Abstract
We have developed the combustion furnace for pulverized wooden charcoal .Wooden charcoal has similar properties of Anthracite. It has a little volatile matter and a lot of fixed carbon. It was expected that it is difficult to combust it stably. It is important for stable combustion of wooden charcoal to describe as follows. (1) Even solid fuel including a little volatile matter can be combusted stably (2)Temperature of furnace wall is always kept lower than the softening point of fly ash from wooden charcoal combustion and slagging must be controlled (3) Growth of NOx in the high temperature combustion zone msut be restrained. We have achieved the development of the combustion furnace for pulverized wooden charcoal with abilities of controlling slagging and growth of NOx by way of slow combustion and flue gas recirculation and in-furnace NOx reduction.
