Catalytic process for removing sulfur dioxide from gas streams

Details Catalytic process for removing sulfur dioxide from gas streams Catalytic process for removing sulfur dioxide from gas streams

1975-07-16

1977-05-10

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423570, 252462, B01J 800, C01B 1700, C01B 1702

Patent

active

040228703

ABSTRACT:
This application describes a process for the catalytic reduction of sulfur dioxide in gas streams containing sulfur dioxide to elemental sulfur using a reducing gas such as hydrogen or, preferably, carbon monoxide, in a reactor charged with a material represented by the formula Ln.sub.2 O.sub.3 . Co.sub.2 O.sub.3, where Ln is either Y or Gd.
In a further aspect of this invention, a gas stream containing hydrogen sulfide or carbonyl sulfide and sulfur dioxide is passed through a reaction chamber charged with Ln.sub.2 O.sub.3 . Co.sub.2 O.sub.3, where Ln is either Y or Gd, to catalytically produce at a sufficiently elevated temperature elemental sulfur with concomitant reduction of the concentrations of the undesired hydrogen sulfide or carbonyl sulfide and sulfur dioxide.

REFERENCES:
patent: 3579302 (1971-05-01), Sefton
patent: 3717699 (1973-02-01), Nicklin et al.
patent: 3888792 (1975-06-01), Hughes
patent: 3931390 (1976-01-01), Palilla et al.

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