|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Real Time Imaging
||In-operando Interactions of Refractory Materials with Ash/Slag from Mixed Feedstock Gasification
||Anna Nakano, Kristin Tippey, Jinichiro Nakano, Hugh Thomas, Ímer Doğan, Matthew Lambert, Dana G. Goski
|On-Site Speaker (Planned)
Gasification utilizes a complex mixture of high temperature reactions to enable conversion of carbon feedstock to a syngas, which is used to produce electric power, synthetic fuels, and chemicals. The refractory liner that is used in a gasifier is required to withstand harsh high-temperature, high-pressure environments to protect the reactor. Under severe conditions, ash and/or molten slag originating from the carbon feedstock directly interacts with the refractory, causing materials degradation. The refractory service life limits the gasifier online availability, which negatively impacts production and energy efficiency, economics, and the environment. In this work, interactions of refractory materials with synthetic ashes from coal, biomass, and plastics were investigated at up to 1,200 ░C in 64%CO-36%CO2. In-operando materials observations were enabled by utilizing the customized high-temperature environmental confocal scanning laser microscope system. Potassium tended to travel through the refractory materials upon heating, but no apparent surface degradation was noted at 800 ░C.
||High-Temperature Materials, Energy Conversion and Storage, Other