Process for reducing the total sulphur content of a high...

Details Process for reducing the total sulphur content of a high... Process for reducing the total sulphur content of a high...

B - Operations, Transporting

01

D

23/346

B01D 53/34 (2006.01) B01D 53/50 (2006.01) C01B 17/04 (2006.01)

Patent

CA 1183330

A B S T R A C T PROCESS FOR REDUCING THE TOTAL SULPHUR CONTENT OF A HIGH CO2-CONTENT FEED GAS In the process for reducing the total sulphur content of a high CO2-content feed gas stream, the feed gas is first passed to a column for the selective absorption of H2S. The unabsorbed, high CO2-content gas is then routed to a reduction step where it is combined with Claus off-gases and the sulphur compounds are reduced to H2S. The treated gas is then passed to a second column for the selective absorption of H2S 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 sulphur.

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