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 3.47 111

Hibtac Standard 3 Windbox Exhaust #3 11 113

Hibtac Standard 3 Windbox Exhaust #3 20.4 114

Hibtac Standard 3 Windbox Exhaust #3 33.9 115

Hibtac Standard 3 Windbox Exhaust #3 71.1 115

Hibtac Standard 3 Windbox Exhaust #3 84.6 114

Hibtac Standard 3 Windbox Exhaust #3 94 112

Hibtac Standard 3 Windbox Exhaust #3 102 107

Hibtac Standard 3 Windbox Exhaust #3 3.47 112

Hibtac Standard 3 Windbox Exhaust #3 11 111

Hibtac Standard 3 Windbox Exhaust #3 20.4 108

Hibtac Standard 3 Windbox Exhaust #3 33.9 104

Hibtac Standard 3 Windbox Exhaust #3 71.1 101

Hibtac Standard 3 Windbox Exhaust #3 84.6 104

Hibtac Standard 3 Windbox Exhaust #3 94 104

Hibtac Standard 3 Windbox Exhaust #3 102 104

Hibtac Standard 3 Windbox Exhaust #3 Average 109 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 144,378 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 207.8

DSCMM = 4,086

NOx Emissions = 112 lbs/hr

CO Emissions:

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

DSCMM = 4,086

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 Windbox Exhaust #4 10/1/02 14:15 3.47 144

Hibtac Standard 3 Windbox Exhaust #4 11 147

Hibtac Standard 3 Windbox Exhaust #4 20.4 150

Hibtac Standard 3 Windbox Exhaust #4 33.9 152

Hibtac Standard 3 Windbox Exhaust #4 71.1 151

Hibtac Standard 3 Windbox Exhaust #4 84.6 150

Hibtac Standard 3 Windbox Exhaust #4 94 148

Hibtac Standard 3 Windbox Exhaust #4 102

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 149 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 148,000 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 283.0

DSCMM = 4,188

NOx Emissions = 157 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 = 309 lbs/min

Natural Gas = 112 MCF/hr

Natural Gas = 79 lbs/min

Hibtac Line 3 Emission Testing For NOx and CO

100% Natural Gas Firing

Atomizing Air Fan Damper 100% 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 70

Hibtac Standard 3 Hood Exhaust #1 11 70

Hibtac Standard 3 Hood Exhaust #1 20.4 70

Hibtac Standard 3 Hood Exhaust #1 33.9 70

Hibtac Standard 3 Hood Exhaust #1 71.1 69

Hibtac Standard 3 Hood Exhaust #1 84.6 68

Hibtac Standard 3 Hood Exhaust #1 94 67

Hibtac Standard 3 Hood Exhaust #1 102 64

Hibtac Standard 3 Hood Exhaust #1 3.47 72

Hibtac Standard 3 Hood Exhaust #1 11 71

Hibtac Standard 3 Hood Exhaust #1 20.4 71

Hibtac Standard 3 Hood Exhaust #1 33.9 70

Hibtac Standard 3 Hood Exhaust #1 71.1 70

Hibtac Standard 3 Hood Exhaust #1 84.6 67

Hibtac Standard 3 Hood Exhaust #1 94 66

Hibtac Standard 3 Hood Exhaust #1 102 64

Hibtac Standard 3 Hood Exhaust #1 Average 69 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 150,952 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 130.6

DSCMM = 4,272

NOx Emissions = 74 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 54

Hibtac Standard 3 Hood Exhaust #2 11 53

Hibtac Standard 3 Hood Exhaust #2 20.4 53

Hibtac Standard 3 Hood Exhaust #2 33.9 52

Hibtac Standard 3 Hood Exhaust #2 71.1 51

Hibtac Standard 3 Hood Exhaust #2 84.6 51

Hibtac Standard 3 Hood Exhaust #2 94 49

Hibtac Standard 3 Hood Exhaust #2 102 45

Hibtac Standard 3 Hood Exhaust #2 3.47 52

Hibtac Standard 3 Hood Exhaust #2 11 50

Hibtac Standard 3 Hood Exhaust #2 20.4 52

Hibtac Standard 3 Hood Exhaust #2 33.9 52

Hibtac Standard 3 Hood Exhaust #2 71.1 53

Hibtac Standard 3 Hood Exhaust #2 84.6 53

Hibtac Standard 3 Hood Exhaust #2 94 54

Hibtac Standard 3 Hood Exhaust #2 102 55

Hibtac Standard 3 Hood Exhaust #2 Average 52 #DIV/0! #DIV/0!

Measured Waste Gas Stack Airflow = 157,796 DSCFM

NOx Emissions:

Mg/M3 = 154*(46/24.2) = 98.5

DSCMM = 4,466

NOx Emissions = 58 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)