NDLI: Attrition Behavior of Coal Ash Under Circulating Fluidized Bed Combustion Conditions

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Winter, Franz Liu, Xin
Copyright Year	2003
Abstract	The attrition behavior of ash produced from two bituminous and one anthracite coal was studied under laboratory-scale circulating fluidized bed combustor (CFBC) conditions. After the ash was produced in the oven, the ash sample with a size range from 0.1 to 1 mm was fed into the hot CFBC, which was heated by electrical heating shells and fluidized by air. The laboratory-scale CFBC was operated with using fine silica sand (40 to 80 μm) as bed material. After a certain time the operation was stopped, all particles were collected and sieving analysis was performed to obtain the actual particle size distribution (PSD) of the coal ash. The operating conditions were changed in a wide range, i.e. the bed temperature from 600 to 850°C, the fluidizing velocity from 1.2 to 2 m/s, the residence time from 60 to 120 min and the design of the cyclone. The effects of operating conditions and coal type were studied and their relative importance is discussed. Elemental analysis of the coal ashes showed that Si and Ca may play an important role during attrition.
Sponsorship	Advanced Energy Systems
Starting Page	517
Ending Page	521
Page Count	5
File Format	PDF
ISBN	0791836800
DOI	10.1115/FBC2003-129
e-ISBN	0791836754
Conference Proceedings	17th International Conference on Fluidized Bed Combustion
Language	English
Publisher Date	2003-05-18
Publisher Place	Jacksonville, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Particle size Temperature Fluidized bed combustion Shells Design Sands Ovens Heating Particulate matter Coal Ash Combustion chambers Fluidized beds
Content Type	Text
Resource Type	Article

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