UNIT 1 & 2 HEAT RECOVERY STEAM GENERATOR SYSTEM

Question 1

The ______________ captures recoverable heat left in the combustion turbine (CT) exhaust gas to preheat the incoming heat recovery steam generator feedwater. (REF. 2.2 HRSG SD)

Answer 1

economizer

Question 2

The exhaust gas flows from the CT and is ducted to the gas inlet of the HRSG through ______________ and then exhausts through the stack, in that order. (REF. 2.2.1 HRSG SD)

Answer 2

the duct burner, the HRSG, the CO catalyst, the ammonia injection grid, the SCR catalyst, and the economizer

Question 3

The feedwater enters the steam drum through a ____________________________, which distributes the feedwater evenly throughout the drum. (REF. 2.2.2 HRSG SD)

Answer 3

perforated pipe along the length of the steam drum

Question 4

The __________ separates steam from the water-steam mixture and provides a continuous supply of water to the steam generating tubes in the HRSG. (REF. 2.3.2 HRSG SD)

Answer 4

steam drum

Question 5

The ____________________ convert(s) NOx in the CT exhaust gas into harmless nitrogen (N2) and water (H2O) without forming any secondary pollutants. (REF. 2.7.1 HRSG SD)

Answer 5

selective catalytic reactor