40 CFR Table F-2 to Subpart F of Part 98
Default Data Sources for Parameters Used for CO2 Emissions
June 9, 2020
Open Table
| Parameter | Data source |
|---|---|
| CO2 Emissions from Prebake Cells (CWPB and SWPB) | |
| MP: metal production (metric tons Al) | Individual facility records. |
| NAC: net annual prebaked anode consumption per metric ton Al (metric tons C/metric tons Al) | Individual facility records. |
| Sa: sulfur content in baked anode (percent weight) | 2.0. |
| Asha: ash content in baked anode (percent weight) | 0.4. |
| CO2 Emissions From Pitch Volatiles Combustion (CWPB and SWPB) | |
| MP: metal production (metric tons Al) | Individual facility records. |
| PC: annual paste consumption (metric ton/metric ton Al) | Individual facility records. |
| CSM: annual emissions of cyclohexane soluble matter (kg/metric ton Al) | HSS: 4.0. VSS: 0.5. |
| BC: binder content of paste (percent weight) | Dry Paste: 24. Wet Paste: 27. |
| Sp: sulfur content of pitch (percent weight) | 0.6. |
| Ashp: ash content of pitch (percent weight) | 0.2. |
| Hp: hydrogen content of pitch (percent weight) | 3.3. |
| Sc: sulfur content in calcined coke (percent weight) | 1.9. |
| Ashc: ash content in calcined coke (percent weight) | 0.2. |
| CD: carbon in skimmed dust from Søderberg cells (metric ton C/metric ton Al) | 0.01. |
| CO2 Emissions from Pitch Volatiles Combustion (VSS and HSS) | |
| GA: initial weight of green anodes (metric tons) | Individual facility records. |
| Hw: annual hydrogen content in green anodes (metric tons) | 0.005 × GA. |
| BA: annual baked anode production (metric tons) | Individual facility records. |
| WT: annual waste tar collected (metric tons) | (a) 0.005 × GA. |
| (a) Riedhammer furnaces | (b) insignificant. |
| (b) all other furnaces | |
| CO2 Emissions From Bake Furnace Packing Materials (CWPB and SWPB) | |
| PCC: annual packing coke consumption (metric tons/metric ton baked anode) | 0.015. |
| BA: annual baked anode production (metric tons) | Individual facility records. |
| Spc: sulfur content in packing coke (percent weight) | 2. |
| Ashpc: ash content in packing coke (percent weight) | 2.5. |
[74 FR 56374, Oct. 30, 2009, as amended at 75 FR 79156, Dec. 17, 2010]
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