| 摘要 |
<p>PURPOSE:To reduce oxygen concentration and to improve carbon monoxide cleaning ability by raising and sending a combustion gas from a combustion furnace through a preheater and a cooler and sucking air from a secondary air hole through a constriction and a turbulent flow promoting material. CONSTITUTION:A preheater 103 is placed above a combustion furnace 102, a cooler 104 is set above the preheater, air is sucked from a secondary air hole 116 through a turbulent flow promoting material 116'' and a constriction 116' and an unburned gas is burnt effectively and secondarily. When air supply form the secondary air hole is increased, air supply from a primary air hole 112 to burn a fuel 110 is reduced to suppress combustion.</p> |
