Emission estimation calculators, booklet 1: chapter 15


Wood Products Operation

Wood products operations (e.g. sawmill, lumber mill, panel board mill, wood product manufacturing facility, etc.) result in releases of Criteria Air Contaminants (CAC), dioxins and furans, and hexachlorobenzene (HCB).  The equipment for which the process emissions are calculated with this tool include cyclones and baghouses (for the following releases sources: dry wood chipper, dry wood handling, green wood material handling, miscellaneous wood handling, planers, saws, and silos), lumber kilns, wood residue fired boilers and wood waste conical burners. Other documents are also available to calculate other releases that may apply to wood products operations, such as distillate fuel oil (No. 2 oil) for industrial boilers, but have not yet been incorporated in this tool.

Download spreadsheet calculator: Wood_Product_Operation_Spreadsheet_21_04_2015.xlsx [xlsx 70 KB] (21 Apr 2015)

Suggested estimation methodology: Calculated Emission Factor

The general equation for emissions estimation is:

E = A x EF

where:

  • E = emissions
  • A = activity rate
  • EF = emission factor

Lumber Kilns

Input Data

DLP = Dried Lumber Production [Thousand Board Feet (MBF)]
TP = Percentage of tree type [Percent (%)]

Tree types include: black spruce, jack pine, lodgepole pine, red pine, white spruce

Part 1 Releases

A = (DLP x TP)/1000

Black Spruce
National Pollutant Release Inventory (NPRI) Substance Chemical Abstracts Service Registry Number (CAS RN)Footnote1.1 Emission FactorFootnote2 Units
Acetaldehyde 75-07-0 0.0485 (kilograms (kg)/MBF)
Acrolein 107-02-8 0.000359 (kg/MBF)
Formaldehyde 50-00-0 0.0027 (kg/MBF)
Methanol 67-56-1 0.0522 (kg/MBF)
Lodgepole Pine
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote3 Units
Acetaldehyde 75-07-0 0.033 (kg/MBF)
Acrolein 107-02-8 0.000925 (kg/MBF)
Formaldehyde 50-00-0 0.0023 (kg/MBF)
Methanol 67-56-1 0.034 (kg/MBF)
White Spruce
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote4 Units
Acetaldehyde 75-07-0 0.03 (kg/MBF)
Acrolein 107-02-8 0.0007 (kg/MBF)
Formaldehyde 50-00-0 0.005 (kg/MBF)
Methanol 67-56-1 0.064 (kg/MBF)

Part 4 Releases

A = DLP x TP

Volatile Organic Compounds (VOC) emissions [tonne VOC as C/yr]
Wood species Emission FactorFootnote5 Units
Black spruce 0.2 kg VOC as C /MBF
Jack pine 0.44 kg VOC as C /MBF
Lodgepole pine 0.43 kg VOC as C /MBF
Red pine 0.94 kg VOC as C /MBF
White spruce 0.247 kg VOC as C /MBF

Part 5 Releases

A = (DLP x TP)/1000

Black Spruce
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote2 Units
α-pinene 80-56-8 0.0753 (kg/MBF)
β-phellandrene 555-10-2 0.0054 (kg/MBF)
β-pinene 127-91-3 0.0240 (kg/MBF)
Ethanol 64-17-5 0.0054 (kg/MBF)
Formaldehyde 50-00-0 0.0027 (kg/MBF)
Methanol 67-56-1 0.0522 (kg/MBF)
Myrcene 123-35-3 0.0050 (kg/MBF)
Lodgepole Pine
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote3 Units
α-pinene 80-56-8 0.0535 (kg/MBF)
β-phellandrene 555-10-2 0.1650 (kg/MBF)
β-pinene 127-91-3 0.0240 (kg/MBF)
Ethanol 64-17-5 0.0190 (kg/MBF)
Formaldehyde 50-00-0 0.0023 (kg/MBF)
Methanol 67-56-1 0.0340 (kg/MBF)
Myrcene 123-35-3 0.0091 (kg/MBF)
White Spruce
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote4 Units
α-pinene 80-56-8 0.0580 (kg/MBF)
β-phellandrene 555-10-2 0.0090 (kg/MBF)
β-pinene 127-91-3 0.0660 (kg/MBF)
Ethanol 64-17-5 0.0160 (kg/MBF)
Formaldehyde 50-00-0 0.0050 (kg/MBF)
Methanol 67-56-1 0.0640 (kg/MBF)
Myrcene 123-35-3 0.0090 (kg/MBF)

Wood Handling Sources

Input Data

WHS = wood handling sources [Oven Dry Tonne (ODT) or Thousand Board Feet (MBF)]

Wood handling sources include: Dry Wood Chipper [ODT], Dry Wood Material Handling (cyclones, dry wood residue) [ODT], Green Wood Material Handling (cyclones, green/wet wood residue) [ODT], Miscellaneous Wood Handling (cyclones, mixed wood residues) [MBF], Planer [ODT], Saw [ODT] and Silo [MBF].

Part 4 Releases

The activity rate for wood handling sources is the amount or wood product from each source.  The emissions must be calculated individually for each input and then summed for each substance released. 

A = WHS/1000

Total Particulate Matter (TMP) [tonnes] Footnote**
Equipment Emissions FactorFootnote5 Units
Dry Wood Chipper 1.18E-01 kg/ODT
Dry Wood Material Handling (cyclones, dry wood residue) 9.14E-01 kg/ODT
Green Wood Material Handling (cyclones, green/wet wood residue) 9.63E-03 kg/ODT
Miscellaneous Wood Handling (cyclones, mixed wood residues) 2.04E-02 kg/MBF
Planer 6.51E-01 kg/ODT
Saw 3.15E-02 kg/ODT
Silo 1.19E-02 kg/MBF
Particulate Matter less than or equal to 10 microns (PM 10) [tonnes] Footnote**
Equipment Emissions FactorFootnote5 Units
Dry Wood Chipper 9.10E-02 kg/ODT
Dry Wood Material Handling (cyclones, dry wood residue) 6.16E-01 kg/ODT
Planer 1.52E-01 kg/ODT
Particulate Matter less than or equal to 2.5 microns (PM 2.5) [tonnes] Footnote**
Equipment EmissionsFactorFootnote5 Units
Dry Wood Chipper 8.00E-03Footnote* kg/ODT
Dry Wood Material Handling (cyclones, dry wood residue) 9.75E-02 kg/ODT
Planer 3.61E-02 kg/ODT

kg/ODT = kg of compound per oven dry metric ton of wood material sent to the wood handling system (e.g., cyclone) and, if applicable, the control device (e.g., baghouse); for instance, kg of total particulate matter per oven dry metric ton of sander dust sent to the baghouse.

Wood Residue-Fired Boilers

Input Data

LT = Lumber Throughput [MBF]
BE = Boiler Energy (Default ratio: 2.50) [Million British Thermal Units (MMBtu)/MBF Lumber Dried]
BH = Boiler Heat Input [MMBtu/yr]

A = (LT x BE x 1055056000)/1000 or A = (BH x 1055056000)/1000

Part 1 Releases

Part 1 Releases
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote5 Units
Acetaldehyde 75-07-0 1.22E-13 kg/joule (J)
Acrolein 107-02-8 1.12E-13 kg/J
Benzene 71-43-2 4.21E-13 kg/J
Formaldehyde 50-00-0 4.51E-13 kg/J
Isopropanol (Isopropyl alcohol) 67-63-0 1.94E-12 kg/J
Methanol 67-56-1 3.14E-13 kg/J
Methylene chloride (Dichloromethane) 75-09-2 1.71E-13 kg/J
Napthalene 91-20-3 4.28E-14 kg/J
n-Butyraldehyde (Butyraldehyde) 123-72-8 6.88E-14 kg/J
n-Hexane 110-54-3 1.24E-13 kg/J

Part 4 Releases

Carbon Monoxide (630-08-0 Footnote1.1)
Boiler Configuration Emission FactorFootnote5 Units
Fluidized Bed Combustor 3.13E-11 (kg/J)
Fuel Cell or Dutch Oven 1.91E-10 (kg/J)
Stoker Combustor 3.11E-10 (kg/J)
Suspension Burner 7.61E-11 (kg/J)
Oxides of Nitrogen (NO x), expressed as nitrogen dioxide (NO 2) (11104-93-1 Footnote1.1)
Wood Type Emission FactorFootnote5 Units
Clean Wet Wood (20% moisture) 9.11E-11 (kg/J)
Wood with UF Resins 3.40E-10 (kg/J)
Total Particulate Matter (TPM) Footnote**
Control Device Emission FactorFootnote5 Units
Fabric Filter 4.30E-11 (kg/J)
ESP 7.48E-12 (kg/J)
Mechanical Collector with Fly Ash Re-injection 7.52E-11 (kg/J)
Mechanical Collector without Fly Ash Re-injection 7.52E-11 (kg/J)
Wet Scrubber 2.84E-11 (kg/J)
Particulate Matter less than or equal to 10 micrometers (µm) (PM 10) Footnote**
Control Device Emission FactorFootnote5 Units
Fabric Filter 3.18E-11 (kg/J)
ESP 3.18E-11 (kg/J)
Mechanical Collector with Fly Ash Re-injection 3.91E-11 (kg/J)
Mechanical Collector without Fly Ash Re-injection 1.38E-11 (kg/J)
Wet Scrubber 4.21E-11 (kg/J)
Particulate Matter less than or equal to 2.5 (µm) (PM 2.5) Footnote**
Control Device Emission FactorFootnote5 Units
Fabric Filter 2.80E-11 (kg/J)
ESP 1.76E-11 (kg/J)
Mechanical Collector with Fly Ash Re-injection 2.32E-11 (kg/J)
Mechanical Collector without Fly Ash Re-injection 6.88E-12 (kg/J)
Wet Scrubber 4.21E-11 (kg/J)
Other Substances
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote5 Units
Sulphur Dioxide (SO2) 7446-09-5 4.690E-12 (kg/J)
Volatile Organic Compounds (VOCs) Footnote** 1.660E-12 (kg/J)

Part 5 Releases

Part 5 Releases
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote5 Units
Benzene 71-43-2 4.21E-13 (kg/J)
Formaldehyde 50-00-0 4.51E-13 (kg/J)
Isopropanol  (Isopropyl alcohol) 67-63-0 1.94E-12 (kg/J)
Methanol 67-56-1 3.14E-13 (kg/J)
n-Hexane 110-54-3 1.24E-13 (kg/J)

Wood Waste Incinerators or Conical Burners

Input Data

LT = Lumber Throughput [Thousand Board Feet (MBF)]
RWP = Residual Wood Production (Default ratio: 0.50) [As-is tonne Residual/MBF]
MC = Moisture Content (Default : 50%) [Percent]
ODT = Lumber Throughput [Oven Dry Tonnes]
AIT = Residual Wood Production [As-is tonnes]

Substance Releases

Part 1 Releases
A = ((LT x RWP)/(1+MC) x 1.5)/1000 Footnote*** or A = (ODT + (AIT/(1+MC)) ) x 1.5/1000 Footnote***
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote5 Units
Acetaldehyde 75-07-0 0.00128 (kg/tonne wood burned as is)
Acrolein 107-02-8 0.0012 (kg/tonne wood burned as is)
Benzene 71-43-2 0.0044 (kg/tonne wood burned as is)
Formaldehyde 50-00-0 0.0047 (kg/tonne wood burned as is)
Isopropanol (Isopropyl alcohol) 67-63-0 0.0203 (kg/tonne wood burned as is)
Methanol 67-56-1 0.0033 (kg/tonne wood burned as is)
Methylene chloride (Dichloromethane) 75-09-2 0.0018 (kg/tonne wood burned as is)
Napthalene 91-20-3 0.0004 (kg/tonne wood burned as is)
n-Butyraldehyde (Butyraldehyde) 123-72-8 0.0007 (kg/tonne wood burned as is)
n-Hexane 110-54-3 0.0013 (kg/tonne wood burned as is)
Part 3 Releases
A = (LT x RWP)/(1+MC) or A = ODT + (AIT/(1+MC))
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote5 Units
2,3,7,8-Tetrachlorodibenzo-p-dioxin 1746-01-6 1.04E-09 (g/ODT)
1,2,3,7,8-Pentachlorodibenzo-p-dioxin 40321-76-4 1.45E-09 (g/ODT)
1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin 39227-28-6 9.51E-10 (g/ODT)
1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin 19408-74-3 1.53E-09 (g/ODT)
1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin 57653-85-7 2.29E-09 (g/ODT)
1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin 35822-46-9 1.07E-08 (g/ODT)
Octachlorodibenzo-p-dioxin 3268-87-9 2.69E-08 (g/ODT)
2,3,7,8-Tetrachlorodibenzofuran 51207-31-9 8.78E-09 (g/ODT)
2,3,4,7,8-Pentachlorodibenzofuran 57117-31-4 6.65E-09 (g/ODT)
1,2,3,7,8-Pentachlorodibenzofuran 57117-41-6 4.37E-09 (g/ODT)
1,2,3,4,7,8-Hexachlorodibenzofuran 70648-26-9 3.91E-09 (g/ODT)
1,2,3,7,8,9-Hexachlorodibenzofuran 72918-21-9 7.32E-10 (g/ODT)
1,2,3,6,7,8-Hexachlorodibenzofuran 57117-44-9 3.47E-09 (g/ODT)
2,3,4,6,7,8-Hexachlorodibenzofuran 60851-34-5 2.91E-09 (g/ODT)
1,2,3,4,6,7,8-Heptachlorodibenzofuran 67562-39-4 6.23E-09 (g/ODT)
1,2,3,4,7,8,9-Heptachlorodibenzofuran 55673-89-7 8.72E-10 (g/ODT)
Octachlorodibenzofuran 39001-02-0 5.46E-09 (g/ODT)
Hexachlorobenzene 118-74-1 No information -

g/ODT = grams per oven-dry metric tons.

Part 4 Releases
A = (LT x RWP)/(1+MC) x 1.5 Footnote*** or A = ODT + (AIT/(1+MC)) x1.5 Footnote***
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnoteƗFootnote6 Units
Carbon Monoxide (CO) 630-08-0 0.065 (tonnes/tonne)
Sulphur Dioxide (SO2) 7446-09-5 0.00005 (tonnes/tonne)
Oxides of Nitrogen, expressed as NO2 (NOx) 11104-93-1 0.0005 (tonnes/tonne)
Volatile Organic Compounds (VOCs) Footnote** 0.0055 (tonnes/tonne)
Total Particulate Matter (TPM) Footnote**
Burner Operation Type Emission FactorFootnote6 Units
SatisfactoryFootnoteƗ 0.0005 (tonnes/tonne)
UnsatisfactoryFootnoteƗƗ 0.0035 (tonnes/tonne)
Very UnsatisfactoryFootnoteƗƗƗ 0.01 (tonnes/tonne)
Part 5 Releases
A = ((LT x RWP)/(1+MC) ) x 1.5/1000 Footnote*** or A = (ODT + (AIT/(1+MC)) ) x 1.5/1000 Footnote***
NPRI Substance CAS RNFootnote1.1 Emission FactorFootnote5 Units
Benzene 71-43-2 0.0044 (kg/tonne wood burned as is)
Formaldehyde 50-00-0 0.0047 (kg/tonne wood burned as is)
Isopropanol  (Isopropyl alcohol) 67-63-0 0.0203 (kg/tonne wood burned as is)
Methanol 67-56-1 0.0033 (kg/tonne wood burned as is)
n-Hexane 110-54-3 0.0013 (kg/tonne wood burned as is)
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