Removal of Sulphur Species using Industrial Residual Streams

In this report, the possibility for using industrial residual streams such as fly ash, green liquor dregs and lime have been investigated for the removal of sulphur species derived from biomass gasification.

An experimental study has been performed in which four different sulphur species, amongst others H2S, have been removed. The performance of different materials is reported, and the best alternative seems to be the use of fly-ash from biomass combustion, after slaking it with water. The system requires a relative carbon dioxide-free gas but can provide a rather low-cost alternative to traditional sulphur removal.