Process for removing H.sub.2 S and CO.sub.2 from gases and regen

Details Process for removing H.sub.2 S and CO.sub.2 from gases and regen Process for removing H.sub.2 S and CO.sub.2 from gases and regen

1978-03-24

1979-07-31

Carter, Herbert T.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423 42, 423183, 423356, 423642, 423543, B01D 5334

Patent

active

041630432

ABSTRACT:
H.sub.2 S and CO.sub.2 from a waste gas are absorbed in an ammoniacal or alkali metal hydroxide solution. The resultant sodium, potassium or ammonium sulfide solution is reacted with pulverized copper oxide and the resultant copper sulfide precipitate is separated and the resultant solution of increased sodium hydroxide, potassium hydroxide or ammonia content is recycled as absorbent for hydrogen sulfide and CO.sub.2. The copper sulfide is roasted to form recyclable copper oxide and product sulfur dioxide.

REFERENCES:
patent: 2031844 (1936-02-01), Moore
patent: 2056929 (1936-10-01), Moore
patent: 2106734 (1938-02-01), Gallmar
patent: 2164141 (1939-06-01), Moore
patent: 2184923 (1939-12-01), Holtmeier
patent: 2439404 (1948-04-01), Wicker
patent: 2487577 (1949-11-01), Stanley
patent: 2878099 (1959-03-01), Breuing et al.
patent: 3846538 (1974-11-01), Renault et al.
patent: 4038366 (1977-07-01), Fukuda et al.

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