Manganese-based sorbents for coal gas desulfurization

Gasper-Galvin, L.D.; Fisher, Edward P.; Goyette, William J.

doi:10.2172/431860

Cited by 1 publication

(1 citation statement)

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“…One of the most promising sorbents, C6-2-1100, containing MnCO, and TiO,, was tested for 3.5 cycles of sulfidatiodregeneration in a 2.21-cm diameter fixed-bed reactor. Details of this apparatus are given elsewhere [7]. Previous screening experiments on another Mn-based sorbent, C4-2, prepared by Hepworth and Slimane [SI with MnCO, and alundum, suggested that the sorbent performed better with respect to capacity and efficiency of sulfur removal with simulated Shell gas than with KRW gas.…”

Section: Methodsmentioning

confidence: 99%

Hot Coal Gas Desulfurization With Manganese-Based Sorbents

Berns¹,

Hepworth²,

Slimane³

et al. 1996

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Manganese (Mn) based hot-gas-desulfurization sorbents are under investigation for use fn Integrated Gasification Combined Cycle (IGCC) advanced electric-power-generation systems. The objective of this project is to develop a regenerable Mn-based pellet formulation that can achieve low sulfur partial pressures, has a high capacity for sulfur and sufficient strength for potential use in fluidized beds, and can be regenerated for many cycles. Fifteen different formulations of manganese sesquioxide, each with either titania or alumina, were prepared and characterized at the University of Minnesota. Each formulation was indurated under conditions sufficient to achieve 1 Ib/pellet/mm of diameter crush strength. Sulfidation screening was performed in a thermogravimetric analyzer (TGA) at 500 to 900 "C. A sorbent containing MnCO, and TiO,, which showed superior crush strength and reactivity, was selected for multi-cycle fixed-bed testing at the Morgantown Energy Technology Center (METC). excellent efficiency and capacity for sulfur removal. Good regenerabiiity was achieved with air-steam at 871 "C. Four cycles of sulfidation showed that the sorbent had

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Section: Methodsmentioning

confidence: 99%