Process for reducing the total sulfur content of a high CO.sub.2

Details Process for reducing the total sulfur content of a high CO.sub.2 Process for reducing the total sulfur content of a high CO.sub.2

1981-08-24

1982-10-26

Peters, G.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423228, 423229, C01B 1704, B01D 5334

Patent

active

043561616

ABSTRACT:
In the process for reducing the total sulfur content of a high CO.sub.2 -content feed gas stream, the feed gas is first passed to an absorption column. The unabsorbed, high CO.sub.2 -content gas is then routed to a reduction step where it is combined with Claus off-gases and the sulfur compounds are reduced to H.sub.2 S. The treated gas is then passed to a second absorption column and the unabsorbed gas is vented to the atmosphere. The fat solvent from both absorption columns is stripped in a common stripper and the stripped gas is passed to a Claus unit for conversion to elemental sulfur.

REFERENCES:
patent: 3961015 (1976-06-01), Dailey
patent: 3965244 (1976-06-01), Sykes, Jr.
patent: 3989811 (1976-11-01), Hill
patent: 4153674 (1979-05-01), Verloop et al.
patent: 4241032 (1980-12-01), Werner et al.

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