Numerical simulations of flue gas desulfurization in a spouted bed based on two-fluid model
Abstract：Activated carbon aided desulfurization in a spouted bed reactor was modeled by twophase, gas-solid fluid dynamics and Euler-Euler two fluid models. Overall flow patterns were determined that included the stable spout region, the fountain region, and an annular region within the bed. The distribution of the velocity vector for two-phase flows was obtained. The mass fraction of SO2 was also predicted. The predictions show that the desulfurization rate is fastest in the annular region. The gas flux through the annular region contributes from 60 to 85% of the total gas flux. Hence the unique flow structures in a spouted bed are advantageous for enhancing desulfurization. Although the superficial velocity decreased from 1. 099 to 0. 732 meters per second the desulfurization efficiency increased by 25%. Reduced injection rates can improve desulfurization efficiency if the engineering ensures that the three stable regions are formed in the spouting bed.
Keywords：two-fluid modelspouted bedactivated carbonflue gas desulfurizationnumericalsimulation
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 7-13 )