Combustion and flue gas treatment system

摘要

The combustion and flue gas treatment system (1) comprises a furnace (2) for combusting a fuel with an oxidizer generating a flue gas, ducting (15) for the flue gas connected to a NO x removal unit (3) and a SO x removal unit (6), a recirculation line (11) for recirculating a part of the flue gas back to the furnace (2). The SO x removal unit (6) is located upstream of the NO x removal unit (3) with reference to the flue gas flow, and the recirculation line (11) is connected to the ducting (15) downstream the SO x removal unit (6).