Combustion Performance of Upward-Rotary-Decoupling Combustor
The performance of an upward-rotary-decoupling combustor for burning biomass and coal gangue was studied on a 4 MW industrial grade thermal test platform.The influences of operating conditions such as first stage cone speed,excess air coefficient,and air distribution on fuel burnout rate,combustion rate,and combustion fraction were investigated.The results show that increasing the rotational cone speed and excess air coefficient have a significant promoting effect on fuel combustion;the air distribution ratio has a significant impact on the performance of the burner.When the primary air ratio is too low,the fuel cannot burn normally.When the primary air ratio is too high,the burnout rate,combustion rate,and unburned fraction of the fuel all deteriorate compared to the optimal air ratio.The optimal air ratio for the biomass fuel used in this article is a primary air ratio of 0.4-0.6.
upward-rotary-decoupling combustorcombustion performanceoptimal air ratio
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