Reduction of bubble coalescence by louver baffles in fluidized bed gasifier

Bubble coalescence is a cause of decrease in gas-solid contact in a bubbling bed gasifier. This study used computational fluid dynamics (CFD) to explore a louver baffles arrangement that could reduce the bubble coalescence in the bubbling bed gasifier fueled by biomass. The results showed that 20 mm-gap baffles were not able to reduce the bubble coalescence while the 10 mm-gap baffles were effective to reduce the bubble size and slow down the bubble coalescence. The 10 mm-gap baffles also provided better gas-solid contact thorough the system. In addition, these baffles arrangement would steadily maintain full fluidization above the baffles. (c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Automated summary

This study used computational fluid dynamics to explore a louver baffles arrangement that could reduce bubble coalescence in a bubbling bed gasifier fueled by biomass. The results showed that 10 mm-gap baffles were effective in reducing bubble size and slowing down bubble coalescence, while also providing better gas-solid contact.