プロパン予混合気の触媒燃焼に関する研究

概要

論文の詳細を見る
The catalytic combustion of a lean premixed propane mixture was studied below the catalyst temperature of 650℃ and without gas phase reaction, using a platinum-impregnated foam catalyst. The temperature distribution in the catalyst plate and the composition of the exhaust gas were measured for air ratios of about 2.2 to 5.8 and heat loads 43 kw/m^2 to 115 kw/m^2 under stable burning conditions. Since the maximum temperature was observed very near the inlet of the catalyst plate, it is thought that the reaction rate of the catalyst is high and the combustion reaction zone is narrow. When the air ratio was decreased while keeping the heat load constant, the maximum temperature in the catalyst increased, but the outlet surface temperature of the catalyst plate was almost constant. The temperature distribution of the outlet surface of the catalyst plate was influenced by natural convection flow and showed higher temperature in the upper region. The combustion efficiency was strongly related to the catalyst temperature and showed almost the same valaue when the maximum temperatures agreed. The range of stable catalytic combustion was investigated and its relation to the catalyst thickness was found.
一般社団法人日本機械学会の論文
1993-02-25