About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Real Time Imaging
|
Presentation Title |
In-operando Investigations of Refractory Materials Interacting with Ash/Slag from Mixed Feedstock Gasification |
Author(s) |
Jinichiro Nakano, Anna Nakano, Ömer Doğan, Matthew Lambert, Dana Goski |
On-Site Speaker (Planned) |
Jinichiro Nakano |
Abstract Scope |
Gasification is a high temperature process where carbon feedstock is reacted along with water to generate syngas, which then can be utilized to produce power or chemicals. Refractory bricks lined inside a gasifier undergo severe high temperature high pressure conditions. Ash components from the carbon feedstock form ash or molten slag depending on operation temperature and interact with refractory hot face, which causes materials degradation. Prolonged refractory service life is required to maintain the viable online availability of a gasifier, which otherwise causes frequent shutdowns, affecting production and energy efficiency. In this work, synthetic coal ash (Usibelli) and biomass ash (spruce) were interacted with commercially available refractory materials (alumina rich) at1200 °C, 64%CO-36%CO2. Materials interactions at the interface were investigated in operando using the customized high temperature environmental confocal scanning laser microscope. Melting temperatures of the resulting ashes, which are important to determining a practical operation temperature, are also reported. |
Proceedings Inclusion? |
Planned: |