β Scribed by R.P. Gupta; T.F. Wall
No coin nor oath required. For personal study only.
One of the most important parameters characterizing the radiative behavior of a fly ash cloud in p.f. furnaces has been found to be the optical properties of the ash as determined by the complex refractive index. The available data on this property are limited and inconsistent and there has been previously only one in situ measurement on a large boiler. The value of the absorption index thus obtained was not only different from other values quoted in the literature, but ais? was an order of magnitude higher when compared with those of pure silica and alumina mixtures, the major constituents of the fly ash particles. To eliminate this confusion the in situ measurements were repeated with greiier precision and laboratory measurements (infrared absorption spectra) were made on fly ashes from different coals. These measurements suggest that high reported values of the absorption index of fly ash particles may be due to unburned char present at the furnace exit where measurements were made or where ash is sampled.
π SIMILAR VOLUMES
In this study, the formation mechanism and the behavior of submicron fly ash (SFA) (larger than 0.1 #m) in the industrial type pulverized-coal combustion furnace was examined experimentally by using two different models of furnace: a turbulent furnace, which was designed to realize practical combust
## Abstract Fly ash (FA) is a byβproduct of coal combustion in power plants whose characteristics depend on the type of combustion process and coal properties. A large proportion of FA is used by the cement and concrete industries, but most is disposed to landfill, potentially causing environmental
## Abstract An experiment was conducted for two years in northwest India to explore the feasibility of using coal fly ash for reclamation of waterlogged sodic soils and its resultant effects on plant growth in padiβwheat rotation. The initial pH, electrical conductivity, exchangeable sodium percent