Process for desulfurizing gases

Details Process for desulfurizing gases Process for desulfurizing gases

1974-03-20

1976-01-20

Peters, G. O.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423222, C01B 1704

Patent

active

039339947

ABSTRACT:
A desulfurizing process wherein a gas stream containing SO.sub.2 is contacted with a citric acid or citrate-containing solution, and a gas stream containing H.sub.2 S is contacted with the resulting solution, whereby elemental sulfur is precipitated and removed. The rate of flow of the respective gases contacting the aforesaid solution is such that the amount of H.sub.2 S and SO.sub.2 contained in the solution after said solution has been contacted with the gas streams is substantially in the ratio of two mols of H.sub.2 S to one mol of SO.sub.2. A portion at least of the solution from which elemental sulfur is removed is passed to the first step of the process, for contacting the gas stream containing SO.sub.2.

REFERENCES:
patent: 515084 (1894-02-01), Iles
patent: 925751 (1909-06-01), Carpenter
patent: 2031802 (1936-02-01), Tyrer
patent: 2729543 (1956-01-01), Keller

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