| abstract |
The invention provides a waste incineration system using SNCR and SCR combined denitration, including a waste incinerator system and a flue gas treatment system; the waste incinerator system includes a waste incinerator and a control system, and the waste incinerator includes a waste incinerator for secondary flue gas. The secondary combustion chamber for combustion; the flue gas treatment system includes the injection unit in the SNCR furnace, the SCR denitrification device connected to the rear end of the exhaust pipe of the waste incinerator, and the reducing agent preparation unit that supplies ammonia for the injection unit in the SNCR furnace and the SCR denitration device; The lower part of the secondary combustion chamber includes a section of furnace chamber that is inclined, and the upper part includes a section of furnace chamber that is vertically arranged. Each of the inclined side walls is provided with a plurality of air inlet jets, and the plurality of air inlet jets inject air into the furnace chamber of the secondary combustion chamber at a certain angle to each other, and a vortex is formed in the furnace chamber of the secondary combustion chamber. The four walls of the furnace are provided with the SNCR nozzles of the injection unit in the SNCR furnace. |