Method for supplying combustion air in vertical incinerator and vertical incinerator

Abstract

A method for supplying combustion air in a vertical incinerator according to one embodiment of the present invention is such that during incineration treatment by the vertical incinerator 1, a supplied amount of combustion air a is controlled in such a manner as to be 0.2 to 0.8 times as much as a theoretical air amount that is necessary to completely combust waste R in deposit layers, and the combustion air a is supplied in such a manner as to reduce oxygen in the combustion air a from a lower portion to an upper portion of the deposit layers.

1 . A method for supplying combustion air in a vertical incinerator in which waste is charged in a sequence into a vertical furnace to combust the waste while the combustion air is supplied to deposit layers that are formed by the waste charged into the furnace, and incineration treatment for the waste is implemented by sequentially discharging incineration ash that results after completion of the combustion from a bottom portion to outside of the furnace, the method comprising:
 controlling a supplied amount of the combustion air in such a manner as to be 0.2 to 0.8 times as much as a theoretical air amount that is necessary to completely combust the waste in the deposit layers during the incineration treatment; and   supplying the combustion air in such a manner as to reduce oxygen in the combustion air from a lower portion to an upper portion of the deposit layers.   
     
     
         2 . The method for supplying the combustion air in the vertical incinerator according to  claim 1 , wherein the combustion air is supplied only from the lower portion of the deposit layers. 
     
     
         3 . A vertical incinerator in which waste is charged in a sequence into a vertical furnace to combust the waste while combustion air is supplied to deposit layers that are formed by the waste charged into the furnace, and incineration treatment for the waste is implemented by sequentially discharging incineration ash that results after completion of the combustion from an incineration ash discharge plate disposed on a bottom portion of the furnace to outside of the furnace, the vertical incinerator comprising:
 a plurality of air blow holes provided in the incineration ash discharge plate and configured to supply the combustion air from a bottom portion of the deposit layers,   wherein the combustion air is supplied from the air blow holes during the incineration treatment; and further   a control mechanism configured to control a supplied amount of the combustion air in such a manner as to be 0.2 to 0.8 times as much as a theoretical air amount that it is necessary to completely combust the waste in the deposit layers.