IECM 13.1 User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > GET RESULTS > Base Plant > 1. Boiler >

Boiler Diagram

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The Boiler Diagram result screen shows the major flows into and out of the combustion boiler:

PC: GET RESULTS: Base Plant: 1. Boiler: Boiler Diagram

Each result is described briefly below in flow order:

•Area 1: Fuel Entering the Boiler

•Fuel In: Fuel flow rate into the boiler on a wet basis. Waste products removed prior to the burners are not considered here.

•Mercury In: This is the mass flow rate of total mercury entering the boiler. The mass reflects the molecular weight of elemental mercury.

•Area 2: Boiler Performance

•Ash Ent. Flue Gas: Percent of the ash in coal exiting the boiler in the flue gas.

•Mercury Removal: Percent of the total mercury in coal removed from the boiler in the bottom ash.

•Area 3: Air Entering the Boiler

•Heated Air In: Volumetric flow rate of the air at the burners, based on the air temperature at the burners and atmospheric pressure.

•Temperature: Heated air temperature measured at the burners. This is generally determined by the combustion air temperature exiting the air preheater.

•Area 4: Water

•Boiler Makeup: This is the water flow rate into the demineralizer system (treating boiler makeup water).

•Cooling Water: This is the cooling water required for the steam cycle.

•Area 5: Flue Gas Exiting the Economizer

•Temperature Out: Temperature of the flue gas at the exit of the economizer.

•Flue Gas Out: Volumetric flow rate of the flue gas at the exit of the economizer, based on the temperature at the exit of the economizer and atmospheric pressure.

•Fly Ash Out: Total solids mass flow rate in the flue gas at the exit of the economizer. This includes ash, unburned carbon and unburned sulfur.

•Mercury Out: Total mass of mercury exiting the economizer. The value is a sum of all the forms of mercury (elemental, oxidized, and particulate).

•Area 6: Bottom Ash

•Sluice Water Makeup: Water added to the dry bottom ash. This water is added for transportation purposes.

•Dry Bottom Ash: Total solids mass flow rate of the bottom ash. This includes ash, unburned carbon and unburned sulfur. The value is given on a dry basis.

•Wet Bottom Ash: Total solids mass flow rate of the bottom ash for waste management. This includes dry bottom ash and sluice water. The value is given on a wet basis.