COMBUSTION CONTROL METHOD OF VERTICAL REFUSE INCINERATOR FOR INCINERATING INDUSTRIAL WASTES

摘要

PROBLEM TO BE SOLVED: To provide a combustion control method of a vertical refuse incinerator for incinerating industrial wastes capable of solving a problem in discharging burned ash by preventing welding and enlarging of a clinker and a molten matter in the vertical refuse incinerator.;SOLUTION: A re-combustion chamber RC is loaded on an upper portion of a incinerator main body MB through an exhaust gas mixing means GM, a burned ash discharging mechanism AD is mounted at a lower portion of the incinerator main body, and a flame layer t, a refuse layer u, an ember combustion layer y and an ash layer z are formed in the incinerator main body. A cooling jacket CJ is mounted on an outer periphery of a lower refractory of the incinerator main body, a re-combustion gas r generated in the re-combustion chamber is cooled by a downstream water jetting type gas cooling system 3, then a circulated gas c branched from a part of a cleaning gas p cleaned by an exhaust gas treatment system 41 is added to the primary air a distributed to at least one of the ember combustion layer y and the ash layer z, and the primary air volume corresponding to the oxygen content in the circulated gas c is reduced to keep an air excess ratio of the primary air a.;COPYRIGHT: (C)2006,JPO&NCIPI