| 摘要 |
PURPOSE:To enable effective suppression of production of thermal NOX and an unburnt matter, such as CO, UHC, through uniformity of temperature distribution during combustion, and to improve combustion efficiency, by a method wherein fuel gas and gas containing oxygen are burnt within a block formed by an air-permeable solid having an enoughly high void volume. CONSTITUTION:Air-permeable solids 24, having a lower void volume than that of an air-permeable solid forming a combustion block 12, are connected to the upstream side and the downstream side of combustion gas of said block 12. A flow distributer 16 uniforms the flow of a mixed fuel MF and simultaneously disperses it uniformly, and combustion starts under condition in which the fuel is sealed in spaces in the air-permeable solid partitioned into the blocks 12. In which case, high-efficient heat exchange takes place, and the latent heat in combustion gas is converted into a large quantity of the solid radiation heat. In this case, by the effect of solid contact, low-temperature combustion gas is increased in temperature, the temperature of high-temperature combustion gas is suppressed, and temperature is leveled on the whole to provide uniform combustion, resulting in reduction in production of thermal NOX. |
