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Turbines

Emission Source

Simple Cycle

Simple Cycle

Simple Cycle No SCR

Simple Cycle

Simple Cycle No SCR

Combined Cycle No SCR

Combined Cycle

Unit Size (MW)

0.3 to 2.9

2.9 to 10

2.9 to 10

>10

>10

>60

>60

Energy Consumption

(Btu/hp-hr)

13,000

13,000

11,000

11,000

11,000

6,000

6,000

NOx Emissions

(ppmvd @ 15% O2)

 (lb/MMBtu)

 (g/hp-hr)

 (lb/MWh)

25

0.093

0.55

0.90

9

0.0337

0.20

0.59

14

0.052

0.26

0.77

9

0.0337

0.17

0.50

12

0.044

0.22

0.65

15

0.056

0.15

0.45

9

0.0337

0.092

0.27

Rule 1146 — Emissions of Oxides of Nitrogen for Industrial, Institutional,

and Commercial Boilers and Process Heaters

Emission Source

Industrial, Institutional, and Commercial Boilers and Process Heaters

NOx (lb/MMBtu)

0.037

Table 4-2:  Natural Gas Turbine Emissions

Turbine Location

SoCAB

CA, U.S.

Year

1993

2010

1993

2010

Energy rate (Btu/bhp-hr)

11,000

11,000

11,000

11,000

Emissions (g/bhp-hr)

 NOx

0.4

0.17

1.7

1.0

 CO

0.83

1.0

0.83

1.0

 CO2

599

599

599

599

 CH4

0.17

0.2

0.17

0.2

 NMOG

0.01

0.01

0.01

0.01

Data Source

Huey

EEb

Huey

EE

a NSPS for NOx is 1.39 g/bhp-hr, SCAQMD Rule 1134 requirements are equivalent to 0.1 to 0.5 g/bhp-hr.  

b Engineering estimate.  BACT for gas turbines will result in 0.03 g/bhp-hr.  Newer gas turbines without SCR will have low NOx configurations

Based on a population profile of gas turbines used as natural gas prime movers (Huey 1993) and emissions data for individual makes and models of gas turbines (Urban 1980

35

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