BENCH-SCALE DEMONSTRATION OF HOT-GAS DESULFURIZATION TECHNOLOGY [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: 19 pages : digital, PDF file
Additional Creators: United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

The U.S. Department of Energy (DOE), National Energy Technology Laboratory (NETL), is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal-derived fuel-gas) streams of integrated gasification combined-cycle (IGCC) power systems. The hot gas cleanup work seeks to eliminate the need for expensive heat recovery equipment, reduce efficiency losses due to quenching, and minimize wastewater treatment costs. Hot-gas desulfurization research has focused on regenerable mixed-metal oxide sorbents that can reduce the sulfur in coal-derived fuel-gas to less than 20 ppmv and can be regenerated in a cyclic manner with air for multicycle operation. Zinc titanate (Zn₂TiO₄ or ZnTiO₃), formed by a solid-state reaction of zinc oxide (ZnO) and titanium dioxide (TiO₂), is currently one of the leading sorbents. Overall chemical reactions with Zn₂TiO₄ during the desulfurization (sulfidation)-regeneration cycle are shown. The sulfidation/regeneration cycle can be carried out in a fixed-bed, moving-bed, or fluidized-bed reactor configuration. The fluidized-bed reactor configuration is most attractive because of several potential advantages including faster kinetics and the ability to handle the highly exothermic regeneration to produce a regeneration offgas containing a constant concentration of SO₂.

Report Numbers

E 1.99:ac21-93mc30010--32
ac21-93mc30010--32

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Note

Published through SciTech Connect.
07/01/1999.
"ac21-93mc30010--32"
Unknown.
National Energy Technology Lab., Pittsburgh, PA (US)
National Energy Technology Lab., Morgantown, WV (US)

Funding Information

AC21-93MC30010

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