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 9:55 3.47 103

Hibtac Standard 3 Windbox Exhaust #3 11 105

Hibtac Standard 3 Windbox Exhaust #3 20.4 104

Hibtac Standard 3 Windbox Exhaust #3 33.9 105

Hibtac Standard 3 Windbox Exhaust #3 71.1 105

Hibtac Standard 3 Windbox Exhaust #3 84.6 104

Hibtac Standard 3 Windbox Exhaust #3 94 103

Hibtac Standard 3 Windbox Exhaust #3 102 101

Hibtac Standard 3 Windbox Exhaust #3 3.47 97

Hibtac Standard 3 Windbox Exhaust #3 11 99

Hibtac Standard 3 Windbox Exhaust #3 20.4 101

Hibtac Standard 3 Windbox Exhaust #3 33.9 102

Hibtac Standard 3 Windbox Exhaust #3 71.1 103

Hibtac Standard 3 Windbox Exhaust #3 84.6 105

Hibtac Standard 3 Windbox Exhaust #3 94 105

Hibtac Standard 3 Windbox Exhaust #3 102 104

Hibtac Standard 3 Windbox Exhaust #3 Average 103 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 145,000 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 195.5

DSCMM = 4,104

NOx Emissions = 106 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 = 249 lbs/min

Natural Gas = 116 MCF/hr

Natural Gas = 82 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 Windbox Exhaust #4 10/1/02 10:22 3.47 124

Hibtac Standard 3 Windbox Exhaust #4 11 125

Hibtac Standard 3 Windbox Exhaust #4 20.4 125

Hibtac Standard 3 Windbox Exhaust #4 33.9 125

Hibtac Standard 3 Windbox Exhaust #4 71.1 124

Hibtac Standard 3 Windbox Exhaust #4 84.6 125

Hibtac Standard 3 Windbox Exhaust #4 94 125

Hibtac Standard 3 Windbox Exhaust #4 102 126

Hibtac Standard 3 Windbox Exhaust #4 3.47 121

Hibtac Standard 3 Windbox Exhaust #4 11 124

Hibtac Standard 3 Windbox Exhaust #4 20.4 124

Hibtac Standard 3 Windbox Exhaust #4 33.9 126

Hibtac Standard 3 Windbox Exhaust #4 71.1 126

Hibtac Standard 3 Windbox Exhaust #4 84.6 125

Hibtac Standard 3 Windbox Exhaust #4 94 126

Hibtac Standard 3 Windbox Exhaust #4 102 126

Hibtac Standard 3 Windbox Exhaust #4 Average 125 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 148,000 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 237.2

DSCMM = 4,188

NOx Emissions = 131 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 = 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 #1 10/1/02 9:00 3.47 52

Hibtac Standard 3 Hood Exhaust #1 11 54

Hibtac Standard 3 Hood Exhaust #1 20.4 55

Hibtac Standard 3 Hood Exhaust #1 33.9 56

Hibtac Standard 3 Hood Exhaust #1 71.1 57

Hibtac Standard 3 Hood Exhaust #1 84.6 57

Hibtac Standard 3 Hood Exhaust #1 94 56

Hibtac Standard 3 Hood Exhaust #1 102 56

Hibtac Standard 3 Hood Exhaust #1 3.47 52

Hibtac Standard 3 Hood Exhaust #1 11 53

Hibtac Standard 3 Hood Exhaust #1 20.4 54

Hibtac Standard 3 Hood Exhaust #1 33.9 55

Hibtac Standard 3 Hood Exhaust #1 71.1 55

Hibtac Standard 3 Hood Exhaust #1 84.6 55

Hibtac Standard 3 Hood Exhaust #1 94 55

Hibtac Standard 3 Hood Exhaust #1 102 55

Hibtac Standard 3 Hood Exhaust #1 Average 55 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 158,000 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 104.2

DSCMM = 4,471

NOx Emissions = 62 lbs/hr

CO Emissions:

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

DSCMM = 4,471

CO Emissions = #DIV/0! lbs/hr

Natural Gas Burner Primary Air = 249 lbs/min

Natural Gas = 116 MCF/hr

Natural Gas = 82 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 10/01/02 9:25 3.47 62

Hibtac Standard 3 Hood Exhaust #2 11 65

Hibtac Standard 3 Hood Exhaust #2 20.4 67

Hibtac Standard 3 Hood Exhaust #2 33.9 68

Hibtac Standard 3 Hood Exhaust #2 71.1 69

Hibtac Standard 3 Hood Exhaust #2 84.6 70

Hibtac Standard 3 Hood Exhaust #2 94 69

Hibtac Standard 3 Hood Exhaust #2 102 69

Hibtac Standard 3 Hood Exhaust #2 3.47 64

Hibtac Standard 3 Hood Exhaust #2 11 66

Hibtac Standard 3 Hood Exhaust #2 20.4 67

Hibtac Standard 3 Hood Exhaust #2 33.9 68

Hibtac Standard 3 Hood Exhaust #2 71.1 68

Hibtac Standard 3 Hood Exhaust #2 84.6 68

Hibtac Standard 3 Hood Exhaust #2 94 69

Hibtac Standard 3 Hood Exhaust #2 102 70

Hibtac Standard 3 Hood Exhaust #2 Average 67 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 152,000 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 128.2

DSCMM = 4,302

NOx Emissions = 73 lbs/hr

CO Emissions:

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

DSCMM = 4,302

CO Emissions = #DIV/0! lbs/hr

Natural Gas Burner Primary Air = 249 lbs/min

Natural Gas = 116 MCF/hr

Natural Gas = 82 lbs/min

Hibtac Line 3 Emission Testing For NOx and CO

100% Natural Gas Firing

Atomizing Air Fan Damper 25% Open 

Emission Reading (PPM)