Process for desulfurizing a h2s -containing gas

Details Process for desulfurizing a h2s -containing gas Process for desulfurizing a h2s -containing gas

B - Operations, Transporting

01

D

B01D 53/52 (2006.01) B01D 53/75 (2006.01) B01D 53/86 (2006.01) C01B 17/027 (2006.01) C01B 17/04 (2006.01)

Patent

CA 2170845

The H2S-containing gas is passed through at least one bed of a catalyst rich in metal oxide and subsequently through a final cleaning bed. On the catalyst rich in metal oxide and in the final cleaning bed elementary sulfur is deposit- ed, which is removed by a regeneration treatment carried out periodically. The final cleaning bed constitutes a fil- ter bed for the adsorption of elementary sulfur and con- sists of a granular adsorbent, which is different from the catalyst rich in metal oxide. A gas coming from the cata- lyst rich in metal oxide is supplied to the filter bed at temperatures in the range from 20 to 180C, which gas con- tains at least 250 mg elementary sulfur per Nm3 gas. From the filter bed a desulfurized gas is withdrawn, whose con- tent of elementary sulfur is not more than 30 % of the con- tent of elementary sulfur when entering the filter bed.

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