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Published 1985 | Published
Book Section - Chapter Open

Alkali-Alumina Sorbents for Regenerable SO_2 Removal in Fluidized-Coal Combustion


Sodium and sodium-lithium oxides supported on porous alumina have been investigated as regenerable SO_2 sorbents for fluidized coal combustion. In adsorption the oxides are converted to sulfates. In regeneration, carried out by reduction with CO, the sulfates are converted back to oxides while sulfur is removed in elemental form (S_2), SO_2 and COS. The transient composition of sorbent and gaseous products was measured in a thermogravimetric analyzer and a packed-bed microreactor in order to delineate the basic chemistry of regeneration and determine conditions that maximize the yield of elemental sulfur.

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© 1985 National government publication. This work was supported by the National Science Foundation, Chemical and Process Engineering Division.

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August 19, 2023
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