id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-13117		cet-13117		6	.pdf	application/pdf	2751	107	47	Due to the high mixing degree of pulverized coal and combustion air in tangential boilers, they are mainly used in South African power plants for coal combustion. The combustion air inlet temperature, pressure, density and viscosity of coal vary by boiler level.	cache/cet-13117.pdf	txt/cet-13117.txt