| 摘要 |
<p>To reduce the NOx content in exhaust gases from cement kilns by addition of ammonia and/or ammonia-containing substances into the hot exhaust gases, it is proposed to desulphurise the exhaust gases in a dry or semi-dry manner at 50 to 100 DEG C using a mixture of cement raw meal and hydrated lime and to return the reaction products of the desulphurisation, which adsorb a majority of the ammonia used in excess, to the hot exhaust gases of the cement kiln. …<IMAGE>… </p> |
