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Pulverised Coal - an overview | ScienceDirect Topics
UG-Mat Coal Bottom Ash/Boiler Slag | Recycled Materials Resource Ce
Pulverized coal is used in many utility boilers. Due to the small particle size, pulverized coal can be transported pneumatically. Coal particles contain four major components: moisture, volatiles, char, and ash. When heated, the moisture is dried and the volatiles are devolatized. The volatile vapor mixes with oxygen and the mixture burns.
COAL CHARACTERISTICS - Purdue University
The chemical composition of bottom ash and boiler slag particles is controlled by the source of the coal and not by the type of furnace. Coal ash is composed primarily of silica (SiO
Basic Boiler Calculations Calculate the feedwater composition (impurities) from make up and condensate analysis below Total Hardness M Alkalinity TDS Silica % Condensate Make up 2 200 350 6 Condensate 0 10 15 0 50 Feed water 1 105 182.5 3
Emissions from coal combustion depend on coal type and composition, the design type and capacity of the boiler, the firing conditions, load, the type of control devices, and the level of equipment maintenance. Emissions from anthracite coal firing primarily include particulate matter
Although coal is primarily a mixture of carbon (black) & hydrogen (red) atoms, sulfur atoms (yellow)are also trapped in coal, primarily in two forms. In one form, (1)the sulfur is a separate particle often linked with iron (green, pyritic sulfur) with no connection to the carbon atoms, as in the center of the drawing
The Types of Coal: Composition, Usage, and Energy Value