Patent ID: 6962118

Claim:
An incinerator comprising a charging port 12 a first combustion chamber A where waste charged therein is burned, a gas collecting chamber B where gas including unburned gas generated in said first combustion chamber A is temporarily collected, a second combustion chamber C where the gas from the gas collecting chamber B is introduced together with auxiliary fuel gas and combustion air and burned at a high temperature, a reaction chamber D where the gas that has passed through said second combustion chamber C is retained therein for a required period of time before reaching an exhaust port 13 and wherein ash included in the gas is caused to precipitate, said incinerator being made in vertical construction with the vertical in-furnace space being divide by a partition wall 20 , said first combustion chamber A and said gas collecting chamber B in the furnace being located in the space below said partition wall 20 and the second combustion chamber C and said reaction chamber D being located above in the furnace space above the partition wall 20 ; said first combustion chamber A having a floor including a grate 30 , with a portion of the partition 20 ( 21 , 22 ) that constitutes a ceiling and the grate 30 in the floor being inclined to descend forward whereby waste charged through the charging port 12 into the vertical incinerator is burned while moving down from the charging port 12 forward; said gas collecting chamber B being formed as a long chamber that continues upward from a space near the distal end of said first combustion chamber A, so as to temporarily accommodate the entire gas volume including unburned gas generated in the first combustion chamber A; and said second combustion chamber C being constituted by delimiting with the partition wall 20 ( 21 , 22 ) in the ceiling of said first combustion chamber A and the partition wall 20 ( 23 ) that is a side wall of said gas collecting chamber B that continues thereto, so as to adjoin said gas collecting chamber B is introduced through a gas inlet port 40 that is formed in the partition wall 20 ( 23 ) that is the side wall of said gas collecting chamber B, and wherein the second combustion chamber C has a top portion narrowed to provide a top opening area 63 , and means providing an air curtain separating the narrow top opening 63 from the reaction chamber D located above by the air curtain.