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- W2004375064 abstract "(Communicated by H. L. Toor) Half-calcined dolomite (CaCO3 · MgO) is one of the most promising sorbents for desulfurizing fuel gas at high temperatures. For environmental reasons, the spent dolomite must be capable of regeneration for cyclic use. Regeneration by a mixed gas of H2O/CO2 has not met with success due mainly to the deterioration of sorbent reactivity with cycling. This research investigates an alternative method of regeneration using CO2 alone and its application to cyclic use. Kinetic data for first cycle regeneration are collected in a TGA system at 500 to 950°C and 1 to 21.4 atm. The effects of gas-composition, preconditioning and solid structure are also studied. The results show that regeneration by CO, is equally effective as by H2O/CO2 in terms of sorbenl reactivity. More significantly, the sorbent has shown a much slower deterioration upon cycling. Examination of solid structure by SEM and compositional profile of sulfur by XES reveals that the reaction proceeds topochemically above 700°C and homogeneously below 650°C. A transport-reaction model is developed and shown to agree closely with experimental results." @default.
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- W2004375064 date "1984-08-01" @default.
- W2004375064 modified "2023-09-27" @default.
- W2004375064 title "KINETIC AND STRUCTURAL STUDIES OF REGENERATION OF SULFIDED DOLOMITE IN CARBON DIOXIDE I THE FIRST CYCLE REGENERATION" @default.
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- W2004375064 doi "https://doi.org/10.1080/00986448408940156" @default.
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