Numerical Simulation of Waste Combustion Characteristics in Incinerator-waste Heat Boiler under Different Loads
In order to reveal the influence law of load fluctuation on waste combustion process in waste incinerator-waste heat boiler of waste in-cineration power plant,the combustion characteristics of waste in the furnace under different loads were studied for a waste incineration waste heat boiler with a daily capacity of 700 t/d in a city,and the temperature field and mass fraction distribution of each gas in the furnace under different loads were calculated separately by using Fluent and FLIC coupling method.The results show that the average outlet temperature of the waste heat boiler increases from 939.49 K to 1 039.99 K,the outlet oxygen mass fraction decreases from 10.03％to 6.19％,and the outlet carbon dioxide mass fraction increases from 10.34％to 13.91％with the increase of load.When the waste incinerator is operated under low load conditions,the internal temperature of the furnace chamber is lower compared to the high load,which may cause problems such as pollu-tant emissions exceeding the standard;when it is operated under high load conditions,the combustion section of the grate is delayed backward,the flame is close to the right water-cooled wall,and the thermal deviation between the left and right water-cooled walls of the furnace chamber is larger.
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维普
