Method for reducing the concentration of sulfur compounds in a s

Details Method for reducing the concentration of sulfur compounds in a s Method for reducing the concentration of sulfur compounds in a s

1983-04-04

1984-09-04

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

422 62, 106100, 106103, 432 14, B01J 800, C01B 1700, C04B 702, F27B 1500

Patent

active

044696647

ABSTRACT:
A method and apparatus for reducing the sulfur content and/or the SO.sub.2 emission in a system for calcining fine grained materials such as in the manufacture of cement utilizing a pre-calcining and a final calcining stage. The sulfur content of a process gas or of a material stream is determined and then is mixed with appropriate amounts of a dust or a raw meal in a reaction zone, the dust or raw meal containing sulfur bonding substances such as alkaline earth carbonates. The exhaust gas from which the sulfur compounds are removed by the sulfur bonding is separated from the sulfur containing solids and the exhaust gas and solids are removed from the calcining system.

REFERENCES:
patent: 4047884 (1977-09-01), Heian
patent: 4276272 (1981-06-01), Schlager et al.
patent: 4322224 (1982-03-01), Roth
patent: 4324759 (1982-04-01), Aoki et al.

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