Production method for efficiently controlling specific surface area of conductive carbon black, and material delivering device
US10876006B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2020 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Jun 16, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are a production method for efficiently controlling a specific surface area of conductive carbon black, and a material delivering device. The production method for efficiently controlling a specific surface area of conductive carbon black includes making acetylene mixed with a hydrocarbon raw material undergo a pyrolysis reaction at 1300 to 1500° C., wherein the hydrocarbon raw material includes one, or a combination of more than one, of hydrocarbon compounds. When acetylene is introduced to undergo a pyrolysis reaction at 1800° C., conductive carbon black is obtained with a specific surface area of generally 80 m2/g or more. When acetylene is mixed with a hydrocarbon raw material so that the temperature of the pyrolysis reaction is reduced to 1300 to 1500° C., conductive carbon black is obtained with a specific surface area of substantially from 40 to 80 m2/g by controlling the pyrolysis temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.