To study the influences of methane on selective non-catalytic reduction (SNCR), the condition of flue gas composition was simulated on a drop tube furnace test rig, and the influences of a few of methane on SNCR temperature window, NOx reduction efficiency and ammonia slip from 650℃ to 1 150 ℃ were investigated, as well as reactivity of methane.

By using advanced commercial software CFX-TASCFLOW imported from abroad,a numerical simulation of said combined application on the W-shaped flame boilers of 300 MW unit in one power plant has been carried out,the key parameters suitable for temperature windows of SCNR being precisely calculated and analysed under different optimized combustion modes.

Reading rates of normally sighted subjects were assessed and compared with the effects of window width,the number of gray levels,and phosphene refresh rate in the vision system.