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Development of Sorbent Manufacturing Technology by Agitation Fluidized Bed Granulator (AFBG)

Jaehyeon Park^† Jaehun Kim Sung-Ho Cho Keun-Hee Han Chang-Keun Yi Gyoung-Tae Jin

Energy and Environment Research Department, Korea Institute of Energy Research (KIER), Taejon, Korea

jhpark@kier.re.kr

Korean Journal of Chemical Engineering, September 1999, 16(5), 659-663(5), 10.1007/BF02708148

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Abstract

Thousands of ppmv of hydrogen sulfide included in coal gas should be reduced to less than a hundred ppmv in the case of IGCC to prevent a gas turbine from being corroded, and few ppmv to prevent the performance of electrodes from declining in the case of MCFC. In the present paper a laboratory scale AFBG (Agitation Fluidized Bed Granulator) is made and improved. The sorbent for the removal of hydrogen sulfide is produced using an agitation fluidized bed granulator (ZnO 1.5 mole+TiO₂ 1.0 mole bentonite 5.0 wt%). The techniques for fluidizing fine particles, classified in Geldart C group, in a fluidized bed are developed by installing an agitator blade in a fluidized bed granulator. The fine particles are fluidized and granulated successfully by using the techniques. Statistical, spectral and chaos analyses with granulated sorbent (100-300 ㎛) are performed to investigate the hydrodynamics of granulates in a fluidized bed. The average absolute deviation, power spectral density functions, phase space trajectories, and Kolmogorov entropy obtained from pressure flutuation are plotted as a function of fluidizing velocity. It is shown that the Kolmogorov entropy implying the rate of generation of information can be applied to the control of fluidization regimes.

Keywords

Fluidized Bed Granulator Agitator Fine Particles Chaos Analysis Kolmogorov Entropy

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