Coal Combustion

Coal combustion is a large and complex subject. This class will focus on pulverized coal combustion at a large utility boiler. A good understanding of coal quality is helpful in understanding many of the issues discussed in this class.

Introduction to Coal Combustion • Intro to Coal Combustion Video
• Good Pulverizers help plants cope
with coal quality issues
• Changing Fuel Specs EPRI 1994
• Coal Specifications Quiz Basic Pulverizer Operation
Mill Wear
"Primary Air • Calculation-of-Pulverizer-Minimum-
Primary-Airflow-and-Proper-Air-to-Fuel-
Relationship ICT
• High Primary flow issues with Low NOx
burners Quiz"
"HGI and Mill Capacity • Mill Capacity Excel spreadsheet
• Calculating PA Inlet Temperature Video
• PA Inlet Temp Excel spreadsheet
•Quiz"
Why Test Fineness
ASTM D 197 Pulverized Coal Sampling
and Testing
Coal Reactivity
ASTM D388 Coal Rank
• Quiz
Air Flow Basics
Combustion Calculations
Air Heater Leakage
Storm AH performance
Heat Rate and Boiler Efficiency
Laboratory methods for Predicting Perfomance
Wall Slag
• Wall Slag with Low Rank coals, Low CV
• Understanding Slag Paper
• Fireside Deposits in Large Boilers
Quiz
Fouling Deposits - Convection Pass
Using High Sodium Coal
High Calcium Coal Fouling
Quiz
Electrostatic Precipitators
Sizing and Costing of Electrostatic Precipitators
Quiz
Coal Blending