping or rather stripping of gas components from the dewatered heated off-gas is found to be unnecessary to achieve economically favorable use of off-gas recirculation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.