GROUP 3 SYSTEMS

HIPPS (2003)

50

High-temperature advanced furnace

2500 °F gas turbine + HRSG/turbine (+ auxiliary fuel if needed)

Advanced flue gas cleanup system + in-furnace controlsa

Improved PFBC-2 (2010)

≥50

Circulating PFBC + coal pyrolyzer

2600 °F turbine + 4,500 psi steam turbine

Hot gas filtration

In-bed limestone or dolomite

Combustion controls (+ SCR if needed)

IGAC (2010)

≥50

Oxygen- or air-blown fluidized-bed gasifier

2600 °F gas turbine (humidified)

Hot gas filtration

Hot gas desulfurization + in-bed limestone (optional)

Combustion controls (+ SCR if needed)

IGFC (2010)

≥60

Oxygen- or air-blown fluidized-bed gasifier

Molten carbonate fuel cell (1200 °F) +HRSG/turbine

Hot gas filtration

Hot gas desulfurization + in-bed limestone (optional)

Combustion controls (+ SCR if needed)

HRSG, heat recovery steam generator.

ESP, electrostatic precipitator.

FGD, flue gas desulfurization.

SCR, selective catalytic reduction.

a Final system not yet selected.



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