Stack Diagram

The Stack Diagram result screen shows the major flows exiting the stack for all plant types:

PC: GET RESULTS: Stack: Stack Diagram

Each result is described briefly below:

•Area 1: Flue Gas Out

•Temperature Out: Temperature of the flue gas exiting the stack.

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

•Fly Ash Out: Mass flow rate of solids in the flue gas exiting the stack.

•Flue Gas Emission

•Area 2a

•CO2: This is the number of pounds of CO2 vented to the air for every MBtu.

•Equivalent SO2: This is the number of pounds of Equivalent SO2 vented to the air for every MBtu.

•Equivalent NO2: This is the number of pounds of Equivalent NO2 vented to the air for every MBtu.

•Particulate (PC and NGCC) or Ash (IGCC): This is the number of pounds of Particulate vented to the air for every MBtu.

•Area 2b (PC only)

•Tot. SOx as SO2: This is the emission rate of SOx as equivalent SO2 leaving the stack.

•Tot. NOx as NO2: This is the emission rate of NOx as equivalent NO2 leaving the stack.

•Area 3: Mercury Emission (not shown for IGCC)

•Elemental: This is the number of pounds of Elemental Mercury vented to the air for every MBtu.

•Oxidized: This is the number of pounds of Oxidized Mercury vented to the air for every MBtu.

•Total: This is the number of pounds of Total Mercury vented to the air for every MBtu.

•Area 4: Mercury Exiting Stack (not shown for IGCC)

•Elemental Mercury: Mass flow rate of elemental mercury (Hg0) in the flue gas exiting the stack.

•Oxidized Mercury: Mass flow rate of oxidized mercury (Hg+2) in the flue gas exiting the stack.

•Total Mercury: Mass flow rate of total mercury in the flue gas exiting the stack (elemental, oxidized, and particulate).

•Area 5 (not shown for NGCC)

•Makeup Water (PC only): This is the total makeup water that is required by the plant.

•Flue Gas (IGCC only)

•Primary: This is the portion of the flue gas that comes from the combustor.

•Other: This is the portion of the flue gas that comes from other parts of the plant (e.g., Beavon -Stretford)