Modeling of the flue gas desulfurization in a CFB riser using the Eulerian approach with heterogeneous drag coefficient

作者: Cheng Chen , Fei Li , Haiying Qi

DOI: 10.1016/J.CES.2011.11.035

关键词: Flue-gas desulfurizationThermodynamicsSorbentFluidizationReaction rateMultiphase flowVolume (thermodynamics)ChemistryDrag coefficientDrag

摘要: Abstract Flue gas desulfurization (FGD) in a CFB at moderate temperatures with the T–T sorbent, hydrated calcium-based sorbent was numerically simulated using Eulerian approach two drag models for heterogeneous gas–solid flow, one is an EMMS-based theoretical model (QL-EMMS), other experimental (O-S). The QL-EMMS analyzed terms of cluster parameters, reduction and modeling by comparing data results O-S model. Results heterogeneity index show that more accurate than models, but there are still some differences from due to inaccurate description solid volume fractions clusters. factors influencing temperature were then investigated based on Predictions efficiency reaction rate indicate higher homogeneous distributions lead efficiencies. time also has important effect desulfurization.

参考文章(28)
Li Fei, Haiying Qi, Changfu You, Analysis of Turbulence Modulation in a Sudden‐Expansion Flow Laden with Fine Particles MULTIPHASE FLOW: THE ULTIMATE MEASUREMENT CHALLENGE: Proc.of The 5th Int. Symp. on Measurement Techniques for Multiphase Flows (5th ISMTMF); 2nd Int. Wrkshp.on Process Tomography (IWPT-2) (As a part of ISMTMF); 5th ISMTMF/IWPT-2, 2006-Macau/Zhuhai). ,vol. 914, pp. 69- 79 ,(2007) , 10.1063/1.2747413
Haiying Qi, Fei Li, Bing Xi, Changfu You, Modeling of drag with the eulerian approach and EMMS theory for heterogeneous dense gas-solid two-phase flow Chemical Engineering Science. ,vol. 62, pp. 1670- 1681 ,(2007) , 10.1016/J.CES.2005.07.002
Veeraya Jiradilok, Dimitri Gidaspow, Somsak Damronglerd, William J. Koves, Reza Mostofi, Kinetic theory based CFD simulation of turbulent fluidization of FCC particles in a riser Chemical Engineering Science. ,vol. 61, pp. 5544- 5559 ,(2006) , 10.1016/J.CES.2006.04.006
Qian Lin, Fei Wei, Yong Jin, Transient density signal analysis and two-phase micro-structure flow in gas-solids fluidization Chemical Engineering Science. ,vol. 56, pp. 2179- 2189 ,(2001) , 10.1016/S0009-2509(00)00499-1
Yong-Hwan Noh, Kyeongwon Yoo, Internet, inequality and growth Journal of Policy Modeling. ,vol. 30, pp. 1005- 1016 ,(2008) , 10.1016/J.JPOLMOD.2007.06.016
Wei Ge, Jinghai Li, Physical mapping of fluidization regimes—the EMMS approach Chemical Engineering Science. ,vol. 57, pp. 3993- 4004 ,(2002) , 10.1016/S0009-2509(02)00234-8
Jie Zhang, Changfu You, Haiying Qi, Changhe Chen, Xuchang Xu, Effect of solids concentration distribution on the flue gas desulfurization process. Environmental Science & Technology. ,vol. 40, pp. 4010- 4015 ,(2006) , 10.1021/ES060665M
Weigang Dong, Wei Wang, Jinghai Li, A multiscale mass transfer model for gas-solid riser flows: Part II - Sub-grid simulation of ozone decomposition Chemical Engineering Science. ,vol. 63, pp. 2811- 2823 ,(2008) , 10.1016/J.CES.2008.01.039