method for rueckgewinnung of sulphur and carbon disulphide in the h2s and cs2 containing air of viscose manufacturing factories

摘要

The process of 803,801 wherein suphur is produced from the H2S in the viscose plant exhaust air by passing through alkaline ferric hydroxide suspension, is modified in that nickel and/or cobalt hydroxides are contained in the ferric hydroxide suspension in amounts of 0.1 to 0.5% by weight calculated as metal. Preferably a mixture of Ni and Co hydroxide is used in the weight ratio Ni:Co of 10:1.ALSO:The process of the parent Specification wherein sulphur is produced from the H2S in the viscose plant exhaust air by passing through alkaline ferric hydroxide suspension, is modified in that Ni and/or Co hydroxides are contained in the ferric hydroxide suspension in amounts of 0.1 to 0.5% by weight calculated as metal. Preferably a mixture of Ni and Co hydroxides is used in weight ratio Ni:Co of 10:1.