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Received March 5, 2001
Accepted July 5, 2001
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Simultaneous Experiments of Sulfidation and Regeneration in Two Pressurized Fluidized-bed Reactors for Hot Gas Desulfurization of IGCC
Korea institute of Energy Research, Daejeon 305-343, Korea 1Department of Chemical Engineering, Chungbuk National University, Cheongju 361-763, Korea
Korean Journal of Chemical Engineering, November 2001, 18(6), 1005-1009(5), 10.1007/BF02705633
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Abstract
Hot Gas Desulfurization for TGCC is a new method to efficiently remove H2S in fuel gas with regenerable sorbents at high temperature and high-pressure conditions. The Korea Institute of Energy Research did operation of sulfidation in a desulfurizer and regeneration in a regenerator simultaneously at high pressure and high temperature conditions. The H2S concentration at exit was maintained continuously below 50 ppmv at 11,000 ppmv of inlet H2S concentration. The sorbent had little effect on the reducing power in the inlet gas in the range from 11% to 33% of H-2. As inlet H2S concentration was increased, H2S concentration in the product gas was also increased linearly. The sorbent was maintained at low sulfur level by the continuous regeneration and the continuous solid circulation at the rate of 1.58 x 10(-3) kg/s with little mean particle size change.
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