METHOD FOR REMOVING NOX, DUST AND HCL IN WASTE GAS

摘要

PURPOSE:To remove HCl as well as NOx as the main target and to reduce the consumption of slaked lime in the succeeding bag filter-type dry HCl removing stage by blowing NH3 or urea into the device. CONSTITUTION:The treating device is used to remove the NOx, dust and HCl in the waste gas from a city refuse incinerator. In this case, an NH3 or urea- blowing non-catalytic denitration method is combined with a slaked lime-blowing bag filter-type dry HCl removal method, and consequently the excess of NH3 over the NH3 spent in denitration is allowed to react effectively with the HCl in the waste gas.