A process performing sulphur recovery and tail gas treatment in two catalytic reactor units exceeded guaranteed recovery limits from start-up.

In the past, authorities mostly asked for a sulphur recovery efficiency as per local legislation, equivalent to a certain emission level for SO2. Other emissions, notably CO2, were of much less or even no concern. However, since the climate change debate focuses on limiting all emissions, CO2 has become important.

Smartsulf is a relatively new process, but already well proven to minimise sulphur emissions.