power plant construction and qa/qc section 2.4– boiler auxiliaries engineering technology division
TRANSCRIPT
Power Plant Construction and QA/QC
Section 2.4– Boiler Auxiliaries
Engineering Technology Engineering Technology DivisionDivision
2
Overview
Section 2.4– Boiler Auxiliaries
• Introduction
• Burners
• Igniters
• Fans
• Air Heaters
• Fuel Prep and Handling
• Pulverized Coal
• Stokers
3
Introduction
Section 2.4– Boiler Auxiliaries
• Auxiliaries allow more heat to be produced.
• Minimizing heat loss is key to maximizing output.
• Efficiency is the key to generation.
• Combustion needs oxygen so airflow is key to heat production.
• Fuel type and size is key to combustion rate.
• Sizing of Auxiliaries is critical.
4
Introduction
Section 2.4– Boiler Auxiliaries
Power Output MW Turbine
Steam Flow Temperature and Pressure
Boiler Capacity Auxiliaries
Under Capacity Over Capacity
Wasted Costs
Wasted Energy
< Desired MW
Maximum Operation
5
Burners
Section 2.4– Boiler Auxiliaries
• Fuel
• Natural Gas
• Oil
• Coal Dust
• Quantity
• Boiler Size
6
Igniters - Gas
Section 2.4– Boiler Auxiliaries
7
Section 2.4– Boiler Auxiliaries
Igniters - Oil
8
Section 2.4– Boiler Auxiliaries
Igniters - Combination
9
Fans –Boiler Supply
Section 2.4– Boiler Auxiliaries
10
Section 2.4– Boiler Auxiliaries
Fans –Boiler Exhaust
11
Air Heaters
Section 2.4– Boiler Auxiliaries
Air Temperature
Air Density
Boiler Heat
Boiler Efficiency
12
Fuel Prep and Handling - Coal
Section 2.4– Boiler Auxiliaries
13
Crushed Coal
Section 2.4– Boiler Auxiliaries
14
Pulverized Coal
Section 2.4– Boiler Auxiliaries
50 um - .002”
15
Stoker
Section 2.4– Boiler Auxiliaries
16
Questions?
Section 2.4– Boiler Auxiliaries