CFD Approach for Unburned Carbon Reduction in Pulverized Coal Boilers
نویسندگان
چکیده
منابع مشابه
On Unburned Carbon in Coal Ash from Various Combustion Units
Work is focused to the study of unburned carbon in ash from coal (and wastes) combustion in 8 combustion tests at 3 fluidised-bed power station, at co-combustion of coal and wastes (also at fluidized bed) and at bench-scale unit simulating coal combustion in small domestic furnaces. The attention is paid to unburned carbon contents in bottom ashes and fly ashes at these 8 combustion tests and t...
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Pulverized coal boilers, commonly used in the power and heat-generating industries, constitute one of the most important sources of fine particulate matter (PM) emitted to ambient air. The evidence on airborne PM and its public health impact is consistent in showing adverse health effects at exposures currently experienced by urban populations in both developed and developing countries [1]. The...
متن کاملOverview of Coal Ash Deposition in Boilers
The management of coal ash in utility boilers continues to be one of the most important fuel property considerations in the design and operation of commercial boilers. The behavior of mineral matter in coal can significantly influence furnace sizing, heat transfer surface placement, and convection pass tube spacing. Ironically, many of the more reactive, low rank U. S. coals must have larger fu...
متن کاملA New Route for Unburned Carbon Concentration Measurements Eliminating Mineral Content and Coal Rank Effects
500 million tons of coal fly ash are produced worldwide every year with only 16% of the total amount utilized. Therefore, potential applications using fly ash have both environmental and industrial interests. Unburned carbon concentration measurements are fundamental to effective fly ash applications. Current on-line measurement accuracies are strongly affected by the mineral content and coal r...
متن کاملPrediction of the Unburned Carbon Content of Fly Ash in Coal-Fired Power Plants
Prediction of carbon content in fly ash is a valuable index in both designing and optimizing coal-fired boilers. In this study, methods of multiple regression (MR), decision trees (DT), and support vector regression (SVR) were used for prediction of unburned carbon content of fly ash in a 300-MW power plant with a tangentially fired furnace using a low-NOx concentric firing system. Twenty-one b...
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ژورنال
عنوان ژورنال: Energy & Fuels
سال: 2012
ISSN: 0887-0624,1520-5029
DOI: 10.1021/ef201700a