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Title: Method of removing sulfur emissions from a fluidized-bed combustion process

Alkali metal or alkaline earth metal oxides are impregnated within refractory support material such as alumina and introduced into a fluidized-bed process for the combustion of coal. Sulfur dioxide produced during combustion reacts with the metal oxide to form metal sulfates within the porous support material. The support material is removed from the process and the metal sulfate regenerated to metal oxide by chemical reduction. Suitable pore sizes are originally developed within the support material by heat-treating to accommodate both the sulfation and regeneration while still maintaining good particle strength.
Authors:
 [1] ;  [1] ;  [2]
  1. (Elmhurst, IL)
  2. (Naperville, IL)
Publication Date:
OSTI Identifier:
863090
Report Number(s):
US 4091076
Resource Type:
Patent
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
method; removing; sulfur; emissions; fluidized-bed; combustion; process; alkali; metal; alkaline; earth; oxides; impregnated; refractory; support; material; alumina; introduced; coal; dioxide; produced; reacts; oxide; form; sulfates; porous; removed; sulfate; regenerated; chemical; reduction; suitable; pore; sizes; originally; developed; heat-treating; accommodate; sulfation; regeneration; maintaining; particle; strength; fluidized-bed combustion; metal sulfate; removing sulfur; combustion process; bed combustion; alkali metal; metal oxide; alkaline earth; pore size; sulfur dioxide; earth metal; metal oxides; porous support; pore sizes; support material; form metal; metal sulfates; chemical reduction; dioxide produced; oxide produced; /423/252/502/