About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Real Time Imaging
|
Presentation Title |
An Investigation of the Impact Experimental Equipment Parameters Have on Synthesis Slag Behaviors in an Oxidative Environment Using a Confocal Laser Microscope |
Author(s) |
Carlos Ortiz, Jinichiro Nakano, Anna Nakano, James Bennett |
On-Site Speaker (Planned) |
Carlos Ortiz |
Abstract Scope |
Slag, as a process byproduct, is generated by many commercial processes, including gasification. During gasification of a carbon feedstock (typically coal and/or petcoke), ash impurities rapidly melt and coalesce to form a silica-rich molten oxide mixture called slag. This slag interacts with the refractory liner and can foul the syngas cooler, causing corrosive and chemical dissolution that can lead to a gasifier shutdown for cleaning or repair. During the gasification process, slag experiences rapid changes in temperature and oxygen partial pressure as it travels through the gasifier. Slag is not expected to globally attain thermodynamic equilibrium during its short residence time in the gasification chamber. In this work, the melting and crystallization behavior of gasification slag was evaluated by controlling gas flow rate, heating/cooling rates, and gas compositions using a high temperature environmental confocal laser microscope. Results of studies will be interpreted as to the expected impact on gasifier operation. |
Proceedings Inclusion? |
Planned: |