04163043 is referenced by 18 patents and cites 10 patents.

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.

Title
Process for removing H.sub.2 S and CO.sub.2 from gases and regenerating the adsorbing solution
Application Number
5/889803
Publication Number
4163043
Application Date
March 24, 1978
Publication Date
July 31, 1979
Inventor
Sigismond Franckowiak
Rueil Malmaison
FR
Andre Deschamps
Noisy le Roi
FR
Claude Dezael
Maisons Laffitte
FR
Agent
Millen & White
Assignee
Institut Francais du Petrole
FR
IPC
B01D 53/34
View Original Source