単一懸垂石炭・水スラリー液滴の燃焼過程

概要

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Combustion behavior of a suspended CWM droplet on a silica fiber was observed in the combustion chamber and compared with that of dried CWM droplets and coal particles in order to elucidate the combustion features of actual CWM fuel. The combustion phenomena in the present experiment can be classified into three types. For small droplets at low ambient temperature, gas flames made by the emission of volatile matters are not observed preceding char combustion. With increasing ambient temperature, not only a large droplet but also small one begins to burn with gas flames, and bursting of some larger droplets occurs at high temperature when volatile matter is burning. The combustion processes of CWM droplets are almost similar to those of coal particles, but there are some difference between them. The ignition delay time of CWM is much longer than that of coal because of water evaporation. The quantity of volatile matter and char burning rate constants of CWM are smaller than those of coal at high ambient temperature.
一般社団法人日本機械学会の論文
1989-09-25