METHOD FOR THE CATALYTIC REMOVAL OF SULPHUR DIOXIDE FROM EXHAUST GASES

摘要

The invention relates to a method for the catalytic removal of sulphur dioxide from exhaust gases in two reactors, wherein an active carbon catalyst is applied to the first reactor. The method comprises: a) providing an exhaust gas having a water content of less than 1g H2O/Nm3 and a SO2 content of at least 5 ppm; b) supplying the exhaust gases to a first reactor; c) catalytic converting of the SO2 to gaseous SO3 in the first reactor by the active carbon catalyst, wherein the catalytic conversion occurs on the active carbon catalyst at a temperature of below 100°C; d) supplying the pre-cleaned exhaust gases from the first reactor to a second reactor; e) converting the SO3 to H2SO4 together with water in the second reactor.