Atomizing

Air

Fired North South North South Fan % Measured NOx Emissions

Pellets Chamber Chamber Chamber Chamber Damper Total Stoichiometric Total lbs/million

Date LTPH Burner Burner Total Burner Burner Total % Open ACFM lbs/min Air PPM lbs/hr PPM lbs/hr PPM lbs/hr PPM lbs/hr lbs/hr lbs/LTP Btu's

0 #DIV/0! 0

HE Stack #2 WBE Stack #3 WBE Stack #4

Hibtac Pelletizing Line 3 NOx Reduction Study

By Increasing Atomizing Air Fan Airflow

Natural Gas (MCF/hr) Natural Gas (lbs/min)

Atomizing Air Fan

HE Stack #1
Probe

Length

Into

Type Pelet Stack

Mine Pellets Line Stack Date Time inches NOx CO O2

Hibtac Standard 3 Windbox Exhaust #3 10/1/02 13:20 3.47 111

Hibtac Standard 3 Windbox Exhaust #3 11 114

Hibtac Standard 3 Windbox Exhaust #3 20.4 113

Hibtac Standard 3 Windbox Exhaust #3 33.9 114

Hibtac Standard 3 Windbox Exhaust #3 71.1 115

Hibtac Standard 3 Windbox Exhaust #3 84.6 114

Hibtac Standard 3 Windbox Exhaust #3 94

Hibtac Standard 3 Windbox Exhaust #3 102

Hibtac Standard 3 Windbox Exhaust #3 3.47

Hibtac Standard 3 Windbox Exhaust #3 11

Hibtac Standard 3 Windbox Exhaust #3 20.4

Hibtac Standard 3 Windbox Exhaust #3 33.9

Hibtac Standard 3 Windbox Exhaust #3 71.1

Hibtac Standard 3 Windbox Exhaust #3 84.6

Hibtac Standard 3 Windbox Exhaust #3 94

Hibtac Standard 3 Windbox Exhaust #3 102

Hibtac Standard 3 Windbox Exhaust #3 Average 114 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 145,000 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 215.7

DSCMM = 4,104

NOx Emissions = 117 lbs/hr

CO Emissions:

Mg/M3 = 22*(28/24.2) = #DIV/0!

DSCMM = 4,104

CO Emissions = #DIV/0! lbs/hr

Natural Gas Burner Primary Air = 288 lbs/min

Natural Gas = 118 MCF/hr

Natural Gas = 83 lbs/min

Hibtac Line 3 Emission Testing For NOx and CO

100% Natural Gas Firing

Atomizing Air Fan Damper 50% Open 

Emission Reading (PPM)
Probe

Length

Into

Type Pelet Stack

Mine Pellets Line Stack Date Time feet NOx CO O2

Hibtac Standard 3 Windbox Exhaust #4 10/1/02 13:20 3.47 132

Hibtac Standard 3 Windbox Exhaust #4 11 133

Hibtac Standard 3 Windbox Exhaust #4 20.4 137

Hibtac Standard 3 Windbox Exhaust #4 33.9 138

Hibtac Standard 3 Windbox Exhaust #4 71.1 138

Hibtac Standard 3 Windbox Exhaust #4 84.6 138

Hibtac Standard 3 Windbox Exhaust #4 94 138

Hibtac Standard 3 Windbox Exhaust #4 102 138

Hibtac Standard 3 Windbox Exhaust #4 3.47

Hibtac Standard 3 Windbox Exhaust #4 11

Hibtac Standard 3 Windbox Exhaust #4 20.4

Hibtac Standard 3 Windbox Exhaust #4 33.9

Hibtac Standard 3 Windbox Exhaust #4 71.1

Hibtac Standard 3 Windbox Exhaust #4 84.6

Hibtac Standard 3 Windbox Exhaust #4 94

Hibtac Standard 3 Windbox Exhaust #4 102

Hibtac Standard 3 Windbox Exhaust #4 Average 137 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 148,000 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 259.5

DSCMM = 4,188

NOx Emissions = 144 lbs/hr

CO Emissions:

Mg/M3 = 22*(28/24.2) = #DIV/0!

DSCMM = 4,188

CO Emissions = #DIV/0! lbs/hr

Natural Gas Burner Primary Air = 288 lbs/min

Natural Gas = 118 MCF/hr

Natural Gas = 83 lbs/min

Hibtac Line 3 Emission Testing For NOx and CO

100% Natural Gas Firing

Atomizing Air Fan Damper 50% Open 

Emission Reading (PPM)
Probe

Length

Into

Type Pelet Stack

Mine Pellets Line Stack Date Time feet NOx CO O2

Hibtac Standard 3 Hood Exhaust #1 3.47

Hibtac Standard 3 Hood Exhaust #1 11

Hibtac Standard 3 Hood Exhaust #1 20.4

Hibtac Standard 3 Hood Exhaust #1 33.9

Hibtac Standard 3 Hood Exhaust #1 71.1

Hibtac Standard 3 Hood Exhaust #1 84.6

Hibtac Standard 3 Hood Exhaust #1 94

Hibtac Standard 3 Hood Exhaust #1 102

Hibtac Standard 3 Hood Exhaust #1 3.47

Hibtac Standard 3 Hood Exhaust #1 11

Hibtac Standard 3 Hood Exhaust #1 20.4

Hibtac Standard 3 Hood Exhaust #1 33.9

Hibtac Standard 3 Hood Exhaust #1 71.1

Hibtac Standard 3 Hood Exhaust #1 84.6

Hibtac Standard 3 Hood Exhaust #1 94

Hibtac Standard 3 Hood Exhaust #1 102

Hibtac Standard 3 Hood Exhaust #1 Average #DIV/0! #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 150,952 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = #DIV/0!

DSCMM = 4,272

NOx Emissions = #DIV/0! lbs/hr

CO Emissions:

Mg/M3 = 22*(28/24.2) = #DIV/0!

DSCMM = 4,272

CO Emissions = #DIV/0! lbs/hr

Natural Gas Burner Primary Air = 249 lbs/min

Natural Gas = 110 MCF/hr

Natural Gas = 78 lbs/min

Hibtac Line 3 Emission Testing For NOx and CO

100% Natural Gas Firing

Atomizing Air Fan Damper 25% Open 

Emission Reading (PPM)
Probe

Length

Into

Type Pelet Stack

Mine Pellets Line Stack Date Time feet NOx CO O2

Hibtac Standard 3 Hood Exhaust #2 3.47

Hibtac Standard 3 Hood Exhaust #2 11

Hibtac Standard 3 Hood Exhaust #2 20.4

Hibtac Standard 3 Hood Exhaust #2 33.9

Hibtac Standard 3 Hood Exhaust #2 71.1

Hibtac Standard 3 Hood Exhaust #2 84.6

Hibtac Standard 3 Hood Exhaust #2 94

Hibtac Standard 3 Hood Exhaust #2 102

Hibtac Standard 3 Hood Exhaust #2 3.47

Hibtac Standard 3 Hood Exhaust #2 11

Hibtac Standard 3 Hood Exhaust #2 20.4

Hibtac Standard 3 Hood Exhaust #2 33.9

Hibtac Standard 3 Hood Exhaust #2 71.1

Hibtac Standard 3 Hood Exhaust #2 84.6

Hibtac Standard 3 Hood Exhaust #2 94

Hibtac Standard 3 Hood Exhaust #2 102

Hibtac Standard 3 Hood Exhaust #2 Average #DIV/0! #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 157,796 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = #DIV/0!

DSCMM = 4,466

NOx Emissions = #DIV/0! lbs/hr

CO Emissions:

Mg/M3 = 22*(28/24.2) = #DIV/0!

DSCMM = 4,466

CO Emissions = #DIV/0! lbs/hr

Natural Gas Burner Primary Air = 249 lbs/min

Natural Gas = 110 MCF/hr

Natural Gas = 78 lbs/min

Hibtac Line 3 Emission Testing For NOx and CO

100% Natural Gas Firing

Atomizing Air Fan Damper 25% Open 

Emission Reading (PPM)